[PATCH v5 16/23] powerpc/book3s64/kuap: Restrict access to userspace based on userspace AMR

[Sandipan Das]

On 27/08/20 9:39 am, Aneesh Kumar K.V wrote:
> If an application has configured address protection such that read/write is
> denied using pkey even the kernel should receive a FAULT on accessing the same.
> 
> This patch use user AMR value stored in pt_regs.kuap to achieve the same.
> 
> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar at linux.ibm.com>
> ---
>  arch/powerpc/include/asm/book3s/64/kup.h | 12 +++++++++---
>  1 file changed, 9 insertions(+), 3 deletions(-)
> 

Reviewed-by: Sandipan Das <sandipan at linux.ibm.com>