https://github.com/torvalds/linux
Revision 452d62227958e149e5c7b0084a559c0957c3ff2a authored by Marc Zyngier on 13 July 2020, 14:15:14 UTC, committed by Marc Zyngier on 01 October 2020, 08:53:45 UTC
Commit a0e50aa3f4a8 ("KVM: arm64: Factor out stage 2 page table
data from struct kvm") dropped the ISB after __load_guest_stage2(),
only leaving the one that is required when the speculative AT
workaround is in effect.

As Andrew points it: "This alternative is 'backwards' to avoid a
double ISB as there is one in __load_guest_stage2 when the workaround
is active."

Restore the missing ISB, conditionned on the AT workaround not being
active.

Fixes: a0e50aa3f4a8 ("KVM: arm64: Factor out stage 2 page table data from struct kvm")
Reported-by: Andrew Scull <ascull@google.com>
Reported-by: Thomas Tai <thomas.tai@oracle.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
1 parent 620cf45
History
Tip revision: 452d62227958e149e5c7b0084a559c0957c3ff2a authored by Marc Zyngier on 13 July 2020, 14:15:14 UTC
KVM: arm64: Restore missing ISB on nVHE __tlb_switch_to_guest
Tip revision: 452d622
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.clang-format -rw-r--r-- 15.8 KB
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