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Re: [Qemu-devel] -icount changes physical address assignments in QEMU 2.
From: |
Peter Maydell |
Subject: |
Re: [Qemu-devel] -icount changes physical address assignments in QEMU 2.10/2.11 |
Date: |
Fri, 6 Apr 2018 10:41:01 +0100 |
On 5 April 2018 at 22:23, <address@hidden> wrote:
> "Peter Maydell" <address@hidden> wrote on 04/05/2018 12:28:01
> PM:
>
>> From: "Peter Maydell" <address@hidden>
>> To: address@hidden
>> Cc: "QEMU Developers" <address@hidden>
>> Date: 04/05/2018 12:28 PM
>> Subject: Re: [Qemu-devel] -icount changes physical address assignments
> in QEMU 2.10/2.11
>>
>> On 5 April 2018 at 17:44, <address@hidden> wrote:
>> > "Peter Maydell" <address@hidden> wrote on 04/05/2018
> 09:05:53
>> > AM:
>> >> I've just tried your attached test image ...
>> >
>> > Curious. I just downloaded qemu-2.12.0-rc2.tar.xz and built it using
>> > Cygwin (a version from about a month ago) using mingw compilers
>> > (mingw64-i686-gcc-g++ 6.4.0), and I still see the issue when the
>> > resulting QEMU binary is run using -icount 2 against my test binary,
>> > but not when run without -icount. Here are the commands used:
>> >
>> > ../qemu-2.12.0-rc2/configure --python=/usr/bin/python \
>> > '--with-pkgversion=DDCI QEMU 2.12.0-rc2' \
>> > --prefix=/usr/local/qemu \
>> > --enable-sdl --with-sdlabi=2.0 \
>> > '--target-list=aarch64-softmmu ppc64-softmmu x86_64-softmmu' \
>> > --cross-prefix=i686-w64-mingw32-
>> > /usr/bin/make -Otarget -j 8
>> >
>> > Any suggestions of things to try?
>>
>> Can you reproduce the problem on a Linux host? It would
>> be interesting to identify if this is a Windows-host
>> specific issue somehow.
>
> Linux "works". I installed ubuntu 17.10 in a VM on my windows box,
> recompiled QEMU 2.12.0-rc2 (same sources as above), using a configure
> line the same as above except omitting --cross-prefix and --with-sdlabi.
> Both with "-icount 2" and without show expected results.
>
> I installed a fresh Cygwin with just the packages suggested at
> https://wiki.qemu.org/Hosts/W32#Native_builds_with_Mingw-w64 (plus
> some obviously missing ones like python, make, etc.) and the problem
> persists. The updated configure line is:
>
> ../qemu-2.12.0-rc2/configure \
> '--with-pkgversion=DDCI QEMU 2.12.0-rc2' \
> --prefix=/usr/local/qemu \
> '--target-list=aarch64-softmmu ppc64-softmmu x86_64-softmmu' \
> --cross-prefix=i686-w64-mingw32-
Hmm, if it's Windows-only that's unfortunate, since I'm not really
in a position to debug things that only happon on Windows hosts.
Stefan, does this sort of bug sound familiar at all?
Looking at your --cross-prefix you seem to be building 32-bit
binaries; was your Ubuntu VM 32 bit or 64 bit? I'm wondering
if this might turn out to be a 32-bit host issue rather than
necessarily a Windows one.
thanks
-- PMM
- Re: [Qemu-devel] -icount changes physical address assignments in QEMU 2.10/2.11, Peter Maydell, 2018/04/05
- Re: [Qemu-devel] -icount changes physical address assignments in QEMU 2.10/2.11, alarson, 2018/04/05
- Re: [Qemu-devel] -icount changes physical address assignments in QEMU 2.10/2.11, Peter Maydell, 2018/04/05
- Re: [Qemu-devel] -icount changes physical address assignments in QEMU 2.10/2.11, alarson, 2018/04/05
- Re: [Qemu-devel] -icount changes physical address assignments in QEMU 2.10/2.11,
Peter Maydell <=
- Re: [Qemu-devel] -icount changes physical address assignments in QEMU 2.10/2.11, Stefan Weil, 2018/04/06
- Re: [Qemu-devel] -icount changes physical address assignments in QEMU 2.10/2.11, alarson, 2018/04/06
- Re: [Qemu-devel] -icount changes physical address assignments in QEMU 2.10/2.11, Peter Maydell, 2018/04/06
- Re: [Qemu-devel] -icount changes physical address assignments in QEMU 2.10/2.11, Peter Maydell, 2018/04/06
- Re: [Qemu-devel] -icount changes physical address assignments in QEMU 2.10/2.11, Peter Maydell, 2018/04/06
- Re: [Qemu-devel] -icount changes physical address assignments in QEMU 2.10/2.11, alarson, 2018/04/06
- Re: [Qemu-devel] -icount changes physical address assignments in QEMU 2.10/2.11, Peter Maydell, 2018/04/06
- Re: [Qemu-devel] -icount changes physical address assignments in QEMU 2.10/2.11, alarson, 2018/04/06
- Re: [Qemu-devel] -icount changes physical address assignments in QEMU 2.10/2.11, Mark Cave-Ayland, 2018/04/06
- Re: [Qemu-devel] -icount changes physical address assignments in QEMU 2.10/2.11, alarson, 2018/04/06