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| /gem5/src/arch/arm/ | ||
| H A D | table_walker.cc | 10579:e622a3e2ed14 Tue Dec 02 06:08:00 EST 2014 Andrew Bardsley <Andrew.Bardsley@arm.com> arm: Fix TLB ignoring faults when table walking This patch fixes a case where the Minor CPU can deadlock due to the lack of a response to TLB request because of a bug in fault handling in the ARM table walker. TableWalker::processWalkWrapper is the scheduler-called wrapper which handles deferred walks which calls to TableWalker::wait cannot immediately process. The handling of faults generated by processWalk{AArch64,LPAE,} calls in those two functions is is different. processWalkWrapper ignores fault returns from processWalk... which can lead to ::finish not being called on a translation. This fix provides fault handling in processWalkWrapper similar to that found in the leaf functions which BaseTLB::Translation::finish. |
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