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Message-ID: <628f718b-bcbc-6a3b-6e7f-40148160b5b7@loongson.cn>
Date:   Tue, 27 Jun 2023 22:20:17 +0800
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Subject: Re: [PATCH v7 8/8] drm/radeon: Implement the is_boot_device callback
 function
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To:     Sui Jingfeng <15330273260@189.cn>,
        Bjorn Helgaas <bhelgaas@google.com>
Cc:     amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
        linux-kernel@vger.kernel.org, intel-gfx@lists.freedesktop.org,
        nouveau@lists.freedesktop.org, linux-pci@vger.kernel.org,
        kvm@vger.kernel.org, linux-fbdev@vger.kernel.org,
        Alex Deucher <alexander.deucher@amd.com>,
        Christian Konig <christian.koenig@amd.com>,
        Pan Xinhui <Xinhui.Pan@amd.com>,
        David Airlie <airlied@gmail.com>,
        Daniel Vetter <daniel@ffwll.ch>,
        Jani Nikula <jani.nikula@linux.intel.com>
References: <20230613030151.216625-1-15330273260@189.cn>
 <20230613030151.216625-9-15330273260@189.cn>
From:   Sui Jingfeng <suijingfeng@loongson.cn>
Organization: Loongson
In-Reply-To: <20230613030151.216625-9-15330273260@189.cn>
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PING ?


On 2023/6/13 11:01, Sui Jingfeng wrote:
> From: Sui Jingfeng <suijingfeng@loongson.cn>
>
> [why]
>
> The vga_is_firmware_default() defined in drivers/pci/vgaarb.c is
> arch-dependent, it's a dummy on non-x86 architectures currently.
> This made VGAARB lost an important condition for the arbitration.
> It could still be wrong even if we remove the #ifdef and #endif guards.
> because the PCI bar will move (resource re-allocation).
>
> [how]
>
> The device that owns the firmware framebuffer should be the default boot
> device. This patch adds an arch-independent function to enforce this rule

-- 
Jingfeng