From: Tianyu Lan <ltykernel@gmail.com>
To: kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org,
decui@microsoft.com, tglx@linutronix.de, mingo@redhat.com,
bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org,
hpa@zytor.com, kvijayab@amd.com, Neeraj.Upadhyay@amd.com
Cc: Tianyu Lan <tiala@microsoft.com>,
linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [RFC Patch v2 4/4] x86/Hyper-V: Allow Hyper-V to inject Hyper-V vectors
Date: Fri, 13 Jun 2025 07:08:29 -0400 [thread overview]
Message-ID: <20250613110829.122371-5-ltykernel@gmail.com> (raw)
In-Reply-To: <20250613110829.122371-1-ltykernel@gmail.com>
From: Tianyu Lan <tiala@microsoft.com>
When Secure AVIC is enabled, call Secure AVIC
function to allow Hyper-V to inject STIMER0 interrupt.
Signed-off-by: Tianyu Lan <tiala@microsoft.com>
---
arch/x86/hyperv/hv_init.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/x86/hyperv/hv_init.c b/arch/x86/hyperv/hv_init.c
index 3d1d3547095a..3b99fffb9ffd 100644
--- a/arch/x86/hyperv/hv_init.c
+++ b/arch/x86/hyperv/hv_init.c
@@ -132,6 +132,10 @@ 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();
}
--
2.25.1
next prev parent reply other threads:[~2025-06-13 11:08 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-13 11:08 [RFC Patch v2 0/4] x86/Hyper-V: Add AMD Secure AVIC for Hyper-V platform Tianyu Lan
2025-06-13 11:08 ` [RFC Patch v2 1/4] x86/Hyper-V: Not use hv apic driver when Secure AVIC is available Tianyu Lan
2025-06-20 2:17 ` Michael Kelley
2025-06-13 11:08 ` [RFC Patch v2 2/4] drivers/hv: Allow vmbus message synic interrupt injected from Hyper-V Tianyu Lan
2025-06-20 2:17 ` Michael Kelley
2025-06-13 11:08 ` [RFC Patch v2 3/4] x86/Hyper-V: Not use auto-eoi when Secure AVIC is available Tianyu Lan
2025-06-20 2:17 ` Michael Kelley
2025-06-13 11:08 ` Tianyu Lan [this message]
2025-06-20 2:18 ` [RFC Patch v2 4/4] x86/Hyper-V: Allow Hyper-V to inject Hyper-V vectors Michael Kelley
2025-06-20 2:17 ` [RFC Patch v2 0/4] x86/Hyper-V: Add AMD Secure AVIC for Hyper-V platform Michael Kelley
2025-06-20 15:05 ` Tianyu Lan
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