[lkml]   [2017]   [Apr]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH v2 2/3] x86/mm: Make flush_tlb_mm_range() more predictable
On 04/21/2017 11:15 AM, Andy Lutomirski wrote:
> I'm about to rewrite the function almost completely, but first I
> want to get a functional change out of the way. Currently, if
> flush_tlb_mm_range() does not flush the local TLB at all, it will
> never do individual page flushes on remote CPUs. This seems to be
> an accident, and preserving it will be awkward. Let's change it
> first so that any regressions in the rewrite will be easier to
> bisect and so that the rewrite can attempt to change no visible
> behavior at all.
> The fix is simple: we can simply avoid short-circuiting the
> calculation of base_pages_to_flush.

This looks sane to me. I think it makes things more straightforward.

Acked-by: Dave Hansen <>

 \ /
  Last update: 2017-04-21 20:55    [W:0.066 / U:1.368 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site