On Sat, Jun 16, 2012 at 2:23 AM, Jiang Liu <jiang.liu@xxxxxxxxxx> wrote: > On 2012-6-16 0:51, Yinghai Lu wrote: >> >> still have some problem: >> pci_mmcfg_check_reserved==>is_mmconf_reserved >> >> will update cfg->end_bus. > Hi Yinghai, > How about following patch for this issue? I guess we need to > keep current behavior at boot time for backward compatibility, right? We'd better to make all path share as most code as possible. 1. hostbridge scanning during boot -- early, it will check chipset and e820 2. MCFG checking during boot -- early, it will check e820 3. MCFG checking during boot -- late, it will check acpi pnp 4. _CBA checking for hotplug-able pci root bus but it is installed during boot. 5. _CBA checking for hotplug-able pci root bus during run time. please keep mapping for all entries in MCFG table. aka 1, 2, 3. I have some local patches that will read ext pci conf space before scan pci bus. please check attached one for nehalem-ioh. for case 4, 5: only need to add one bool in acpi_pci_root to record if mmconf list and mapping is touched. Thanks Yinghai
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intel_bus_new_all.patch
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