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kvm: x86: mmu: Update comment in mark_spte_for_access_track

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Reword the comment to hopefully make it more clear.

Signed-off-by: Junaid Shahid <junaids@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Junaid Shahid 2016-12-21 20:29:31 -08:00 committed by Paolo Bonzini
parent 312b616b30
commit 20d65236d0
1 changed files with 3 additions and 3 deletions
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6
arch/x86/kvm/mmu.c
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@ -708,9 +708,9 @@ static u64 mark_spte_for_access_track(u64 spte)
return spte;
/*
* Verify that the write-protection that we do below will be fixable
* via the fast page fault path. Currently, that is always the case, at
* least when using EPT (which is when access tracking would be used).
* Making an Access Tracking PTE will result in removal of write access
* from the PTE. So, verify that we will be able to restore the write
* access in the fast page fault path later on.
*/
WARN_ONCE((spte & PT_WRITABLE_MASK) &&
!spte_can_locklessly_be_made_writable(spte),