iommu/vt-d: Allocate reserved region for ISA with correct permission

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Currently the reserved region for ISA is allocated with no
permissions. If a dma domain is being used, mapping this region will
fail. Set the permissions to DMA_PTE_READ|DMA_PTE_WRITE.

Cc: Joerg Roedel <jroedel@suse.de>
Cc: Lu Baolu <baolu.lu@linux.intel.com>
Cc: iommu@lists.linux-foundation.org
Cc: stable@vger.kernel.org # v5.3+
Fixes: d850c2ee5f ("iommu/vt-d: Expose ISA direct mapping region via iommu_get_resv_regions")
Signed-off-by: Jerry Snitselaar <jsnitsel@redhat.com>
Acked-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

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Jerry Snitselaar 2019-12-12 22:36:42 -07:00 • committed by Joerg Roedel

parent d360211524

commit cde9319e88

1 changed files with 1 additions and 1 deletions

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drivers/iommu/intel-iommu.c

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