diff options
| author | Lu Baolu <baolu.lu@linux.intel.com> | 2021-01-15 08:42:02 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-14 09:50:33 +0200 |
| commit | 416fa531c8160151090206a51b829b9218b804d9 (patch) | |
| tree | 69c31e5fd0cd63a1d2bf6cd58013bb2b88bde13e /include/linux/genl_magic_struct.h | |
| parent | 32737c3a2669f95ec46e8711f866e050ac2b6be3 (diff) | |
iommu/vt-d: Preset Access/Dirty bits for IOVA over FL
[ Upstream commit a8ce9ebbecdfda3322bbcece6b3b25888217f8e3 ]
The Access/Dirty bits in the first level page table entry will be set
whenever a page table entry was used for address translation or write
permission was successfully translated. This is always true when using
the first-level page table for kernel IOVA. Instead of wasting hardware
cycles to update the certain bits, it's better to set them up at the
beginning.
Suggested-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20210115004202.953965-1-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include/linux/genl_magic_struct.h')
0 files changed, 0 insertions, 0 deletions