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Re: [PATCH] allwinner-h3: Switch to SMC as PSCI conduit
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From: |
Philippe Mathieu-Daudé |
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Subject: |
Re: [PATCH] allwinner-h3: Switch to SMC as PSCI conduit |
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Date: |
Mon, 27 Sep 2021 13:05:05 +0200 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.1.0 |
On 9/20/21 22:39, Alexander Graf wrote:
> The Allwinner H3 SoC uses Cortex-A7 cores which support virtualization.
> However, today we are configuring QEMU to use HVC as PSCI conduit.
>
> That means HVC calls get trapped into QEMU instead of the guest's own
> emulated CPU and thus break the guest's ability to execute virtualization.
>
> Fix this by moving to SMC as conduit, freeing up HYP completely to the VM.
>
> Signed-off-by: Alexander Graf <agraf@csgraf.de>
> Fixes: 740dafc0ba0 ("hw/arm: add Allwinner H3 System-on-Chip")
> ---
> hw/arm/allwinner-h3.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>