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| author | Jon Pan-Doh <pandoh@google.com> | 2024-07-10 02:49:13 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-08-03 10:00:18 +0300 |
| commit | 133a2823a9ba23f618437257d4c1bbbabcd161f1 (patch) | |
| tree | 0a65b5c2e7d6c1d90e12bea861e36abb58edc232 /drivers/iommu/intel | |
| parent | 97204e45721f32284cd9914667e8b8a1166e6369 (diff) | |
| download | linux-133a2823a9ba23f618437257d4c1bbbabcd161f1.tar.xz | |
iommu/vt-d: Fix identity map bounds in si_domain_init()
[ Upstream commit 31000732d56b43765d51e08cccb68818fbc0032c ]
Intel IOMMU operates on inclusive bounds (both generally aas well as
iommu_domain_identity_map()). Meanwhile, for_each_mem_pfn_range() uses
exclusive bounds for end_pfn. This creates an off-by-one error when
switching between the two.
Fixes: c5395d5c4a82 ("intel-iommu: Clean up iommu_domain_identity_map()")
Signed-off-by: Jon Pan-Doh <pandoh@google.com>
Tested-by: Sudheer Dantuluri <dantuluris@google.com>
Suggested-by: Gary Zibrat <gzibrat@google.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/20240709234913.2749386-1-pandoh@google.com
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/iommu/intel')
| -rw-r--r-- | drivers/iommu/intel/iommu.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index fd11a080380c..f55ec1fd7942 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -2071,7 +2071,7 @@ static int __init si_domain_init(int hw) for_each_mem_pfn_range(i, nid, &start_pfn, &end_pfn, NULL) { ret = iommu_domain_identity_map(si_domain, mm_to_dma_pfn_start(start_pfn), - mm_to_dma_pfn_end(end_pfn)); + mm_to_dma_pfn_end(end_pfn-1)); if (ret) return ret; } |