lkml.org 
[lkml]   [2019]   [Apr]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v12 04/31] arm64/mm: define ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT
On Tue, Apr 16, 2019 at 03:41:56PM +0100, Mark Rutland wrote:
> On Tue, Apr 16, 2019 at 04:31:27PM +0200, Laurent Dufour wrote:
> > Le 16/04/2019 à 16:27, Mark Rutland a écrit :
> > > On Tue, Apr 16, 2019 at 03:44:55PM +0200, Laurent Dufour wrote:
> > > > From: Mahendran Ganesh <opensource.ganesh@gmail.com>
> > > >
> > > > Set ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT for arm64. This
> > > > enables Speculative Page Fault handler.
> > > >
> > > > Signed-off-by: Ganesh Mahendran <opensource.ganesh@gmail.com>
> > >
> > > This is missing your S-o-B.
> >
> > You're right, I missed that...
> >
> > > The first patch noted that the ARCH_SUPPORTS_* option was there because
> > > the arch code had to make an explicit call to try to handle the fault
> > > speculatively, but that isn't addeed until patch 30.
> > >
> > > Why is this separate from that code?
> >
> > Andrew was recommended this a long time ago for bisection purpose. This
> > allows to build the code with CONFIG_SPECULATIVE_PAGE_FAULT before the code
> > that trigger the spf handler is added to the per architecture's code.
>
> Ok. I think it would be worth noting that in the commit message, to
> avoid anyone else asking the same question. :)

Should have read this thread before looking at x86 and ppc :)

In any case the patch is:

Reviewed-by: Jérôme Glisse <jglisse@redhat.com>

\
 
 \ /
  Last update: 2019-04-18 23:52    [W:0.166 / U:1.196 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site