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[RFC,18/19] kvm: x86: Set the new spte flags before entering the guest

Message ID 20170616134348.17725-19-alazar@bitdefender.com (mailing list archive)
State New, archived
Headers show

Commit Message

Adalbert Lazăr June 16, 2017, 1:43 p.m. UTC 
From: Mihai Dontu <mdontu@bitdefender.com>

Apply the changes made to the shadow page tables by the guest
introspection tool. These changes involve only the page permissions
bits.

Signed-off-by: Mihai Dontu <mdontu@bitdefender.com>
---
 arch/x86/kvm/x86.c | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index cafe878ba148..30f4d301453c 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -6793,6 +6793,8 @@  static int vcpu_enter_guest(struct kvm_vcpu *vcpu)
 
 	bool req_immediate_exit = false;
 
+	kvmi_flush_mem_access(vcpu);
+
 	if (vcpu->requests) {
 		if (kvm_check_request(KVM_REQ_MMU_RELOAD, vcpu))
 			kvm_mmu_unload(vcpu);