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, arnd@arndb.de, Neeraj.Upadhyay@amd.com,
kvijayab@amd.com
Cc: Tianyu Lan <tiala@microsoft.com>,
linux-arch@vger.kernel.org, linux-hyperv@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [RFC PATCH V3 1/4] x86/Hyper-V: Not use hv apic driver when Secure AVIC is available
Date: Wed, 23 Jul 2025 15:03:05 -0400 [thread overview]
Message-ID: <20250723190308.5945-2-ltykernel@gmail.com> (raw)
In-Reply-To: <20250723190308.5945-1-ltykernel@gmail.com>
From: Tianyu Lan <tiala@microsoft.com>
When Secure AVIC is available, AMD x2apic Secure
AVIC driver should be selected and return directly
in the hv_apic_init().
Signed-off-by: Tianyu Lan <tiala@microsoft.com>
---
arch/x86/hyperv/hv_apic.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/x86/hyperv/hv_apic.c b/arch/x86/hyperv/hv_apic.c
index bfde0a3498b9..1c48396e5389 100644
--- a/arch/x86/hyperv/hv_apic.c
+++ b/arch/x86/hyperv/hv_apic.c
@@ -293,6 +293,9 @@ static void hv_send_ipi_self(int vector)
void __init hv_apic_init(void)
{
+ if (cc_platform_has(CC_ATTR_SNP_SECURE_AVIC))
+ return;
+
if (ms_hyperv.hints & HV_X64_CLUSTER_IPI_RECOMMENDED) {
pr_info("Hyper-V: Using IPI hypercalls\n");
/*
--
2.25.1
next prev parent reply other threads:[~2025-07-23 19:03 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-23 19:03 [RFC PATCH V3 0/4] x86/Hyper-V: Add AMD Secure AVIC for Hyper-V platform Tianyu Lan
2025-07-23 19:03 ` Tianyu Lan [this message]
2025-07-24 23:33 ` [RFC PATCH V3 1/4] x86/Hyper-V: Not use hv apic driver when Secure AVIC is available Michael Kelley
2025-07-25 20:00 ` Tianyu Lan
2025-07-23 19:03 ` [RFC PATCH V3 2/4] Drivers: hv: Allow vmbus message synic interrupt injected from Hyper-V Tianyu Lan
2025-07-24 23:34 ` Michael Kelley
2025-07-25 20:06 ` Tianyu Lan
2025-07-23 19:03 ` [RFC PATCH V3 3/4] x86/Hyper-V: Don't use auto-eoi when Secure AVIC is available Tianyu Lan
2025-07-24 23:34 ` Michael Kelley
2025-07-25 19:58 ` Tianyu Lan
2025-07-23 19:03 ` [RFC PATCH V3 4/4] x86/hyperv: Allow Hyper-V to inject STIMER0 interrupts Tianyu Lan
2025-07-24 23:35 ` Michael Kelley
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