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authorSheng Yang <sheng@linux.intel.com>2009-04-27 14:35:43 +0200
committerAvi Kivity <avi@redhat.com>2009-06-10 10:48:50 +0200
commit522c68c4416de3cd3e11a9ff10d58e776a69ae1e (patch)
tree62940e35988f5e2a52df10276882ec64518ee369 /arch/ia64/include
parentKVM: Replace get_mt_mask_shift with get_mt_mask (diff)
downloadlinux-522c68c4416de3cd3e11a9ff10d58e776a69ae1e.tar.xz
linux-522c68c4416de3cd3e11a9ff10d58e776a69ae1e.zip
KVM: Enable snooping control for supported hardware
Memory aliases with different memory type is a problem for guest. For the guest without assigned device, the memory type of guest memory would always been the same as host(WB); but for the assigned device, some part of memory may be used as DMA and then set to uncacheable memory type(UC/WC), which would be a conflict of host memory type then be a potential issue. Snooping control can guarantee the cache correctness of memory go through the DMA engine of VT-d. [avi: fix build on ia64] Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/ia64/include')
-rw-r--r--arch/ia64/include/asm/kvm_host.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/ia64/include/asm/kvm_host.h b/arch/ia64/include/asm/kvm_host.h
index 589536fa799d..5f43697aed30 100644
--- a/arch/ia64/include/asm/kvm_host.h
+++ b/arch/ia64/include/asm/kvm_host.h
@@ -474,6 +474,7 @@ struct kvm_arch {
struct list_head assigned_dev_head;
struct iommu_domain *iommu_domain;
+ int iommu_flags;
struct hlist_head irq_ack_notifier_list;
unsigned long irq_sources_bitmap;