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| author | Glauber de Oliveira Costa <gcosta@redhat.com> | 2008-03-19 18:25:23 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-04-17 17:41:01 +0200 |
| commit | 4fe29a85642544503cf81e9cf251ef0f4e65b162 (patch) | |
| tree | 1fe0ed2b1e80e7c638fc12e32806e90ba0272516 /arch/x86/kernel/smpboot_32.c | |
| parent | x86: fix alloc_bootmem_pages_node macro (diff) | |
| download | linux-4fe29a85642544503cf81e9cf251ef0f4e65b162.tar.xz linux-4fe29a85642544503cf81e9cf251ef0f4e65b162.zip | |
x86: use specialized routine for setup per-cpu area
We use the same routing as x86_64, moved now to setup.c.
Just with a few ifdefs inside.
Note that this routing uses prefill_possible_map().
It has the very nice side effect of allowing hotplugging of
cpus that are marked as present but disabled by acpi bios.
Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/smpboot_32.c')
| -rw-r--r-- | arch/x86/kernel/smpboot_32.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kernel/smpboot_32.c b/arch/x86/kernel/smpboot_32.c index 92a5df6190b5..bf5c9e9f26c1 100644 --- a/arch/x86/kernel/smpboot_32.c +++ b/arch/x86/kernel/smpboot_32.c @@ -665,6 +665,7 @@ static int __cpuinit do_boot_cpu(int apicid, int cpu) unmap_cpu_to_logical_apicid(cpu); cpu_clear(cpu, cpu_callout_map); /* was set here (do_boot_cpu()) */ cpu_clear(cpu, cpu_initialized); /* was set by cpu_init() */ + cpu_clear(cpu, cpu_possible_map); cpucount--; } else { per_cpu(x86_cpu_to_apicid, cpu) = apicid; @@ -743,6 +744,7 @@ EXPORT_SYMBOL(xquad_portio); static void __init disable_smp(void) { + cpu_possible_map = cpumask_of_cpu(0); smpboot_clear_io_apic_irqs(); phys_cpu_present_map = physid_mask_of_physid(0); map_cpu_to_logical_apicid(); |