diff options
| author | Lu Baolu <baolu.lu@linux.intel.com> | 2019-03-20 09:58:33 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-04-27 09:33:57 +0200 |
| commit | 158c4cb0d6866f65d6416ae66876a59f8f992c55 (patch) | |
| tree | 1b7503e14d57ab0c96ae3cc6579fcaf8d73b7a00 /arch/ia64 | |
| parent | 1a883611e2f282af13bf0baa2bb35a9301d01b55 (diff) | |
iommu/vt-d: Check capability before disabling protected memory
[ Upstream commit 5bb71fc790a88d063507dc5d445ab8b14e845591 ]
The spec states in 10.4.16 that the Protected Memory Enable
Register should be treated as read-only for implementations
not supporting protected memory regions (PLMR and PHMR fields
reported as Clear in the Capability register).
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: mark gross <mgross@intel.com>
Suggested-by: Ashok Raj <ashok.raj@intel.com>
Fixes: f8bab73515ca5 ("intel-iommu: PMEN support")
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>
Diffstat (limited to 'arch/ia64')
0 files changed, 0 insertions, 0 deletions