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Subject[PATCH 0/4] iommu/amd: Enable page-selective flushes
From: Nadav Amit <>

The previous patch, commit 268aa4548277 ("iommu/amd: Page-specific
invalidations for more than one page") was supposed to enable
page-selective IOTLB flushes on AMD.

The patch had an embaressing bug, and I apologize for it.

Analysis as for why this bug did not result in failures raised
additional issues that caused at least most of the IOTLB flushes not to
be page-selective ones.

The first patch corrects the bug from the previous patch. The next
patches enable page-selective invalidations, which were not enabled
despite the previous patch.

Cc: Joerg Roedel <>
Cc: Will Deacon <>
Cc: Jiajun Cao <>

Nadav Amit (4):
iommu/amd: Fix wrong parentheses on page-specific invalidations
iommu/amd: Selective flush on unmap
iommu/amd: Do not sync on page size changes
iommu/amd: Do not use flush-queue when NpCache is on

drivers/iommu/amd/init.c | 7 ++++++-
drivers/iommu/amd/iommu.c | 18 +++++++++++++++---
include/linux/iommu.h | 3 ++-
3 files changed, 23 insertions(+), 5 deletions(-)


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