From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CDF6425A63D; Tue, 25 Mar 2025 12:31:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742905901; cv=none; b=PAhGB4OMDbpwxENDrmXYd/QrhC2D4beJyeMTpCr2q/tbKRhbuFtikugUoAzvyAsMqluajmDQEq5nf/UFhsA8jeZRG8pvWSW4hTv+n85Ld1IMz8svh0mL6TS30IeXTSZOz0HchpCo41bg36JQL85vBPTdfxnHbLT7gqt4Hblt304= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742905901; c=relaxed/simple; bh=bqax7SUXDmL0LkHTfV5Tg34wyVYg41YsDsSlGdafIhU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=N7hGJpKcQKD5pybdqvrCMCLxYZRIEMkE4Qdg1FdV50CHTcgC1jtTYUF+9U/U914HO9NS7U9zIepDRDkQJRQ62oGWB2324nw6rPCAoAAqhquEC+umamUQTYFu0s+M8Ws29GGm0ZVnLxUfVXqU02khz8BwFkwqXrvmf4FCFjTkUEM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=2STmhyRl; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="2STmhyRl" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8151FC4CEE4; Tue, 25 Mar 2025 12:31:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1742905901; bh=bqax7SUXDmL0LkHTfV5Tg34wyVYg41YsDsSlGdafIhU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=2STmhyRlNwt1i6obLggX6P7vbkiNUUI2J+QzeGGW8wnFZzWa2NC1hbwzp4UhtaD7E ubsthgUl14hJ7HjFmRrbC61878OwoVMI8cd+02V1F+nhS7VVhZ9NChAbAXnVOqI93h 7PRoyD36rPAW7AIUP1Asw0pVUntqNxvCIMXABaas= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Dmitry Baryshkov , Konrad Dybcio , Bjorn Andersson , Sasha Levin Subject: [PATCH 6.13 009/119] Revert "arm64: dts: qcom: sdm845: Affirm IDR0.CCTW on apps_smmu" Date: Tue, 25 Mar 2025 08:21:07 -0400 Message-ID: <20250325122149.300351600@linuxfoundation.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250325122149.058346343@linuxfoundation.org> References: <20250325122149.058346343@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.13-stable review patch. If anyone has any objections, please let me know. ------------------ From: Konrad Dybcio [ Upstream commit f00db31d235946853fb430de8c6aa1295efc8353 ] There are reports that the pagetable walker cache coherency is not a given across the spectrum of SDM845/850 devices, leading to lock-ups and resets. It works fine on some devices (like the Dragonboard 845c, but not so much on the Lenovo Yoga C630). This unfortunately looks like a fluke in firmware development, where likely somewhere in the vast hypervisor stack, a change to accommodate for this was only introduced after the initial software release (which often serves as a baseline for products). Revert the change to avoid additional guesswork around crashes. This reverts commit 6b31a9744b8726c69bb0af290f8475a368a4b805. Reported-by: Dmitry Baryshkov Closes: https://lore.kernel.org/linux-arm-msm/20250215-yoga-dma-coherent-v1-1-2419ee184a81@linaro.org/ Fixes: 6b31a9744b87 ("arm64: dts: qcom: sdm845: Affirm IDR0.CCTW on apps_smmu") Signed-off-by: Konrad Dybcio Link: https://lore.kernel.org/r/20250225-topic-845_smmu_not_coherent-v1-1-98ca9d17471c@oss.qualcomm.com Signed-off-by: Bjorn Andersson Signed-off-by: Sasha Levin --- arch/arm64/boot/dts/qcom/sdm845.dtsi | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi index cb9fae39334c8..5eb076a109f47 100644 --- a/arch/arm64/boot/dts/qcom/sdm845.dtsi +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi @@ -5159,7 +5159,6 @@ apps_smmu: iommu@15000000 { , , ; - dma-coherent; }; anoc_1_tbu: tbu@150c5000 { -- 2.39.5