Re: [coreboot] Patch set updated for coreboot: 6709bdd Fix multipleVGA cards resource conflict on Windows

[ron minnich]

> /* It isn't safe to enable multiple VGA cards.
> * Windows will report resource conflict when more than one
> * VGA-compatible legacy graphic card in the system.
> */
>
> +#if CONFIG_VGA_BRIDGE_SETUP == 1
> extern device_t vga_pri;
> if (((dev->class >> 16) == PCI_BASE_CLASS_DISPLAY) &&
> (dev != vga_pri)) {
> if (((vga_pri->class >> 8) == PCI_CLASS_DISPLAY_VGA) &&
> ((dev->class >> 8) == PCI_CLASS_DISPLAY_VGA)) {
> dev->command &= ~(PCI_COMMAND_IO | PCI_COMMAND_MEMORY);
> }
> }
>
> +#endif

What do Linux or *BSD do in the same situation? Do they handle it cleanly?

thanks

ron