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Re: [Qemu-devel] [PATCH] target/arm: Implement NSACR gating of floating

From: Richard Henderson
Subject: Re: [Qemu-devel] [PATCH] target/arm: Implement NSACR gating of floating point
Date: Fri, 3 May 2019 10:29:12 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1

On 5/3/19 6:13 AM, Peter Maydell wrote:
> On Sat, 13 Apr 2019 at 08:07, Richard Henderson
>> This one does do the right thing, but better to clear the bits on write to
>> NSACR.  This lets you avoid the change to fp_exception_el, and the missing
>> change to sve_exception_el.
> Hi Richard -- I was just going through the review comments on this
> patchset, and I saw this bit. Could you clarify what you mean by
> "the missing change to sve_exception_el" ? Since SVE is AArch64 only,
> there can't be any configs where we have SVE and EL3 is AArch32,
> so I don't think these two features should be able to interact.

You're right.  I'm going to assume I had been insufficiently caffeinated at the


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