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iommu/vt-d: Enable QI on all IOMMUs before setting root entry
authorJoerg Roedel <jroedel@suse.de>
Fri, 17 Jun 2016 09:29:48 +0000 (11:29 +0200)
committerJoerg Roedel <jroedel@suse.de>
Fri, 17 Jun 2016 09:29:48 +0000 (11:29 +0200)
commita4c34ff1c029e90e7d5f8dd8d29b0a93b31c3cb2
treeb26a1e874183542f533890334a5bfc55d7ef8106tree | snapshot (tar.gz zip)
parentae8a7910fb0568531033bd6ebe65590f7a4fa6e2commit | diff
iommu/vt-d: Enable QI on all IOMMUs before setting root entry

This seems to be required on some X58 chipsets on systems
with more than one IOMMU. QI does not work until it is
enabled on all IOMMUs in the system.

Reported-by: Dheeraj CVR <cvr.dheeraj@gmail.com>
Tested-by: Dheeraj CVR <cvr.dheeraj@gmail.com>
Fixes: 5f0a7f7614a9 ('iommu/vt-d: Make root entry visible for hardware right after allocation')
Cc: stable@vger.kernel.org
Signed-off-by: Joerg Roedel <jroedel@suse.de>
drivers/iommu/intel-iommu.c diff | blob | blame | history