x86_cpu.cc revision 9886
19883Sandreas@sandberg.pp.se/* 29883Sandreas@sandberg.pp.se * Copyright (c) 2013 Andreas Sandberg 39883Sandreas@sandberg.pp.se * All rights reserved 49883Sandreas@sandberg.pp.se * 59883Sandreas@sandberg.pp.se * Redistribution and use in source and binary forms, with or without 69883Sandreas@sandberg.pp.se * modification, are permitted provided that the following conditions are 79883Sandreas@sandberg.pp.se * met: redistributions of source code must retain the above copyright 89883Sandreas@sandberg.pp.se * notice, this list of conditions and the following disclaimer; 99883Sandreas@sandberg.pp.se * redistributions in binary form must reproduce the above copyright 109883Sandreas@sandberg.pp.se * notice, this list of conditions and the following disclaimer in the 119883Sandreas@sandberg.pp.se * documentation and/or other materials provided with the distribution; 129883Sandreas@sandberg.pp.se * neither the name of the copyright holders nor the names of its 139883Sandreas@sandberg.pp.se * contributors may be used to endorse or promote products derived from 149883Sandreas@sandberg.pp.se * this software without specific prior written permission. 159883Sandreas@sandberg.pp.se * 169883Sandreas@sandberg.pp.se * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 179883Sandreas@sandberg.pp.se * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 189883Sandreas@sandberg.pp.se * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 199883Sandreas@sandberg.pp.se * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 209883Sandreas@sandberg.pp.se * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 219883Sandreas@sandberg.pp.se * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 229883Sandreas@sandberg.pp.se * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 239883Sandreas@sandberg.pp.se * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 249883Sandreas@sandberg.pp.se * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 259883Sandreas@sandberg.pp.se * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 269883Sandreas@sandberg.pp.se * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 279883Sandreas@sandberg.pp.se * 289883Sandreas@sandberg.pp.se * Authors: Andreas Sandberg 299883Sandreas@sandberg.pp.se */ 309883Sandreas@sandberg.pp.se 319883Sandreas@sandberg.pp.se#include <linux/kvm.h> 329883Sandreas@sandberg.pp.se 339883Sandreas@sandberg.pp.se#include <algorithm> 349883Sandreas@sandberg.pp.se#include <cerrno> 359883Sandreas@sandberg.pp.se#include <memory> 369883Sandreas@sandberg.pp.se 379883Sandreas@sandberg.pp.se#include "arch/x86/regs/msr.hh" 389883Sandreas@sandberg.pp.se#include "arch/x86/cpuid.hh" 399883Sandreas@sandberg.pp.se#include "arch/x86/utility.hh" 409883Sandreas@sandberg.pp.se#include "arch/registers.hh" 419883Sandreas@sandberg.pp.se#include "cpu/kvm/base.hh" 429883Sandreas@sandberg.pp.se#include "cpu/kvm/x86_cpu.hh" 439883Sandreas@sandberg.pp.se#include "debug/Drain.hh" 449883Sandreas@sandberg.pp.se#include "debug/Kvm.hh" 459883Sandreas@sandberg.pp.se#include "debug/KvmContext.hh" 469883Sandreas@sandberg.pp.se#include "debug/KvmIO.hh" 479883Sandreas@sandberg.pp.se#include "debug/KvmInt.hh" 489883Sandreas@sandberg.pp.se 499883Sandreas@sandberg.pp.seusing namespace X86ISA; 509883Sandreas@sandberg.pp.se 519883Sandreas@sandberg.pp.se#define MSR_TSC 0x10 529883Sandreas@sandberg.pp.se 539883Sandreas@sandberg.pp.se#define IO_PCI_CONF_ADDR 0xCF8 549883Sandreas@sandberg.pp.se#define IO_PCI_CONF_DATA_BASE 0xCFC 559883Sandreas@sandberg.pp.se 569886Sandreas@sandberg.pp.se// Task segment type of an inactive 32-bit or 64-bit task 579886Sandreas@sandberg.pp.se#define SEG_SYS_TYPE_TSS_AVAILABLE 9 589886Sandreas@sandberg.pp.se// Task segment type of an active 32-bit or 64-bit task 599886Sandreas@sandberg.pp.se#define SEG_SYS_TYPE_TSS_BUSY 11 609886Sandreas@sandberg.pp.se 619886Sandreas@sandberg.pp.se// Non-conforming accessed code segment 629886Sandreas@sandberg.pp.se#define SEG_CS_TYPE_ACCESSED 9 639886Sandreas@sandberg.pp.se// Non-conforming accessed code segment that can be read 649886Sandreas@sandberg.pp.se#define SEG_CS_TYPE_READ_ACCESSED 11 659886Sandreas@sandberg.pp.se 669886Sandreas@sandberg.pp.se// The lowest bit of the type field for normal segments (code and 679886Sandreas@sandberg.pp.se// data) is used to indicate that a segment has been accessed. 689886Sandreas@sandberg.pp.se#define SEG_TYPE_BIT_ACCESSED 1 699886Sandreas@sandberg.pp.se 709886Sandreas@sandberg.pp.se 719883Sandreas@sandberg.pp.se#define FOREACH_IREG() \ 729883Sandreas@sandberg.pp.se do { \ 739883Sandreas@sandberg.pp.se APPLY_IREG(rax, INTREG_RAX); \ 749883Sandreas@sandberg.pp.se APPLY_IREG(rbx, INTREG_RBX); \ 759883Sandreas@sandberg.pp.se APPLY_IREG(rcx, INTREG_RCX); \ 769883Sandreas@sandberg.pp.se APPLY_IREG(rdx, INTREG_RDX); \ 779883Sandreas@sandberg.pp.se APPLY_IREG(rsi, INTREG_RSI); \ 789883Sandreas@sandberg.pp.se APPLY_IREG(rdi, INTREG_RDI); \ 799883Sandreas@sandberg.pp.se APPLY_IREG(rsp, INTREG_RSP); \ 809883Sandreas@sandberg.pp.se APPLY_IREG(rbp, INTREG_RBP); \ 819883Sandreas@sandberg.pp.se APPLY_IREG(r8, INTREG_R8); \ 829883Sandreas@sandberg.pp.se APPLY_IREG(r9, INTREG_R9); \ 839883Sandreas@sandberg.pp.se APPLY_IREG(r10, INTREG_R10); \ 849883Sandreas@sandberg.pp.se APPLY_IREG(r11, INTREG_R11); \ 859883Sandreas@sandberg.pp.se APPLY_IREG(r12, INTREG_R12); \ 869883Sandreas@sandberg.pp.se APPLY_IREG(r13, INTREG_R13); \ 879883Sandreas@sandberg.pp.se APPLY_IREG(r14, INTREG_R14); \ 889883Sandreas@sandberg.pp.se APPLY_IREG(r15, INTREG_R15); \ 899883Sandreas@sandberg.pp.se } while(0) 909883Sandreas@sandberg.pp.se 919883Sandreas@sandberg.pp.se#define FOREACH_SREG() \ 929883Sandreas@sandberg.pp.se do { \ 939883Sandreas@sandberg.pp.se APPLY_SREG(cr0, MISCREG_CR0); \ 949883Sandreas@sandberg.pp.se APPLY_SREG(cr2, MISCREG_CR2); \ 959883Sandreas@sandberg.pp.se APPLY_SREG(cr3, MISCREG_CR3); \ 969883Sandreas@sandberg.pp.se APPLY_SREG(cr4, MISCREG_CR4); \ 979883Sandreas@sandberg.pp.se APPLY_SREG(cr8, MISCREG_CR8); \ 989883Sandreas@sandberg.pp.se APPLY_SREG(efer, MISCREG_EFER); \ 999883Sandreas@sandberg.pp.se APPLY_SREG(apic_base, MISCREG_APIC_BASE); \ 1009883Sandreas@sandberg.pp.se } while(0) 1019883Sandreas@sandberg.pp.se 1029883Sandreas@sandberg.pp.se#define FOREACH_DREG() \ 1039883Sandreas@sandberg.pp.se do { \ 1049883Sandreas@sandberg.pp.se APPLY_DREG(db[0], MISCREG_DR0); \ 1059883Sandreas@sandberg.pp.se APPLY_DREG(db[1], MISCREG_DR1); \ 1069883Sandreas@sandberg.pp.se APPLY_DREG(db[2], MISCREG_DR2); \ 1079883Sandreas@sandberg.pp.se APPLY_DREG(db[3], MISCREG_DR3); \ 1089883Sandreas@sandberg.pp.se APPLY_DREG(dr6, MISCREG_DR6); \ 1099883Sandreas@sandberg.pp.se APPLY_DREG(dr7, MISCREG_DR7); \ 1109883Sandreas@sandberg.pp.se } while(0) 1119883Sandreas@sandberg.pp.se 1129883Sandreas@sandberg.pp.se#define FOREACH_SEGMENT() \ 1139883Sandreas@sandberg.pp.se do { \ 1149883Sandreas@sandberg.pp.se APPLY_SEGMENT(cs, MISCREG_CS - MISCREG_SEG_SEL_BASE); \ 1159883Sandreas@sandberg.pp.se APPLY_SEGMENT(ds, MISCREG_DS - MISCREG_SEG_SEL_BASE); \ 1169883Sandreas@sandberg.pp.se APPLY_SEGMENT(es, MISCREG_ES - MISCREG_SEG_SEL_BASE); \ 1179883Sandreas@sandberg.pp.se APPLY_SEGMENT(fs, MISCREG_FS - MISCREG_SEG_SEL_BASE); \ 1189883Sandreas@sandberg.pp.se APPLY_SEGMENT(gs, MISCREG_GS - MISCREG_SEG_SEL_BASE); \ 1199883Sandreas@sandberg.pp.se APPLY_SEGMENT(ss, MISCREG_SS - MISCREG_SEG_SEL_BASE); \ 1209883Sandreas@sandberg.pp.se APPLY_SEGMENT(tr, MISCREG_TR - MISCREG_SEG_SEL_BASE); \ 1219883Sandreas@sandberg.pp.se APPLY_SEGMENT(ldt, MISCREG_TSL - MISCREG_SEG_SEL_BASE); \ 1229883Sandreas@sandberg.pp.se } while(0) 1239883Sandreas@sandberg.pp.se 1249883Sandreas@sandberg.pp.se#define FOREACH_DTABLE() \ 1259883Sandreas@sandberg.pp.se do { \ 1269883Sandreas@sandberg.pp.se APPLY_DTABLE(gdt, MISCREG_TSG - MISCREG_SEG_SEL_BASE); \ 1279883Sandreas@sandberg.pp.se APPLY_DTABLE(idt, MISCREG_IDTR - MISCREG_SEG_SEL_BASE); \ 1289883Sandreas@sandberg.pp.se } while(0) 1299883Sandreas@sandberg.pp.se 1309883Sandreas@sandberg.pp.setemplate<typename STRUCT, typename ENTRY> 1319883Sandreas@sandberg.pp.sestatic STRUCT *newVarStruct(size_t entries) 1329883Sandreas@sandberg.pp.se{ 1339883Sandreas@sandberg.pp.se return (STRUCT *)operator new(sizeof(STRUCT) + entries * sizeof(ENTRY)); 1349883Sandreas@sandberg.pp.se} 1359883Sandreas@sandberg.pp.se 1369883Sandreas@sandberg.pp.sestatic void 1379883Sandreas@sandberg.pp.sedumpKvm(const struct kvm_regs ®s) 1389883Sandreas@sandberg.pp.se{ 1399883Sandreas@sandberg.pp.se inform("KVM register state:\n"); 1409883Sandreas@sandberg.pp.se 1419883Sandreas@sandberg.pp.se#define APPLY_IREG(kreg, mreg) \ 1429883Sandreas@sandberg.pp.se inform("\t" # kreg ": 0x%llx\n", regs.kreg) 1439883Sandreas@sandberg.pp.se 1449883Sandreas@sandberg.pp.se FOREACH_IREG(); 1459883Sandreas@sandberg.pp.se 1469883Sandreas@sandberg.pp.se#undef APPLY_IREG 1479883Sandreas@sandberg.pp.se 1489883Sandreas@sandberg.pp.se inform("\trip: 0x%llx\n", regs.rip); 1499883Sandreas@sandberg.pp.se inform("\trflags: 0x%llx\n", regs.rflags); 1509883Sandreas@sandberg.pp.se} 1519883Sandreas@sandberg.pp.se 1529883Sandreas@sandberg.pp.sestatic void 1539883Sandreas@sandberg.pp.sedumpKvm(const char *reg_name, const struct kvm_segment &seg) 1549883Sandreas@sandberg.pp.se{ 1559883Sandreas@sandberg.pp.se inform("\t%s: @0x%llx+%x [sel: 0x%x, type: 0x%x]\n" 1569883Sandreas@sandberg.pp.se "\t\tpres.: %u, dpl: %u, db: %u, s: %u, l: %u, g: %u, avl: %u, unus.: %u\n", 1579883Sandreas@sandberg.pp.se reg_name, 1589883Sandreas@sandberg.pp.se seg.base, seg.limit, seg.selector, seg.type, 1599883Sandreas@sandberg.pp.se seg.present, seg.dpl, seg.db, seg.s, seg.l, seg.g, seg.avl, seg.unusable); 1609883Sandreas@sandberg.pp.se} 1619883Sandreas@sandberg.pp.se 1629883Sandreas@sandberg.pp.sestatic void 1639883Sandreas@sandberg.pp.sedumpKvm(const char *reg_name, const struct kvm_dtable &dtable) 1649883Sandreas@sandberg.pp.se{ 1659883Sandreas@sandberg.pp.se inform("\t%s: @0x%llx+%x\n", 1669883Sandreas@sandberg.pp.se reg_name, dtable.base, dtable.limit); 1679883Sandreas@sandberg.pp.se} 1689883Sandreas@sandberg.pp.se 1699883Sandreas@sandberg.pp.sestatic void 1709883Sandreas@sandberg.pp.sedumpKvm(const struct kvm_sregs &sregs) 1719883Sandreas@sandberg.pp.se{ 1729883Sandreas@sandberg.pp.se#define APPLY_SREG(kreg, mreg) \ 1739883Sandreas@sandberg.pp.se inform("\t" # kreg ": 0x%llx\n", sregs.kreg); 1749883Sandreas@sandberg.pp.se#define APPLY_SEGMENT(kreg, idx) \ 1759883Sandreas@sandberg.pp.se dumpKvm(# kreg, sregs.kreg); 1769883Sandreas@sandberg.pp.se#define APPLY_DTABLE(kreg, idx) \ 1779883Sandreas@sandberg.pp.se dumpKvm(# kreg, sregs.kreg); 1789883Sandreas@sandberg.pp.se 1799883Sandreas@sandberg.pp.se inform("Special registers:\n"); 1809883Sandreas@sandberg.pp.se FOREACH_SEGMENT(); 1819883Sandreas@sandberg.pp.se FOREACH_SREG(); 1829883Sandreas@sandberg.pp.se FOREACH_DTABLE(); 1839883Sandreas@sandberg.pp.se 1849883Sandreas@sandberg.pp.se inform("Interrupt Bitmap:"); 1859883Sandreas@sandberg.pp.se for (int i = 0; i < KVM_NR_INTERRUPTS; i += 64) 1869883Sandreas@sandberg.pp.se inform(" 0x%.8x", sregs.interrupt_bitmap[i / 64]); 1879883Sandreas@sandberg.pp.se 1889883Sandreas@sandberg.pp.se#undef APPLY_SREG 1899883Sandreas@sandberg.pp.se#undef APPLY_SEGMENT 1909883Sandreas@sandberg.pp.se#undef APPLY_DTABLE 1919883Sandreas@sandberg.pp.se} 1929883Sandreas@sandberg.pp.se 1939883Sandreas@sandberg.pp.se#ifdef KVM_GET_DEBUGREGS 1949883Sandreas@sandberg.pp.sestatic void 1959883Sandreas@sandberg.pp.sedumpKvm(const struct kvm_debugregs ®s) 1969883Sandreas@sandberg.pp.se{ 1979883Sandreas@sandberg.pp.se inform("KVM debug state:\n"); 1989883Sandreas@sandberg.pp.se 1999883Sandreas@sandberg.pp.se#define APPLY_DREG(kreg, mreg) \ 2009883Sandreas@sandberg.pp.se inform("\t" # kreg ": 0x%llx\n", regs.kreg) 2019883Sandreas@sandberg.pp.se 2029883Sandreas@sandberg.pp.se FOREACH_DREG(); 2039883Sandreas@sandberg.pp.se 2049883Sandreas@sandberg.pp.se#undef APPLY_DREG 2059883Sandreas@sandberg.pp.se 2069883Sandreas@sandberg.pp.se inform("\tflags: 0x%llx\n", regs.flags); 2079883Sandreas@sandberg.pp.se} 2089883Sandreas@sandberg.pp.se#endif 2099883Sandreas@sandberg.pp.se 2109883Sandreas@sandberg.pp.sestatic void 2119883Sandreas@sandberg.pp.sedumpKvm(const struct kvm_fpu &fpu) 2129883Sandreas@sandberg.pp.se{ 2139883Sandreas@sandberg.pp.se inform("FPU registers:\n"); 2149883Sandreas@sandberg.pp.se inform("\tfcw: 0x%x\n", fpu.fcw); 2159883Sandreas@sandberg.pp.se inform("\tfsw: 0x%x\n", fpu.fsw); 2169883Sandreas@sandberg.pp.se inform("\tftwx: 0x%x\n", fpu.ftwx); 2179883Sandreas@sandberg.pp.se inform("\tlast_opcode: 0x%x\n", fpu.last_opcode); 2189883Sandreas@sandberg.pp.se inform("\tlast_ip: 0x%x\n", fpu.last_ip); 2199883Sandreas@sandberg.pp.se inform("\tlast_dp: 0x%x\n", fpu.last_dp); 2209883Sandreas@sandberg.pp.se inform("\tmxcsr: 0x%x\n", fpu.mxcsr); 2219883Sandreas@sandberg.pp.se inform("\tFP Stack:\n"); 2229883Sandreas@sandberg.pp.se for (int i = 0; i < 8; ++i) { 2239883Sandreas@sandberg.pp.se const bool empty(!((fpu.ftwx >> i) & 0x1)); 2249883Sandreas@sandberg.pp.se char hex[33]; 2259883Sandreas@sandberg.pp.se for (int j = 0; j < 16; ++j) 2269883Sandreas@sandberg.pp.se snprintf(&hex[j*2], 3, "%.2x", fpu.fpr[i][j]); 2279883Sandreas@sandberg.pp.se inform("\t\t%i: 0x%s%s\n", i, hex, empty ? " (e)" : ""); 2289883Sandreas@sandberg.pp.se } 2299883Sandreas@sandberg.pp.se inform("\tXMM registers:\n"); 2309883Sandreas@sandberg.pp.se for (int i = 0; i < 16; ++i) { 2319883Sandreas@sandberg.pp.se char hex[33]; 2329883Sandreas@sandberg.pp.se for (int j = 0; j < 16; ++j) 2339883Sandreas@sandberg.pp.se snprintf(&hex[j*2], 3, "%.2x", fpu.xmm[i][j]); 2349883Sandreas@sandberg.pp.se inform("\t\t%i: 0x%s\n", i, hex); 2359883Sandreas@sandberg.pp.se } 2369883Sandreas@sandberg.pp.se} 2379883Sandreas@sandberg.pp.se 2389883Sandreas@sandberg.pp.sestatic void 2399883Sandreas@sandberg.pp.sedumpKvm(const struct kvm_msrs &msrs) 2409883Sandreas@sandberg.pp.se{ 2419883Sandreas@sandberg.pp.se inform("MSRs:\n"); 2429883Sandreas@sandberg.pp.se 2439883Sandreas@sandberg.pp.se for (int i = 0; i < msrs.nmsrs; ++i) { 2449883Sandreas@sandberg.pp.se const struct kvm_msr_entry &e(msrs.entries[i]); 2459883Sandreas@sandberg.pp.se 2469883Sandreas@sandberg.pp.se inform("\t0x%x: 0x%x\n", e.index, e.data); 2479883Sandreas@sandberg.pp.se } 2489883Sandreas@sandberg.pp.se} 2499883Sandreas@sandberg.pp.se 2509883Sandreas@sandberg.pp.sestatic void 2519883Sandreas@sandberg.pp.sedumpKvm(const struct kvm_xcrs ®s) 2529883Sandreas@sandberg.pp.se{ 2539883Sandreas@sandberg.pp.se inform("KVM XCR registers:\n"); 2549883Sandreas@sandberg.pp.se 2559883Sandreas@sandberg.pp.se inform("\tFlags: 0x%x\n", regs.flags); 2569883Sandreas@sandberg.pp.se for (int i = 0; i < regs.nr_xcrs; ++i) { 2579883Sandreas@sandberg.pp.se inform("\tXCR[0x%x]: 0x%x\n", 2589883Sandreas@sandberg.pp.se regs.xcrs[i].xcr, 2599883Sandreas@sandberg.pp.se regs.xcrs[i].value); 2609883Sandreas@sandberg.pp.se } 2619883Sandreas@sandberg.pp.se} 2629883Sandreas@sandberg.pp.se 2639883Sandreas@sandberg.pp.sestatic void 2649883Sandreas@sandberg.pp.sedumpKvm(const struct kvm_xsave &xsave) 2659883Sandreas@sandberg.pp.se{ 2669883Sandreas@sandberg.pp.se inform("KVM XSAVE:\n"); 2679883Sandreas@sandberg.pp.se 2689883Sandreas@sandberg.pp.se Trace::dump((Tick)-1, "xsave.region", 2699883Sandreas@sandberg.pp.se xsave.region, sizeof(xsave.region)); 2709883Sandreas@sandberg.pp.se} 2719883Sandreas@sandberg.pp.se 2729883Sandreas@sandberg.pp.sestatic void 2739883Sandreas@sandberg.pp.sedumpKvm(const struct kvm_vcpu_events &events) 2749883Sandreas@sandberg.pp.se{ 2759883Sandreas@sandberg.pp.se inform("vCPU events:\n"); 2769883Sandreas@sandberg.pp.se 2779883Sandreas@sandberg.pp.se inform("\tException: [inj: %i, nr: %i, has_ec: %i, ec: %i]\n", 2789883Sandreas@sandberg.pp.se events.exception.injected, events.exception.nr, 2799883Sandreas@sandberg.pp.se events.exception.has_error_code, events.exception.error_code); 2809883Sandreas@sandberg.pp.se 2819883Sandreas@sandberg.pp.se inform("\tInterrupt: [inj: %i, nr: %i, soft: %i]\n", 2829883Sandreas@sandberg.pp.se events.interrupt.injected, events.interrupt.nr, 2839883Sandreas@sandberg.pp.se events.interrupt.soft); 2849883Sandreas@sandberg.pp.se 2859883Sandreas@sandberg.pp.se inform("\tNMI: [inj: %i, pending: %i, masked: %i]\n", 2869883Sandreas@sandberg.pp.se events.nmi.injected, events.nmi.pending, 2879883Sandreas@sandberg.pp.se events.nmi.masked); 2889883Sandreas@sandberg.pp.se 2899883Sandreas@sandberg.pp.se inform("\tSIPI vector: 0x%x\n", events.sipi_vector); 2909883Sandreas@sandberg.pp.se inform("\tFlags: 0x%x\n", events.flags); 2919883Sandreas@sandberg.pp.se} 2929883Sandreas@sandberg.pp.se 2939884Sandreas@sandberg.pp.sestatic bool 2949884Sandreas@sandberg.pp.seisCanonicalAddress(uint64_t addr) 2959884Sandreas@sandberg.pp.se{ 2969884Sandreas@sandberg.pp.se // x86-64 doesn't currently use the full 64-bit virtual address 2979884Sandreas@sandberg.pp.se // space, instead it uses signed 48 bit addresses that are 2989884Sandreas@sandberg.pp.se // sign-extended to 64 bits. Such addresses are known as 2999884Sandreas@sandberg.pp.se // "canonical". 3009884Sandreas@sandberg.pp.se uint64_t upper_half(addr & 0xffff800000000000ULL); 3019884Sandreas@sandberg.pp.se return upper_half == 0 || upper_half == 0xffff800000000000; 3029884Sandreas@sandberg.pp.se} 3039884Sandreas@sandberg.pp.se 3049884Sandreas@sandberg.pp.sestatic void 3059884Sandreas@sandberg.pp.secheckSeg(const char *name, const int idx, const struct kvm_segment &seg, 3069884Sandreas@sandberg.pp.se struct kvm_sregs sregs) 3079884Sandreas@sandberg.pp.se{ 3089884Sandreas@sandberg.pp.se // Check the register base 3099884Sandreas@sandberg.pp.se switch (idx) { 3109884Sandreas@sandberg.pp.se case MISCREG_TSL: 3119884Sandreas@sandberg.pp.se case MISCREG_TR: 3129884Sandreas@sandberg.pp.se case MISCREG_FS: 3139884Sandreas@sandberg.pp.se case MISCREG_GS: 3149884Sandreas@sandberg.pp.se if (!isCanonicalAddress(seg.base)) 3159884Sandreas@sandberg.pp.se warn("Illegal %s base: 0x%x\n", name, seg.base); 3169884Sandreas@sandberg.pp.se break; 3179884Sandreas@sandberg.pp.se 3189884Sandreas@sandberg.pp.se case MISCREG_SS: 3199884Sandreas@sandberg.pp.se case MISCREG_DS: 3209884Sandreas@sandberg.pp.se case MISCREG_ES: 3219884Sandreas@sandberg.pp.se if (seg.unusable) 3229884Sandreas@sandberg.pp.se break; 3239884Sandreas@sandberg.pp.se case MISCREG_CS: 3249884Sandreas@sandberg.pp.se if (seg.base & 0xffffffff00000000ULL) 3259884Sandreas@sandberg.pp.se warn("Illegal %s base: 0x%x\n", name, seg.base); 3269884Sandreas@sandberg.pp.se break; 3279884Sandreas@sandberg.pp.se } 3289884Sandreas@sandberg.pp.se 3299884Sandreas@sandberg.pp.se // Check the type 3309884Sandreas@sandberg.pp.se switch (idx) { 3319884Sandreas@sandberg.pp.se case MISCREG_CS: 3329884Sandreas@sandberg.pp.se switch (seg.type) { 3339884Sandreas@sandberg.pp.se case 3: 3349884Sandreas@sandberg.pp.se if (seg.dpl != 0) 3359884Sandreas@sandberg.pp.se warn("CS type is 3 but dpl != 0.\n"); 3369884Sandreas@sandberg.pp.se break; 3379884Sandreas@sandberg.pp.se case 9: 3389884Sandreas@sandberg.pp.se case 11: 3399884Sandreas@sandberg.pp.se if (seg.dpl != sregs.ss.dpl) 3409884Sandreas@sandberg.pp.se warn("CS type is %i but CS DPL != SS DPL\n", seg.type); 3419884Sandreas@sandberg.pp.se break; 3429884Sandreas@sandberg.pp.se case 13: 3439884Sandreas@sandberg.pp.se case 15: 3449884Sandreas@sandberg.pp.se if (seg.dpl > sregs.ss.dpl) 3459884Sandreas@sandberg.pp.se warn("CS type is %i but CS DPL > SS DPL\n", seg.type); 3469884Sandreas@sandberg.pp.se break; 3479884Sandreas@sandberg.pp.se default: 3489884Sandreas@sandberg.pp.se warn("Illegal CS type: %i\n", seg.type); 3499884Sandreas@sandberg.pp.se break; 3509884Sandreas@sandberg.pp.se } 3519884Sandreas@sandberg.pp.se break; 3529884Sandreas@sandberg.pp.se 3539884Sandreas@sandberg.pp.se case MISCREG_SS: 3549884Sandreas@sandberg.pp.se if (seg.unusable) 3559884Sandreas@sandberg.pp.se break; 3569884Sandreas@sandberg.pp.se switch (seg.type) { 3579884Sandreas@sandberg.pp.se case 3: 3589884Sandreas@sandberg.pp.se if (sregs.cs.type == 3 && seg.dpl != 0) 3599884Sandreas@sandberg.pp.se warn("CS type is 3, but SS DPL is != 0.\n"); 3609884Sandreas@sandberg.pp.se /* FALLTHROUGH */ 3619884Sandreas@sandberg.pp.se case 7: 3629884Sandreas@sandberg.pp.se if (!(sregs.cr0 & 1) && seg.dpl != 0) 3639884Sandreas@sandberg.pp.se warn("SS DPL is %i, but CR0 PE is 0\n", seg.dpl); 3649884Sandreas@sandberg.pp.se break; 3659884Sandreas@sandberg.pp.se default: 3669884Sandreas@sandberg.pp.se warn("Illegal SS type: %i\n", seg.type); 3679884Sandreas@sandberg.pp.se break; 3689884Sandreas@sandberg.pp.se } 3699884Sandreas@sandberg.pp.se break; 3709884Sandreas@sandberg.pp.se 3719884Sandreas@sandberg.pp.se case MISCREG_DS: 3729884Sandreas@sandberg.pp.se case MISCREG_ES: 3739884Sandreas@sandberg.pp.se case MISCREG_FS: 3749884Sandreas@sandberg.pp.se case MISCREG_GS: 3759884Sandreas@sandberg.pp.se if (seg.unusable) 3769884Sandreas@sandberg.pp.se break; 3779884Sandreas@sandberg.pp.se if (!(seg.type & 0x1) || 3789884Sandreas@sandberg.pp.se ((seg.type & 0x8) && !(seg.type & 0x2))) 3799884Sandreas@sandberg.pp.se warn("%s has an illegal type field: %i\n", name, seg.type); 3809884Sandreas@sandberg.pp.se break; 3819884Sandreas@sandberg.pp.se 3829884Sandreas@sandberg.pp.se case MISCREG_TR: 3839884Sandreas@sandberg.pp.se // TODO: We should check the CPU mode 3849884Sandreas@sandberg.pp.se if (seg.type != 3 && seg.type != 11) 3859884Sandreas@sandberg.pp.se warn("%s: Illegal segment type (%i)\n", name, seg.type); 3869884Sandreas@sandberg.pp.se break; 3879884Sandreas@sandberg.pp.se 3889884Sandreas@sandberg.pp.se case MISCREG_TSL: 3899884Sandreas@sandberg.pp.se if (seg.unusable) 3909884Sandreas@sandberg.pp.se break; 3919884Sandreas@sandberg.pp.se if (seg.type != 2) 3929884Sandreas@sandberg.pp.se warn("%s: Illegal segment type (%i)\n", name, seg.type); 3939884Sandreas@sandberg.pp.se break; 3949884Sandreas@sandberg.pp.se } 3959884Sandreas@sandberg.pp.se 3969884Sandreas@sandberg.pp.se switch (idx) { 3979884Sandreas@sandberg.pp.se case MISCREG_SS: 3989884Sandreas@sandberg.pp.se case MISCREG_DS: 3999884Sandreas@sandberg.pp.se case MISCREG_ES: 4009884Sandreas@sandberg.pp.se case MISCREG_FS: 4019884Sandreas@sandberg.pp.se case MISCREG_GS: 4029884Sandreas@sandberg.pp.se if (seg.unusable) 4039884Sandreas@sandberg.pp.se break; 4049884Sandreas@sandberg.pp.se case MISCREG_CS: 4059884Sandreas@sandberg.pp.se if (!seg.s) 4069884Sandreas@sandberg.pp.se warn("%s: S flag not set\n", name); 4079884Sandreas@sandberg.pp.se break; 4089884Sandreas@sandberg.pp.se 4099884Sandreas@sandberg.pp.se case MISCREG_TSL: 4109884Sandreas@sandberg.pp.se if (seg.unusable) 4119884Sandreas@sandberg.pp.se break; 4129884Sandreas@sandberg.pp.se case MISCREG_TR: 4139884Sandreas@sandberg.pp.se if (seg.s) 4149884Sandreas@sandberg.pp.se warn("%s: S flag is set\n", name); 4159884Sandreas@sandberg.pp.se break; 4169884Sandreas@sandberg.pp.se } 4179884Sandreas@sandberg.pp.se 4189884Sandreas@sandberg.pp.se switch (idx) { 4199884Sandreas@sandberg.pp.se case MISCREG_SS: 4209884Sandreas@sandberg.pp.se case MISCREG_DS: 4219884Sandreas@sandberg.pp.se case MISCREG_ES: 4229884Sandreas@sandberg.pp.se case MISCREG_FS: 4239884Sandreas@sandberg.pp.se case MISCREG_GS: 4249884Sandreas@sandberg.pp.se case MISCREG_TSL: 4259884Sandreas@sandberg.pp.se if (seg.unusable) 4269884Sandreas@sandberg.pp.se break; 4279884Sandreas@sandberg.pp.se case MISCREG_TR: 4289884Sandreas@sandberg.pp.se case MISCREG_CS: 4299884Sandreas@sandberg.pp.se if (!seg.present) 4309884Sandreas@sandberg.pp.se warn("%s: P flag not set\n", name); 4319884Sandreas@sandberg.pp.se 4329884Sandreas@sandberg.pp.se if (((seg.limit & 0xFFF) == 0 && seg.g) || 4339884Sandreas@sandberg.pp.se ((seg.limit & 0xFFF00000) != 0 && !seg.g)) { 4349884Sandreas@sandberg.pp.se warn("%s limit (0x%x) and g (%i) combination is illegal.\n", 4359884Sandreas@sandberg.pp.se name, seg.limit, seg.g); 4369884Sandreas@sandberg.pp.se } 4379884Sandreas@sandberg.pp.se break; 4389884Sandreas@sandberg.pp.se } 4399884Sandreas@sandberg.pp.se 4409884Sandreas@sandberg.pp.se // TODO: Check CS DB 4419884Sandreas@sandberg.pp.se} 4429884Sandreas@sandberg.pp.se 4439883Sandreas@sandberg.pp.seX86KvmCPU::X86KvmCPU(X86KvmCPUParams *params) 4449883Sandreas@sandberg.pp.se : BaseKvmCPU(params) 4459883Sandreas@sandberg.pp.se{ 4469883Sandreas@sandberg.pp.se Kvm &kvm(vm.kvm); 4479883Sandreas@sandberg.pp.se 4489883Sandreas@sandberg.pp.se if (!kvm.capSetTSSAddress()) 4499883Sandreas@sandberg.pp.se panic("KVM: Missing capability (KVM_CAP_SET_TSS_ADDR)\n"); 4509883Sandreas@sandberg.pp.se if (!kvm.capExtendedCPUID()) 4519883Sandreas@sandberg.pp.se panic("KVM: Missing capability (KVM_CAP_EXT_CPUID)\n"); 4529883Sandreas@sandberg.pp.se if (!kvm.capUserNMI()) 4539883Sandreas@sandberg.pp.se warn("KVM: Missing capability (KVM_CAP_USER_NMI)\n"); 4549883Sandreas@sandberg.pp.se if (!kvm.capVCPUEvents()) 4559883Sandreas@sandberg.pp.se warn("KVM: Missing capability (KVM_CAP_VCPU_EVENTS)\n"); 4569883Sandreas@sandberg.pp.se 4579883Sandreas@sandberg.pp.se haveDebugRegs = kvm.capDebugRegs(); 4589883Sandreas@sandberg.pp.se haveXSave = kvm.capXSave(); 4599883Sandreas@sandberg.pp.se haveXCRs = kvm.capXCRs(); 4609883Sandreas@sandberg.pp.se} 4619883Sandreas@sandberg.pp.se 4629883Sandreas@sandberg.pp.seX86KvmCPU::~X86KvmCPU() 4639883Sandreas@sandberg.pp.se{ 4649883Sandreas@sandberg.pp.se} 4659883Sandreas@sandberg.pp.se 4669883Sandreas@sandberg.pp.sevoid 4679883Sandreas@sandberg.pp.seX86KvmCPU::startup() 4689883Sandreas@sandberg.pp.se{ 4699883Sandreas@sandberg.pp.se BaseKvmCPU::startup(); 4709883Sandreas@sandberg.pp.se 4719883Sandreas@sandberg.pp.se updateCPUID(); 4729883Sandreas@sandberg.pp.se 4739883Sandreas@sandberg.pp.se io_req.setThreadContext(tc->contextId(), 0); 4749883Sandreas@sandberg.pp.se 4759883Sandreas@sandberg.pp.se // TODO: Do we need to create an identity mapped TSS area? We 4769883Sandreas@sandberg.pp.se // should call kvm.vm.setTSSAddress() here in that case. It should 4779883Sandreas@sandberg.pp.se // only be needed for old versions of the virtualization 4789883Sandreas@sandberg.pp.se // extensions. We should make sure that the identity range is 4799883Sandreas@sandberg.pp.se // reserved in the e820 memory map in that case. 4809883Sandreas@sandberg.pp.se} 4819883Sandreas@sandberg.pp.se 4829883Sandreas@sandberg.pp.sevoid 4839883Sandreas@sandberg.pp.seX86KvmCPU::dump() 4849883Sandreas@sandberg.pp.se{ 4859883Sandreas@sandberg.pp.se dumpIntRegs(); 4869883Sandreas@sandberg.pp.se dumpFpuRegs(); 4879883Sandreas@sandberg.pp.se dumpSpecRegs(); 4889883Sandreas@sandberg.pp.se dumpDebugRegs(); 4899883Sandreas@sandberg.pp.se dumpXCRs(); 4909883Sandreas@sandberg.pp.se dumpVCpuEvents(); 4919883Sandreas@sandberg.pp.se dumpMSRs(); 4929883Sandreas@sandberg.pp.se dumpXSave(); 4939883Sandreas@sandberg.pp.se} 4949883Sandreas@sandberg.pp.se 4959883Sandreas@sandberg.pp.sevoid 4969883Sandreas@sandberg.pp.seX86KvmCPU::dumpFpuRegs() const 4979883Sandreas@sandberg.pp.se{ 4989883Sandreas@sandberg.pp.se struct kvm_fpu fpu; 4999883Sandreas@sandberg.pp.se getFPUState(fpu); 5009883Sandreas@sandberg.pp.se dumpKvm(fpu); 5019883Sandreas@sandberg.pp.se} 5029883Sandreas@sandberg.pp.se 5039883Sandreas@sandberg.pp.sevoid 5049883Sandreas@sandberg.pp.seX86KvmCPU::dumpIntRegs() const 5059883Sandreas@sandberg.pp.se{ 5069883Sandreas@sandberg.pp.se struct kvm_regs regs; 5079883Sandreas@sandberg.pp.se getRegisters(regs); 5089883Sandreas@sandberg.pp.se dumpKvm(regs); 5099883Sandreas@sandberg.pp.se} 5109883Sandreas@sandberg.pp.se 5119883Sandreas@sandberg.pp.sevoid 5129883Sandreas@sandberg.pp.seX86KvmCPU::dumpSpecRegs() const 5139883Sandreas@sandberg.pp.se{ 5149883Sandreas@sandberg.pp.se struct kvm_sregs sregs; 5159883Sandreas@sandberg.pp.se getSpecialRegisters(sregs); 5169883Sandreas@sandberg.pp.se dumpKvm(sregs); 5179883Sandreas@sandberg.pp.se} 5189883Sandreas@sandberg.pp.se 5199883Sandreas@sandberg.pp.sevoid 5209883Sandreas@sandberg.pp.seX86KvmCPU::dumpDebugRegs() const 5219883Sandreas@sandberg.pp.se{ 5229883Sandreas@sandberg.pp.se if (haveDebugRegs) { 5239883Sandreas@sandberg.pp.se#ifdef KVM_GET_DEBUGREGS 5249883Sandreas@sandberg.pp.se struct kvm_debugregs dregs; 5259883Sandreas@sandberg.pp.se getDebugRegisters(dregs); 5269883Sandreas@sandberg.pp.se dumpKvm(dregs); 5279883Sandreas@sandberg.pp.se#endif 5289883Sandreas@sandberg.pp.se } else { 5299883Sandreas@sandberg.pp.se inform("Debug registers not supported by kernel.\n"); 5309883Sandreas@sandberg.pp.se } 5319883Sandreas@sandberg.pp.se} 5329883Sandreas@sandberg.pp.se 5339883Sandreas@sandberg.pp.sevoid 5349883Sandreas@sandberg.pp.seX86KvmCPU::dumpXCRs() const 5359883Sandreas@sandberg.pp.se{ 5369883Sandreas@sandberg.pp.se if (haveXCRs) { 5379883Sandreas@sandberg.pp.se struct kvm_xcrs xcrs; 5389883Sandreas@sandberg.pp.se getXCRs(xcrs); 5399883Sandreas@sandberg.pp.se dumpKvm(xcrs); 5409883Sandreas@sandberg.pp.se } else { 5419883Sandreas@sandberg.pp.se inform("XCRs not supported by kernel.\n"); 5429883Sandreas@sandberg.pp.se } 5439883Sandreas@sandberg.pp.se} 5449883Sandreas@sandberg.pp.se 5459883Sandreas@sandberg.pp.sevoid 5469883Sandreas@sandberg.pp.seX86KvmCPU::dumpXSave() const 5479883Sandreas@sandberg.pp.se{ 5489883Sandreas@sandberg.pp.se if (haveXSave) { 5499883Sandreas@sandberg.pp.se struct kvm_xsave xsave; 5509883Sandreas@sandberg.pp.se getXSave(xsave); 5519883Sandreas@sandberg.pp.se dumpKvm(xsave); 5529883Sandreas@sandberg.pp.se } else { 5539883Sandreas@sandberg.pp.se inform("XSave not supported by kernel.\n"); 5549883Sandreas@sandberg.pp.se } 5559883Sandreas@sandberg.pp.se} 5569883Sandreas@sandberg.pp.se 5579883Sandreas@sandberg.pp.sevoid 5589883Sandreas@sandberg.pp.seX86KvmCPU::dumpVCpuEvents() const 5599883Sandreas@sandberg.pp.se{ 5609883Sandreas@sandberg.pp.se struct kvm_vcpu_events events; 5619883Sandreas@sandberg.pp.se getVCpuEvents(events); 5629883Sandreas@sandberg.pp.se dumpKvm(events); 5639883Sandreas@sandberg.pp.se} 5649883Sandreas@sandberg.pp.se 5659883Sandreas@sandberg.pp.sevoid 5669883Sandreas@sandberg.pp.seX86KvmCPU::dumpMSRs() const 5679883Sandreas@sandberg.pp.se{ 5689883Sandreas@sandberg.pp.se const Kvm::MSRIndexVector &supported_msrs(vm.kvm.getSupportedMSRs()); 5699883Sandreas@sandberg.pp.se std::unique_ptr<struct kvm_msrs> msrs( 5709883Sandreas@sandberg.pp.se newVarStruct<struct kvm_msrs, struct kvm_msr_entry>( 5719883Sandreas@sandberg.pp.se supported_msrs.size())); 5729883Sandreas@sandberg.pp.se 5739883Sandreas@sandberg.pp.se msrs->nmsrs = supported_msrs.size(); 5749883Sandreas@sandberg.pp.se for (int i = 0; i < supported_msrs.size(); ++i) { 5759883Sandreas@sandberg.pp.se struct kvm_msr_entry &e(msrs->entries[i]); 5769883Sandreas@sandberg.pp.se e.index = supported_msrs[i]; 5779883Sandreas@sandberg.pp.se e.reserved = 0; 5789883Sandreas@sandberg.pp.se e.data = 0; 5799883Sandreas@sandberg.pp.se } 5809883Sandreas@sandberg.pp.se getMSRs(*msrs.get()); 5819883Sandreas@sandberg.pp.se 5829883Sandreas@sandberg.pp.se dumpKvm(*msrs.get()); 5839883Sandreas@sandberg.pp.se} 5849883Sandreas@sandberg.pp.se 5859883Sandreas@sandberg.pp.sevoid 5869883Sandreas@sandberg.pp.seX86KvmCPU::updateKvmState() 5879883Sandreas@sandberg.pp.se{ 5889883Sandreas@sandberg.pp.se updateKvmStateRegs(); 5899883Sandreas@sandberg.pp.se updateKvmStateSRegs(); 5909883Sandreas@sandberg.pp.se updateKvmStateFPU(); 5919883Sandreas@sandberg.pp.se updateKvmStateMSRs(); 5929883Sandreas@sandberg.pp.se 5939883Sandreas@sandberg.pp.se DPRINTF(KvmContext, "X86KvmCPU::updateKvmState():\n"); 5949883Sandreas@sandberg.pp.se if (DTRACE(KvmContext)) 5959883Sandreas@sandberg.pp.se dump(); 5969883Sandreas@sandberg.pp.se} 5979883Sandreas@sandberg.pp.se 5989883Sandreas@sandberg.pp.sevoid 5999883Sandreas@sandberg.pp.seX86KvmCPU::updateKvmStateRegs() 6009883Sandreas@sandberg.pp.se{ 6019883Sandreas@sandberg.pp.se struct kvm_regs regs; 6029883Sandreas@sandberg.pp.se 6039883Sandreas@sandberg.pp.se#define APPLY_IREG(kreg, mreg) regs.kreg = tc->readIntReg(mreg) 6049883Sandreas@sandberg.pp.se FOREACH_IREG(); 6059883Sandreas@sandberg.pp.se#undef APPLY_IREG 6069883Sandreas@sandberg.pp.se 6079883Sandreas@sandberg.pp.se regs.rip = tc->instAddr(); 6089883Sandreas@sandberg.pp.se 6099883Sandreas@sandberg.pp.se /* You might think that setting regs.rflags to the contents 6109883Sandreas@sandberg.pp.se * MISCREG_RFLAGS here would suffice. In that case you're 6119883Sandreas@sandberg.pp.se * mistaken. We need to reconstruct it from a bunch of ucode 6129883Sandreas@sandberg.pp.se * registers and wave a dead chicken over it (aka mask out and set 6139883Sandreas@sandberg.pp.se * reserved bits) to get it to work. 6149883Sandreas@sandberg.pp.se */ 6159883Sandreas@sandberg.pp.se regs.rflags = X86ISA::getRFlags(tc); 6169883Sandreas@sandberg.pp.se 6179883Sandreas@sandberg.pp.se setRegisters(regs); 6189883Sandreas@sandberg.pp.se} 6199883Sandreas@sandberg.pp.se 6209883Sandreas@sandberg.pp.sestatic inline void 6219883Sandreas@sandberg.pp.sesetKvmSegmentReg(ThreadContext *tc, struct kvm_segment &kvm_seg, 6229883Sandreas@sandberg.pp.se const int index) 6239883Sandreas@sandberg.pp.se{ 6249883Sandreas@sandberg.pp.se SegAttr attr(tc->readMiscRegNoEffect(MISCREG_SEG_ATTR(index))); 6259883Sandreas@sandberg.pp.se 6269883Sandreas@sandberg.pp.se kvm_seg.base = tc->readMiscRegNoEffect(MISCREG_SEG_BASE(index)); 6279883Sandreas@sandberg.pp.se kvm_seg.limit = tc->readMiscRegNoEffect(MISCREG_SEG_LIMIT(index)); 6289883Sandreas@sandberg.pp.se kvm_seg.selector = tc->readMiscRegNoEffect(MISCREG_SEG_SEL(index)); 6299883Sandreas@sandberg.pp.se kvm_seg.type = attr.type; 6309883Sandreas@sandberg.pp.se kvm_seg.present = attr.present; 6319883Sandreas@sandberg.pp.se kvm_seg.dpl = attr.dpl; 6329883Sandreas@sandberg.pp.se kvm_seg.db = attr.defaultSize; 6339883Sandreas@sandberg.pp.se kvm_seg.s = attr.system; 6349883Sandreas@sandberg.pp.se kvm_seg.l = attr.longMode; 6359883Sandreas@sandberg.pp.se kvm_seg.g = attr.granularity; 6369883Sandreas@sandberg.pp.se kvm_seg.avl = attr.avl; 6379883Sandreas@sandberg.pp.se 6389883Sandreas@sandberg.pp.se // A segment is unusable when the selector is zero. There is a 6399883Sandreas@sandberg.pp.se // attr.unusable flag in gem5, but it seems unused. 6409883Sandreas@sandberg.pp.se // 6419883Sandreas@sandberg.pp.se // TODO: Are there corner cases where this doesn't work? 6429883Sandreas@sandberg.pp.se kvm_seg.unusable = (kvm_seg.selector == 0); 6439883Sandreas@sandberg.pp.se} 6449883Sandreas@sandberg.pp.se 6459883Sandreas@sandberg.pp.sestatic inline void 6469883Sandreas@sandberg.pp.sesetKvmDTableReg(ThreadContext *tc, struct kvm_dtable &kvm_dtable, 6479883Sandreas@sandberg.pp.se const int index) 6489883Sandreas@sandberg.pp.se{ 6499883Sandreas@sandberg.pp.se kvm_dtable.base = tc->readMiscRegNoEffect(MISCREG_SEG_BASE(index)); 6509883Sandreas@sandberg.pp.se kvm_dtable.limit = tc->readMiscRegNoEffect(MISCREG_SEG_LIMIT(index)); 6519883Sandreas@sandberg.pp.se} 6529883Sandreas@sandberg.pp.se 6539886Sandreas@sandberg.pp.sestatic void 6549886Sandreas@sandberg.pp.seforceSegAccessed(struct kvm_segment &seg) 6559886Sandreas@sandberg.pp.se{ 6569886Sandreas@sandberg.pp.se // Intel's VMX requires that (some) usable segments are flagged as 6579886Sandreas@sandberg.pp.se // 'accessed' (i.e., the lowest bit in the segment type is set) 6589886Sandreas@sandberg.pp.se // when entering VMX. This wouldn't necessary be the case even if 6599886Sandreas@sandberg.pp.se // gem5 did set the access bits correctly, so we force it to one 6609886Sandreas@sandberg.pp.se // in that case. 6619886Sandreas@sandberg.pp.se if (!seg.unusable) 6629886Sandreas@sandberg.pp.se seg.type |= SEG_TYPE_BIT_ACCESSED; 6639886Sandreas@sandberg.pp.se} 6649886Sandreas@sandberg.pp.se 6659883Sandreas@sandberg.pp.sevoid 6669883Sandreas@sandberg.pp.seX86KvmCPU::updateKvmStateSRegs() 6679883Sandreas@sandberg.pp.se{ 6689883Sandreas@sandberg.pp.se struct kvm_sregs sregs; 6699883Sandreas@sandberg.pp.se 6709883Sandreas@sandberg.pp.se#define APPLY_SREG(kreg, mreg) sregs.kreg = tc->readMiscRegNoEffect(mreg) 6719883Sandreas@sandberg.pp.se#define APPLY_SEGMENT(kreg, idx) setKvmSegmentReg(tc, sregs.kreg, idx) 6729883Sandreas@sandberg.pp.se#define APPLY_DTABLE(kreg, idx) setKvmDTableReg(tc, sregs.kreg, idx) 6739883Sandreas@sandberg.pp.se 6749883Sandreas@sandberg.pp.se FOREACH_SREG(); 6759883Sandreas@sandberg.pp.se FOREACH_SEGMENT(); 6769883Sandreas@sandberg.pp.se FOREACH_DTABLE(); 6779883Sandreas@sandberg.pp.se 6789883Sandreas@sandberg.pp.se#undef APPLY_SREG 6799883Sandreas@sandberg.pp.se#undef APPLY_SEGMENT 6809883Sandreas@sandberg.pp.se#undef APPLY_DTABLE 6819883Sandreas@sandberg.pp.se 6829883Sandreas@sandberg.pp.se // Clear the interrupt bitmap 6839883Sandreas@sandberg.pp.se memset(&sregs.interrupt_bitmap, 0, sizeof(sregs.interrupt_bitmap)); 6849883Sandreas@sandberg.pp.se 6859886Sandreas@sandberg.pp.se // VMX requires CS, SS, DS, ES, FS, and GS to have the accessed 6869886Sandreas@sandberg.pp.se // bit in the type field set. 6879886Sandreas@sandberg.pp.se forceSegAccessed(sregs.cs); 6889886Sandreas@sandberg.pp.se forceSegAccessed(sregs.ss); 6899886Sandreas@sandberg.pp.se forceSegAccessed(sregs.ds); 6909886Sandreas@sandberg.pp.se forceSegAccessed(sregs.es); 6919886Sandreas@sandberg.pp.se forceSegAccessed(sregs.fs); 6929886Sandreas@sandberg.pp.se forceSegAccessed(sregs.gs); 6939886Sandreas@sandberg.pp.se 6949886Sandreas@sandberg.pp.se // There are currently some cases where the active task isn't 6959886Sandreas@sandberg.pp.se // marked as busy. This is illegal in VMX, so we force it to busy. 6969886Sandreas@sandberg.pp.se if (sregs.tr.type == SEG_SYS_TYPE_TSS_AVAILABLE) { 6979886Sandreas@sandberg.pp.se hack("tr.type (%i) is not busy. Forcing the busy bit.\n", 6989886Sandreas@sandberg.pp.se sregs.tr.type); 6999886Sandreas@sandberg.pp.se sregs.tr.type = SEG_SYS_TYPE_TSS_BUSY; 7009886Sandreas@sandberg.pp.se } 7019886Sandreas@sandberg.pp.se 7029886Sandreas@sandberg.pp.se // VMX requires the DPL of SS and CS to be the same for 7039886Sandreas@sandberg.pp.se // non-conforming code segments. It seems like m5 doesn't set the 7049886Sandreas@sandberg.pp.se // DPL of SS correctly when taking interrupts, so we need to fix 7059886Sandreas@sandberg.pp.se // that here. 7069886Sandreas@sandberg.pp.se if ((sregs.cs.type == SEG_CS_TYPE_ACCESSED || 7079886Sandreas@sandberg.pp.se sregs.cs.type == SEG_CS_TYPE_READ_ACCESSED) && 7089886Sandreas@sandberg.pp.se sregs.cs.dpl != sregs.ss.dpl) { 7099886Sandreas@sandberg.pp.se 7109886Sandreas@sandberg.pp.se hack("CS.DPL (%i) != SS.DPL (%i): Forcing SS.DPL to %i\n", 7119886Sandreas@sandberg.pp.se sregs.cs.dpl, sregs.ss.dpl, sregs.cs.dpl); 7129886Sandreas@sandberg.pp.se sregs.ss.dpl = sregs.cs.dpl; 7139886Sandreas@sandberg.pp.se } 7149886Sandreas@sandberg.pp.se 7159886Sandreas@sandberg.pp.se // Do checks after fixing up the state to avoid getting excessive 7169886Sandreas@sandberg.pp.se // amounts of warnings. 7179884Sandreas@sandberg.pp.se RFLAGS rflags_nocc(tc->readMiscReg(MISCREG_RFLAGS)); 7189884Sandreas@sandberg.pp.se if (!rflags_nocc.vm) { 7199884Sandreas@sandberg.pp.se // Do segment verification if the CPU isn't entering virtual 7209884Sandreas@sandberg.pp.se // 8086 mode. We currently assume that unrestricted guest 7219884Sandreas@sandberg.pp.se // mode is available. 7229884Sandreas@sandberg.pp.se 7239884Sandreas@sandberg.pp.se#define APPLY_SEGMENT(kreg, idx) \ 7249884Sandreas@sandberg.pp.se checkSeg(# kreg, idx + MISCREG_SEG_SEL_BASE, sregs.kreg, sregs) 7259884Sandreas@sandberg.pp.se 7269884Sandreas@sandberg.pp.se FOREACH_SEGMENT(); 7279884Sandreas@sandberg.pp.se#undef APPLY_SEGMENT 7289884Sandreas@sandberg.pp.se } 7299886Sandreas@sandberg.pp.se 7309883Sandreas@sandberg.pp.se setSpecialRegisters(sregs); 7319883Sandreas@sandberg.pp.se} 7329883Sandreas@sandberg.pp.sevoid 7339883Sandreas@sandberg.pp.seX86KvmCPU::updateKvmStateFPU() 7349883Sandreas@sandberg.pp.se{ 7359883Sandreas@sandberg.pp.se warn_once("X86KvmCPU::updateKvmStateFPU not implemented\n"); 7369883Sandreas@sandberg.pp.se} 7379883Sandreas@sandberg.pp.se 7389883Sandreas@sandberg.pp.sevoid 7399883Sandreas@sandberg.pp.seX86KvmCPU::updateKvmStateMSRs() 7409883Sandreas@sandberg.pp.se{ 7419883Sandreas@sandberg.pp.se KvmMSRVector msrs; 7429883Sandreas@sandberg.pp.se 7439883Sandreas@sandberg.pp.se const Kvm::MSRIndexVector &indices(getMsrIntersection()); 7449883Sandreas@sandberg.pp.se 7459883Sandreas@sandberg.pp.se for (auto it = indices.cbegin(); it != indices.cend(); ++it) { 7469883Sandreas@sandberg.pp.se struct kvm_msr_entry e; 7479883Sandreas@sandberg.pp.se 7489883Sandreas@sandberg.pp.se e.index = *it; 7499883Sandreas@sandberg.pp.se e.reserved = 0; 7509883Sandreas@sandberg.pp.se e.data = tc->readMiscReg(msrMap.at(*it)); 7519883Sandreas@sandberg.pp.se DPRINTF(KvmContext, "Adding MSR: idx: 0x%x, data: 0x%x\n", 7529883Sandreas@sandberg.pp.se e.index, e.data); 7539883Sandreas@sandberg.pp.se 7549883Sandreas@sandberg.pp.se msrs.push_back(e); 7559883Sandreas@sandberg.pp.se } 7569883Sandreas@sandberg.pp.se 7579883Sandreas@sandberg.pp.se setMSRs(msrs); 7589883Sandreas@sandberg.pp.se} 7599883Sandreas@sandberg.pp.se 7609883Sandreas@sandberg.pp.sevoid 7619883Sandreas@sandberg.pp.seX86KvmCPU::updateThreadContext() 7629883Sandreas@sandberg.pp.se{ 7639883Sandreas@sandberg.pp.se DPRINTF(KvmContext, "X86KvmCPU::updateThreadContext():\n"); 7649883Sandreas@sandberg.pp.se if (DTRACE(KvmContext)) 7659883Sandreas@sandberg.pp.se dump(); 7669883Sandreas@sandberg.pp.se 7679883Sandreas@sandberg.pp.se updateThreadContextRegs(); 7689883Sandreas@sandberg.pp.se updateThreadContextSRegs(); 7699883Sandreas@sandberg.pp.se updateThreadContextFPU(); 7709883Sandreas@sandberg.pp.se updateThreadContextMSRs(); 7719883Sandreas@sandberg.pp.se 7729883Sandreas@sandberg.pp.se // The M5 misc reg caches some values from other 7739883Sandreas@sandberg.pp.se // registers. Writing to it with side effects causes it to be 7749883Sandreas@sandberg.pp.se // updated from its source registers. 7759883Sandreas@sandberg.pp.se tc->setMiscReg(MISCREG_M5_REG, 0); 7769883Sandreas@sandberg.pp.se} 7779883Sandreas@sandberg.pp.se 7789883Sandreas@sandberg.pp.sevoid 7799883Sandreas@sandberg.pp.seX86KvmCPU::updateThreadContextRegs() 7809883Sandreas@sandberg.pp.se{ 7819883Sandreas@sandberg.pp.se struct kvm_regs regs; 7829883Sandreas@sandberg.pp.se getRegisters(regs); 7839883Sandreas@sandberg.pp.se 7849883Sandreas@sandberg.pp.se#define APPLY_IREG(kreg, mreg) tc->setIntReg(mreg, regs.kreg) 7859883Sandreas@sandberg.pp.se 7869883Sandreas@sandberg.pp.se FOREACH_IREG(); 7879883Sandreas@sandberg.pp.se 7889883Sandreas@sandberg.pp.se#undef APPLY_IREG 7899883Sandreas@sandberg.pp.se 7909883Sandreas@sandberg.pp.se tc->pcState(PCState(regs.rip)); 7919883Sandreas@sandberg.pp.se 7929883Sandreas@sandberg.pp.se // Flags are spread out across multiple semi-magic registers so we 7939883Sandreas@sandberg.pp.se // need some special care when updating them. 7949883Sandreas@sandberg.pp.se X86ISA::setRFlags(tc, regs.rflags); 7959883Sandreas@sandberg.pp.se} 7969883Sandreas@sandberg.pp.se 7979883Sandreas@sandberg.pp.se 7989883Sandreas@sandberg.pp.seinline void 7999883Sandreas@sandberg.pp.sesetContextSegment(ThreadContext *tc, const struct kvm_segment &kvm_seg, 8009883Sandreas@sandberg.pp.se const int index) 8019883Sandreas@sandberg.pp.se{ 8029883Sandreas@sandberg.pp.se SegAttr attr(0); 8039883Sandreas@sandberg.pp.se 8049883Sandreas@sandberg.pp.se attr.type = kvm_seg.type; 8059883Sandreas@sandberg.pp.se attr.present = kvm_seg.present; 8069883Sandreas@sandberg.pp.se attr.dpl = kvm_seg.dpl; 8079883Sandreas@sandberg.pp.se attr.defaultSize = kvm_seg.db; 8089883Sandreas@sandberg.pp.se attr.system = kvm_seg.s; 8099883Sandreas@sandberg.pp.se attr.longMode = kvm_seg.l; 8109883Sandreas@sandberg.pp.se attr.granularity = kvm_seg.g; 8119883Sandreas@sandberg.pp.se attr.avl = kvm_seg.avl; 8129883Sandreas@sandberg.pp.se attr.unusable = kvm_seg.unusable; 8139883Sandreas@sandberg.pp.se 8149883Sandreas@sandberg.pp.se // We need some setMiscReg magic here to keep the effective base 8159883Sandreas@sandberg.pp.se // addresses in sync. We need an up-to-date version of EFER, so 8169883Sandreas@sandberg.pp.se // make sure this is called after the sregs have been synced. 8179883Sandreas@sandberg.pp.se tc->setMiscReg(MISCREG_SEG_BASE(index), kvm_seg.base); 8189883Sandreas@sandberg.pp.se tc->setMiscReg(MISCREG_SEG_LIMIT(index), kvm_seg.limit); 8199883Sandreas@sandberg.pp.se tc->setMiscReg(MISCREG_SEG_SEL(index), kvm_seg.selector); 8209883Sandreas@sandberg.pp.se tc->setMiscReg(MISCREG_SEG_ATTR(index), attr); 8219883Sandreas@sandberg.pp.se} 8229883Sandreas@sandberg.pp.se 8239883Sandreas@sandberg.pp.seinline void 8249883Sandreas@sandberg.pp.sesetContextSegment(ThreadContext *tc, const struct kvm_dtable &kvm_dtable, 8259883Sandreas@sandberg.pp.se const int index) 8269883Sandreas@sandberg.pp.se{ 8279883Sandreas@sandberg.pp.se // We need some setMiscReg magic here to keep the effective base 8289883Sandreas@sandberg.pp.se // addresses in sync. We need an up-to-date version of EFER, so 8299883Sandreas@sandberg.pp.se // make sure this is called after the sregs have been synced. 8309883Sandreas@sandberg.pp.se tc->setMiscReg(MISCREG_SEG_BASE(index), kvm_dtable.base); 8319883Sandreas@sandberg.pp.se tc->setMiscReg(MISCREG_SEG_LIMIT(index), kvm_dtable.limit); 8329883Sandreas@sandberg.pp.se} 8339883Sandreas@sandberg.pp.se 8349883Sandreas@sandberg.pp.sevoid 8359883Sandreas@sandberg.pp.seX86KvmCPU::updateThreadContextSRegs() 8369883Sandreas@sandberg.pp.se{ 8379883Sandreas@sandberg.pp.se struct kvm_sregs sregs; 8389883Sandreas@sandberg.pp.se getSpecialRegisters(sregs); 8399883Sandreas@sandberg.pp.se 8409883Sandreas@sandberg.pp.se assert(getKvmRunState()->apic_base == sregs.apic_base); 8419883Sandreas@sandberg.pp.se assert(getKvmRunState()->cr8 == sregs.cr8); 8429883Sandreas@sandberg.pp.se 8439883Sandreas@sandberg.pp.se#define APPLY_SREG(kreg, mreg) tc->setMiscRegNoEffect(mreg, sregs.kreg) 8449883Sandreas@sandberg.pp.se#define APPLY_SEGMENT(kreg, idx) setContextSegment(tc, sregs.kreg, idx) 8459883Sandreas@sandberg.pp.se#define APPLY_DTABLE(kreg, idx) setContextSegment(tc, sregs.kreg, idx) 8469883Sandreas@sandberg.pp.se FOREACH_SREG(); 8479883Sandreas@sandberg.pp.se FOREACH_SEGMENT(); 8489883Sandreas@sandberg.pp.se FOREACH_DTABLE(); 8499883Sandreas@sandberg.pp.se#undef APPLY_SREG 8509883Sandreas@sandberg.pp.se#undef APPLY_SEGMENT 8519883Sandreas@sandberg.pp.se#undef APPLY_DTABLE 8529883Sandreas@sandberg.pp.se} 8539883Sandreas@sandberg.pp.se 8549883Sandreas@sandberg.pp.sevoid 8559883Sandreas@sandberg.pp.seX86KvmCPU::updateThreadContextFPU() 8569883Sandreas@sandberg.pp.se{ 8579883Sandreas@sandberg.pp.se warn_once("X86KvmCPU::updateThreadContextFPU not implemented\n"); 8589883Sandreas@sandberg.pp.se} 8599883Sandreas@sandberg.pp.se 8609883Sandreas@sandberg.pp.sevoid 8619883Sandreas@sandberg.pp.seX86KvmCPU::updateThreadContextMSRs() 8629883Sandreas@sandberg.pp.se{ 8639883Sandreas@sandberg.pp.se const Kvm::MSRIndexVector &msrs(getMsrIntersection()); 8649883Sandreas@sandberg.pp.se 8659883Sandreas@sandberg.pp.se std::unique_ptr<struct kvm_msrs> kvm_msrs( 8669883Sandreas@sandberg.pp.se newVarStruct<struct kvm_msrs, struct kvm_msr_entry>(msrs.size())); 8679883Sandreas@sandberg.pp.se struct kvm_msr_entry *entry; 8689883Sandreas@sandberg.pp.se 8699883Sandreas@sandberg.pp.se // Create a list of MSRs to read 8709883Sandreas@sandberg.pp.se kvm_msrs->nmsrs = msrs.size(); 8719883Sandreas@sandberg.pp.se entry = &kvm_msrs->entries[0]; 8729883Sandreas@sandberg.pp.se for (auto it = msrs.cbegin(); it != msrs.cend(); ++it, ++entry) { 8739883Sandreas@sandberg.pp.se entry->index = *it; 8749883Sandreas@sandberg.pp.se entry->reserved = 0; 8759883Sandreas@sandberg.pp.se entry->data = 0; 8769883Sandreas@sandberg.pp.se } 8779883Sandreas@sandberg.pp.se 8789883Sandreas@sandberg.pp.se getMSRs(*kvm_msrs.get()); 8799883Sandreas@sandberg.pp.se 8809883Sandreas@sandberg.pp.se // Update M5's state 8819883Sandreas@sandberg.pp.se entry = &kvm_msrs->entries[0]; 8829883Sandreas@sandberg.pp.se for (int i = 0; i < kvm_msrs->nmsrs; ++i, ++entry) { 8839883Sandreas@sandberg.pp.se DPRINTF(KvmContext, "Setting M5 MSR: idx: 0x%x, data: 0x%x\n", 8849883Sandreas@sandberg.pp.se entry->index, entry->data); 8859883Sandreas@sandberg.pp.se 8869883Sandreas@sandberg.pp.se tc->setMiscReg(X86ISA::msrMap.at(entry->index), entry->data); 8879883Sandreas@sandberg.pp.se } 8889883Sandreas@sandberg.pp.se} 8899883Sandreas@sandberg.pp.se 8909883Sandreas@sandberg.pp.sevoid 8919883Sandreas@sandberg.pp.seX86KvmCPU::deliverInterrupts() 8929883Sandreas@sandberg.pp.se{ 8939883Sandreas@sandberg.pp.se syncThreadContext(); 8949883Sandreas@sandberg.pp.se 8959883Sandreas@sandberg.pp.se Fault fault(interrupts->getInterrupt(tc)); 8969883Sandreas@sandberg.pp.se interrupts->updateIntrInfo(tc); 8979883Sandreas@sandberg.pp.se 8989883Sandreas@sandberg.pp.se X86Interrupt *x86int(dynamic_cast<X86Interrupt *>(fault.get())); 8999883Sandreas@sandberg.pp.se if (x86int) { 9009883Sandreas@sandberg.pp.se struct kvm_interrupt kvm_int; 9019883Sandreas@sandberg.pp.se kvm_int.irq = x86int->getVector(); 9029883Sandreas@sandberg.pp.se 9039883Sandreas@sandberg.pp.se DPRINTF(KvmInt, "Delivering interrupt: %s (%u)\n", 9049883Sandreas@sandberg.pp.se fault->name(), kvm_int.irq); 9059883Sandreas@sandberg.pp.se 9069883Sandreas@sandberg.pp.se kvmInterrupt(kvm_int); 9079883Sandreas@sandberg.pp.se } else if (dynamic_cast<NonMaskableInterrupt *>(fault.get())) { 9089883Sandreas@sandberg.pp.se DPRINTF(KvmInt, "Delivering NMI\n"); 9099883Sandreas@sandberg.pp.se kvmNonMaskableInterrupt(); 9109883Sandreas@sandberg.pp.se } else { 9119883Sandreas@sandberg.pp.se panic("KVM: Unknown interrupt type\n"); 9129883Sandreas@sandberg.pp.se } 9139883Sandreas@sandberg.pp.se 9149883Sandreas@sandberg.pp.se} 9159883Sandreas@sandberg.pp.se 9169883Sandreas@sandberg.pp.seTick 9179883Sandreas@sandberg.pp.seX86KvmCPU::kvmRun(Tick ticks) 9189883Sandreas@sandberg.pp.se{ 9199883Sandreas@sandberg.pp.se struct kvm_run &kvm_run(*getKvmRunState()); 9209883Sandreas@sandberg.pp.se 9219883Sandreas@sandberg.pp.se if (interrupts->checkInterruptsRaw()) { 9229883Sandreas@sandberg.pp.se if (kvm_run.ready_for_interrupt_injection) { 9239883Sandreas@sandberg.pp.se // KVM claims that it is ready for an interrupt. It might 9249883Sandreas@sandberg.pp.se // be lying if we just updated rflags and disabled 9259883Sandreas@sandberg.pp.se // interrupts (e.g., by doing a CPU handover). Let's sync 9269883Sandreas@sandberg.pp.se // the thread context and check if there are /really/ 9279883Sandreas@sandberg.pp.se // interrupts that should be delivered now. 9289883Sandreas@sandberg.pp.se syncThreadContext(); 9299883Sandreas@sandberg.pp.se if (interrupts->checkInterrupts(tc)) { 9309883Sandreas@sandberg.pp.se DPRINTF(KvmInt, 9319883Sandreas@sandberg.pp.se "M5 has pending interrupts, delivering interrupt.\n"); 9329883Sandreas@sandberg.pp.se 9339883Sandreas@sandberg.pp.se deliverInterrupts(); 9349883Sandreas@sandberg.pp.se } else { 9359883Sandreas@sandberg.pp.se DPRINTF(KvmInt, 9369883Sandreas@sandberg.pp.se "Interrupt delivery delayed due to KVM confusion.\n"); 9379883Sandreas@sandberg.pp.se kvm_run.request_interrupt_window = 1; 9389883Sandreas@sandberg.pp.se } 9399883Sandreas@sandberg.pp.se } else if (!kvm_run.request_interrupt_window) { 9409883Sandreas@sandberg.pp.se DPRINTF(KvmInt, 9419883Sandreas@sandberg.pp.se "M5 has pending interrupts, requesting interrupt " 9429883Sandreas@sandberg.pp.se "window.\n"); 9439883Sandreas@sandberg.pp.se kvm_run.request_interrupt_window = 1; 9449883Sandreas@sandberg.pp.se } 9459883Sandreas@sandberg.pp.se } else { 9469883Sandreas@sandberg.pp.se kvm_run.request_interrupt_window = 0; 9479883Sandreas@sandberg.pp.se } 9489883Sandreas@sandberg.pp.se 9499883Sandreas@sandberg.pp.se return kvmRunWrapper(ticks); 9509883Sandreas@sandberg.pp.se} 9519883Sandreas@sandberg.pp.se 9529883Sandreas@sandberg.pp.seTick 9539883Sandreas@sandberg.pp.seX86KvmCPU::kvmRunDrain() 9549883Sandreas@sandberg.pp.se{ 9559883Sandreas@sandberg.pp.se struct kvm_run &kvm_run(*getKvmRunState()); 9569883Sandreas@sandberg.pp.se 9579883Sandreas@sandberg.pp.se if (!archIsDrained()) { 9589883Sandreas@sandberg.pp.se DPRINTF(Drain, "kvmRunDrain: Architecture code isn't drained\n"); 9599883Sandreas@sandberg.pp.se 9609883Sandreas@sandberg.pp.se // Tell KVM to find a suitable place to deliver interrupts. This 9619883Sandreas@sandberg.pp.se // should ensure that pending interrupts have been delivered and 9629883Sandreas@sandberg.pp.se // things are reasonably consistent (i.e., no interrupts pending 9639883Sandreas@sandberg.pp.se // in the guest). 9649883Sandreas@sandberg.pp.se kvm_run.request_interrupt_window = 1; 9659883Sandreas@sandberg.pp.se 9669883Sandreas@sandberg.pp.se // Limit the run to 1 millisecond. That is hopefully enough to 9679883Sandreas@sandberg.pp.se // reach an interrupt window. Otherwise, we'll just try again 9689883Sandreas@sandberg.pp.se // later. 9699883Sandreas@sandberg.pp.se return kvmRunWrapper(1 * SimClock::Float::ms); 9709883Sandreas@sandberg.pp.se } else { 9719883Sandreas@sandberg.pp.se DPRINTF(Drain, "kvmRunDrain: Delivering pending IO\n"); 9729883Sandreas@sandberg.pp.se 9739883Sandreas@sandberg.pp.se return kvmRunWrapper(0); 9749883Sandreas@sandberg.pp.se } 9759883Sandreas@sandberg.pp.se} 9769883Sandreas@sandberg.pp.se 9779883Sandreas@sandberg.pp.seTick 9789883Sandreas@sandberg.pp.seX86KvmCPU::kvmRunWrapper(Tick ticks) 9799883Sandreas@sandberg.pp.se{ 9809883Sandreas@sandberg.pp.se struct kvm_run &kvm_run(*getKvmRunState()); 9819883Sandreas@sandberg.pp.se 9829883Sandreas@sandberg.pp.se // Synchronize the APIC base and CR8 here since they are present 9839883Sandreas@sandberg.pp.se // in the kvm_run struct, which makes the synchronization really 9849883Sandreas@sandberg.pp.se // cheap. 9859883Sandreas@sandberg.pp.se kvm_run.apic_base = tc->readMiscReg(MISCREG_APIC_BASE); 9869883Sandreas@sandberg.pp.se kvm_run.cr8 = tc->readMiscReg(MISCREG_CR8); 9879883Sandreas@sandberg.pp.se 9889883Sandreas@sandberg.pp.se const Tick run_ticks(BaseKvmCPU::kvmRun(ticks)); 9899883Sandreas@sandberg.pp.se 9909883Sandreas@sandberg.pp.se tc->setMiscReg(MISCREG_APIC_BASE, kvm_run.apic_base); 9919883Sandreas@sandberg.pp.se kvm_run.cr8 = tc->readMiscReg(MISCREG_CR8); 9929883Sandreas@sandberg.pp.se 9939883Sandreas@sandberg.pp.se return run_ticks; 9949883Sandreas@sandberg.pp.se} 9959883Sandreas@sandberg.pp.se 9969883Sandreas@sandberg.pp.seuint64_t 9979883Sandreas@sandberg.pp.seX86KvmCPU::getHostCycles() const 9989883Sandreas@sandberg.pp.se{ 9999883Sandreas@sandberg.pp.se return getMSR(MSR_TSC); 10009883Sandreas@sandberg.pp.se} 10019883Sandreas@sandberg.pp.se 10029883Sandreas@sandberg.pp.sevoid 10039883Sandreas@sandberg.pp.seX86KvmCPU::handleIOMiscReg32(int miscreg) 10049883Sandreas@sandberg.pp.se{ 10059883Sandreas@sandberg.pp.se struct kvm_run &kvm_run(*getKvmRunState()); 10069883Sandreas@sandberg.pp.se const uint16_t port(kvm_run.io.port); 10079883Sandreas@sandberg.pp.se 10089883Sandreas@sandberg.pp.se assert(kvm_run.exit_reason == KVM_EXIT_IO); 10099883Sandreas@sandberg.pp.se 10109883Sandreas@sandberg.pp.se if (kvm_run.io.size != 4) { 10119883Sandreas@sandberg.pp.se panic("Unexpected IO size (%u) for address 0x%x.\n", 10129883Sandreas@sandberg.pp.se kvm_run.io.size, port); 10139883Sandreas@sandberg.pp.se } 10149883Sandreas@sandberg.pp.se 10159883Sandreas@sandberg.pp.se if (kvm_run.io.count != 1) { 10169883Sandreas@sandberg.pp.se panic("Unexpected IO count (%u) for address 0x%x.\n", 10179883Sandreas@sandberg.pp.se kvm_run.io.count, port); 10189883Sandreas@sandberg.pp.se } 10199883Sandreas@sandberg.pp.se 10209883Sandreas@sandberg.pp.se uint32_t *data((uint32_t *)getGuestData(kvm_run.io.data_offset)); 10219883Sandreas@sandberg.pp.se if (kvm_run.io.direction == KVM_EXIT_IO_OUT) 10229883Sandreas@sandberg.pp.se tc->setMiscReg(miscreg, *data); 10239883Sandreas@sandberg.pp.se else 10249883Sandreas@sandberg.pp.se *data = tc->readMiscRegNoEffect(miscreg); 10259883Sandreas@sandberg.pp.se} 10269883Sandreas@sandberg.pp.se 10279883Sandreas@sandberg.pp.seTick 10289883Sandreas@sandberg.pp.seX86KvmCPU::handleKvmExitIO() 10299883Sandreas@sandberg.pp.se{ 10309883Sandreas@sandberg.pp.se struct kvm_run &kvm_run(*getKvmRunState()); 10319883Sandreas@sandberg.pp.se bool isWrite(kvm_run.io.direction == KVM_EXIT_IO_OUT); 10329883Sandreas@sandberg.pp.se unsigned char *guestData(getGuestData(kvm_run.io.data_offset)); 10339883Sandreas@sandberg.pp.se Tick delay(0); 10349883Sandreas@sandberg.pp.se uint16_t port(kvm_run.io.port); 10359883Sandreas@sandberg.pp.se Addr pAddr; 10369883Sandreas@sandberg.pp.se const int count(kvm_run.io.count); 10379883Sandreas@sandberg.pp.se 10389883Sandreas@sandberg.pp.se assert(kvm_run.io.direction == KVM_EXIT_IO_IN || 10399883Sandreas@sandberg.pp.se kvm_run.io.direction == KVM_EXIT_IO_OUT); 10409883Sandreas@sandberg.pp.se 10419883Sandreas@sandberg.pp.se DPRINTF(KvmIO, "KVM-x86: Handling IO instruction (%s) (port: 0x%x)\n", 10429883Sandreas@sandberg.pp.se (isWrite ? "out" : "in"), kvm_run.io.port); 10439883Sandreas@sandberg.pp.se 10449883Sandreas@sandberg.pp.se /* Vanilla gem5 handles PCI discovery in the TLB(!). Since we 10459883Sandreas@sandberg.pp.se * don't use the TLB component, we need to intercept and handle 10469883Sandreas@sandberg.pp.se * the PCI configuration space IO ports here. 10479883Sandreas@sandberg.pp.se * 10489883Sandreas@sandberg.pp.se * The IO port PCI discovery mechanism uses one address register 10499883Sandreas@sandberg.pp.se * and one data register. We map the address register to a misc 10509883Sandreas@sandberg.pp.se * reg and use that to re-route data register accesses to the 10519883Sandreas@sandberg.pp.se * right location in the PCI configuration space. 10529883Sandreas@sandberg.pp.se */ 10539883Sandreas@sandberg.pp.se if (port == IO_PCI_CONF_ADDR) { 10549883Sandreas@sandberg.pp.se handleIOMiscReg32(MISCREG_PCI_CONFIG_ADDRESS); 10559883Sandreas@sandberg.pp.se return 0; 10569883Sandreas@sandberg.pp.se } else if ((port & ~0x3) == IO_PCI_CONF_DATA_BASE) { 10579883Sandreas@sandberg.pp.se Addr pciConfigAddr(tc->readMiscRegNoEffect(MISCREG_PCI_CONFIG_ADDRESS)); 10589883Sandreas@sandberg.pp.se if (pciConfigAddr & 0x80000000) { 10599883Sandreas@sandberg.pp.se pAddr = X86ISA::x86PciConfigAddress((pciConfigAddr & 0x7ffffffc) | 10609883Sandreas@sandberg.pp.se (port & 0x3)); 10619883Sandreas@sandberg.pp.se } else { 10629883Sandreas@sandberg.pp.se pAddr = X86ISA::x86IOAddress(port); 10639883Sandreas@sandberg.pp.se } 10649883Sandreas@sandberg.pp.se } else { 10659883Sandreas@sandberg.pp.se pAddr = X86ISA::x86IOAddress(port); 10669883Sandreas@sandberg.pp.se } 10679883Sandreas@sandberg.pp.se 10689883Sandreas@sandberg.pp.se io_req.setPhys(pAddr, kvm_run.io.size, Request::UNCACHEABLE, 10699883Sandreas@sandberg.pp.se dataMasterId()); 10709883Sandreas@sandberg.pp.se 10719883Sandreas@sandberg.pp.se const MemCmd cmd(isWrite ? MemCmd::WriteReq : MemCmd::ReadReq); 10729883Sandreas@sandberg.pp.se for (int i = 0; i < count; ++i) { 10739883Sandreas@sandberg.pp.se Packet pkt(&io_req, cmd); 10749883Sandreas@sandberg.pp.se 10759883Sandreas@sandberg.pp.se pkt.dataStatic(guestData); 10769883Sandreas@sandberg.pp.se delay += dataPort.sendAtomic(&pkt); 10779883Sandreas@sandberg.pp.se 10789883Sandreas@sandberg.pp.se guestData += kvm_run.io.size; 10799883Sandreas@sandberg.pp.se } 10809883Sandreas@sandberg.pp.se 10819883Sandreas@sandberg.pp.se return delay; 10829883Sandreas@sandberg.pp.se} 10839883Sandreas@sandberg.pp.se 10849883Sandreas@sandberg.pp.seTick 10859883Sandreas@sandberg.pp.seX86KvmCPU::handleKvmExitIRQWindowOpen() 10869883Sandreas@sandberg.pp.se{ 10879883Sandreas@sandberg.pp.se // We don't need to do anything here since this is caught the next 10889883Sandreas@sandberg.pp.se // time we execute kvmRun(). We still overload the exit event to 10899883Sandreas@sandberg.pp.se // silence the warning about an unhandled exit event. 10909883Sandreas@sandberg.pp.se return 0; 10919883Sandreas@sandberg.pp.se} 10929883Sandreas@sandberg.pp.se 10939883Sandreas@sandberg.pp.sebool 10949883Sandreas@sandberg.pp.seX86KvmCPU::archIsDrained() const 10959883Sandreas@sandberg.pp.se{ 10969883Sandreas@sandberg.pp.se struct kvm_vcpu_events events; 10979883Sandreas@sandberg.pp.se 10989883Sandreas@sandberg.pp.se getVCpuEvents(events); 10999883Sandreas@sandberg.pp.se 11009883Sandreas@sandberg.pp.se // We could probably handle this in a by re-inserting interrupts 11019883Sandreas@sandberg.pp.se // that are pending into gem5 on a drain. However, that would 11029883Sandreas@sandberg.pp.se // probably be tricky to do reliably, so we'll just prevent a 11039883Sandreas@sandberg.pp.se // drain if there is anything pending in the 11049883Sandreas@sandberg.pp.se // guest. X86KvmCPU::kvmRunDrain() minimizes the amount of code 11059883Sandreas@sandberg.pp.se // executed in the guest by requesting an interrupt window if 11069883Sandreas@sandberg.pp.se // there are pending interrupts. 11079883Sandreas@sandberg.pp.se const bool pending_events(events.exception.injected || 11089883Sandreas@sandberg.pp.se events.interrupt.injected || 11099883Sandreas@sandberg.pp.se events.nmi.injected || events.nmi.pending); 11109883Sandreas@sandberg.pp.se 11119883Sandreas@sandberg.pp.se if (pending_events) { 11129883Sandreas@sandberg.pp.se DPRINTF(Drain, "archIsDrained: Pending events: %s %s %s %s\n", 11139883Sandreas@sandberg.pp.se events.exception.injected ? "exception" : "", 11149883Sandreas@sandberg.pp.se events.interrupt.injected ? "interrupt" : "", 11159883Sandreas@sandberg.pp.se events.nmi.injected ? "nmi[i]" : "", 11169883Sandreas@sandberg.pp.se events.nmi.pending ? "nmi[p]" : ""); 11179883Sandreas@sandberg.pp.se } 11189883Sandreas@sandberg.pp.se 11199883Sandreas@sandberg.pp.se return !pending_events; 11209883Sandreas@sandberg.pp.se} 11219883Sandreas@sandberg.pp.se 11229883Sandreas@sandberg.pp.sestatic struct kvm_cpuid_entry2 11239883Sandreas@sandberg.pp.semakeKvmCpuid(uint32_t function, uint32_t index, 11249883Sandreas@sandberg.pp.se CpuidResult &result) 11259883Sandreas@sandberg.pp.se{ 11269883Sandreas@sandberg.pp.se struct kvm_cpuid_entry2 e; 11279883Sandreas@sandberg.pp.se e.function = function; 11289883Sandreas@sandberg.pp.se e.index = index; 11299883Sandreas@sandberg.pp.se e.flags = 0; 11309883Sandreas@sandberg.pp.se e.eax = (uint32_t)result.rax; 11319883Sandreas@sandberg.pp.se e.ebx = (uint32_t)result.rbx; 11329883Sandreas@sandberg.pp.se e.ecx = (uint32_t)result.rcx; 11339883Sandreas@sandberg.pp.se e.edx = (uint32_t)result.rdx; 11349883Sandreas@sandberg.pp.se 11359883Sandreas@sandberg.pp.se return e; 11369883Sandreas@sandberg.pp.se} 11379883Sandreas@sandberg.pp.se 11389883Sandreas@sandberg.pp.sevoid 11399883Sandreas@sandberg.pp.seX86KvmCPU::updateCPUID() 11409883Sandreas@sandberg.pp.se{ 11419883Sandreas@sandberg.pp.se Kvm::CPUIDVector m5_supported; 11429883Sandreas@sandberg.pp.se 11439883Sandreas@sandberg.pp.se /* TODO: We currently don't support any of the functions that 11449883Sandreas@sandberg.pp.se * iterate through data structures in the CPU using an index. It's 11459883Sandreas@sandberg.pp.se * currently not a problem since M5 doesn't expose any of them at 11469883Sandreas@sandberg.pp.se * the moment. 11479883Sandreas@sandberg.pp.se */ 11489883Sandreas@sandberg.pp.se 11499883Sandreas@sandberg.pp.se /* Basic features */ 11509883Sandreas@sandberg.pp.se CpuidResult func0; 11519883Sandreas@sandberg.pp.se X86ISA::doCpuid(tc, 0x0, 0, func0); 11529883Sandreas@sandberg.pp.se for (uint32_t function = 0; function <= func0.rax; ++function) { 11539883Sandreas@sandberg.pp.se CpuidResult cpuid; 11549883Sandreas@sandberg.pp.se uint32_t idx(0); 11559883Sandreas@sandberg.pp.se 11569883Sandreas@sandberg.pp.se X86ISA::doCpuid(tc, function, idx, cpuid); 11579883Sandreas@sandberg.pp.se m5_supported.push_back(makeKvmCpuid(function, idx, cpuid)); 11589883Sandreas@sandberg.pp.se } 11599883Sandreas@sandberg.pp.se 11609883Sandreas@sandberg.pp.se /* Extended features */ 11619883Sandreas@sandberg.pp.se CpuidResult efunc0; 11629883Sandreas@sandberg.pp.se X86ISA::doCpuid(tc, 0x80000000, 0, efunc0); 11639883Sandreas@sandberg.pp.se for (uint32_t function = 0x80000000; function <= efunc0.rax; ++function) { 11649883Sandreas@sandberg.pp.se CpuidResult cpuid; 11659883Sandreas@sandberg.pp.se uint32_t idx(0); 11669883Sandreas@sandberg.pp.se 11679883Sandreas@sandberg.pp.se X86ISA::doCpuid(tc, function, idx, cpuid); 11689883Sandreas@sandberg.pp.se m5_supported.push_back(makeKvmCpuid(function, idx, cpuid)); 11699883Sandreas@sandberg.pp.se } 11709883Sandreas@sandberg.pp.se 11719883Sandreas@sandberg.pp.se setCPUID(m5_supported); 11729883Sandreas@sandberg.pp.se} 11739883Sandreas@sandberg.pp.se 11749883Sandreas@sandberg.pp.sevoid 11759883Sandreas@sandberg.pp.seX86KvmCPU::setCPUID(const struct kvm_cpuid2 &cpuid) 11769883Sandreas@sandberg.pp.se{ 11779883Sandreas@sandberg.pp.se if (ioctl(KVM_SET_CPUID2, (void *)&cpuid) == -1) 11789883Sandreas@sandberg.pp.se panic("KVM: Failed to set guest CPUID2 (errno: %i)\n", 11799883Sandreas@sandberg.pp.se errno); 11809883Sandreas@sandberg.pp.se} 11819883Sandreas@sandberg.pp.se 11829883Sandreas@sandberg.pp.sevoid 11839883Sandreas@sandberg.pp.seX86KvmCPU::setCPUID(const Kvm::CPUIDVector &cpuid) 11849883Sandreas@sandberg.pp.se{ 11859883Sandreas@sandberg.pp.se std::unique_ptr<struct kvm_cpuid2> kvm_cpuid( 11869883Sandreas@sandberg.pp.se newVarStruct<struct kvm_cpuid2, struct kvm_cpuid_entry2>(cpuid.size())); 11879883Sandreas@sandberg.pp.se 11889883Sandreas@sandberg.pp.se kvm_cpuid->nent = cpuid.size(); 11899883Sandreas@sandberg.pp.se std::copy(cpuid.begin(), cpuid.end(), kvm_cpuid->entries); 11909883Sandreas@sandberg.pp.se 11919883Sandreas@sandberg.pp.se setCPUID(*kvm_cpuid); 11929883Sandreas@sandberg.pp.se} 11939883Sandreas@sandberg.pp.se 11949883Sandreas@sandberg.pp.sevoid 11959883Sandreas@sandberg.pp.seX86KvmCPU::setMSRs(const struct kvm_msrs &msrs) 11969883Sandreas@sandberg.pp.se{ 11979883Sandreas@sandberg.pp.se if (ioctl(KVM_SET_MSRS, (void *)&msrs) == -1) 11989883Sandreas@sandberg.pp.se panic("KVM: Failed to set guest MSRs (errno: %i)\n", 11999883Sandreas@sandberg.pp.se errno); 12009883Sandreas@sandberg.pp.se} 12019883Sandreas@sandberg.pp.se 12029883Sandreas@sandberg.pp.sevoid 12039883Sandreas@sandberg.pp.seX86KvmCPU::setMSRs(const KvmMSRVector &msrs) 12049883Sandreas@sandberg.pp.se{ 12059883Sandreas@sandberg.pp.se std::unique_ptr<struct kvm_msrs> kvm_msrs( 12069883Sandreas@sandberg.pp.se newVarStruct<struct kvm_msrs, struct kvm_msr_entry>(msrs.size())); 12079883Sandreas@sandberg.pp.se 12089883Sandreas@sandberg.pp.se kvm_msrs->nmsrs = msrs.size(); 12099883Sandreas@sandberg.pp.se std::copy(msrs.begin(), msrs.end(), kvm_msrs->entries); 12109883Sandreas@sandberg.pp.se 12119883Sandreas@sandberg.pp.se setMSRs(*kvm_msrs); 12129883Sandreas@sandberg.pp.se} 12139883Sandreas@sandberg.pp.se 12149883Sandreas@sandberg.pp.sevoid 12159883Sandreas@sandberg.pp.seX86KvmCPU::getMSRs(struct kvm_msrs &msrs) const 12169883Sandreas@sandberg.pp.se{ 12179883Sandreas@sandberg.pp.se if (ioctl(KVM_GET_MSRS, (void *)&msrs) == -1) 12189883Sandreas@sandberg.pp.se panic("KVM: Failed to get guest MSRs (errno: %i)\n", 12199883Sandreas@sandberg.pp.se errno); 12209883Sandreas@sandberg.pp.se} 12219883Sandreas@sandberg.pp.se 12229883Sandreas@sandberg.pp.se 12239883Sandreas@sandberg.pp.sevoid 12249883Sandreas@sandberg.pp.seX86KvmCPU::setMSR(uint32_t index, uint64_t value) 12259883Sandreas@sandberg.pp.se{ 12269883Sandreas@sandberg.pp.se std::unique_ptr<struct kvm_msrs> kvm_msrs( 12279883Sandreas@sandberg.pp.se newVarStruct<struct kvm_msrs, struct kvm_msr_entry>(1)); 12289883Sandreas@sandberg.pp.se struct kvm_msr_entry &entry(kvm_msrs->entries[0]); 12299883Sandreas@sandberg.pp.se 12309883Sandreas@sandberg.pp.se kvm_msrs->nmsrs = 1; 12319883Sandreas@sandberg.pp.se entry.index = index; 12329883Sandreas@sandberg.pp.se entry.reserved = 0; 12339883Sandreas@sandberg.pp.se entry.data = value; 12349883Sandreas@sandberg.pp.se 12359883Sandreas@sandberg.pp.se setMSRs(*kvm_msrs.get()); 12369883Sandreas@sandberg.pp.se} 12379883Sandreas@sandberg.pp.se 12389883Sandreas@sandberg.pp.seuint64_t 12399883Sandreas@sandberg.pp.seX86KvmCPU::getMSR(uint32_t index) const 12409883Sandreas@sandberg.pp.se{ 12419883Sandreas@sandberg.pp.se std::unique_ptr<struct kvm_msrs> kvm_msrs( 12429883Sandreas@sandberg.pp.se newVarStruct<struct kvm_msrs, struct kvm_msr_entry>(1)); 12439883Sandreas@sandberg.pp.se struct kvm_msr_entry &entry(kvm_msrs->entries[0]); 12449883Sandreas@sandberg.pp.se 12459883Sandreas@sandberg.pp.se kvm_msrs->nmsrs = 1; 12469883Sandreas@sandberg.pp.se entry.index = index; 12479883Sandreas@sandberg.pp.se entry.reserved = 0; 12489883Sandreas@sandberg.pp.se entry.data = 0; 12499883Sandreas@sandberg.pp.se 12509883Sandreas@sandberg.pp.se getMSRs(*kvm_msrs.get()); 12519883Sandreas@sandberg.pp.se return entry.data; 12529883Sandreas@sandberg.pp.se} 12539883Sandreas@sandberg.pp.se 12549883Sandreas@sandberg.pp.seconst Kvm::MSRIndexVector & 12559883Sandreas@sandberg.pp.seX86KvmCPU::getMsrIntersection() const 12569883Sandreas@sandberg.pp.se{ 12579883Sandreas@sandberg.pp.se if (cachedMsrIntersection.empty()) { 12589883Sandreas@sandberg.pp.se const Kvm::MSRIndexVector &kvm_msrs(vm.kvm.getSupportedMSRs()); 12599883Sandreas@sandberg.pp.se 12609883Sandreas@sandberg.pp.se DPRINTF(Kvm, "kvm-x86: Updating MSR intersection\n"); 12619883Sandreas@sandberg.pp.se for (auto it = kvm_msrs.cbegin(); it != kvm_msrs.cend(); ++it) { 12629883Sandreas@sandberg.pp.se if (X86ISA::msrMap.find(*it) != X86ISA::msrMap.end()) { 12639883Sandreas@sandberg.pp.se cachedMsrIntersection.push_back(*it); 12649883Sandreas@sandberg.pp.se DPRINTF(Kvm, "kvm-x86: Adding MSR 0x%x\n", *it); 12659883Sandreas@sandberg.pp.se } else { 12669883Sandreas@sandberg.pp.se warn("kvm-x86: MSR (0x%x) unsupported by gem5. Skipping.\n", 12679883Sandreas@sandberg.pp.se *it); 12689883Sandreas@sandberg.pp.se } 12699883Sandreas@sandberg.pp.se } 12709883Sandreas@sandberg.pp.se } 12719883Sandreas@sandberg.pp.se 12729883Sandreas@sandberg.pp.se return cachedMsrIntersection; 12739883Sandreas@sandberg.pp.se} 12749883Sandreas@sandberg.pp.se 12759883Sandreas@sandberg.pp.sevoid 12769883Sandreas@sandberg.pp.seX86KvmCPU::getDebugRegisters(struct kvm_debugregs ®s) const 12779883Sandreas@sandberg.pp.se{ 12789883Sandreas@sandberg.pp.se#ifdef KVM_GET_DEBUGREGS 12799883Sandreas@sandberg.pp.se if (ioctl(KVM_GET_DEBUGREGS, ®s) == -1) 12809883Sandreas@sandberg.pp.se panic("KVM: Failed to get guest debug registers\n"); 12819883Sandreas@sandberg.pp.se#else 12829883Sandreas@sandberg.pp.se panic("KVM: Unsupported getDebugRegisters call.\n"); 12839883Sandreas@sandberg.pp.se#endif 12849883Sandreas@sandberg.pp.se} 12859883Sandreas@sandberg.pp.se 12869883Sandreas@sandberg.pp.sevoid 12879883Sandreas@sandberg.pp.seX86KvmCPU::setDebugRegisters(const struct kvm_debugregs ®s) 12889883Sandreas@sandberg.pp.se{ 12899883Sandreas@sandberg.pp.se#ifdef KVM_SET_DEBUGREGS 12909883Sandreas@sandberg.pp.se if (ioctl(KVM_SET_DEBUGREGS, (void *)®s) == -1) 12919883Sandreas@sandberg.pp.se panic("KVM: Failed to set guest debug registers\n"); 12929883Sandreas@sandberg.pp.se#else 12939883Sandreas@sandberg.pp.se panic("KVM: Unsupported setDebugRegisters call.\n"); 12949883Sandreas@sandberg.pp.se#endif 12959883Sandreas@sandberg.pp.se} 12969883Sandreas@sandberg.pp.se 12979883Sandreas@sandberg.pp.sevoid 12989883Sandreas@sandberg.pp.seX86KvmCPU::getXCRs(struct kvm_xcrs ®s) const 12999883Sandreas@sandberg.pp.se{ 13009883Sandreas@sandberg.pp.se if (ioctl(KVM_GET_XCRS, ®s) == -1) 13019883Sandreas@sandberg.pp.se panic("KVM: Failed to get guest debug registers\n"); 13029883Sandreas@sandberg.pp.se} 13039883Sandreas@sandberg.pp.se 13049883Sandreas@sandberg.pp.sevoid 13059883Sandreas@sandberg.pp.seX86KvmCPU::setXCRs(const struct kvm_xcrs ®s) 13069883Sandreas@sandberg.pp.se{ 13079883Sandreas@sandberg.pp.se if (ioctl(KVM_SET_XCRS, (void *)®s) == -1) 13089883Sandreas@sandberg.pp.se panic("KVM: Failed to set guest debug registers\n"); 13099883Sandreas@sandberg.pp.se} 13109883Sandreas@sandberg.pp.se 13119883Sandreas@sandberg.pp.sevoid 13129883Sandreas@sandberg.pp.seX86KvmCPU::getXSave(struct kvm_xsave &xsave) const 13139883Sandreas@sandberg.pp.se{ 13149883Sandreas@sandberg.pp.se if (ioctl(KVM_GET_XSAVE, &xsave) == -1) 13159883Sandreas@sandberg.pp.se panic("KVM: Failed to get guest debug registers\n"); 13169883Sandreas@sandberg.pp.se} 13179883Sandreas@sandberg.pp.se 13189883Sandreas@sandberg.pp.sevoid 13199883Sandreas@sandberg.pp.seX86KvmCPU::setXSave(const struct kvm_xsave &xsave) 13209883Sandreas@sandberg.pp.se{ 13219883Sandreas@sandberg.pp.se if (ioctl(KVM_SET_XSAVE, (void *)&xsave) == -1) 13229883Sandreas@sandberg.pp.se panic("KVM: Failed to set guest debug registers\n"); 13239883Sandreas@sandberg.pp.se} 13249883Sandreas@sandberg.pp.se 13259883Sandreas@sandberg.pp.se 13269883Sandreas@sandberg.pp.sevoid 13279883Sandreas@sandberg.pp.seX86KvmCPU::getVCpuEvents(struct kvm_vcpu_events &events) const 13289883Sandreas@sandberg.pp.se{ 13299883Sandreas@sandberg.pp.se if (ioctl(KVM_GET_VCPU_EVENTS, &events) == -1) 13309883Sandreas@sandberg.pp.se panic("KVM: Failed to get guest debug registers\n"); 13319883Sandreas@sandberg.pp.se} 13329883Sandreas@sandberg.pp.se 13339883Sandreas@sandberg.pp.sevoid 13349883Sandreas@sandberg.pp.seX86KvmCPU::setVCpuEvents(const struct kvm_vcpu_events &events) 13359883Sandreas@sandberg.pp.se{ 13369883Sandreas@sandberg.pp.se if (ioctl(KVM_SET_VCPU_EVENTS, (void *)&events) == -1) 13379883Sandreas@sandberg.pp.se panic("KVM: Failed to set guest debug registers\n"); 13389883Sandreas@sandberg.pp.se} 13399883Sandreas@sandberg.pp.se 13409883Sandreas@sandberg.pp.seX86KvmCPU * 13419883Sandreas@sandberg.pp.seX86KvmCPUParams::create() 13429883Sandreas@sandberg.pp.se{ 13439883Sandreas@sandberg.pp.se return new X86KvmCPU(this); 13449883Sandreas@sandberg.pp.se} 1345