Re: [PATCH v7 8/8] drm/radeon: Implement the is_boot_device callback function

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PING ?


On 2023/6/13 11:01, Sui Jingfeng wrote:
From: Sui Jingfeng <suijingfeng@xxxxxxxxxxx>

[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




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