Re: [PATCH v2] powerpc/64s/radix: do not flush TLB when relaxing access

2018-05-21 Thread kbuild test robot
Hi Nicholas, I love your patch! Yet something to improve: [auto build test ERROR on v4.17-rc6] [cannot apply to powerpc/next next-20180517] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Nichol

Re: [PATCH v2] powerpc/64s/radix: do not flush TLB when relaxing access

2018-05-20 Thread Aneesh Kumar K.V
Nicholas Piggin writes: > Radix flushes the TLB when updating ptes to increase permissiveness > of protection (increase access authority). Book3S does not require > TLB flushing in this case, and it is not done on hash. This patch > avoids the flush for radix. > > From Power ISA v3.0B, p.1090: >