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Re: [Qemu-devel] [PATCH] Target-arm: Add the Cortex-M4 CPU

From: Peter Maydell
Subject: Re: [Qemu-devel] [PATCH] Target-arm: Add the Cortex-M4 CPU
Date: Thu, 28 May 2015 23:03:31 +0100

On 28 May 2015 at 22:22, Liviu Ionescu <address@hidden> wrote:
>> On 29 May 2015, at 00:09, Aurelio C. Remonda <address@hidden> wrote:
>> All we'd have to do is add the ARM_FEATURE_VFP4 to the initfn.
> if it is that simple, why don't we add it in for now?

It's not -- the FPU needs support in the exception handling
(lazy FPU saving is particularly interesting, but there's also
a bunch of minor stuff like "expose the FPU version registers
as memory mapped regs" IIRC).

-- PMM

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