github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-06-04 04:23:35 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

KVM: SVM: Drop explicit check on MSRPM offset when emulating SEV-ES accesses

Browse Source 
Now that msr_write_intercepted() defaults to true, i.e. accurately reflects
hardware behavior for out-of-range MSRs, and doesn't WARN (or BUG) on an
out-of-range MSR, drop sev_es_prevent_msr_access()'s svm_msrpm_offset()
check that guarded against calling msr_write_intercepted() with a "bad"
index.

Opportunistically clean up the helper's formatting.

Link: https://lore.kernel.org/r/20250610225737.156318-25-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
Sean Christopherson 2025-06-10 15:57:29 -07:00
parent 4880919aaf
commit 2f89888434
1 changed files with 2 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
arch/x86/kvm/svm/svm.c
View File

@ -2754,12 +2754,11 @@ static int svm_get_feature_msr(u32 msr, u64 *data)
return 0;
}
static bool
sev_es_prevent_msr_access(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
static bool sev_es_prevent_msr_access(struct kvm_vcpu *vcpu,
struct msr_data *msr_info)
{
return sev_es_guest(vcpu->kvm) &&
vcpu->arch.guest_state_protected &&
svm_msrpm_offset(msr_info->index) != MSR_INVALID &&
!msr_write_intercepted(vcpu, msr_info->index);
}