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 3F6701B81D7; Wed, 25 Sep 2024 11:42:39 +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=1727264559; cv=none; b=dVX4oT4jUcBtZabVx9hx3egWWgyKchJxXV5aC5fSwzx6t9O/8f3ufisEcs2180JXnRCFQtt/bG9mQzAoM4muy003047/myS6xl0bYnIBCQztBhxp3EB36yk7bfO3LIZNG/eGxx0XXDEMGSVw9zs7KFa+DDxypa/jxsjIdJDgFdg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727264559; c=relaxed/simple; bh=0KQd0k1y4+JdAS4TDaDIygSxEqnD7snMQNXNK2SjcLU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=E0bHx4uU9MW19ZkWAYrAOAkCA0NX9n6qx17tEgrkHnX6v/7Q/Kmut2tlZM42fm7kG777Fj1USkWxZBnxWoPMN57MEEpYeKPj7d4cO+xm4OGD7D+lUMjw5ftB9zLBGGR0d0CW7Zo7KtPmxio8q3fGh71LDGH28zPyRXErxKmmj5A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=cIUA9q0C; 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="cIUA9q0C" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 480ECC4CECF; Wed, 25 Sep 2024 11:42:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1727264559; bh=0KQd0k1y4+JdAS4TDaDIygSxEqnD7snMQNXNK2SjcLU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cIUA9q0CChMW1ukPwlHrRMgKOfT5RIPDLoARPmubMBejEyTLXJFEEByztSRb4Jssv xXBIGI0tiOeUDdx5WcHBxSdMChyDS1m50RUdbsVoAy9cZ6E405lX6nPHtlQuaWo2x3 hxjWxnM0yoYDoP+LF2uAlAoOKmM/01exs9lxSfvCpNPRxqrkG31yJmk3aIIFaR9h79 d3bqYVLC2f/fY4GNpPxXd0CgvjdGCIIT858IppOyF2s9GYZ9wS96E8KbUI8SskhRUJ WkdGuHgvebMbedYXO/kgNkmp/RbJox0nwCL/kgE00xPU6kjrlnV16lj1WEloWaVAR6 r33u9iIdGTKlw== 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 6.11 124/244] iommu/vt-d: Always reserve a domain ID for identity setup Date: Wed, 25 Sep 2024 07:25:45 -0400 Message-ID: <20240925113641.1297102-124-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240925113641.1297102-1-sashal@kernel.org> References: <20240925113641.1297102-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.11 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 4aa070cf56e70..e3e513cabc86a 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -1447,10 +1447,10 @@ 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