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IOMMU Fix for Linux v4.19-rc6

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One important fix:
 
 	- Fix a memory leak with AMD IOMMU when SME is active and a VM
 	  has assigned devices. In that case the complete guest memory
 	  will be leaked without this fix.
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Merge tag 'iommu-fixes-v4.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Joerg writes:
  "IOMMU Fix for Linux v4.19-rc6

   One important fix:
	- Fix a memory leak with AMD IOMMU when SME is active and a VM
	  has assigned devices. In that case the complete guest memory
	  will be leaked without this fix."

* tag 'iommu-fixes-v4.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu/amd: Clear memory encryption mask from physical address
This commit is contained in:
Greg Kroah-Hartman 2018-10-05 08:30:40 -07:00
commit b2e45b46d8
1 changed files with 1 additions and 1 deletions
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2
drivers/iommu/amd_iommu.c
View file

@ -3069,7 +3069,7 @@ static phys_addr_t amd_iommu_iova_to_phys(struct iommu_domain *dom,
return 0;
offset_mask = pte_pgsize - 1;
__pte = *pte & PM_ADDR_MASK;
__pte = __sme_clr(*pte & PM_ADDR_MASK);
return (__pte & ~offset_mask) | (iova & offset_mask);
}