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| author | James Bottomley | 2006-02-24 22:04:14 +0100 |
|---|---|---|
| committer | Linus Torvalds | 2006-02-24 23:31:38 +0100 |
| commit | 2b932f6cf052920fb3a6281499e08209b08f5086 (patch) | |
| tree | c2710e09dd40ee9733bcd77234d6373acec741d2 /arch/i386/kernel/smpboot.c | |
| parent | [PATCH] page migration: Fix MPOL_INTERLEAVE behavior for migration via mbind() (diff) | |
| download | kernel-qcow2-linux-2b932f6cf052920fb3a6281499e08209b08f5086.tar.gz kernel-qcow2-linux-2b932f6cf052920fb3a6281499e08209b08f5086.tar.xz kernel-qcow2-linux-2b932f6cf052920fb3a6281499e08209b08f5086.zip | |
[PATCH] x86: fix broken SMP boot sequence
Recent GDT changes broke the SMP boot sequence if the booting CPU is
numbered anything other than zero. There's also a subtle source of error
in that the boot time CPU now uses cpu_gdt_table (which is actually the GDT
for booting CPUs in head.S). This patch fixes both problems by making GDT
descriptors themselves allocated from a per_cpu area and switching to them
in cpu_init(), which now means that cpu_gdt_table is exclusively used for
booting CPUs again.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Cc: Zachary Amsden <zach@vmware.com>
Cc: Matt Tolentino <metolent@snoqualmie.dp.intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/i386/kernel/smpboot.c')
| -rw-r--r-- | arch/i386/kernel/smpboot.c | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/arch/i386/kernel/smpboot.c b/arch/i386/kernel/smpboot.c index fb00ab7b7612..eba7f53f8b4a 100644 --- a/arch/i386/kernel/smpboot.c +++ b/arch/i386/kernel/smpboot.c @@ -898,12 +898,6 @@ static int __devinit do_boot_cpu(int apicid, int cpu) unsigned long start_eip; unsigned short nmi_high = 0, nmi_low = 0; - if (!cpu_gdt_descr[cpu].address && - !(cpu_gdt_descr[cpu].address = get_zeroed_page(GFP_KERNEL))) { - printk("Failed to allocate GDT for CPU %d\n", cpu); - return 1; - } - ++cpucount; /* |