On 2012-6-20 2:31, Yinghai Lu wrote:
>
> looks like MCFG is not cached when the entries is reserved through e820.
> but it is cached when entries is reserved through ACPI ...
>
> Please check if it is possible just not cache MCFG.
OOPS, my bad. The right logic should be
void __init pci_mmcfg_late_init(void)
{
/* MMCONFIG disabled */
if ((pci_probe & PCI_PROBE_MMCONF) == 0)
return;
if (known_bridge)
return;
/* MMCONFIG hasn't been enabled yet */
if (pci_probe & PCI_PROBE_MASK & ~PCI_PROBE_MMCONF) {
acpi_sfi_table_parse(ACPI_SIG_MCFG, pci_parse_mcfg);
__pci_mmcfg_init(0);
}
if (!(pci_probe & PCI_PROBE_MASK & ~PCI_PROBE_MMCONF))
acpi_pci_cache_mcfg();
}
Will send out a patch once we decide whether we should keep the MCFG cache.
Thanks!
Gerry
--
To unsubscribe from this list: send the line "unsubscribe linux-pci" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
