[PATCH 4/5] kvm: x86: mmu: Update comment in mark_spte_for_access_track

Junaid Shahid
2016-12-22T04:29:38Z

Reword the comment to hopefully make it more clear.

Signed-off-by: Junaid Shahid <junaids@google.com>
---
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 76cc911..49a7fe4 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -707,9 +707,9 @@ 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),
--
2.8.0.rc3.226.g39d4020