diff options
| author | Lu Baolu <baolu.lu@linux.intel.com> | 2019-05-02 09:34:25 +0800 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2019-05-03 17:31:32 +0200 |
| commit | cf1ec4539a50bdfe688caad4615ca47646884316 (patch) | |
| tree | 405dc1e48cfd537083692f94bf6566b86b08d2a6 /drivers/iommu | |
| parent | 095303e0eb566e408435ef1cfa25aef2af2e403e (diff) | |
| download | linux-cf1ec4539a50bdfe688caad4615ca47646884316.tar.gz | |
iommu/vt-d: Set intel_iommu_gfx_mapped correctly
The intel_iommu_gfx_mapped flag is exported by the Intel
IOMMU driver to indicate whether an IOMMU is used for the
graphic device. In a virtualized IOMMU environment (e.g.
QEMU), an include-all IOMMU is used for graphic device.
This flag is found to be clear even the IOMMU is used.
Cc: Ashok Raj <ashok.raj@intel.com>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: Kevin Tian <kevin.tian@intel.com>
Reported-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Fixes: c0771df8d5297 ("intel-iommu: Export a flag indicating that the IOMMU is used for iGFX.")
Suggested-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/intel-iommu.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index de47bdb57e48..a814c95f73ce 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -4053,9 +4053,7 @@ static void __init init_no_remapping_devices(void) /* This IOMMU has *only* gfx devices. Either bypass it or set the gfx_mapped flag, as appropriate */ - if (dmar_map_gfx) { - intel_iommu_gfx_mapped = 1; - } else { + if (!dmar_map_gfx) { drhd->ignored = 1; for_each_active_dev_scope(drhd->devices, drhd->devices_cnt, i, dev) @@ -4894,6 +4892,9 @@ int __init intel_iommu_init(void) goto out_free_reserved_range; } + if (dmar_map_gfx) + intel_iommu_gfx_mapped = 1; + init_no_remapping_devices(); ret = init_dmars(); |