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| author | Joerg Roedel <joerg.roedel@amd.com> | 2008-09-11 10:24:48 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-09-19 12:59:21 +0200 |
| commit | bd60b735c658e6e8c656e89771d281bcfcf51279 (patch) | |
| tree | 3587d684e56ed7e057d30b022fa1985990a08939 /include | |
| parent | b39ba6ad004a31bf2a08ba2b08c1e0f9b3530bb7 (diff) | |
| download | op-kernel-dev-bd60b735c658e6e8c656e89771d281bcfcf51279.zip op-kernel-dev-bd60b735c658e6e8c656e89771d281bcfcf51279.tar.gz | |
AMD IOMMU: don't assign preallocated protection domains to devices
In isolation mode the protection domains for the devices are
preallocated and preassigned. This is bad if a device should be passed
to a virtualization guest because the IOMMU code does not know if it is
in use by a driver. This patch changes the code to assign the device to
the preallocated domain only if there are dma mapping requests for it.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-x86/amd_iommu_types.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/asm-x86/amd_iommu_types.h b/include/asm-x86/amd_iommu_types.h index d8c5a6c..9aa22ea 100644 --- a/include/asm-x86/amd_iommu_types.h +++ b/include/asm-x86/amd_iommu_types.h @@ -227,6 +227,12 @@ struct dma_ops_domain { /* This will be set to true when TLB needs to be flushed */ bool need_flush; + + /* + * if this is a preallocated domain, keep the device for which it was + * preallocated in this variable + */ + u16 target_dev; }; /* |
