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Date: Mon, 06 Oct 2025 22:27:13 +0200
Message-Id: <DDBIT5J2HUWO.2MQPD4H5G4A44@kernel.org>
From: "Danilo Krummrich" <dakr@kernel.org>
Subject: Re: [PATCH 3/5] drm/nouveau/mmu/gp100: Remove unused/broken support
 for compression
Cc: <linux-kernel@vger.kernel.org>, <dri-devel@lists.freedesktop.org>, "Mary
 Guillemard" <mary@mary.zone>, "Faith Ekstrand"
 <faith.ekstrand@collabora.com>, "Ben Skeggs" <bskeggs@nvidia.com>, "Lyude
 Paul" <lyude@redhat.com>, "Maarten Lankhorst"
 <maarten.lankhorst@linux.intel.com>, "Maxime Ripard" <mripard@kernel.org>,
 "Thomas Zimmermann" <tzimmermann@suse.de>, "David Airlie"
 <airlied@gmail.com>, "Simona Vetter" <simona@ffwll.ch>,
 <nouveau@lists.freedesktop.org>
To: "Mohamed Ahmed" <mohamedahmedegypt2001@gmail.com>
References: <20251006191329.277485-1-mohamedahmedegypt2001@gmail.com>
 <20251006191329.277485-4-mohamedahmedegypt2001@gmail.com>
In-Reply-To: <20251006191329.277485-4-mohamedahmedegypt2001@gmail.com>

On Mon Oct 6, 2025 at 9:13 PM CEST, Mohamed Ahmed wrote:
> From: Ben Skeggs <bskeggs@nvidia.com>
>
> From GP100 onwards it's not possible to initialise comptag RAM without
> PMU firmware, which nouveau has no support for.
>
> As such, this code is essentially a no-op and will always revert to the
> equivalent non-compressed kind due to comptag allocation failure.  It's
> also broken for the needs of VM_BIND/Vulkan.
>
> Remove the code entirely to make way for supporting compression on GPUs
> that support GSM-RM.
>
> Signed-off-by: Ben Skeggs <bskeggs@nvidia.com>

This patch is missing your SoB.