[Xen-devel] [PATCH 6/6] Introduce per cpu flag (iommu_dont_flush_iotlb) to avoid unnecessary iotlb flush

[Jean Guyader <jean.guyader@xxxxxxxxxxxxx>]

Add cpu flag that will be checked by the iommu low level code
to skip iotlb flushes. iommu_iotlb_flush shall be called explicitly.

Signed-off-by: Jean Guyader <jean.guyader@xxxxxxxxxxxxx>
Acked-by: Allen M Kay <allen.m.kay@xxxxxxxxx>
---
 xen/arch/x86/mm.c                   |   14 ++++++++++++++
 xen/drivers/passthrough/iommu.c     |    5 +++++
 xen/drivers/passthrough/vtd/iommu.c |    6 ++++--
 xen/include/xen/iommu.h             |   12 ++++++++++++
 4 files changed, 35 insertions(+), 2 deletions(-)

Attachment: 0006-Introduce-per-cpu-flag-iommu_dont_flush_iotlb-to-avo.patch
Description: Text Data

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