From nobody Wed Sep 10 02:57:15 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 F335AC00528 for ; Thu, 27 Jul 2023 19:55:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232170AbjG0Tzo (ORCPT ); Thu, 27 Jul 2023 15:55:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34768 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232176AbjG0TzC (ORCPT ); Thu, 27 Jul 2023 15:55:02 -0400 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 4E1FE30D6; Thu, 27 Jul 2023 12:54:59 -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 73A482383EFA; Thu, 27 Jul 2023 12:54:57 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 73A482383EFA DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1690487697; bh=h738RNvcA5o4p69LOjSdBatj1DuwmgH8MKjylimMz/w=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YbDzD2b4olu+68DoBQ3IDYod06BsI5456KkcX2Y8PhJ8nmjVqT3yyQD+RgZ+P0xU1 sE5xb5QU0Cl/hNfKiFK/KoI4oE52MSXCmdFbTbNKrC+gIzJy21h/fGFnEZewYwlpOa 0HCj2zCebxI/Q24mRmF/QwrObi+xh8fpMLbi7G0I= 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: mikelley@microsoft.com, kys@microsoft.com, wei.liu@kernel.org, haiyangz@microsoft.com, decui@microsoft.com, ssengar@linux.microsoft.com, mukeshrathor@microsoft.com, stanislav.kinsburskiy@gmail.com, jinankjain@linux.microsoft.com, apais@linux.microsoft.com, Tianyu.Lan@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 10/15] x86: hyperv: Add mshv_handler irq handler and setup function Date: Thu, 27 Jul 2023 12:54:45 -0700 Message-Id: <1690487690-2428-11-git-send-email-nunodasneves@linux.microsoft.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1690487690-2428-1-git-send-email-nunodasneves@linux.microsoft.com> References: <1690487690-2428-1-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 --- 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 e44291e902ae..442d00fe70f1 100644 --- a/arch/x86/kernel/cpu/mshyperv.c +++ b/arch/x86/kernel/cpu/mshyperv.c @@ -105,6 +105,7 @@ 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); @@ -115,6 +116,9 @@ 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 @@ -139,6 +143,11 @@ DEFINE_IDTENTRY_SYSVEC(sysvec_hyperv_nested_vmbus_intr) 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 16f069beda78..678a3f2e1dc1 100644 --- a/drivers/hv/hv_common.c +++ b/drivers/hv/hv_common.c @@ -557,6 +557,11 @@ 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 9118d678b27a..2b20994d809e 100644 --- a/include/asm-generic/mshyperv.h +++ b/include/asm-generic/mshyperv.h @@ -193,6 +193,8 @@ 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