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 CE3E71C57B1; Tue, 15 Oct 2024 12:01:41 +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=1728993701; cv=none; b=X/B5Jnq5wLa17eSDUGjLKf6WQ/utWgiA+E8y1kk5t0GUG6hM3tR0ictdIaiggl/Vn6wGkdvWBl8labuYeaSKxk8emFosE2tTS1agzQrZe+I7Ff7Z9jRTsmOmUheBZfI1bZ2sfBdDaj+1nBgzzKIRJNcjqYmHwy2qfF2BxhzcEEk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728993701; c=relaxed/simple; bh=bIh0UWv0bgVV1KmR6gN9FveW+VGJhwLvvOlMR1QmUy4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=l58AvXQzNdFJAWyDCSPcBDxKBkiDAqRHUgMQxq17+LDS1BNn3dFZng9jgDEBNT1afDqyVYD6/b9aqLHZXivudAKF5Bd8oZHWmkBXe16iScO2uSk9zz6sk1/bsyxOK1cEumLBUjud4jC+fTktUpSXzewsrDEgLIhUOVzC+doKqJ8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=EiJenGMZ; 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="EiJenGMZ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 53089C4CEC6; Tue, 15 Oct 2024 12:01:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1728993701; bh=bIh0UWv0bgVV1KmR6gN9FveW+VGJhwLvvOlMR1QmUy4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=EiJenGMZ2AtHAaaBSAVzbDDzFgI2AVIIgO9NEfCnKZYhVDr8Ylua4asjJB7tUYi8+ Dukii2jR+qtwHWqGEF3LlcSUWGLj24qM8WZF18jj5VfjQvy8R+A8h3Fb6ScUqT6Mbz 9G1JR7nDPX63UFSxCBncswoLgIGDr4IzBWiy4QlM= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Lu Baolu , Jason Gunthorpe , Kevin Tian , Jerry Snitselaar , Joerg Roedel , Sasha Levin Subject: [PATCH 5.15 448/691] iommu/vt-d: Always reserve a domain ID for identity setup Date: Tue, 15 Oct 2024 13:26:36 +0200 Message-ID: <20241015112458.129442476@linuxfoundation.org> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241015112440.309539031@linuxfoundation.org> References: <20241015112440.309539031@linuxfoundation.org> User-Agent: quilt/0.67 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 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Lu Baolu [ Upstream commit 2c13012e09190174614fd6901857a1b8c199e17d ] We will use a global static identity domain. Reserve a static domain ID for it. Signed-off-by: Lu Baolu Reviewed-by: Jason Gunthorpe Reviewed-by: Kevin Tian Reviewed-by: Jerry Snitselaar Link: https://lore.kernel.org/r/20240809055431.36513-4-baolu.lu@linux.intel.com Signed-off-by: Joerg Roedel Signed-off-by: Sasha Levin --- drivers/iommu/intel/iommu.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index 46b2751c3f003..acb870a877ec0 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -1846,10 +1846,10 @@ static int iommu_init_domains(struct intel_iommu *iommu) * entry for first-level or pass-through translation modes should * be programmed with a domain id different from those used for * second-level or nested translation. We reserve a domain id for - * this purpose. + * this purpose. This domain id is also used for identity domain + * in legacy mode. */ - if (sm_supported(iommu)) - set_bit(FLPT_DEFAULT_DID, iommu->domain_ids); + set_bit(FLPT_DEFAULT_DID, iommu->domain_ids); return 0; } -- 2.43.0