"Aneesh Kumar K.V" <aneesh.ku...@linux.vnet.ibm.com> writes:
> On Tuesday 14 February 2017 11:19 AM, Michael Ellerman wrote: >> "Aneesh Kumar K.V" <aneesh.ku...@linux.vnet.ibm.com> writes: >> >>> Autonuma preserves the write permission across numa fault to avoid taking >>> a writefault after a numa fault (Commit: b191f9b106ea " mm: numa: preserve >>> PTE >>> write permissions across a NUMA hinting fault"). Architecture can implement >>> protnone in different ways and some may choose to implement that by >>> clearing Read/ >>> Write/Exec bit of pte. Setting the write bit on such pte can result in wrong >>> behaviour. Fix this up by allowing arch to override how to save the write >>> bit >>> on a protnone pte. >> This is pretty obviously a nop on arches that don't implement the new >> hooks, but it'd still be good to get an ack from someone in mm land >> before I merge it. > > > To get it apply cleanly you may need > http://ozlabs.org/~akpm/mmots/broken-out/mm-autonuma-dont-use-set_pte_at-when-updating-protnone-ptes.patch > http://ozlabs.org/~akpm/mmots/broken-out/mm-autonuma-dont-use-set_pte_at-when-updating-protnone-ptes-fix.patch Ah OK, I missed those. In that case these two should probably go via Andrew's tree. cheers
