Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-08 21:21:47 +00:00
Code Issues Packages Projects Releases Wiki Activity

KVM: SVM: handle errors in vmrun emulation path appropriatly

Browse Source 
If nested svm fails to load the msrpm the vmrun succeeds with the old
msrpm which is not correct. This patch changes the logic to roll back
to host mode in case the msrpm cannot be loaded.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Joerg Roedel 2009-08-07 11:49:43 +02:00 committed by Avi Kivity
parent ea8e064fe2
commit 1f8da47805
1 changed files with 13 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
arch/x86/kvm/svm.c
View File

@ -1874,6 +1874,7 @@ static int vmsave_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
static int vmrun_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
{
nsvm_printk("VMrun\n");
if (nested_svm_check_permissions(svm))
return 1;
@ -1884,7 +1885,18 @@ static int vmrun_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
return 1;
if (!nested_svm_vmrun_msrpm(svm))
return 1;
goto failed;
return 1;
failed:
svm->vmcb->control.exit_code = SVM_EXIT_ERR;
svm->vmcb->control.exit_code_hi = 0;
svm->vmcb->control.exit_info_1 = 0;
svm->vmcb->control.exit_info_2 = 0;
nested_svm_vmexit(svm);
return 1;
}