Re: [PATCH 0/4] Add support for Fujitsu A64FX processor

[Peter Maydell <peter.maydell@linaro.org>]

On Fri, 16 Jul 2021 at 06:27, Shuuichirou Ishii
<ishii.shuuichir@fujitsu.com> wrote:
>
> Hello, everyone.

Hi; it looks like something with your outgoing email setup still disagrees
with QEMU's mailing list server :-(  As far as I can tell these emails didn't
make it to the list, so only people on the direct-cc list will have
seen them :-(

> These are a series of patches to enable the Fujitsu A64FX processor[1] in "machine virt".
>
> [1]
> https://github.com/fujitsu/A64FX/blob/master/doc/A64FX_Microarchitecture_Manual_en_1.4.pdf
>
>
> The motivation for creating these patches was previously discussed in the following RFC.
>
> https://lore.kernel.org/qemu-devel/a56283b3-3bb2-d9a3-9a6e-8175cc17b376@linaro.org/
>
> This patch series is a fix to enable the A64FX processor by specifying "-cpu a64fx" in "-M virt".
> In the future, we plan to implement the implementation defined register group of the HPC
> (High Performance Computing) function[2] which is implemented specific to the A64FX processor,
> but since the A64FX-related functions are not implemented in QEMU at present,
> we will first implement the minimum necessary functions.
> However, since the A64FX-related functions are currently not implemented in QEMU,
> we will first implement the minimum necessary functions.
>
> [2]
> https://github.com/fujitsu/A64FX/blob/master/doc/A64FX_Specification_HPC_Extension_v1_EN.pdf
>
> Since this is the first time for us to contribute patches to qemu,
> we are sure that there will be some incompetence,
> but if there are any problems, we would appreciate your comments.
>
> Best regards
>
> Shuuichirou Ishii (4):
>   target-arm: Introduce ARM_FEATURE_A64FX
>   target-arm: cpu64: Add support for Fujitsu A64FX
>   tests/arm-cpu-features: Add A64FX processor related tests
>   docs/system: Add a64fx(Fujitsu A64FX processor) to supported guest CPU
>     type
>
>  docs/system/arm/virt.rst       |  1 +
>  hw/arm/virt.c                  |  1 +
>  target/arm/cpu.h               |  1 +
>  target/arm/cpu64.c             | 49 ++++++++++++++++++++++++++++++++++++++++++
>  tests/qtest/arm-cpu-features.c |  3 +++
>  5 files changed, 55 insertions(+)

thanks
-- PMM