From mboxrd@z Thu Jan 1 00:00:00 1970 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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 31839F357AD for ; Tue, 24 Feb 2026 14:30:43 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vutQs-0005m0-RD; Tue, 24 Feb 2026 09:30:39 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vutQc-0005ky-SR; Tue, 24 Feb 2026 09:30:25 -0500 Received: from frasgout.his.huawei.com ([185.176.79.56]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vutQT-0008V6-LP; Tue, 24 Feb 2026 09:30:18 -0500 Received: from mail.maildlp.com (unknown [172.18.224.83]) by frasgout.his.huawei.com (SkyGuard) with ESMTPS id 4fL0VP1jLCzJ46bn; Tue, 24 Feb 2026 22:29:49 +0800 (CST) Received: from dubpeml500005.china.huawei.com (unknown [7.214.145.207]) by mail.maildlp.com (Postfix) with ESMTPS id E68E040086; Tue, 24 Feb 2026 22:30:10 +0800 (CST) Received: from localhost (10.203.177.15) by dubpeml500005.china.huawei.com (7.214.145.207) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Tue, 24 Feb 2026 14:30:10 +0000 Date: Tue, 24 Feb 2026 14:30:08 +0000 To: Shameer Kolothum CC: , , , , , , , , , , , Subject: Re: [PATCH v7 4/5] hw/arm/smmuv3: Introduce a helper function for event propagation Message-ID: <20260224143008.00007b6f@huawei.com> In-Reply-To: <20260219090103.33697-5-skolothumtho@nvidia.com> References: <20260219090103.33697-1-skolothumtho@nvidia.com> <20260219090103.33697-5-skolothumtho@nvidia.com> X-Mailer: Claws Mail 4.3.0 (GTK 3.24.42; x86_64-w64-mingw32) MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.203.177.15] X-ClientProxiedBy: lhrpeml100009.china.huawei.com (7.191.174.83) To dubpeml500005.china.huawei.com (7.214.145.207) Received-SPF: pass client-ip=185.176.79.56; envelope-from=jonathan.cameron@huawei.com; helo=frasgout.his.huawei.com X-Spam_score_int: -31 X-Spam_score: -3.2 X-Spam_bar: --- X-Spam_report: (-3.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.358, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.659, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-arm@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-to: Jonathan Cameron From: Jonathan Cameron via Errors-To: qemu-arm-bounces+qemu-arm=archiver.kernel.org@nongnu.org Sender: qemu-arm-bounces+qemu-arm=archiver.kernel.org@nongnu.org On Thu, 19 Feb 2026 09:01:02 +0000 Shameer Kolothum wrote: > Factor out the code that propagates event records to the guest into a > helper function. The accelerated SMMUv3 path can use this to propagate > host events in a subsequent patch. > > Take the mutex inside the helper before accessing the Event Queue. > Today event propagation occurs only in the core SMMUv3 path and is > effectively serialized. A subsequent patch will also invoke this helper > from the accelerated event read path, which may run concurrently. > Therefore serialization is required here. > > No functional change intended. > > Reviewed-by: Nicolin Chen > Reviewed-by: Eric Auger > Tested-by: Nicolin Chen > Signed-off-by: Shameer Kolothum Reviewed-by: Jonathan Cameron From mboxrd@z Thu Jan 1 00:00:00 1970 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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 44E00F357AD for ; Tue, 24 Feb 2026 14:31:01 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vutQv-0005mH-Bj; Tue, 24 Feb 2026 09:30:41 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vutQc-0005ky-SR; Tue, 24 Feb 2026 09:30:25 -0500 Received: from frasgout.his.huawei.com ([185.176.79.56]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vutQT-0008V6-LP; Tue, 24 Feb 2026 09:30:18 -0500 Received: from mail.maildlp.com (unknown [172.18.224.83]) by frasgout.his.huawei.com (SkyGuard) with ESMTPS id 4fL0VP1jLCzJ46bn; Tue, 24 Feb 2026 22:29:49 +0800 (CST) Received: from dubpeml500005.china.huawei.com (unknown [7.214.145.207]) by mail.maildlp.com (Postfix) with ESMTPS id E68E040086; Tue, 24 Feb 2026 22:30:10 +0800 (CST) Received: from localhost (10.203.177.15) by dubpeml500005.china.huawei.com (7.214.145.207) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Tue, 24 Feb 2026 14:30:10 +0000 Date: Tue, 24 Feb 2026 14:30:08 +0000 To: Shameer Kolothum CC: , , , , , , , , , , , Subject: Re: [PATCH v7 4/5] hw/arm/smmuv3: Introduce a helper function for event propagation Message-ID: <20260224143008.00007b6f@huawei.com> In-Reply-To: <20260219090103.33697-5-skolothumtho@nvidia.com> References: <20260219090103.33697-1-skolothumtho@nvidia.com> <20260219090103.33697-5-skolothumtho@nvidia.com> X-Mailer: Claws Mail 4.3.0 (GTK 3.24.42; x86_64-w64-mingw32) MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.203.177.15] X-ClientProxiedBy: lhrpeml100009.china.huawei.com (7.191.174.83) To dubpeml500005.china.huawei.com (7.214.145.207) Received-SPF: pass client-ip=185.176.79.56; envelope-from=jonathan.cameron@huawei.com; helo=frasgout.his.huawei.com X-Spam_score_int: -31 X-Spam_score: -3.2 X-Spam_bar: --- X-Spam_report: (-3.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.358, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.659, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-to: Jonathan Cameron From: Jonathan Cameron via qemu development Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On Thu, 19 Feb 2026 09:01:02 +0000 Shameer Kolothum wrote: > Factor out the code that propagates event records to the guest into a > helper function. The accelerated SMMUv3 path can use this to propagate > host events in a subsequent patch. > > Take the mutex inside the helper before accessing the Event Queue. > Today event propagation occurs only in the core SMMUv3 path and is > effectively serialized. A subsequent patch will also invoke this helper > from the accelerated event read path, which may run concurrently. > Therefore serialization is required here. > > No functional change intended. > > Reviewed-by: Nicolin Chen > Reviewed-by: Eric Auger > Tested-by: Nicolin Chen > Signed-off-by: Shameer Kolothum Reviewed-by: Jonathan Cameron