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Re: [Qemu-devel] [PATCH v3 0/6] arm: support -cpu max (and gic-version=m
From: |
Alex Bennée |
Subject: |
Re: [Qemu-devel] [PATCH v3 0/6] arm: support -cpu max (and gic-version=max) |
Date: |
Fri, 09 Mar 2018 16:59:24 +0000 |
User-agent: |
mu4e 1.1.0; emacs 26.0.91 |
Peter Maydell <address@hidden> writes:
> On 9 March 2018 at 13:52, Alex Bennée <address@hidden> wrote:
>>
>> Peter Maydell <address@hidden> writes:
>>
>>> This patchset adds support for '-cpu max' to Arm, along the lines
>>> of the existing support we have for x86 targets:
>>>
>>> * under KVM, -cpu max is the same as -cpu host
>>> * under TCG, -cpu max means "emulate with as many features as
>>> possible"
>> <snip>
>>
>> It all looks good to me. The only minor problem I ran into was setting
>> -M virt,gic-version=max silently hangs with the stock QEMU_EFI.fd on my
>> version of Ubuntu. It would be nice if there was better feedback we
>> could give to the user in this case.
>
> Presumably that also fails if you ask for gic-version=3 ?
Yes.
>
>> It works with the latest snapshot from:
>>
>>
>> http://snapshots.linaro.org/reference-platform/enterprise/firmware/15/release/qemu-aarch64/
>
> Sounds like "earlier firmware versions didn't have gicv3 support,
> later ones do" ?
According to the dpkg changelog it should have:
Adds GICv3 support. Closes: #810495
However it seems like it wasn't complete support.
--
Alex Bennée
- Re: [Qemu-devel] [PATCH v3 6/6] hw/arm/virt: Support -machine gic-version=max, (continued)