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[Xen-changelog] [xen-unstable] VT-d code cleanup
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| Subject: | [Xen-changelog] [xen-unstable] VT-d code cleanup |
| From: | Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx> |
| Date: | Sat, 06 Dec 2008 04:20:36 -0800 |
| Delivery-date: | Sat, 06 Dec 2008 04:22:47 -0800 |
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# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# 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@xxxxxxxxx>
---
xen/drivers/passthrough/vtd/iommu.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletion(-)
diff -r 09160c3bd179 -r 99f01b8184c7 xen/drivers/passthrough/vtd/iommu.c
--- a/xen/drivers/passthrough/vtd/iommu.c Fri Dec 05 15:47:19 2008 +0900
+++ b/xen/drivers/passthrough/vtd/iommu.c Fri Dec 05 10:59:41 2008 +0000
@@ -1308,7 +1308,9 @@ 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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