From patchwork Wed Feb 26 23:08:02 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nuno Das Neves X-Patchwork-Id: 868560 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by smtp.subspace.kernel.org (Postfix) with ESMTP id C661B25DAF8; Wed, 26 Feb 2025 23:09:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=13.77.154.182 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740611342; cv=none; b=Za/KHkGQOEhNhx4nPDuH+1qJ69Y6EiigrebNQj2LqHdhf9+IF2uU2QxSLMO36WvZCntJlXDLJJc08I8p2ogBOYfAQeSK1+BHVV9LWLjMvjXQ4EcBg+d4HdD6PJBuPaFwmqllu23qNNZHwM+Ppc6eq3sjyCUjRIRpAZfmd4D/HwY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740611342; c=relaxed/simple; bh=tHNf3o07yocQ/o/3naYbkpavNlBEbnRHWB84s/Ouaec=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=VIMXOj/M12AQQaj9EGzbpwRUeunT3cViznz1Qxg0dPzkU0FqNQluXLlsZqoKlAjjRZjcglegIzMVaHkHt6EoOQVluVO8vzOm0L/68rORAH3mri2YPZwDXfpZxjHnvUU0VuHnb+qA6wkSIwj44CZcYwRtym+Q7XYkWmvw/H4yGAc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.microsoft.com; spf=pass smtp.mailfrom=linux.microsoft.com; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b=jnIwE4+i; arc=none smtp.client-ip=13.77.154.182 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b="jnIwE4+i" Received: from linuxonhyperv3.guj3yctzbm1etfxqx2vob5hsef.xx.internal.cloudapp.net (linux.microsoft.com [13.77.154.182]) by linux.microsoft.com (Postfix) with ESMTPSA id 68385210EAD0; Wed, 26 Feb 2025 15:08:59 -0800 (PST) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 68385210EAD0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1740611339; bh=D8zKP2hcDp7gg5TGoAjEuRkXHEuh7Rq/cw2eQj8sL+c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jnIwE4+ikDrarKkipwcw+0csfp/M/FetsQIzxMPtogFCK1p1AF0Hm2zvT/3br57k6 A2XLT4j7ii/XpT6MGPkeXLJOkzp61rOGODm0R/hkkhAsRkOv6CuhTqij8ZFgj8R9fy /GpaJGzjiw4xEyM/CH+Ld7sJxdgPz6AlI4q8zPZg= From: Nuno Das Neves To: linux-hyperv@vger.kernel.org, x86@kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, linux-acpi@vger.kernel.org Cc: kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, mhklinux@outlook.com, decui@microsoft.com, catalin.marinas@arm.com, will@kernel.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, daniel.lezcano@linaro.org, joro@8bytes.org, robin.murphy@arm.com, arnd@arndb.de, jinankjain@linux.microsoft.com, muminulrussell@gmail.com, skinsburskii@linux.microsoft.com, mrathor@linux.microsoft.com, ssengar@linux.microsoft.com, apais@linux.microsoft.com, Tianyu.Lan@microsoft.com, stanislav.kinsburskiy@gmail.com, gregkh@linuxfoundation.org, vkuznets@redhat.com, prapal@linux.microsoft.com, muislam@microsoft.com, anrayabh@linux.microsoft.com, rafael@kernel.org, lenb@kernel.org, corbet@lwn.net Subject: [PATCH v5 08/10] x86: hyperv: Add mshv_handler irq handler and setup function Date: Wed, 26 Feb 2025 15:08:02 -0800 Message-Id: <1740611284-27506-9-git-send-email-nunodasneves@linux.microsoft.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1740611284-27506-1-git-send-email-nunodasneves@linux.microsoft.com> References: <1740611284-27506-1-git-send-email-nunodasneves@linux.microsoft.com> Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: This will handle SYNIC interrupts such as intercepts, doorbells, and scheduling messages intended for the mshv driver. Signed-off-by: Nuno Das Neves Reviewed-by: Wei Liu Reviewed-by: Tianyu Lan --- arch/x86/kernel/cpu/mshyperv.c | 9 +++++++++ drivers/hv/hv_common.c | 5 +++++ include/asm-generic/mshyperv.h | 1 + 3 files changed, 15 insertions(+) diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c index 0116d0e96ef9..616e9a5d77b4 100644 --- a/arch/x86/kernel/cpu/mshyperv.c +++ b/arch/x86/kernel/cpu/mshyperv.c @@ -107,6 +107,7 @@ void hv_set_msr(unsigned int reg, u64 value) } EXPORT_SYMBOL_GPL(hv_set_msr); +static void (*mshv_handler)(void); static void (*vmbus_handler)(void); static void (*hv_stimer0_handler)(void); static void (*hv_kexec_handler)(void); @@ -117,6 +118,9 @@ DEFINE_IDTENTRY_SYSVEC(sysvec_hyperv_callback) struct pt_regs *old_regs = set_irq_regs(regs); inc_irq_stat(irq_hv_callback_count); + if (mshv_handler) + mshv_handler(); + if (vmbus_handler) vmbus_handler(); @@ -126,6 +130,11 @@ DEFINE_IDTENTRY_SYSVEC(sysvec_hyperv_callback) set_irq_regs(old_regs); } +void hv_setup_mshv_handler(void (*handler)(void)) +{ + mshv_handler = handler; +} + void hv_setup_vmbus_handler(void (*handler)(void)) { vmbus_handler = handler; diff --git a/drivers/hv/hv_common.c b/drivers/hv/hv_common.c index 2763cb6d3678..f5a07fd9a03b 100644 --- a/drivers/hv/hv_common.c +++ b/drivers/hv/hv_common.c @@ -677,6 +677,11 @@ void __weak hv_remove_vmbus_handler(void) } EXPORT_SYMBOL_GPL(hv_remove_vmbus_handler); +void __weak hv_setup_mshv_handler(void (*handler)(void)) +{ +} +EXPORT_SYMBOL_GPL(hv_setup_mshv_handler); + void __weak hv_setup_kexec_handler(void (*handler)(void)) { } diff --git a/include/asm-generic/mshyperv.h b/include/asm-generic/mshyperv.h index 1f46d19a16aa..a05f12e63ccd 100644 --- a/include/asm-generic/mshyperv.h +++ b/include/asm-generic/mshyperv.h @@ -208,6 +208,7 @@ void hv_setup_kexec_handler(void (*handler)(void)); void hv_remove_kexec_handler(void); void hv_setup_crash_handler(void (*handler)(struct pt_regs *regs)); void hv_remove_crash_handler(void); +void hv_setup_mshv_handler(void (*handler)(void)); extern int vmbus_interrupt; extern int vmbus_irq;