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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 14:33:14 +0100

On 6 April 2018 at 14:28,  <address@hidden> wrote:
> "Peter Maydell" <address@hidden> wrote:
>> On 5 April 2018 at 22:23,  <address@hidden> wrote:
>> > 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.
> 1. Ubuntu 17.10 is 64-bit, compilation was native, run on the
>    compilation host.  I.e., I did not cross compile to windows.
> 2. Cygwin was a 64-bit install, 64-bit windows 7 host.  I followed the
>    instructions on the wiki.  I was curious about the "ming32" part
>    myself, but cygwin package search doesn't indicate an obvious (to
>    me) replacement.

You're building your mingw32 binaries with an i686- compiler,
not an x86_64- one, so you'll end up with 32-bit Windows binaries
running on your 64-bit Windows installation.
If you have the 64-bit cross compiler and libraries for it you
could try a --cross-prefix=x86_64-w64-mingw32- build.

On this end I should try this with a 32-bit Linux host.

-- PMM

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