From: Avi Kivity <avi@qumranet.com>
Date: Sun, 23 Mar 2008 10:18:19 +0000 (+0200)
Subject: KVM: MMU: Fix is_rmap_pte() with io ptes
X-Git-Tag: MMI-PSA29.97-13-9~35862^2~3
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=4b1a80fa65aa9e2ec5696998856136c886385538;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git

KVM: MMU: Fix is_rmap_pte() with io ptes

is_rmap_pte() doesn't take into account io ptes, which have the avail bit set.

Signed-off-by: Avi Kivity <avi@qumranet.com>
---

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index d8172aabc660..e49c4d433c0f 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -222,8 +222,7 @@ static int is_io_pte(unsigned long pte)
 
 static int is_rmap_pte(u64 pte)
 {
-	return pte != shadow_trap_nonpresent_pte
-		&& pte != shadow_notrap_nonpresent_pte;
+	return is_shadow_present_pte(pte);
 }
 
 static gfn_t pse36_gfn_delta(u32 gpte)