Re: powerpc/mm/nohash: do not flush the entire mm when range is a single page

On Tue, 2018-01-23 at 13:22:50 UTC, Christophe Leroy wrote:

Most of the time, flush_tlb_range() is called on single pages.
At the time being, flush_tlb_range() inconditionnaly calls
flush_tlb_mm() which flushes at least the entire PID pages and on
older CPUs like 4xx or 8xx it flushes the entire TLB table.

This patch calls flush_tlb_page() instead of flush_tlb_mm() when
the range is a single page.

Signed-off-by: Christophe Leroy <redacted>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/5c8136fa1af7c0e9b4aec89cf2832f

cheers