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

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[ Upstream commit ab99be4683 ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Filippo Sironi
2018-11-12 12:26:30 +00:00
committed by Greg Kroah-Hartman
parent 2761d32371
commit 41cb057690
1 changed files with 2 additions and 1 deletions
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3
drivers/iommu/amd_iommu_init.c
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@@ -796,7 +796,8 @@ 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);