Re: [PATCH v3 3/6] x86/jailhouse: Enable PCI mmconfig access in inmates

[Andy Shevchenko]

On Thu, Mar 1, 2018 at 7:40 AM, Jan Kiszka <jan.kiszka@xxxxxxxxxxx> wrote:

> Use the PCI mmconfig base address exported by jailhouse in boot
> parameters in order to access the memory mapped PCI configuration space.


> --- a/arch/x86/kernel/jailhouse.c
> +++ b/arch/x86/kernel/jailhouse.c
> @@ -124,6 +124,13 @@ static int __init jailhouse_pci_arch_init(void)
>         if (pcibios_last_bus < 0)
>                 pcibios_last_bus = 0xff;
>
> +#ifdef CONFIG_PCI_MMCONFIG
> +       if (setup_data.pci_mmconfig_base) {

> +               pci_mmconfig_add(0, 0, 0xff, setup_data.pci_mmconfig_base);

Hmm... Shouldn't be pcibios_last_bus instead of 0xff?

> +               pci_mmcfg_arch_init();
> +       }
> +#endif

-- 
With Best Regards,
Andy Shevchenko