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From: Nicolin Chen <nicolinc@nvidia.com>
To: <joro@8bytes.org>, <jgg@nvidia.com>, <kevin.tian@intel.com>
Cc: <suravee.suthikulpanit@amd.com>, <will@kernel.org>,
	<robin.murphy@arm.com>, <sven@kernel.org>, <j@jannau.net>,
	<robin.clark@oss.qualcomm.com>, <m.szyprowski@samsung.com>,
	<krzk@kernel.org>, <dwmw2@infradead.org>,
	<baolu.lu@linux.intel.com>, <yong.wu@mediatek.com>,
	<matthias.bgg@gmail.com>,
	<angelogioacchino.delregno@collabora.com>,
	<tjeznach@rivosinc.com>, <pjw@kernel.org>, <palmer@dabbelt.com>,
	<aou@eecs.berkeley.edu>, <heiko@sntech.de>,
	<schnelle@linux.ibm.com>, <mjrosato@linux.ibm.com>,
	<orsonzhai@gmail.com>, <baolin.wang@linux.alibaba.com>,
	<wens@csie.org>, <jernej.skrabec@gmail.com>,
	<samuel@sholland.org>, <thierry.reding@gmail.com>,
	<jonathanh@nvidia.com>, <jean-philippe@linaro.org>,
	<iommu@lists.linux.dev>, <linux-kernel@vger.kernel.org>,
	<asahi@lists.linux.dev>, <linux-arm-kernel@lists.infradead.org>,
	<linux-arm-msm@vger.kernel.org>,
	<linux-samsung-soc@vger.kernel.org>,
	<linux-mediatek@lists.infradead.org>,
	<linux-riscv@lists.infradead.org>,
	<linux-rockchip@lists.infradead.org>,
	<linux-s390@vger.kernel.org>, <linux-sunxi@lists.linux.dev>,
	<linux-tegra@vger.kernel.org>, <virtualization@lists.linux.dev>,
	<patches@lists.linux.dev>
Subject: [PATCH v2 4/6] iommu/amd: Set release_domain to blocked_domain
Date: Wed, 22 Oct 2025 19:21:07 -0700	[thread overview]
Message-ID: <c1ffdeb056eb168800f108c8e4e8564e9589f7f9.1761017765.git.nicolinc@nvidia.com> (raw)
In-Reply-To: <cover.1761017765.git.nicolinc@nvidia.com>

The set_dev_pasid for a release domain never gets called anyhow. So, there
is no point in defining a separate release_domain from the blocked_domain.

Simply reuse the blocked_domain.

Suggested-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
---
 drivers/iommu/amd/iommu.c | 10 +---------
 1 file changed, 1 insertion(+), 9 deletions(-)

diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c
index 2e1865daa1cee..6f4559eb5121a 100644
--- a/drivers/iommu/amd/iommu.c
+++ b/drivers/iommu/amd/iommu.c
@@ -2685,14 +2685,6 @@ void amd_iommu_init_identity_domain(void)
 	protection_domain_init(&identity_domain);
 }
 
-/* Same as blocked domain except it supports only ops->attach_dev() */
-static struct iommu_domain release_domain = {
-	.type = IOMMU_DOMAIN_BLOCKED,
-	.ops = &(const struct iommu_domain_ops) {
-		.attach_dev     = blocked_domain_attach_device,
-	}
-};
-
 static int amd_iommu_attach_device(struct iommu_domain *dom,
 				   struct device *dev)
 {
@@ -3042,7 +3034,7 @@ static const struct iommu_dirty_ops amd_dirty_ops = {
 const struct iommu_ops amd_iommu_ops = {
 	.capable = amd_iommu_capable,
 	.blocked_domain = &blocked_domain,
-	.release_domain = &release_domain,
+	.release_domain = &blocked_domain,
 	.identity_domain = &identity_domain.domain,
 	.domain_alloc_paging_flags = amd_iommu_domain_alloc_paging_flags,
 	.domain_alloc_sva = amd_iommu_domain_alloc_sva,
-- 
2.43.0


  parent reply	other threads:[~2025-10-23  2:22 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-10-23  2:21 [PATCH v2 0/6] iommu: Pass in old_domain pointer to attach_dev Nicolin Chen
2025-10-23  2:21 ` [PATCH v2 1/6] iommu: Generic support for RMRs during device release Nicolin Chen
2025-10-23  4:43   ` Baolu Lu
2025-10-23  2:21 ` [PATCH v2 2/6] iommu/arm-smmu-v3: Set release_domain to arm_smmu_blocked_domain Nicolin Chen
2025-10-23  2:21 ` [PATCH v2 3/6] iommu/exynos-iommu: Set release_domain to exynos_identity_domain Nicolin Chen
2025-10-23  2:21 ` Nicolin Chen [this message]
2025-10-23  2:21 ` [PATCH v2 5/6] iommu: Do not revert set_domain for the last gdev Nicolin Chen
2025-10-23  4:50   ` Baolu Lu
2025-10-23  2:21 ` [PATCH v2 6/6] iommu: Pass in old domain to attach_dev callback functions Nicolin Chen
2025-10-23  4:58   ` Baolu Lu
2025-10-27 12:55 ` [PATCH v2 0/6] iommu: Pass in old_domain pointer to attach_dev Jörg Rödel
2025-12-19  8:10 ` patchwork-bot+linux-riscv

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