From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793571422; b=GhoTqwgFwXaQVZDzA7EiW1KXm85d0d8Rz2DtPKF3s4lb8hCKbxhDygTVAsNCuw+0w3Zj E+AnMLn34uUakQ1yD0QI024iaxlyCYffHwBIya1AfjAB25oXkBst5OXa6vMUjLk2uGgp7 8CoZ11sqbGoLfLiXe/nZaT0lv77G5F8SDvONPJJb4u6Npuxhh3nTRvt/sNOJTC1j2OnCD X/Ar9KL3dZfixsoFmxW/NgNM7f51Hn7OdVp3SzK8oHw0y3DI71LpL4FE3CA0IYxDi8RCU z7KAsJV0tXPbal1Gr4hrhkr5zDpK4UTgq/e5BEto4xOMKvD/PEOnoBm+l33xJLxgh4w== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793571422; h=Received:DKIM-Signature:Received:Content-Type:MIME-Version: Content-Transfer-Encoding:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; bh=TlXe8GaWIxgfUN9oJ8ZkUQcX+CJa5NmDUSw16Gb5fjc=; b=L7C4h8mVgXtkwriQtBmn9S+uIBhHPcpKTKnWFsY1AhX/M5v8qE6pVNxneBTANaaYwTxp 2NY34yAe7vKmKwCn7Qq+rvqGuAP9kdnsXzviXimi73MbkVqHqOm6mpravOgNTy15Lzj/1 xfAZsOxFYnjfNnVkbmn2kJXjEUhqvubukGm608+xHwPJv+M8LsFHVr197+6AdNQh081xT /MWOm4qCDy7zIH/yINI3qW3iHd6IZRXEYHD1Ml4ZIwafCZyQ5pTTKTdj++qS5BBbLTvjD 8+7OiVLgi8QOTVH/3aaYyJrnySB/+OzxoABC0IJnbohgvmjEMLdGL0/R+9L5bPooV+Q== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=NZrw5s7x; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 75B2A606E526; Sun, 1 Nov 2026 22:17:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=NZrw5s7x Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4DD891F00919; Sun, 1 Nov 2026 22:17:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793571422; bh=TlXe8GaWIxgfUN9oJ8ZkUQcX+CJa5NmDUSw16Gb5fjc=; h=Subject:From:Date:References:In-Reply-To:To:Cc; b=NZrw5s7xCTCVTHEcPZ6ICCwQcLn1a+2gAWUq/xgjMGIwe62ebpNx35HwduJR74RtD Wtw5mKLKuGifhjgEA6clDYtsUyRCTEfKuRo7vY1XkeSmTmXv1+e3p+HUli5e3ZTi2Y i9rG4TM2uz4kteJn95cq2ahfPBpXAo1F/XJJuxWauBorD5YRiFJ6D9fY/bTnOZnYow l3CSm8xldcSTJYHEwAGX80HT9M/wTRLLvM08uTOyVfY6M/fbZyBNdAOZq4LPlCSOvK EYLx5PlMzCVUUQ2QdxFluRLGxcOv9MrH+Q5IPus8GLHZb/lazuMZ7S0yVjXdFYfw4O hw/UwjPRITAgQ== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id 401F638003B8; Sun, 1 Nov 2026 22:17:02 +0000 (UTC) Content-Type: text/plain; charset="utf-8" X-Mailing-List: iommu@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH] iommu/riscv: Report cache coherency capability From: patchwork-bot+linux-riscv@kernel.org Message-Id: <179357142079.2624073.16238514118211699768.git-patchwork-notify@kernel.org> Date: Sun, 01 Nov 2026 22:17:00 +0000 References: <20260821112100.572037-1-andrew.jones@oss.qualcomm.com> In-Reply-To: <20260821112100.572037-1-andrew.jones@oss.qualcomm.com> To: Andrew Jones Cc: linux-riscv@lists.infradead.org, iommu@lists.linux.dev, linux-kernel@vger.kernel.org, jgg@nvidia.com, tomasz.jeznach@linux.dev, joro@8bytes.org, will@kernel.org, robin.murphy@arm.com, pjw@kernel.org, palmer@dabbelt.com Hello: This patch was applied to riscv/linux.git (fixes) by Joerg Roedel : On Fri, 21 Aug 2026 13:21:00 +0200 you wrote: > VFIO and iommufd require IOMMU_CAP_CACHE_COHERENCY because they use > IOMMU_CACHE mappings and have no userspace cache-maintenance path. > > RISC-V page tables preserve physical memory attributes for IOMMU_CACHE > mappings. Svpbmt marks mappings without IOMMU_CACHE as non-cacheable, > but preserving physical attributes cannot make a noncoherent device > path coherent. > > [...] Here is the summary with links: - iommu/riscv: Report cache coherency capability https://git.kernel.org/riscv/c/3069e8f3e1e9 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1E090606A6C0 for ; Sun, 1 Nov 2026 22:17:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=KH15hHoy; 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Sun, 1 Nov 2026 22:17:02 +0000 (UTC) X-Archived-By: MIME-Version: 1.0 Subject: Re: [PATCH] iommu/riscv: Report cache coherency capability From: patchwork-bot+linux-riscv@kernel.org Message-Id: <179357142079.2624073.16238514118211699768.git-patchwork-notify@kernel.org> Date: Sun, 01 Nov 2026 22:17:00 +0000 References: <20260821112100.572037-1-andrew.jones@oss.qualcomm.com> In-Reply-To: <20260821112100.572037-1-andrew.jones@oss.qualcomm.com> To: Andrew Jones Cc: linux-riscv@lists.infradead.org, iommu@lists.linux.dev, linux-kernel@vger.kernel.org, jgg@nvidia.com, tomasz.jeznach@linux.dev, joro@8bytes.org, will@kernel.org, robin.murphy@arm.com, pjw@kernel.org, palmer@dabbelt.com X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" X-Spam-Status: No, score=-8.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_EF,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 Hello: This patch was applied to riscv/linux.git (fixes) by Joerg Roedel : On Fri, 21 Aug 2026 13:21:00 +0200 you wrote: > VFIO and iommufd require IOMMU_CAP_CACHE_COHERENCY because they use > IOMMU_CACHE mappings and have no userspace cache-maintenance path. > > RISC-V page tables preserve physical memory attributes for IOMMU_CACHE > mappings. Svpbmt marks mappings without IOMMU_CACHE as non-cacheable, > but preserving physical attributes cannot make a noncoherent device > path coherent. > > [...] Here is the summary with links: - iommu/riscv: Report cache coherency capability https://git.kernel.org/riscv/c/3069e8f3e1e9 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv