Messages in this thread | | | Date | Wed, 19 Jul 2023 15:43:43 -0500 | From | Bjorn Helgaas <> | Subject | Re: [PATCH v3 1/9] video/aperture: Add a helper to detect if an aperture contains firmware FB |
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On Wed, Jul 12, 2023 at 12:43:02AM +0800, Sui Jingfeng wrote: > From: Sui Jingfeng <suijingfeng@loongson.cn> > > This patch adds the aperture_contain_firmware_fb() function to do the > determination. Unfortunately, due to the fact that the apertures list > will be freed dynamically, the location and size information of the > firmware FB will be lost after dedicated drivers call > aperture_remove_conflicting_devices(), > aperture_remove_conflicting_pci_devices() or > aperture_remove_all_conflicting_devices() functions
> We solve this problem by introducing two static variables that record the > firmware framebuffer's start addrness and end addrness. It assumes that the > system has only one active firmware framebuffer driver at a time. We don't > use the global structure screen_info here, because PCI resources may get > reallocated (the VRAM BAR could be moved) during the kernel boot stage.
s/addrness/address/ (twice)
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