From mboxrd@z Thu Jan  1 00:00:00 1970
From: Rusty Russell <rusty.russell@linaro.org>
Subject: Re: [RFC 0/5] Making KVM_GET_ONE_REG/KVM_SET_ONE_REG generic.
Date: Thu, 06 Sep 2012 11:14:09 +0930
Message-ID: <87pq60hqmu.fsf@rustcorp.com.au>
References: <877gsia8rm.fsf@rustcorp.com.au> <87627y3p1r.fsf@rustcorp.com.au> <CAFEAcA-PRvmuUzibqqd_eNVh_NDpBnFAJAO6mnU-t_ugK7dK2A@mail.gmail.com> <87ipbtj77o.fsf@rustcorp.com.au> <CAFEAcA8+AuRv=03Y_yoz8dkR7oQUPDKmr0ss7WfSL7VTSm-n5Q@mail.gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Cc: Avi Kivity <avi@redhat.com>,
	Christoffer Dall <c.dall@virtualopensystems.com>,
	Alexander Graf <agraf@suse.de>, kvmarm@lists.cs.columbia.edu,
	kvm-devel <kvm@vger.kernel.org>
To: Peter Maydell <peter.maydell@linaro.org>
Return-path: <kvm-owner@vger.kernel.org>
Received: from ozlabs.org ([203.10.76.45]:34170 "EHLO ozlabs.org"
	rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
	id S1755345Ab2IFDA4 (ORCPT <rfc822;kvm@vger.kernel.org>);
	Wed, 5 Sep 2012 23:00:56 -0400
In-Reply-To: <CAFEAcA8+AuRv=03Y_yoz8dkR7oQUPDKmr0ss7WfSL7VTSm-n5Q@mail.gmail.com>
Sender: kvm-owner@vger.kernel.org
List-ID: <kvm.vger.kernel.org>

Peter Maydell <peter.maydell@linaro.org> writes:

> On 5 September 2012 07:48, Rusty Russell <rusty@rustcorp.com.au> wrote:
>> Peter Maydell <peter.maydell@linaro.org> writes:
>>> I could live with "always read/write 64 bits". I definitely don't
>>> want to have to deal with matching up register widths to accesses
>>> in userspace, please.
>>
>> I changed my mind about the old scheme when I realized we have to deal
>> with 128-bit FPU registers.
>
> Mmm, ARM might not have any awkward size registers but there's
> x86 weirdisms to consider for a generic ABI I guess.

Actually, I hadn't realized ARM didn't do 128-bit FP regs already.

But I'd guess they'll arrive one day.

Cheers,
Rusty.