diff options
| author | Suresh Siddha <suresh.b.siddha@intel.com> | 2009-03-16 17:04:59 -0700 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2009-03-17 15:42:28 -0700 |
| commit | 7c6d9f9785d156d0438401ef270322da3d5247db (patch) | |
| tree | 43836c9bbce7ad270b3e5e34cf469e0210c5d2a9 /arch/x86/kernel/apic/probe_32.c | |
| parent | 2e93456f5c069cf889c0c3acd1246ee88c49ae5c (diff) | |
x86, x2apic: use virtual wire A mode in disable_IO_APIC() with interrupt-remapping
Impact: make kexec work with x2apic
disable_IO_APIC() gets called during crashdump aswell, which configures the
IO-APIC/LAPIC so that legacy interrupts can be delivered for the kexec'd kernel.
In the presence of interrupt-remapping, we need to change the
interrupt-remapping configuration aswell as modifying IO-APIC for virtual wire
B mode.
To keep things simple during the crash, use virtual wire A mode
(for which we don't need to touch io-apic and interrupt-remapping tables).
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86/kernel/apic/probe_32.c')
0 files changed, 0 insertions, 0 deletions