Re: [Qemu-devel] x86, nops settings result in kernel crash

2012-08-22 Thread Avi Kivity
On 08/21/2012 12:28 PM, Tomas Racek wrote: > > http://fi.muni.cz/~xracek/debian2.img.bz2 > > Other things are the same. > > The runtest.sh sets environment for xfstests and runs test 285 which I wrote > and and which should test if FS sends discard requests only on free sectors: > 285: > 1. Cre

Re: [Qemu-devel] x86, nops settings result in kernel crash

2012-08-21 Thread Tomas Racek
> On 20.08.2012 21:13, Tomas Racek wrote: > [] > Can we trim the old, large and now not-so-relevant discussion please? > ;) > > > I can provide you with more different traces if it can help. But I > > thought that maybe it will be more useful for you to try it on > > your own. So I've prepared som

Re: [Qemu-devel] x86, nops settings result in kernel crash

2012-08-21 Thread Michael Tokarev
On 20.08.2012 21:13, Tomas Racek wrote: [] Can we trim the old, large and now not-so-relevant discussion please? ;) > I can provide you with more different traces if it can help. But I thought > that maybe it will be more useful for you to try it on your own. So I've > prepared some minimal debi

Re: [Qemu-devel] x86, nops settings result in kernel crash

2012-08-20 Thread Tomas Racek
- Original Message - > On Fri, Aug 17, 2012 at 03:43:56AM -0400, Tomas Racek wrote: > > Well, I've added some debug statements to the code: > > > > void __init arch_init_ideal_nops(void) > > { > > switch (boot_cpu_data.x86_vendor) { > > case X86_VENDOR_INTEL: > >

Re: [Qemu-devel] x86, nops settings result in kernel crash

2012-08-17 Thread Borislav Petkov
On Fri, Aug 17, 2012 at 03:43:56AM -0400, Tomas Racek wrote: > Well, I've added some debug statements to the code: > > void __init arch_init_ideal_nops(void) > { > switch (boot_cpu_data.x86_vendor) { > case X86_VENDOR_INTEL: > /* > * Due to a decode

Re: [Qemu-devel] x86, nops settings result in kernel crash

2012-08-17 Thread Tomas Racek
- Original Message - > On 08/16/2012 11:53 AM, Alan Cox wrote: > >> > >> Yes, if I remove the break statement (introduced by this commit), > >> it works fine. > > > > What version of qemu is this - do we have qemu bug here I wonder. > > > > Also, is it 32 or 64 bits? It's 64-bit. Reg

Re: [Qemu-devel] x86, nops settings result in kernel crash

2012-08-16 Thread Anthony Liguori
Alan Cox writes: > On Thu, 16 Aug 2012 14:45:15 -0400 (EDT) > Tomas Racek wrote: > >> - Original Message - >> > On Thu, Aug 16, 2012 at 09:35:12AM -0400, Tomas Racek wrote: >> > > Hi, >> > > >> > > I am writing a file system test which I execute in qemu with kernel >> > > compiled from

Re: [Qemu-devel] x86, nops settings result in kernel crash

2012-08-16 Thread H. Peter Anvin
On 08/16/2012 11:53 AM, Alan Cox wrote: >> >> Yes, if I remove the break statement (introduced by this commit), it works >> fine. > > What version of qemu is this - do we have qemu bug here I wonder. > Also, is it 32 or 64 bits? -hpa

Re: [Qemu-devel] x86, nops settings result in kernel crash

2012-08-16 Thread Alan Cox
On Thu, 16 Aug 2012 14:45:15 -0400 (EDT) Tomas Racek wrote: > - Original Message - > > On Thu, Aug 16, 2012 at 09:35:12AM -0400, Tomas Racek wrote: > > > Hi, > > > > > > I am writing a file system test which I execute in qemu with kernel > > > compiled from latest git sources and running

Re: [Qemu-devel] x86, nops settings result in kernel crash

2012-08-16 Thread Tomas Racek
- Original Message - > On Thu, Aug 16, 2012 at 09:35:12AM -0400, Tomas Racek wrote: > > Hi, > > > > I am writing a file system test which I execute in qemu with kernel > > compiled from latest git sources and running it causes this error: > > > > https://bugzilla.kernel.org/show_bug.cgi?i

Re: [Qemu-devel] x86, nops settings result in kernel crash

2012-08-16 Thread Borislav Petkov
On Thu, Aug 16, 2012 at 09:35:12AM -0400, Tomas Racek wrote: > Hi, > > I am writing a file system test which I execute in qemu with kernel compiled > from latest git sources and running it causes this error: > > https://bugzilla.kernel.org/show_bug.cgi?id=45971 > > It works with v3.5, so I ran

[Qemu-devel] x86, nops settings result in kernel crash

2012-08-16 Thread Tomas Racek
Hi, I am writing a file system test which I execute in qemu with kernel compiled from latest git sources and running it causes this error: https://bugzilla.kernel.org/show_bug.cgi?id=45971 It works with v3.5, so I ran git bisect which pointed me to: d6250a3f12edb3a86db9598ffeca3de8b4a219e9 x86