Messages in this thread | | | Date | Wed, 19 Mar 2014 14:30:30 +0100 | From | Peter Zijlstra <> | Subject | Re: [PATCH 29/31] arch,xtensa: Convert smp_mb__* |
| |
On Wed, Mar 19, 2014 at 05:11:34PM +0400, Max Filippov wrote: > Hi Peter, > > On Wed, Mar 19, 2014 at 10:47 AM, Peter Zijlstra <peterz@infradead.org> wrote: > > Xtensa SMP has ll/sc which is fully serializing, therefore its exising > > One minor correction: current xtensa ISA doens't have ll/sc, it only > has cas (s32c1i instruction), which is fully serializing.
Oh; my bad in reading your asm. The l32i and s32cli read like a load 32 and store 32 conditional to me. But sure, cas works too :-)
I'll ammend the changelog. Thanks!
| |