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[2620:137:e000::1:20]) by mx.google.com with ESMTP id f12-20020a170902ce8c00b001a1dfd6b109si2023774plg.261.2023.04.06.08.53.24; Thu, 06 Apr 2023 08:54:06 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=mKbmkicE; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239229AbjDFPwq (ORCPT + 99 others); Thu, 6 Apr 2023 11:52:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55360 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239269AbjDFPwL (ORCPT ); Thu, 6 Apr 2023 11:52:11 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B7B0593EF for ; Thu, 6 Apr 2023 08:52:09 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id ED607649B4 for ; Thu, 6 Apr 2023 15:52:08 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id F38C9C433D2; Thu, 6 Apr 2023 15:52:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1680796328; bh=itjRrPUnDLptTgKtwsB/VQxf8oaTux6pNX6hwyv2EBw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mKbmkicE3z3ODudPsYwp2nShnp9UnisWHum6Iq4po8rfguoppnJZxvxl3sIyKpwWD wAld0A4Mi2FwbQU2scz7rs0rR5+Xnw/rEhwP6FCoC4auB5t+P+csOBePm+c86l/1Xc 4BjrEeNkeL5+FVT0j9KC7Mk+O3/rgdgvu2c8zFiljgyS1D1ngw6kV2uM8+EaezMtwE UbPbsxXboeGQlpk/e76QQgKq2hJ30Ru9ENdl0Zuju6oJKxuZhZn6qfKXojVYC+tJrX dFd0tg7flwNoe9n80vwCSKPeWdOxG68TZzWkOvaXKrWe94jCF/kWuuspKI9nA9YOOC ZbIr9iTv2cA8g== From: Will Deacon To: tomas.krcka@gmail.com Cc: catalin.marinas@arm.com, kernel-team@android.com, Will Deacon , Tomas Krcka , linux-kernel@vger.kernel.org, Jason Gunthorpe , Robin Murphy , Joerg Roedel , iommu@lists.linux.dev, linux-arm-kernel@lists.infradead.org, Shameer Kolothum , Lu Baolu Subject: Re: [PATCH] iommu/arm-smmu-v3: Acknowledge pri/event queue overflow if any Date: Thu, 6 Apr 2023 16:51:52 +0100 Message-Id: <168018870548.1679607.17364698825564495778.b4-ty@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20230329123420.34641-1-tomas.krcka@gmail.com> References: <20230329123420.34641-1-tomas.krcka@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-2.5 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED,SPF_HELO_NONE, SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 29 Mar 2023 12:34:19 +0000, tomas.krcka@gmail.com wrote: > From: Tomas Krcka > > When an overflow occurs in the PRI queue, the SMMU toggles the overflow > flag in the PROD register. To exit the overflow condition, the PRI thread > is supposed to acknowledge it by toggling this flag in the CONS register. > Unacknowledged overflow causes the queue to stop adding anything new. > > [...] Applied to will (for-joerg/arm-smmu/updates), thanks! [1/1] iommu/arm-smmu-v3: Acknowledge pri/event queue overflow if any https://git.kernel.org/will/c/67ea0b7ce418 Cheers, -- Will https://fixes.arm64.dev https://next.arm64.dev https://will.arm64.dev