Messages in this thread | | | Subject | Re: [REWORKED PATCH 1/1] iommu/vt-d: Preset Access/Dirty bits for IOVA over FL | From | Lu Baolu <> | Date | Mon, 17 May 2021 15:51:13 +0800 |
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Hi Greg,
On 5/17/21 3:27 PM, Greg KH wrote: > On Mon, May 17, 2021 at 03:17:53PM +0800, Lu Baolu wrote: >> Hi Greg, >> >> On 5/17/21 3:07 PM, Greg KH wrote: >>> On Mon, May 17, 2021 at 11:49:13AM +0800, Lu Baolu wrote: >>>> [ 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> >>>> --- >>>> drivers/iommu/intel/iommu.c | 14 ++++++++++++-- >>>> include/linux/intel-iommu.h | 2 ++ >>>> 2 files changed, 14 insertions(+), 2 deletions(-) >>>> >>>> [Note: >>>> - This is a reworked patch of >>>> https://lore.kernel.org/stable/20210512144819.664462530@linuxfoundation.org/T/#m65267f0a0091c2fcbde097cea91089775908faad. >>>> - It aims to fix a reported issue of >>>> https://bugzilla.kernel.org/show_bug.cgi?id=213077. >>>> - Please help to review and test.] >>> >>> What stable tree(s) is this supposed to be for? >> >> It's for 5.10.37. > > But the above commit is already in 5.10.y. And what about 5.11 and > 5.12, were those backports incorrect?
Above commit is now only in v5.10.37. Other 5.10.y are not impacted.
5.11 and 5.12 both have correct backports.
> > confused, > > greg k-h >
Best regards, baolu
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