Re: [Qemu-devel] [PATCH 0/6][RFC] AArch64 support for Versatile Express using KVM

[Andreas Färber]

Alex,

Am 28.06.2013 15:04, schrieb Andreas Färber:
> Am 28.06.2013 14:44, schrieb Peter Maydell:
>> On 28 June 2013 13:20, Mian M. Hamayun <address@hidden> wrote:
>>> This patch series implements KVM support in QEMU for the ARMv8 Cortex
>>> A57 CPU.
>>> It depends on the previously submitted AArch64 Preparation Patchset V4,
>>> and uses
>>> as a base, the existing Versatile Express machine model and the already
>>> available KVM in-kernel GIC support.
>>
>> This rather overlaps with a bunch of work John Rigby has already done
>> (though not yet published to the mailing lists):
>>
>> https://git.linaro.org/gitweb?p=people/pmaydell/qemu-aarch64.git;a=shortlog;h=refs/heads/kvm-aarch64-wip
>>
>> so now we need to reconcile the two trees. If you'd let us know
>> you were doing this a bit earlier we could probably have
>> coordinated something...
> 
> I had been looking into that tree myself, and apart from John's
> Linux'ish "ARM: " prefixes rather than our usual "target-arm: " (part of
> which you forgot to fix before sending a PULL), I am really opposed to
> copying A15MPCore_priv for A57. I plan to post a cleanup for the A9
> version the weekend, now that we have a more elaborate hw/ directory
> structure for headers.
> 
> Also I would really prefer to have the is_aarch64() helper operate on
> ARMCPU rather than CPUARMState. QOM cast removal is underway to make
> that more efficient.
> 
> Is there a 32-bit aarch64 register in ARMv8 to be accessed by TCG? If
> not, the field should be in ARMCPU and a bool rather than uint32_t.

Care to comment on the latter?

Regards,
Andreas

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