Re: [PATCH v8 5/6] powerpc/code-patching: Use temporary mm for Radix MMU

2022-10-24 Thread Christopher M. Riedl
On Mon Oct 24, 2022 at 12:17 AM CDT, Benjamin Gray wrote: > On Mon, 2022-10-24 at 14:45 +1100, Russell Currey wrote: > > On Fri, 2022-10-21 at 16:22 +1100, Benjamin Gray wrote: > > > From: "Christopher M. Riedl" > > > -%<-- > > > > > > --- > > > > Is the section following the --- your ad

Re: [PATCH v8 5/6] powerpc/code-patching: Use temporary mm for Radix MMU

2022-10-24 Thread kernel test robot
Hi Benjamin, Thank you for the patch! Yet something to improve: [auto build test ERROR on 8636df94ec917019c4cb744ba0a1f94cf9057790] url: https://github.com/intel-lab-lkp/linux/commits/Benjamin-Gray/Use-per-CPU-temporary-mappings-for-patching/20221021-133129 base: 8636df94ec917019c4cb744ba0

Re: [PATCH v8 5/6] powerpc/code-patching: Use temporary mm for Radix MMU

2022-10-23 Thread Benjamin Gray
On Mon, 2022-10-24 at 14:45 +1100, Russell Currey wrote: > On Fri, 2022-10-21 at 16:22 +1100, Benjamin Gray wrote: > > From: "Christopher M. Riedl" > > > > x86 supports the notion of a temporary mm which restricts access to > > temporary PTEs to a single CPU. A temporary mm is useful for > > situ

Re: [PATCH v8 5/6] powerpc/code-patching: Use temporary mm for Radix MMU

2022-10-23 Thread Russell Currey
On Fri, 2022-10-21 at 16:22 +1100, Benjamin Gray wrote: > From: "Christopher M. Riedl" > > x86 supports the notion of a temporary mm which restricts access to > temporary PTEs to a single CPU. A temporary mm is useful for > situations > where a CPU needs to perform sensitive operations (such as p