diff options
| author | Jacob Pan <jacob.jun.pan@linux.intel.com> | 2021-03-02 02:13:59 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-14 09:50:30 +0200 |
| commit | ee06efc811eadd897ee7ab3dc44dde66235f808d (patch) | |
| tree | ec6d5d09c88388e41bea1b21c2c2d8a736db23ce /tools | |
| parent | b60e13c306884e18c17498ca62353645bced9138 (diff) | |
iommu/vt-d: Reject unsupported page request modes
[ Upstream commit 78a523fe73b81b4447beb2d6c78c9fafae24eebb ]
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: 1c4f88b7f1f92 ("iommu/vt-d: Shared virtual address in scalable mode")
Acked-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Link: https://lore.kernel.org/r/1614680040-1989-4-git-send-email-jacob.jun.pan@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'tools')
0 files changed, 0 insertions, 0 deletions