diff mbox series

[kernel,7/9] KVM: SEV-ES: Eliminate #DB intercept when DebugSwap enabled

Message ID 20230615063757.3039121-8-aik@amd.com (mailing list archive)
State New, archived
Headers show
Series KVM: SEV: Enable AMD SEV-ES DebugSwap | expand

Commit Message

Alexey Kardashevskiy June 15, 2023, 6:37 a.m. UTC 
Disable #DB for SEV-ES guests when DebugSwap is enabled. There is no point
in such intercept as KVM does not allow guest debug for SEV-ES guests.

Signed-off-by: Alexey Kardashevskiy <aik@amd.com>
---
Changes:
v6:
* new to the series
---
 arch/x86/kvm/svm/sev.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
index abc502ce7871..9c43cbdab022 100644
--- a/arch/x86/kvm/svm/sev.c
+++ b/arch/x86/kvm/svm/sev.c
@@ -3000,6 +3000,8 @@  static void sev_es_init_vmcb(struct vcpu_svm *svm)
 		vmcb_set_intercept(&vmcb->control, INTERCEPT_DR7_READ);
 		vmcb_set_intercept(&vmcb->control, INTERCEPT_DR7_WRITE);
 		recalc_intercepts(svm);
+	} else {
+		clr_exception_intercept(svm, DB_VECTOR);
 	}
 
 	/* Can't intercept XSETBV, HV can't modify XCR0 directly */