lkml.org 
[lkml]   [2017]   [Jul]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[RFC Part2 PATCH v3 24/26] KVM: SVM: Clear C-bit from the page fault address
Date
When SEV is active, on #NPF the page fault address will contain C-bit.
We must clear the C-bit before handling the fault.

Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
---
arch/x86/kvm/svm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 0bbd050..64b9f60 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -2321,7 +2321,7 @@ static void svm_set_dr7(struct kvm_vcpu *vcpu, unsigned long value)

static int pf_interception(struct vcpu_svm *svm)
{
- u64 fault_address = svm->vmcb->control.exit_info_2;
+ u64 fault_address = __sme_clr(svm->vmcb->control.exit_info_2);
u64 error_code = svm->vmcb->control.exit_info_1;

return kvm_handle_page_fault(&svm->vcpu, error_code, fault_address,
--
2.9.4
\
 
 \ /
  Last update: 2017-07-24 22:12    [W:0.177 / U:0.128 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site