If the EPT violation was caused by an execute restriction imposed by the
introspection tool, gpa_available will point to the instruction pointer,
not the to the read/write location that has to be used to emulate the
current instruction.
This optimization should be disabled only when the VM is introspected,
not just because the introspection subsystem is present.
Signed-off-by: Adalbert Lazăr <alazar@xxxxxxxxxxxxxxx>
---
arch/x86/kvm/x86.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 965c4f0108eb..3975331230b9 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -5532,7 +5532,7 @@ static int emulator_read_write_onepage(unsigned long addr, void *val,
* operation using rep will only have the initial GPA from the NPF
* occurred.
*/
- if (vcpu->arch.gpa_available &&
+ if (vcpu->arch.gpa_available && !kvmi_is_present() &&
emulator_can_use_gpa(ctxt) &&
(addr & ~PAGE_MASK) == (vcpu->arch.gpa_val & ~PAGE_MASK)) {
gpa = vcpu->arch.gpa_val;
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