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SubjectRe: [PATCH] x86: Allow MMCONFIG above 4GB on x86_64
On Wed, Jul 9, 2008 at 1:41 PM, John Keller <jpk@sgi.com> wrote:
> SGI UV will have MMCFG base addresses that are greater than 4GB (32 bits).
>
> Signed-off-by: John Keller <jpk@sgi.com>
> ---
>
> A similar patch was submitted over a year ago, but apparently was not
> merged in.
>
> http://marc.info/?l=linux-acpi&m=117283388212912&w=2
>
>
> Index: linux-2.6/arch/x86/kernel/acpi/boot.c
> ===================================================================
> --- linux-2.6.orig/arch/x86/kernel/acpi/boot.c 2008-07-09 13:02:54.000000000 -0500
> +++ linux-2.6/arch/x86/kernel/acpi/boot.c 2008-07-09 15:25:32.000000000 -0500
> @@ -200,6 +200,7 @@ int __init acpi_parse_mcfg(struct acpi_t
> }
>
> memcpy(pci_mmcfg_config, &mcfg[1], config_size);
> +#ifndef CONFIG_X86_64
> for (i = 0; i < pci_mmcfg_config_num; ++i) {
> if (pci_mmcfg_config[i].address > 0xFFFFFFFF) {
> printk(KERN_ERR PREFIX
> @@ -209,6 +210,7 @@ int __init acpi_parse_mcfg(struct acpi_t
> return -ENODEV;
> }
> }
> +#endif
>
> return 0;
> }

CONFIG_RESOURCES_64BIT ?

YH


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