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From: Paolo Bonzini <pbonzini@redhat.com>
To: Sean Bruno <sbruno@freebsd.org>, QEMU Developers <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] [FreeBSD] Host build i386 failing to build aarch64 targets
Date: Mon, 21 Mar 2016 10:06:37 +0100	[thread overview]
Message-ID: <56EFB99D.3040109@redhat.com> (raw)
In-Reply-To: <56EEF805.8040008@freebsd.org>



On 20/03/2016 20:20, Sean Bruno wrote:
> aarch64 targets are now failing to build on i386 hosts due to missing
> __atomic_load_8() calls since this commit:
> 
> https://github.com/qemu/qemu/commit/a0aa44b488b3601415d55041e4619aef5f3a4ba8#diff-c143d686899ae51d7b927d9c682e12fd
> 
> I'm unsure if Linux is disabling aarch64 targets for i386 hosts or if
> this commit works "just fine" on Linux hosts right now, as it doesn't
> work with clang or gcc.

Where is the relevant load in QEMU code?

x86 can actually do 64-bit atomic loads and stores through the FPU, but
I'm not sure about other 32-bit targets?

Paolo

  parent reply	other threads:[~2016-03-21  9:06 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-20 19:20 [Qemu-devel] [FreeBSD] Host build i386 failing to build aarch64 targets Sean Bruno
2016-03-20 20:03 ` Peter Maydell
2016-03-21  9:11   ` Alex Bennée
2016-03-21 14:52     ` Sean Bruno
2016-03-21 15:36       ` Alex Bennée
2016-03-21 15:56         ` Paolo Bonzini
2016-03-22 16:10           ` Sean Bruno
2016-03-22 16:22             ` Alex Bennée
2016-03-28 17:00               ` Sean Bruno
2016-03-31 16:57               ` Sean Bruno
2016-03-21  9:06 ` Paolo Bonzini [this message]
2016-03-21  9:35   ` Peter Maydell
2016-03-21 11:23     ` Paolo Bonzini
2016-03-21 11:49       ` Alex Bennée
2016-04-06 16:11 ` Sean Bruno
2016-04-06 18:51   ` Alex Bennée

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