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authorMike Travis <travis@sgi.com>2008-12-17 15:21:39 -0800
committerIngo Molnar <mingo@elte.hu>2008-12-18 12:08:05 +0100
commit3b11ce7f542e415c90267b4482d4611410b468e6 (patch)
tree26366b9f25af830b71c78504bbadd94896a8b82a /arch/x86/kernel/apic.c
parenta775a38b1353161a6d7af86b667d6523c12c1a37 (diff)
x86: use possible_cpus=NUM to extend the possible cpus allowed
Impact: add new boot parameter Use possible_cpus=NUM kernel parameter to extend the number of possible cpus. The ability to HOTPLUG ON cpus that are "possible" but not "present" is dealt with in a later patch. Signed-off-by: Mike Travis <travis@sgi.com>
Diffstat (limited to 'arch/x86/kernel/apic.c')
-rw-r--r--arch/x86/kernel/apic.c20
1 files changed, 12 insertions, 8 deletions
diff --git a/arch/x86/kernel/apic.c b/arch/x86/kernel/apic.c
index 93cf2d13f33..f7a32a3beb2 100644
--- a/arch/x86/kernel/apic.c
+++ b/arch/x86/kernel/apic.c
@@ -1819,28 +1819,32 @@ void disconnect_bsp_APIC(int virt_wire_setup)
void __cpuinit generic_processor_info(int apicid, int version)
{
int cpu;
- cpumask_t tmp_map;
/*
* Validate version
*/
if (version == 0x0) {
pr_warning("BIOS bug, APIC version is 0 for CPU#%d! "
- "fixing up to 0x10. (tell your hw vendor)\n",
- version);
+ "fixing up to 0x10. (tell your hw vendor)\n",
+ version);
version = 0x10;
}
apic_version[apicid] = version;
- if (num_processors >= NR_CPUS) {
- pr_warning("WARNING: NR_CPUS limit of %i reached."
- " Processor ignored.\n", NR_CPUS);
+ if (num_processors >= nr_cpu_ids) {
+ int max = nr_cpu_ids;
+ int thiscpu = max + disabled_cpus;
+
+ pr_warning(
+ "ACPI: NR_CPUS/possible_cpus limit of %i reached."
+ " Processor %d/0x%x ignored.\n", max, thiscpu, apicid);
+
+ disabled_cpus++;
return;
}
num_processors++;
- cpus_complement(tmp_map, cpu_present_map);
- cpu = first_cpu(tmp_map);
+ cpu = cpumask_next_zero(-1, cpu_present_mask);
physid_set(apicid, phys_cpu_present_map);
if (apicid == boot_cpu_physical_apicid) {