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From: Alex Deucher <alexdeucher@gmail.com>
To: Victor Zhao <Victor.Zhao@amd.com>
Cc: Emily Deng <emily.deng@amd.com>,
	amd-gfx list <amd-gfx@lists.freedesktop.org>
Subject: Re: [PATCH] drm/amdgpu: add determine passthrough under arm64
Date: Mon, 24 Jan 2022 11:53:38 -0500	[thread overview]
Message-ID: <CADnq5_M0x9Y38X095Di2mYXVTVm4Pi1-w_F0gkempSYhSkfUWw@mail.gmail.com> (raw)
In-Reply-To: <20220124064525.1357499-1-Victor.Zhao@amd.com>

Acked-by: Alex Deucher <alexander.deucher@amd.com>

On Mon, Jan 24, 2022 at 1:45 AM Victor Zhao <Victor.Zhao@amd.com> wrote:
>
> add determine for passthrough mode under arm64 by reading
> CurrentEL register
>
> Signed-off-by: Victor Zhao <Victor.Zhao@amd.com>
> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
> index c5edd84c1c12..40803aab136f 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
> @@ -296,6 +296,8 @@ static inline bool is_virtual_machine(void)
>  {
>  #ifdef CONFIG_X86
>         return boot_cpu_has(X86_FEATURE_HYPERVISOR);
> +#elif CONFIG_ARM64
> +       return !is_kernel_in_hyp_mode();
>  #else
>         return false;
>  #endif
> --
> 2.25.1
>

      reply	other threads:[~2022-01-24 16:53 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-01-24  6:45 [PATCH] drm/amdgpu: add determine passthrough under arm64 Victor Zhao
2022-01-24 16:53 ` Alex Deucher [this message]

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