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amd/iommu: Fix Guest Virtual APIC Log Tail Address Register 

This register should have been programmed with the physical address
of the memory location containing the shadow tail pointer for
the guest virtual APIC log instead of the base address.

Fixes: 8bda0cfbdc  ('iommu/amd: Detect and initialize guest vAPIC log')
Signed-off-by: Filippo Sironi <sironi@amazon.de>
Signed-off-by: Wei Wang <wawei@amazon.de>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Filippo Sironi 2018-11-12 12:26:30 +00:00 committed by Joerg Roedel
parent e5b78f2e34
commit ab99be4683
1 changed files with 2 additions and 1 deletions
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3
drivers/iommu/amd_iommu_init.c
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@ -797,7 +797,8 @@ static int iommu_init_ga_log(struct amd_iommu *iommu)
entry = iommu_virt_to_phys(iommu->ga_log) | GA_LOG_SIZE_512;
memcpy_toio(iommu->mmio_base + MMIO_GA_LOG_BASE_OFFSET,
&entry, sizeof(entry));
entry = (iommu_virt_to_phys(iommu->ga_log) & 0xFFFFFFFFFFFFFULL) & ~7ULL;
entry = (iommu_virt_to_phys(iommu->ga_log_tail) &
(BIT_ULL(52)-1)) & ~7ULL;
memcpy_toio(iommu->mmio_base + MMIO_GA_LOG_TAIL_OFFSET,
&entry, sizeof(entry));
writel(0x00, iommu->mmio_base + MMIO_GA_HEAD_OFFSET);