With all the pieces in place now, enable Secure AVIC in Secure AVIC Control MSR. Any access to x2APIC MSRs are emulated by hypervisor before Secure AVIC is enabled in the Control MSR. Post Secure AVIC enablement, all x2APIC MSR accesses (whether accelerated by AVIC hardware or trapped as #VC exception) operate on guest APIC backing page. Signed-off-by: Neeraj Upadhyay <Neeraj.Upadhyay@xxxxxxx> --- arch/x86/kernel/apic/x2apic_savic.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/apic/x2apic_savic.c b/arch/x86/kernel/apic/x2apic_savic.c index 321b3678e26f..a3f0ddc6b5b6 100644 --- a/arch/x86/kernel/apic/x2apic_savic.c +++ b/arch/x86/kernel/apic/x2apic_savic.c @@ -406,7 +406,7 @@ static void x2apic_savic_setup(void) ret = sev_notify_savic_gpa(gpa); if (ret != ES_OK) snp_abort(); - savic_wr_control_msr(gpa | MSR_AMD64_SECURE_AVIC_ALLOWEDNMI); + savic_wr_control_msr(gpa | MSR_AMD64_SECURE_AVIC_EN | MSR_AMD64_SECURE_AVIC_ALLOWEDNMI); this_cpu_write(savic_setup_done, true); } -- 2.34.1
