[lkml]   [2003]   [Jan]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: 48GB NUMA-Q boots, with major IO-APIC hassles
>(3) setup_ioapic_ids_from_mpc() panic()'s.
>-- the clustered_apic_mode check and/or its current equivalent
>-- no longer suffices with 16 IO-APIC's. Turn off all the
>-- renumbering logic and hardcode the numbers to alternate
>-- between 13 and 14, where they belong.
>-- The real issue here is that the phys_id_present_map is not
>-- properly per- APIC bus. The physid's of IO-APIC's are
>-- irrelevant from the standpoint of the rest of the kernel,
>-- but are inexplicably used to identify them throughout the
>-- rest of arch/i386/ when physids are nothing resembling
>-- unique identifiers in multiple APIC bus systems. This

I also have a problem with setup_ioapic_ids_from_mpc(). I opt for 0xFF as
max io_apic phys_id (and leave it alone!), because even though we have fewer
IO-APICs than that, I'd like to keep the actual numbers from MP table or
ACPI, because all APIC and IO-APIC id's on ES7000 are 8 bit, unique, and
meaningful (used as a bitmaps) when I have to implement CPU, PCI hot plug
and dynamic partitioning (I hate to think of possible confusing tables and
dependencies I will have to maintain otherwise...).

Could this routine be made with alternative architecturally private path (as
a hook or with a hook inside)?


To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 13:32    [W:0.032 / U:1.204 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site