lkml.org 
[lkml]   [2019]   [Feb]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH] powerpc: fix 32-bit KVM-PR lockup and panic with MacOS guest
From
Date
On Fri, 2019-02-08 at 14:51 +0000, Mark Cave-Ayland wrote:
>
> Indeed, but there are still some questions to be asked here:
>
> 1) Why were these bits removed from the original bitmask in the first place without
> it being documented in the commit message?
>
> 2) Is this the right fix? I'm told that MacOS guests already run without this patch
> on a G5 under 64-bit KVM-PR which may suggest that this is a workaround for another
> bug elsewhere in the 32-bit powerpc code.
>
>
> If you think that these points don't matter, then I'm happy to resubmit the patch
> as-is based upon your comments above.

We should write a test case to verify that FE0/FE1 are properly
preserved/context-switched etc... I bet if we accidentally wiped them,
we wouldn't notice 99.9% of the time.

Cheers,
Ben.

\
 
 \ /
  Last update: 2019-02-11 02:20    [W:0.177 / U:0.036 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site