* [PATCH] scripts/runqemu-internal: Work around qemux86 PAT bugs in linux 4.4.1
@ 2016-02-12 18:00 Richard Purdie
2016-02-12 22:04 ` Bruce Ashfield
0 siblings, 1 reply; 3+ messages in thread
From: Richard Purdie @ 2016-02-12 18:00 UTC (permalink / raw)
To: openembedded-core; +Cc: Ashfield, Bruce, saul.wold
Since the upgrade of qemux86 to 4.4.1 we're seeing PAT issues when
starting the X server. We need to fix the problem but the failing
sanity tests mask out other issues and we need a workaround.
Merge this for now until we can figure out the full issue. This is
better than changing the kernel defconfig or reverting to old
kernel versions.
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
diff --git a/scripts/runqemu-internal b/scripts/runqemu-internal
index ebed2bd..ad854d1 100755
--- a/scripts/runqemu-internal
+++ b/scripts/runqemu-internal
@@ -434,7 +434,7 @@ if [ "$MACHINE" = "qemux86" ]; then
fi
# Currently oprofile's event based interrupt mode doesn't work(Bug #828) in
# qemux86 and qemux86-64. We can use timer interrupt mode for now.
- KERNCMDLINE="$KERNCMDLINE oprofile.timer=1"
+ KERNCMDLINE="$KERNCMDLINE oprofile.timer=1 nopat"
fi
if [ "$MACHINE" = "qemux86-64" ]; then
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] scripts/runqemu-internal: Work around qemux86 PAT bugs in linux 4.4.1
2016-02-12 18:00 [PATCH] scripts/runqemu-internal: Work around qemux86 PAT bugs in linux 4.4.1 Richard Purdie
@ 2016-02-12 22:04 ` Bruce Ashfield
2016-02-13 8:10 ` Richard Purdie
0 siblings, 1 reply; 3+ messages in thread
From: Bruce Ashfield @ 2016-02-12 22:04 UTC (permalink / raw)
To: Richard Purdie, openembedded-core; +Cc: saul.wold
On 2016-02-12 1:00 PM, Richard Purdie wrote:
> Since the upgrade of qemux86 to 4.4.1 we're seeing PAT issues when
> starting the X server. We need to fix the problem but the failing
> sanity tests mask out other issues and we need a workaround.
>
I was out of the day and didn't notice if any logs were available
for the issue ? Is there a pointer to the failing logs ?
Obviously I didn't notice this in any of my runs. I'll check 4.4.x
for anything that looks suspicious, and can bisect if needed.
Bruce
> Merge this for now until we can figure out the full issue. This is
> better than changing the kernel defconfig or reverting to old
> kernel versions.
>
> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
>
> diff --git a/scripts/runqemu-internal b/scripts/runqemu-internal
> index ebed2bd..ad854d1 100755
> --- a/scripts/runqemu-internal
> +++ b/scripts/runqemu-internal
> @@ -434,7 +434,7 @@ if [ "$MACHINE" = "qemux86" ]; then
> fi
> # Currently oprofile's event based interrupt mode doesn't work(Bug #828) in
> # qemux86 and qemux86-64. We can use timer interrupt mode for now.
> - KERNCMDLINE="$KERNCMDLINE oprofile.timer=1"
> + KERNCMDLINE="$KERNCMDLINE oprofile.timer=1 nopat"
> fi
>
> if [ "$MACHINE" = "qemux86-64" ]; then
>
>
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] scripts/runqemu-internal: Work around qemux86 PAT bugs in linux 4.4.1
2016-02-12 22:04 ` Bruce Ashfield
@ 2016-02-13 8:10 ` Richard Purdie
0 siblings, 0 replies; 3+ messages in thread
From: Richard Purdie @ 2016-02-13 8:10 UTC (permalink / raw)
To: Bruce Ashfield, openembedded-core; +Cc: saul.wold
On Fri, 2016-02-12 at 17:04 -0500, Bruce Ashfield wrote:
> On 2016-02-12 1:00 PM, Richard Purdie wrote:
> > Since the upgrade of qemux86 to 4.4.1 we're seeing PAT issues when
> > starting the X server. We need to fix the problem but the failing
> > sanity tests mask out other issues and we need a workaround.
> >
>
> I was out of the day and didn't notice if any logs were available
> for the issue ? Is there a pointer to the failing logs ?
>
> Obviously I didn't notice this in any of my runs. I'll check 4.4.x
> for anything that looks suspicious, and can bisect if needed.
Your inbox should have details of it under "poky: update qemu* to
prefer 4.4 kernel", the logs are in there. There was a promising
looking patch upstream but it didn't help.
It reproduced easily with a "MACHINE=qemux86 bitbake core-image-sato;
runqemu qemux86" and then watch X fail to start.
It also looks like we have a new perf race:
https://autobuilder.yoctoproject.org/main/builders/nightly-x86-64/build
s/657/steps/BuildImages/logs/stdio
Cheers,
Richard
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2016-02-13 8:10 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-02-12 18:00 [PATCH] scripts/runqemu-internal: Work around qemux86 PAT bugs in linux 4.4.1 Richard Purdie
2016-02-12 22:04 ` Bruce Ashfield
2016-02-13 8:10 ` Richard Purdie
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.