From: "Alex Bennée" <alex.bennee@linaro.org>
To: Walid Ghandour <waleedjghandour@gmail.com>
Cc: qemu-devel@nongnu.org, Paolo Bonzini <pbonzini@redhat.com>,
Richard Henderson <richard.henderson@linaro.org>,
Eduardo Habkost <eduardo@habkost.net>
Subject: Re: AVX-512 instruction set
Date: Wed, 12 Apr 2023 13:13:25 +0100 [thread overview]
Message-ID: <87y1mxnvlo.fsf@linaro.org> (raw)
In-Reply-To: <CAEQMSUtx73GosLwzMLERTMkJ=eLiU5NbwZY1K0eOmFbJ-M=4Kw@mail.gmail.com>
Walid Ghandour <waleedjghandour@gmail.com> writes:
> Hello,
>
> I am interested in adding AVX512 to qemu.
(add x86 TCG maintainers to CC)
> Is anyone currently working on this ?
>
> If yes, when is it expected to be done ?
I don't think there is currently any active effort to add AVX512
support. There have been various GSoC projects to improve the x86 SIMD
emulation but I don't think they got merged.
There has been some updates to improve the SSE emulation in the last few
releases and make the instruction decoder a little easier to work wit.
>
> I was trying to run a C program and failed with the following error at this instruction:
>
> 62 f2 7d 48 18 0d fa 0c 00 00 vbroadcastss 0xcfa(%rip),%zmm1
>
> qemu: uncaught target signal 4 (Illegal instruction) - core dumped
>
> I like to add support for broadcast and fmadd avx 512 instructions such as the following one:
>
> 62 e2 7d 48 b8 c9 vfmadd231ps %zmm1,%zmm0,%zmm17
>
> Thanks,
> Walid
--
Alex Bennée
Virtualisation Tech Lead @ Linaro
next prev parent reply other threads:[~2023-04-12 12:17 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-12 9:41 AVX-512 instruction set Walid Ghandour
2023-04-12 12:13 ` Alex Bennée [this message]
2023-04-12 13:30 ` Paolo Bonzini
2023-04-12 13:41 ` Walid Ghandour
2023-04-12 13:55 ` Paolo Bonzini
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