[PATCH][AArch64] Adjust writeback in non-zero memset

[Siddhesh Poyarekar]

On 14/11/18 8:15 PM, Wilco Dijkstra wrote:
> v2: Also bias dst in the zva_other code to avoid issues with zva sizes >= 256.
> 
> This fixes an ineffiency in the non-zero memset.  Delaying the writeback
> until the end of the loop is slightly faster on some cores - this shows
> ~5% performance gain on Cortex-A53 when doing large non-zero memsets.
> 
> Tested against the GLIBC testsuite, OK for commit?

Can you please also summarize the performance results for other processors?

Thanks,
Siddhesh