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The Linux kernel configuration item CONFIG_VGA_ARB
has multiple definitions:
drivers/pci/Kconfig
The configuration item CONFIG_VGA_ARB:
( CONFIG_EXPERT ) && (( CONFIG_PCI && ! CONFIG_S390 ))
Some "legacy" VGA devices implemented on PCI typically have the same hard-decoded addresses as they did on ISA. When multiple PCI devices are accessed at same time they need some kind of coordination. Please see Documentation/gpu/vgaarbiter.rst for more details. Select this to enable VGA arbiter.
drivers/gpu/vga/Kconfig
The configuration item CONFIG_VGA_ARB:
( CONFIG_EXPERT ) && (( CONFIG_PCI && ! CONFIG_S390 ))
Some "legacy" VGA devices implemented on PCI typically have the same hard-decoded addresses as they did on ISA. When multiple PCI devices are accessed at same time they need some kind of coordination. Please see Documentation/gpu/vgaarbiter.rst for more details. Select this to enable VGA arbiter.
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