Re: [RFC PATCH 3/3] powerpc/lib: Use a temporary mm for code patching

> On April 15, 2020 3:45 AM Christophe Leroy wrote: > > > Le 15/04/2020 à 07:11, Christopher M Riedl a écrit : > >> On March 24, 2020 11:25 AM Christophe Leroy > >> wrote: > >> > >> > >> Le 23/03/2020 à 05:52, Christopher M. Riedl a écrit : > >>> Currently, code patching a STRICT_KERNEL_RW

Re: [RFC PATCH 3/3] powerpc/lib: Use a temporary mm for code patching

Le 15/04/2020 à 07:11, Christopher M Riedl a écrit : On March 24, 2020 11:25 AM Christophe Leroy wrote: Le 23/03/2020 à 05:52, Christopher M. Riedl a écrit : Currently, code patching a STRICT_KERNEL_RWX exposes the temporary mappings to other CPUs. These mappings should be kept local to

Re: [RFC PATCH 3/3] powerpc/lib: Use a temporary mm for code patching

> On March 24, 2020 11:25 AM Christophe Leroy wrote: > > > Le 23/03/2020 à 05:52, Christopher M. Riedl a écrit : > > Currently, code patching a STRICT_KERNEL_RWX exposes the temporary > > mappings to other CPUs. These mappings should be kept local to the CPU > > doing the patching. Use the pre-

Re: [RFC PATCH 3/3] powerpc/lib: Use a temporary mm for code patching

Le 23/03/2020 à 05:52, Christopher M. Riedl a écrit : Currently, code patching a STRICT_KERNEL_RWX exposes the temporary mappings to other CPUs. These mappings should be kept local to the CPU doing the patching. Use the pre-initialized temporary mm and patching address for this purpose. Also a