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| author | Tianyu Lan <ltykernel@gmail.com> | 2025-09-18 18:00:22 +0300 |
|---|---|---|
| committer | Wei Liu <wei.liu@kernel.org> | 2025-11-15 09:18:14 +0300 |
| commit | 5e52db91d112bd1da00b520e21f570db14105bde (patch) | |
| tree | 39ee6a77d8e192e4e8fa539cb04a1121e88e916f | |
| parent | c52c957e41e75d3f74157acffc53cefa3089ffa7 (diff) | |
| download | linux-5e52db91d112bd1da00b520e21f570db14105bde.tar.xz | |
x86/hyperv: Allow Hyper-V to inject STIMER0 interrupts
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>
| -rw-r--r-- | arch/x86/hyperv/hv_init.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/x86/hyperv/hv_init.c b/arch/x86/hyperv/hv_init.c index e890fd37e9c2..21ed8963fafd 100644 --- a/arch/x86/hyperv/hv_init.c +++ b/arch/x86/hyperv/hv_init.c @@ -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]) { |