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[Xen-devel] [PATCH 6/6] Introduce per cpu flag (iommu_dont_flush_iotlb)

from [Jean Guyader] [Permanent Link][Original]
To: <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: [Xen-devel] [PATCH 6/6] Introduce per cpu flag (iommu_dont_flush_iotlb) to avoid unnecessary iotlb flush
From: Jean Guyader <jean.guyader@xxxxxxxxxxxxx>
Date: Mon, 7 Nov 2011 18:25:27 +0000
Cc: allen.m.kay@xxxxxxxxx, tim@xxxxxxx, Jean Guyader <jean.guyader@xxxxxxxxxxxxx>
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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>
---
 xen/arch/x86/mm.c                   |   15 ++++++++++++++-
 xen/drivers/passthrough/iommu.c     |    5 +++++
 xen/drivers/passthrough/vtd/iommu.c |    6 ++++--
 xen/include/xen/iommu.h             |    2 ++
 4 files changed, 25 insertions(+), 3 deletions(-)

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

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