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Re: [Qemu-devel] OUT_ASM on two different systems


From: Paolo Bonzini
Subject: Re: [Qemu-devel] OUT_ASM on two different systems
Date: Tue, 19 Jul 2016 03:06:06 -0400 (EDT)

> Following are two links for trace files (out_asm log) for the same program
> using same qemu binaries on two different systems:
> Trace 1:
> https://drive.google.com/open?id=0B48wPA1x1eizdGRyQ0VsSnJVNzhDRnlMNGZ6STYwbjBzZFpJ
> 
> Trace 2:
> https://drive.google.com/open?id=0B48wPA1x1eizM3JIM0I1Z0hiNkpBREttMGxYOUI2NE1GRHEw

The most likely explanation is that the program you are running is not entirely
deterministic.

Paolo

> On Mon, Jul 18, 2016 at 2:51 PM, Ayaz Akram <address@hidden> wrote:
> 
> > Attached are two trace files (out_asm log) for the same program using same
> > qemu binaries on two different systems .
> >
> >
> >
> >
> >
> > On Sun, Jul 17, 2016 at 3:25 AM, Paolo Bonzini <address@hidden>
> > wrote:
> >
> >>
> >>
> >> On 17/07/2016 04:06, Ayaz Akram wrote:
> >> > Hi all !
> >> >
> >> > I ran a program with qemu in user mode emulation and generated trace for
> >> > generated host instructions using (-d OUT_ASM) on two different linux
> >> > systems.I expected that the addresses in two trace files can be
> >> different.
> >> > But the total number of lines in two files is different as well. I mean
> >> the
> >> > generated host instructions in two files are different (I have not yet
> >> > looked into details of those differenes). Qemu and program's binary are
> >> > exactly same on both systems. I wonder if someone can help me in
> >> explaining
> >> > this ?
> >> >
> >> > Thanks for your time !
> >> >
> >>
> >> It's difficult to answer your question without also seeing an example of
> >> those differences.
> >>
> >> Paolo
> >>
> >
> >
> 



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