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| author | Baoquan He <bhe@redhat.com> | 2017-08-09 16:33:43 +0800 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2017-08-15 18:14:41 +0200 |
| commit | daae2d25a4779b272a66ddd01f5810bcee822b9e (patch) | |
| tree | 739b63a3bdaf1d65e4edc17681637e0b2bf39a69 /drivers/iommu/amd_iommu_proto.h | |
| parent | b336781b82cc12c7940a2b1c806fbe7f78ecd72a (diff) | |
| download | linux-daae2d25a4779b272a66ddd01f5810bcee822b9e.tar.gz linux-daae2d25a4779b272a66ddd01f5810bcee822b9e.tar.bz2 linux-daae2d25a4779b272a66ddd01f5810bcee822b9e.zip | |
iommu/amd: Don't copy GCR3 table root pointer
When iommu is pre_enabled in kdump kernel, if a device is set up with
guest translations (DTE.GV=1), then don't copy GCR3 table root pointer
but move the device over to an empty guest-cr3 table and handle the
faults in the PPR log (which answer them with INVALID). After all these
PPR faults are recoverable for the device and we should not allow the
device to change old-kernels data when we don't have to.
Signed-off-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/amd_iommu_proto.h')
| -rw-r--r-- | drivers/iommu/amd_iommu_proto.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/iommu/amd_iommu_proto.h b/drivers/iommu/amd_iommu_proto.h index a9666d2005bb..90e62e9b01c5 100644 --- a/drivers/iommu/amd_iommu_proto.h +++ b/drivers/iommu/amd_iommu_proto.h @@ -88,4 +88,5 @@ static inline bool iommu_feature(struct amd_iommu *iommu, u64 f) } extern bool translation_pre_enabled(struct amd_iommu *iommu); +extern struct iommu_dev_data *get_dev_data(struct device *dev); #endif /* _ASM_X86_AMD_IOMMU_PROTO_H */ |