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author | Andrew Bardsley <Andrew.Bardsley@arm.com> | 2014-12-02 06:08:11 -0500 |
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committer | Andrew Bardsley <Andrew.Bardsley@arm.com> | 2014-12-02 06:08:11 -0500 |
commit | 3cd0b1f6a6873ef06351dd49f3c7697175303371 (patch) | |
tree | fa84721b7b1c715fb078e3ad99e3f1ca1c73a912 /src/cpu/minor/lsq.cc | |
parent | e5e5b80690f736c65c9b51ef96660637210f3938 (diff) | |
download | gem5-3cd0b1f6a6873ef06351dd49f3c7697175303371.tar.xz |
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.
Diffstat (limited to 'src/cpu/minor/lsq.cc')
0 files changed, 0 insertions, 0 deletions