Re: [RFC PATCH v2 11/11] powerpc/book3s32: Implement Kernel Userspace Access Protection

2018-12-11 Thread Christophe Leroy
On 12/11/2018 05:25 AM, Russell Currey wrote: On Wed, 2018-11-28 at 09:27 +, Christophe Leroy wrote: This patch implements Kernel Userspace Access Protection for book3s/32. Due to limitations of the processor page protection capabilities, the protection is only against writing. read

Re: [RFC PATCH v2 11/11] powerpc/book3s32: Implement Kernel Userspace Access Protection

2018-12-10 Thread Russell Currey
On Wed, 2018-11-28 at 09:27 +, Christophe Leroy wrote: > This patch implements Kernel Userspace Access Protection for > book3s/32. > > Due to limitations of the processor page protection capabilities, > the protection is only against writing. read protection cannot be > achieved using page