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DISCONTINUED:openSUSE:11.1:Update
xen
18870-vtd-flush-per-device.patch
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File 18870-vtd-flush-per-device.patch of Package xen
# HG changeset patch # User Keir Fraser <keir.fraser@citrix.com> # Date 1228474781 0 # Node ID 99f01b8184c7c16f612731e2a525687dc8d424dc # Parent 09160c3bd1797fdee111c2837f26a749e0bf9435 VT-d code cleanup This patch narrow context caching flush range from the domain-selective to the device-selective, when unmapping a device. Signed-off-by: Yu Zhao <yu.zhao@intel.com> --- a/xen/drivers/passthrough/vtd/iommu.c +++ b/xen/drivers/passthrough/vtd/iommu.c @@ -1323,7 +1323,9 @@ static int domain_context_unmap_one( context_clear_entry(*context); iommu_flush_cache_entry(context); - if ( iommu_flush_context_domain(iommu, domain_iommu_domid(domain), 0) ) + if ( iommu_flush_context_device(iommu, domain_iommu_domid(domain), + (((u16)bus) << 8) | devfn, + DMA_CCMD_MASK_NOBIT, 0) ) iommu_flush_write_buffer(iommu); else iommu_flush_iotlb_dsi(iommu, domain_iommu_domid(domain), 0);
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