linux-kernel - [PATCH 5.10 1/1] iommu/amd: Prepare for multiple DMA domain types

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <20241018095122.437330-2-d.dulov@aladdin.ru>
Date: Fri, 18 Oct 2024 12:51:22 +0300
From: Daniil Dulov <d.dulov@...ddin.ru>
To: <stable@...r.kernel.org>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC: Daniil Dulov <d.dulov@...ddin.ru>, Joerg Roedel <joro@...tes.org>, Will
 Deacon <will@...nel.org>, "open list:AMD IOMMU (AMD-VI)"
	<iommu@...ts.linux-foundation.org>, <linux-kernel@...r.kernel.org>,
	<lvc-project@...uxtesting.org>, Robin Murphy <robin.murphy@....com>, Joerg
 Roedel <jroedel@...e.de>
Subject: [PATCH 5.10 1/1] iommu/amd: Prepare for multiple DMA domain types

From: Robin Murphy <robin.murphy@....com>

commit 6d596039392bac2a0160fb71300d314943411e2a  upstream.

The DMA ops reset/setup can simply be unconditional, since
iommu-dma already knows only to touch DMA domains.

Signed-off-by: Robin Murphy <robin.murphy@....com>
Link: https://lore.kernel.org/r/6450b4f39a5a086d505297b4a53ff1e4a7a0fe7c.1628682049.git.robin.murphy@arm.com
Signed-off-by: Joerg Roedel <jroedel@...e.de>
Signed-off-by: Daniil Dulov <d.dulov@...ddin.ru>
---
 drivers/iommu/amd/iommu.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c
index 0a061a196b53..16a1c2a44bce 100644
--- a/drivers/iommu/amd/iommu.c
+++ b/drivers/iommu/amd/iommu.c
@@ -2257,12 +2257,9 @@ static struct iommu_device *amd_iommu_probe_device(struct device *dev)
 
 static void amd_iommu_probe_finalize(struct device *dev)
 {
-	struct iommu_domain *domain;
-
 	/* Domains are initialized for this device - have a look what we ended up with */
-	domain = iommu_get_domain_for_dev(dev);
-	if (domain->type == IOMMU_DOMAIN_DMA)
-		iommu_setup_dma_ops(dev, IOVA_START_PFN << PAGE_SHIFT, 0);
+	set_dma_ops(dev, NULL);
+	iommu_setup_dma_ops(dev, 0, U64_MAX);
 }
 
 static void amd_iommu_release_device(struct device *dev)
-- 
2.25.1