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Re: [Qemu-devel] Regression with commit 095497ffc66b7f031
From: |
Gerd Hoffmann |
Subject: |
Re: [Qemu-devel] Regression with commit 095497ffc66b7f031 |
Date: |
Fri, 15 Jul 2016 12:12:48 +0200 |
On Fr, 2016-07-15 at 12:02 +0200, Paolo Bonzini wrote:
>
> On 15/07/2016 10:47, Juergen Gross wrote:
> > Nothing scaring and no real difference between working and not working
> > variant.
> >
> > Meanwhile I've been digging a little bit deeper and found the reason:
> > libxenstore is setting up a reader thread which is waiting for the
> > watch to fire. With above commit the stack size of that thread (16kB)
> > is too small. Setting it to 32kB made qemu work again.
>
> This makes very little sense (not your fault)... The commit doesn't
> change stack usage at all, TLS should not be on the stack.
>
> Can you capture a backtrace where the 16K stack is exceeded? Perhaps
> it's only due to inlining decision on the compiler, in which case
> Peter's patch from today is only a bandaid.
Hmm, I guess I hold off the vnc pull request for now ...
cheers,
Gerd
- [Qemu-devel] Regression with commit 095497ffc66b7f031, Juergen Gross, 2016/07/15
- Re: [Qemu-devel] Regression with commit 095497ffc66b7f031, Peter Lieven, 2016/07/15
- Re: [Qemu-devel] Regression with commit 095497ffc66b7f031, Juergen Gross, 2016/07/15
- Re: [Qemu-devel] Regression with commit 095497ffc66b7f031, Paolo Bonzini, 2016/07/15
- Re: [Qemu-devel] Regression with commit 095497ffc66b7f031, Peter Lieven, 2016/07/15
- Re: [Qemu-devel] Regression with commit 095497ffc66b7f031, Paolo Bonzini, 2016/07/15
- Re: [Qemu-devel] Regression with commit 095497ffc66b7f031, Peter Lieven, 2016/07/15
- Re: [Qemu-devel] Regression with commit 095497ffc66b7f031,
Gerd Hoffmann <=
- Re: [Qemu-devel] Regression with commit 095497ffc66b7f031, Paolo Bonzini, 2016/07/15
- Re: [Qemu-devel] Regression with commit 095497ffc66b7f031, Juergen Gross, 2016/07/15
- Re: [Qemu-devel] Regression with commit 095497ffc66b7f031, Paolo Bonzini, 2016/07/15
- Re: [Qemu-devel] [Xen-devel] Regression with commit 095497ffc66b7f031, Juergen Gross, 2016/07/15