diff options
| author | Len Brown <len.brown@intel.com> | 2007-08-16 03:34:22 -0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2007-08-21 00:33:35 -0400 |
| commit | 61ec7567db103d537329b0db9a887db570431ff4 (patch) | |
| tree | 7287eb4bd00c09434fc2dd0babadfd0eb7ddc832 /include/asm-x86_64 | |
| parent | 28e8351ac22de25034e048c680014ad824323c65 (diff) | |
ACPI: boot correctly with "nosmp" or "maxcpus=0"
In MPS mode, "nosmp" and "maxcpus=0" boot a UP kernel with IOAPIC disabled.
However, in ACPI mode, these parameters didn't completely disable
the IO APIC initialization code and boot failed.
init/main.c:
Disable the IO_APIC if "nosmp" or "maxcpus=0"
undefine disable_ioapic_setup() when it doesn't apply.
i386:
delete ioapic_setup(), it was a duplicate of parse_noapic()
delete undefinition of disable_ioapic_setup()
x86_64:
rename disable_ioapic_setup() to parse_noapic() to match i386
define disable_ioapic_setup() in header to match i386
http://bugzilla.kernel.org/show_bug.cgi?id=1641
Acked-by: Andi Kleen <ak@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'include/asm-x86_64')
| -rw-r--r-- | include/asm-x86_64/io_apic.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/asm-x86_64/io_apic.h b/include/asm-x86_64/io_apic.h index 969d225a9350..d9f2e54324d5 100644 --- a/include/asm-x86_64/io_apic.h +++ b/include/asm-x86_64/io_apic.h @@ -109,6 +109,12 @@ extern int mpc_default_type; /* 1 if "noapic" boot option passed */ extern int skip_ioapic_setup; +static inline void disable_ioapic_setup(void) +{ + skip_ioapic_setup = 1; +} + + /* * If we use the IO-APIC for IRQ routing, disable automatic * assignment of PCI IRQ's. |