From: Joerg Roedel <jroedel@suse.de>
Date: Tue, 8 Jul 2014 13:01:43 +0000 (+0200)
Subject: iommu/amd: Add pasid_state->invalid flag
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~158^2^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=53d340ef4a19ccade5305fc38808cac04861b322;p=pandora-kernel.git

iommu/amd: Add pasid_state->invalid flag

This is used to signal the ppr_notifer function that no more
faults should be processes on this pasid_state. This way we
can keep the pasid_state safely in the state-table so that
it can be freed in the amd_iommu_unbind_pasid() function.

This allows us to not hold a reference to the mm_struct
during the whole pasid-binding-time.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
Tested-by: Oded Gabbay <Oded.Gabbay@amd.com>
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