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. Create loop

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 debian

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 some minimal

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 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. Regards, Tomas

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 decoder

[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

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 git

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?id=45971

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 tra...@redhat.com 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

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 Anthony Liguori
Alan Cox a...@lxorguk.ukuu.org.uk writes: On Thu, 16 Aug 2012 14:45:15 -0400 (EDT) Tomas Racek tra...@redhat.com 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