Re: [PATCH 1/2] MIPS: memset.S: EVA & fault support for small_memset

2018-05-14 Thread Maciej W. Rozycki
On Mon, 16 Apr 2018, James Hogan wrote: > > @@ -260,6 +260,11 @@ > > jr ra > > andiv1, a2, STORMASK > > This patch looks good, well spotted! > > But whats that v1 write about? Any ideas? Seems to go back to the git > epoch, and $3 isn't in the clobber lists when

Re: [PATCH 1/2] MIPS: memset.S: EVA & fault support for small_memset

2018-04-17 Thread Matt Redfearn
Hi James, On 16/04/18 21:22, James Hogan wrote: On Thu, Mar 29, 2018 at 10:28:23AM +0100, Matt Redfearn wrote: @@ -260,6 +260,11 @@ jr ra andiv1, a2, STORMASK This patch looks good, well spotted! But whats that v1 write about? Any ideas? Seems to go b

Re: [PATCH 1/2] MIPS: memset.S: EVA & fault support for small_memset

2018-04-16 Thread James Hogan
On Thu, Mar 29, 2018 at 10:28:23AM +0100, Matt Redfearn wrote: > @@ -260,6 +260,11 @@ > jr ra > andiv1, a2, STORMASK This patch looks good, well spotted! But whats that v1 write about? Any ideas? Seems to go back to the git epoch, and $3 isn't in the clobber l

[PATCH 1/2] MIPS: memset.S: EVA & fault support for small_memset

2018-03-29 Thread Matt Redfearn
The MIPS kernel memset / bzero implementation includes a small_memset branch which is used when the region to be set is smaller than a long (4 bytes on 32bit, 8 bytes on 64bit). The current small_memset implementation uses a simple store byte loop to write the destination. There are 2 issues with t