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Tue, 06 May 2025 06:07:17 -0700 (PDT) From: Tianyu Lan 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, Neeraj.Upadhyay@amd.com, yuehaibing@huawei.com, kvijayab@amd.com, jacob.jun.pan@linux.intel.com, jpoimboe@kernel.org, tiala@microsoft.com Cc: linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [RFC PATCH 3/6] drivers/hv: Allow vmbus message synic interrupt injected from Hyper-V Date: Tue, 6 May 2025 09:07:08 -0400 Message-Id: <20250506130712.156583-4-ltykernel@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20250506130712.156583-1-ltykernel@gmail.com> References: <20250506130712.156583-1-ltykernel@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Tianyu Lan When Secure AVIC is enabled, Vmbus driver should call x2apic Secure AVIC interface to allow Hyper-V to inject Vmbus message interrupt. Signed-off-by: Tianyu Lan --- drivers/hv/hv.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c index 308c8f279df8..f77c1dc0e8d4 100644 --- a/drivers/hv/hv.c +++ b/drivers/hv/hv.c @@ -20,6 +20,11 @@ #include #include #include + +#if IS_ENABLED(CONFIG_AMD_SECURE_AVIC) +#include +#endif + #include #include "hyperv_vmbus.h" =20 @@ -311,6 +316,10 @@ void hv_synic_enable_regs(unsigned int cpu) enable_percpu_irq(vmbus_irq, 0); shared_sint.as_uint64 =3D hv_get_msr(HV_MSR_SINT0 + VMBUS_MESSAGE_SINT); =20 +#if IS_ENABLED(CONFIG_AMD_SECURE_AVIC) + x2apic_savic_update_vector(smp_processor_id(), vmbus_interrupt, true); +#endif +=09 shared_sint.vector =3D vmbus_interrupt; shared_sint.masked =3D false; shared_sint.auto_eoi =3D hv_recommend_using_aeoi(); --=20 2.25.1