stable inclusion
from stable-5.10.37
commit ee06efc811eadd897ee7ab3dc44dde66235f808d
bugzilla: 51868
CVE: NA

--------------------------------

[ Upstream commit 78a523fe ]

When supervisor/privilige mode SVM is used, we bind init_mm.pgd with
a supervisor PASID. There should not be any page fault for init_mm.
Execution request with DMA read is also not supported.

This patch checks PRQ descriptor for both unsupported configurations,
reject them both with invalid responses.

Fixes: 1c4f88b7 ("iommu/vt-d: Shared virtual address in scalable mode")
Acked-by: NLu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: NJacob Pan <jacob.jun.pan@linux.intel.com>
Link: https://lore.kernel.org/r/1614680040-1989-4-git-send-email-jacob.jun.pan@linux.intel.comSigned-off-by: NJoerg Roedel <jroedel@suse.de>
Signed-off-by: NSasha Levin <sashal@kernel.org>
Signed-off-by: NChen Jun <chenjun102@huawei.com>
Acked-by: NWeilong Chen <chenweilong@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>