linux-kernel - [PATCH v2 0/1] iommu/amd: Enable PCIe ACS only if AMD IOMMU is

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Message-Id: <20251011031448.2699-1-guojinhui.liam@bytedance.com>
Date: Sat, 11 Oct 2025 11:14:47 +0800
From: Jinhui Guo <guojinhui.liam@...edance.com>
To: joro@...tes.org,
	suravee.suthikulpanit@....com
Cc: guojinhui.liam@...edance.com,
	iommu@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 0/1] iommu/amd: Enable PCIe ACS only if AMD IOMMU is

Hi all,

To preserve PCIe performance, ACS is enabled only when
AMD IOMMU is not disabled.

[This text serves solely as the patch changelog.]

Thanks,
Jinhui

---
v1: https://lore.kernel.org/all/20250928075257.1542-1-guojinhui.liam@bytedance.com/

Changelog in v1 -> v2 (suggested by Suravee):
 - Drop the amd_iommu_force_enable check; it's only used
   to skip a workaround in the same function.

Jinhui Guo (1):
  iommu/amd: Enable PCIe ACS only if AMD IOMMU is on

 drivers/iommu/amd/init.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

-- 
2.20.1