linux-kernel - Re: [PATCH v2 1/2] drm/amdkfd: Move the ignore

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Date:   Thu, 27 Aug 2020 00:28:39 -0400
From:   Felix Kuehling <felix.kuehling@....com>
To:     Hanjun Guo <guohanjun@...wei.com>,
        Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>
Cc:     linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/2] drm/amdkfd: Move the ignore_crat check before the
 CRAT table get


Am 2020-08-26 um 4:29 a.m. schrieb Hanjun Guo:
> If the ignore_crat is set to non-zero value, it's no point getting
> the CRAT table, so just move the ignore_crat check before we get the
> CRAT table.
>
> Signed-off-by: Hanjun Guo <guohanjun@...wei.com>
> ---
>  drivers/gpu/drm/amd/amdkfd/kfd_crat.c | 10 +++++-----
>  1 file changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_crat.c b/drivers/gpu/drm/amd/amdkfd/kfd_crat.c
> index 6a250f8..ed77b109 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_crat.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_crat.c
> @@ -764,6 +764,11 @@ int kfd_create_crat_image_acpi(void **crat_image, size_t *size)
>  
>  	*crat_image = NULL;
>  
> +	if (ignore_crat) {

A conflicting change in this area was just submitted on Monday to
amd-staging-drm-next. You'll need to rebase your patch. It should be
straight-forward. ignore_crat was replaced with a function call
kfd_ignore_crat().

Other than that, your patch series looks good to me. If I don't see an
update from you in a day or two, I'll fix it up myself and add my R-b.

Thanks,
  Felix


> +		pr_info("CRAT table disabled by module option\n");
> +		return -ENODATA;
> +	}
> +
>  	/* Fetch the CRAT table from ACPI */
>  	status = acpi_get_table(CRAT_SIGNATURE, 0, &crat_table);
>  	if (status == AE_NOT_FOUND) {
> @@ -776,11 +781,6 @@ int kfd_create_crat_image_acpi(void **crat_image, size_t *size)
>  		return -EINVAL;
>  	}
>  
> -	if (ignore_crat) {
> -		pr_info("CRAT table disabled by module option\n");
> -		return -ENODATA;
> -	}
> -
>  	pcrat_image = kmemdup(crat_table, crat_table->length, GFP_KERNEL);
>  	if (!pcrat_image)
>  		return -ENOMEM;