linux-kernel - Re: [PATCH 6/9] drm/i915/gvt: Constify cmd_interrupt

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Message-ID: <cf2911d7-dbd0-e38b-4c7d-c197bc4af306@intel.com>
Date:   Fri, 10 Dec 2021 08:12:33 +0000
From:   "Wang, Zhi A" <zhi.a.wang@...el.com>
To:     Rikard Falkeborn <rikard.falkeborn@...il.com>,
        Zhenyu Wang <zhenyuw@...ux.intel.com>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        "Joonas Lahtinen" <joonas.lahtinen@...ux.intel.com>,
        "Vivi, Rodrigo" <rodrigo.vivi@...el.com>,
        Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>
CC:     "intel-gvt-dev@...ts.freedesktop.org" 
        <intel-gvt-dev@...ts.freedesktop.org>,
        "intel-gfx@...ts.freedesktop.org" <intel-gfx@...ts.freedesktop.org>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 6/9] drm/i915/gvt: Constify cmd_interrupt_events

On 12/4/2021 12:55 PM, Rikard Falkeborn wrote:
> It is never modified, so make it const to allow the compiler to put it
> in read-only memory.
>
> Signed-off-by: Rikard Falkeborn <rikard.falkeborn@...il.com>
> ---
>   drivers/gpu/drm/i915/gvt/cmd_parser.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/gvt/cmd_parser.c b/drivers/gpu/drm/i915/gvt/cmd_parser.c
> index c4118b808268..ce9307546e7f 100644
> --- a/drivers/gpu/drm/i915/gvt/cmd_parser.c
> +++ b/drivers/gpu/drm/i915/gvt/cmd_parser.c
> @@ -1144,7 +1144,7 @@ struct cmd_interrupt_event {
>   	int mi_user_interrupt;
>   };
>   
> -static struct cmd_interrupt_event cmd_interrupt_events[] = {
> +static const struct cmd_interrupt_event cmd_interrupt_events[] = {
>   	[RCS0] = {
>   		.pipe_control_notify = RCS_PIPE_CONTROL,
>   		.mi_flush_dw = INTEL_GVT_EVENT_RESERVED,

Reviewed-by: Zhi Wang <zhi.a.wang@...el.com>