From nobody Wed Sep 10 02:39:10 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2F5AAE728CF for ; Fri, 29 Sep 2023 18:02:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233844AbjI2SC6 (ORCPT ); Fri, 29 Sep 2023 14:02:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56204 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233824AbjI2SCI (ORCPT ); Fri, 29 Sep 2023 14:02:08 -0400 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 453D5CE3; Fri, 29 Sep 2023 11:02:05 -0700 (PDT) Received: from linuxonhyperv3.guj3yctzbm1etfxqx2vob5hsef.xx.internal.cloudapp.net (linux.microsoft.com [13.77.154.182]) by linux.microsoft.com (Postfix) with ESMTPSA id 6817120B74C3; Fri, 29 Sep 2023 11:01:57 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 6817120B74C3 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1696010517; bh=+X19D62rwhGltzmqE9hkowrhpuhbGotyJ9cqKAt/I2k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Svl+o1aPZN9g64ZPJA152dkqcc1Q17nHMqBbccrEeM3HYmsignv9qc56AANMnTh8H RNJM/3j1pPg738h2nnAcFuizNQyWY+japk5CIpJFbFJ/tWOP6cTK0lAG87BHQG4XfU Y/nDJ9d1iC+IJvaTfQur/BjzSvGBPS2bOLtYqS2E= From: Nuno Das Neves To: linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, x86@kernel.org, linux-arm-kernel@lists.infradead.org, linux-arch@vger.kernel.org Cc: patches@lists.linux.dev, mikelley@microsoft.com, kys@microsoft.com, wei.liu@kernel.org, gregkh@linuxfoundation.org, haiyangz@microsoft.com, decui@microsoft.com, apais@linux.microsoft.com, Tianyu.Lan@microsoft.com, ssengar@linux.microsoft.com, mukeshrathor@microsoft.com, stanislav.kinsburskiy@gmail.com, jinankjain@linux.microsoft.com, vkuznets@redhat.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, will@kernel.org, catalin.marinas@arm.com Subject: [PATCH v4 10/15] x86: hyperv: Add mshv_handler irq handler and setup function Date: Fri, 29 Sep 2023 11:01:36 -0700 Message-Id: <1696010501-24584-11-git-send-email-nunodasneves@linux.microsoft.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1696010501-24584-1-git-send-email-nunodasneves@linux.microsoft.com> References: <1696010501-24584-1-git-send-email-nunodasneves@linux.microsoft.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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 | 2 ++ 3 files changed, 16 insertions(+) diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c index 9b898b65a013..06f79963add5 100644 --- a/arch/x86/kernel/cpu/mshyperv.c +++ b/arch/x86/kernel/cpu/mshyperv.c @@ -110,6 +110,7 @@ void hv_set_register(unsigned int reg, u64 value) } EXPORT_SYMBOL_GPL(hv_set_register); =20 +static void (*mshv_handler)(void); static void (*vmbus_handler)(void); static void (*hv_stimer0_handler)(void); static void (*hv_kexec_handler)(void); @@ -120,6 +121,9 @@ DEFINE_IDTENTRY_SYSVEC(sysvec_hyperv_callback) struct pt_regs *old_regs =3D set_irq_regs(regs); =20 inc_irq_stat(irq_hv_callback_count); + if (mshv_handler) + mshv_handler(); + if (vmbus_handler) vmbus_handler(); =20 @@ -129,6 +133,11 @@ DEFINE_IDTENTRY_SYSVEC(sysvec_hyperv_callback) set_irq_regs(old_regs); } =20 +void hv_setup_mshv_irq(void (*handler)(void)) +{ + mshv_handler =3D handler; +} + void hv_setup_vmbus_handler(void (*handler)(void)) { vmbus_handler =3D handler; diff --git a/drivers/hv/hv_common.c b/drivers/hv/hv_common.c index 3f6f23e4c579..6ec63502d83d 100644 --- a/drivers/hv/hv_common.c +++ b/drivers/hv/hv_common.c @@ -585,6 +585,11 @@ void __weak hv_remove_vmbus_handler(void) } EXPORT_SYMBOL_GPL(hv_remove_vmbus_handler); =20 +void __weak hv_setup_mshv_irq(void (*handler)(void)) +{ +} +EXPORT_SYMBOL_GPL(hv_setup_mshv_irq); + void __weak hv_setup_kexec_handler(void (*handler)(void)) { } diff --git a/include/asm-generic/mshyperv.h b/include/asm-generic/mshyperv.h index 4e49fd662b2b..d832852d0ee7 100644 --- a/include/asm-generic/mshyperv.h +++ b/include/asm-generic/mshyperv.h @@ -198,6 +198,8 @@ void hv_remove_vmbus_handler(void); void hv_setup_stimer0_handler(void (*handler)(void)); void hv_remove_stimer0_handler(void); =20 +void hv_setup_mshv_irq(void (*handler)(void)); + 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)); --=20 2.25.1