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 BD6FA1E1A3B; Wed, 25 Sep 2024 12:03:36 +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=1727265816; cv=none; b=DlDqjiW/s7gji0HOeJwRxiZIHxMY1Yv5gyp2WB8mYCrCJ4989GPWt4Y9JrFdjIEM4q+X4x60pEmokvu8xNO5djZVYaXZTAogLuaGx4tal+4Fd4479pf7nq9Gw78eynixqHx4FM1IQJfohEIx5DuZt+aKsgAi0zP8IoNzHU9jRVM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727265816; c=relaxed/simple; bh=sG+YR21KKAj/tfJpOX/8rEsopszcBLwNQ0dcCogdoT0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=HejboHzpn2lBHdp1JY37IskAHoR7Xwizw+KH9eJ9TFIZrHFSOtKBUST9A89BDuXmY8FwlWg4pA6gvvhX4T9Bh0ekJpiQ+g1fHXhq8j5Qoh5ZFlZFrVDZAGFwlw/DD8BLLl2LbwWbq2YydVnQSdACoWTKUG8YkIijd/yP1V6HZmo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=s083TyZ1; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="s083TyZ1" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 27337C4CECD; Wed, 25 Sep 2024 12:03:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1727265816; bh=sG+YR21KKAj/tfJpOX/8rEsopszcBLwNQ0dcCogdoT0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=s083TyZ1N0xJQAi1YNPXLyz1Urz+PpMn199S4ZwAsB7/ejb06pRwxmakcYiglM/Oo X5q+bmo5sRN1+Yx1dtgIJ1NJNTw6KAlqBy5AeHxEy+A3k27xH6ssqa8kMA/ayXkAet gHKBN89IQmpg15heheum1Lg4ad2Mo4NeoTCqPo/8msIWcqk2+N9J/u78cXwWGCy3EO +4vTngj8ZMkNunDeN+2G2owEJtQI7GZ6d0wQUkje4FgOEmZ5S59SqSfcxcTDihB8uZ y1yKlJAOeKjZME00yHcLpS7/ZAdYbqiNz0VcVqYRNFxRfoWq7mVV1gzcstWIqk9lu6 ilwwXt+T589Gg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Lu Baolu , Jason Gunthorpe , Kevin Tian , Jerry Snitselaar , Joerg Roedel , Sasha Levin , dwmw2@infradead.org, joro@8bytes.org, will@kernel.org, iommu@lists.linux.dev Subject: [PATCH AUTOSEL 6.10 107/197] iommu/vt-d: Always reserve a domain ID for identity setup Date: Wed, 25 Sep 2024 07:52:06 -0400 Message-ID: <20240925115823.1303019-107-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240925115823.1303019-1-sashal@kernel.org> References: <20240925115823.1303019-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.10.11 Content-Transfer-Encoding: 8bit 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 e9bea0305c268..eed67326976d3 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -1462,10 +1462,10 @@ 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