diff options
| 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.c | |
| parent | b336781b82cc12c7940a2b1c806fbe7f78ecd72a (diff) | |
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.c')
| -rw-r--r-- | drivers/iommu/amd_iommu.c | 28 |
1 files changed, 3 insertions, 25 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index eebf4590cef9..9e8ea1907796 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -103,30 +103,6 @@ int amd_iommu_max_glx_val = -1; static const struct dma_map_ops amd_iommu_dma_ops; /* - * This struct contains device specific data for the IOMMU - */ -struct iommu_dev_data { - struct list_head list; /* For domain->dev_list */ - struct list_head dev_data_list; /* For global dev_data_list */ - struct protection_domain *domain; /* Domain the device is bound to */ - u16 devid; /* PCI Device ID */ - u16 alias; /* Alias Device ID */ - bool iommu_v2; /* Device can make use of IOMMUv2 */ - bool passthrough; /* Device is identity mapped */ - struct { - bool enabled; - int qdep; - } ats; /* ATS state */ - bool pri_tlp; /* PASID TLB required for - PPR completions */ - u32 errata; /* Bitmap for errata to apply */ - bool use_vapic; /* Enable device to use vapic mode */ - bool defer_attach; - - struct ratelimit_state rs; /* Ratelimit IOPF messages */ -}; - -/* * general struct to manage commands send to an IOMMU */ struct iommu_cmd { @@ -386,10 +362,11 @@ static struct iommu_dev_data *find_dev_data(u16 devid) return dev_data; } -static struct iommu_dev_data *get_dev_data(struct device *dev) +struct iommu_dev_data *get_dev_data(struct device *dev) { return dev->archdata.iommu; } +EXPORT_SYMBOL(get_dev_data); /* * Find or create an IOMMU group for a acpihid device. @@ -2540,6 +2517,7 @@ static int dir2prot(enum dma_data_direction direction) else return 0; } + /* * This function contains common code for mapping of a physically * contiguous memory region into DMA address space. It is used by all |