From patchwork Thu Jul 27 19:54:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nuno Das Neves X-Patchwork-Id: 13330642 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id DA160C001DC for ; Thu, 27 Jul 2023 19:55:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=DKl1jfZwSi8RcibqbzvS3u8cw4X4DXbg7KkA9JYz9/Y=; b=fUcwWO6rtUUnLH MqgdO4QunHRrYAexqD0CDy/TQQKhOsOJpIuuynK0nJOSVbm85A+WQhZwvON06bnsGvgamksWKDmEG uCKTu4Dwb1rYNzIENcPf2cILY6cBSN7T4gGxbZuzfnda+6o9ceSXIWkSD9IhuuaKCD6vB0ppNUjEk j6KVsgYCui4Q0UM1Pela+DMz3K4jeLMicjkX+Vb0BYtmiHT6/R0xdtrXg3E5hT7dNBoo9gj+6TG2W VbVVD08zF+gR6BN9q2r54pVs3UcwsHC7F8A1aObCGQX59Aj9fCle8oCUU3aeYp94jL/Xce0kbwG6Y JsHMe+RD9FCnwkvx+yCA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qP756-000MtG-19; Thu, 27 Jul 2023 19:55:28 +0000 Received: from linux.microsoft.com ([13.77.154.182]) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qP74g-000MAp-28 for linux-arm-kernel@lists.infradead.org; Thu, 27 Jul 2023 19:55:06 +0000 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> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230727_125502_786211_0BBFA510 X-CRM114-Status: UNSURE ( 9.24 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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); +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 = set_irq_regs(regs); inc_irq_stat(irq_hv_callback_count); + if (mshv_handler) + mshv_handler(); + if (vmbus_handler) vmbus_handler(); @@ -139,6 +143,11 @@ DEFINE_IDTENTRY_SYSVEC(sysvec_hyperv_nested_vmbus_intr) set_irq_regs(old_regs); } +void hv_setup_mshv_irq(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 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); +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); +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));