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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7C4F1C43334 for ; Fri, 8 Jul 2022 13:56:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238278AbiGHN4D (ORCPT ); Fri, 8 Jul 2022 09:56:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57002 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237725AbiGHN4B (ORCPT ); Fri, 8 Jul 2022 09:56:01 -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 917282B1B1; Fri, 8 Jul 2022 06:56:00 -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 2F0BA62817; Fri, 8 Jul 2022 13:56:00 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 79104C341C0; Fri, 8 Jul 2022 13:55:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1657288559; bh=vUnJeGk6PURBMTNQYZb3D8KGF3E0//wVCAiUeEdZQuA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LdhAUE1eiT10VVl+XThRV7BK1mqecq4Uht/fc+RdwjeWRRMg6KxJbVNAl11h7mzxC zsnC4OOlVXla3W/VTgWAvvHs6hp67eeRt8osWH8T0AjfhWUYsBu/iK8Doea25/XFTh Hj43AV8K1ZvZJN3ad/3mLLLWK552cOerDhyPMzRpmM9XOT/UKzUzMV38sIlQ7wT7Sf PECcKLvd1tkxzM4kQF/z3LcKkFXbDTo1FjT27g24OB3m2oon0MltBGSAq3rkL2Fp5P /U1G7yQoknPGTY2/+YeKe34fvKOaTaV99hBrykCjBWMVPsXSUpNi0yZtoSYO88VRSc sgRQYD4EaWk8A== From: Will Deacon To: Sai Prakash Ranjan , Joerg Roedel , Robin Murphy Cc: catalin.marinas@arm.com, kernel-team@android.com, Will Deacon , Bjorn Andersson , linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org Subject: Re: [PATCHv3] iommu/arm-smmu-qcom: Add debug support for TLB sync timeouts Date: Fri, 8 Jul 2022 14:55:53 +0100 Message-Id: <165728615303.683968.1528285807329632811.b4-ty@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20220708094230.4349-1-quic_saipraka@quicinc.com> References: <20220708094230.4349-1-quic_saipraka@quicinc.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 8 Jul 2022 15:12:30 +0530, Sai Prakash Ranjan wrote: > TLB sync timeouts can be due to various reasons such as TBU power down > or pending TCU/TBU invalidation/sync and so on. Debugging these often > require dumping of some implementation defined registers to know the > status of TBU/TCU operations and some of these registers are not > accessible in non-secure world such as from kernel and requires SMC > calls to read them in the secure world. So, add this debug support > to dump implementation defined registers for TLB sync timeout issues. > > [...] Applied to will (for-joerg/arm-smmu/updates), thanks! [1/1] iommu/arm-smmu-qcom: Add debug support for TLB sync timeouts https://git.kernel.org/will/c/b9b721d117e9 Cheers, -- Will https://fixes.arm64.dev https://next.arm64.dev https://will.arm64.dev