iommu/vt-d: Avoid sending invalid page response

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[ Upstream commit 5f75585e19 ]

Page responses should only be sent when last page in group (LPIG) or
private data is present in the page request. This patch avoids sending
invalid descriptors.

Fixes: 5d308fc1ec ("iommu/vt-d: Add 256-bit invalidation descriptor support")
Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Jacob Pan 2020-01-02 08:18:09 +08:00 • committed by Greg Kroah-Hartman

parent 9b5b3ee264

commit dd99c14ecd

1 changed files with 3 additions and 4 deletions

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drivers/iommu/intel-svm.c

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