[lkml]   [2020]   [May]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH v6 2/4] mm/memory.c: Update local TLB if PTE entry exists
On Mon, 25 May 2020 10:52:38 +0800 Bibo Mao <> wrote:

> If two threads concurrently fault at the same page, the thread that
> won the race updates the PTE and its local TLB. For now, the other
> thread gives up, simply does nothing, and continues.
> It could happen that this second thread triggers another fault, whereby
> it only updates its local TLB while handling the fault. Instead of
> triggering another fault, let's directly update the local TLB of the
> second thread. Function update_mmu_tlb is used here to update local
> TLB on the second thread, and it is defined as empty on other arches.

Acked-by: Andrew Morton <>

Thanks for persisting with these.

 \ /
  Last update: 2020-05-25 23:43    [W:0.086 / U:18.268 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site