From 20d65236d01cdbe14a88f0e2c0f985669f8c41fc Mon Sep 17 00:00:00 2001 From: Junaid Shahid Date: Wed, 21 Dec 2016 20:29:31 -0800 Subject: [PATCH] kvm: x86: mmu: Update comment in mark_spte_for_access_track Reword the comment to hopefully make it more clear. Signed-off-by: Junaid Shahid Signed-off-by: Paolo Bonzini --- arch/x86/kvm/mmu.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index e3312e2..e13041a 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -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), -- 2.7.4