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x86/hyperv: Allow Hyper-V to inject STIMER0 interrupts

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When Secure AVIC is enabled, call Secure AVIC
function to allow Hyper-V to inject STIMER0 interrupt.

Reviewed-by: Neeraj Upadhyay <Neeraj.Upadhyay@amd.com>
Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Signed-off-by: Tianyu Lan <tiala@microsoft.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
This commit is contained in:
Tianyu Lan 2025-09-18 11:00:22 -04:00 committed by Wei Liu
parent c52c957e41
commit 5e52db91d1
1 changed files with 7 additions and 0 deletions
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7
arch/x86/hyperv/hv_init.c
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@ -170,6 +170,10 @@ static int hv_cpu_init(unsigned int cpu)
wrmsrq(HV_X64_MSR_VP_ASSIST_PAGE, msr.as_uint64);
}
/* Allow Hyper-V stimer vector to be injected from Hypervisor. */
if (ms_hyperv.misc_features & HV_STIMER_DIRECT_MODE_AVAILABLE)
apic_update_vector(cpu, HYPERV_STIMER0_VECTOR, true);
return hyperv_init_ghcb();
}
@ -277,6 +281,9 @@ static int hv_cpu_die(unsigned int cpu)
*ghcb_va = NULL;
}
if (ms_hyperv.misc_features & HV_STIMER_DIRECT_MODE_AVAILABLE)
apic_update_vector(cpu, HYPERV_STIMER0_VECTOR, false);
hv_common_cpu_die(cpu);
if (hv_vp_assist_page && hv_vp_assist_page[cpu]) {