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authorEric W. Biederman <ebiederm@xmission.com>2005-10-30 14:59:47 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2005-10-30 17:37:13 -0800
commit6c180d94abdcfb77a2fe4275bd03687fa159acd7 (patch)
tree3254ea7af80edbefc71d9582bdb13867828a8f6d
parent009b29d90f575a83eba185950a7182ab05e7741a (diff)
[PATCH] i386 mpparse: Only ignore lapic information we can't store
After staring at mpparse.c for a little longer I noticed that when we hit our limit of num_processors we are filtering out information about other processors that we can still store. This patch just reorders the code so we store everything we can. This should avoid the incorrect warning about our boot CPU not being listed by the BIOS that we are now getting in the kexec on panic case, and it should allow us to detect all apicid conflicts even when our physical number of cpus exceeds maxcpus. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--arch/i386/kernel/mpparse.c35
1 files changed, 19 insertions, 16 deletions
diff --git a/arch/i386/kernel/mpparse.c b/arch/i386/kernel/mpparse.c
index 3751bb44961..8f767d9aa45 100644
--- a/arch/i386/kernel/mpparse.c
+++ b/arch/i386/kernel/mpparse.c
@@ -182,17 +182,6 @@ static void __devinit MP_processor_info (struct mpc_config_processor *m)
boot_cpu_physical_apicid = m->mpc_apicid;
}
- if (num_processors >= NR_CPUS) {
- printk(KERN_WARNING "WARNING: NR_CPUS limit of %i reached."
- " Processor ignored.\n", NR_CPUS);
- return;
- }
-
- if (num_processors >= maxcpus) {
- printk(KERN_WARNING "WARNING: maxcpus limit of %i reached."
- " Processor ignored.\n", maxcpus);
- return;
- }
ver = m->mpc_apicver;
if (!MP_valid_apicid(apicid, ver)) {
@@ -201,11 +190,6 @@ static void __devinit MP_processor_info (struct mpc_config_processor *m)
return;
}
- cpu_set(num_processors, cpu_possible_map);
- num_processors++;
- phys_cpu = apicid_to_cpu_present(apicid);
- physids_or(phys_cpu_present_map, phys_cpu_present_map, phys_cpu);
-
/*
* Validate version
*/
@@ -216,6 +200,25 @@ static void __devinit MP_processor_info (struct mpc_config_processor *m)
ver = 0x10;
}
apic_version[m->mpc_apicid] = ver;
+
+ phys_cpu = apicid_to_cpu_present(apicid);
+ physids_or(phys_cpu_present_map, phys_cpu_present_map, phys_cpu);
+
+ if (num_processors >= NR_CPUS) {
+ printk(KERN_WARNING "WARNING: NR_CPUS limit of %i reached."
+ " Processor ignored.\n", NR_CPUS);
+ return;
+ }
+
+ if (num_processors >= maxcpus) {
+ printk(KERN_WARNING "WARNING: maxcpus limit of %i reached."
+ " Processor ignored.\n", maxcpus);
+ return;
+ }
+
+ cpu_set(num_processors, cpu_possible_map);
+ num_processors++;
+
if ((num_processors > 8) &&
APIC_XAPIC(ver) &&
(boot_cpu_data.x86_vendor == X86_VENDOR_INTEL))