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| author |   Mike Travis <travis@sgi.com> | 2008-05-12 21:21:13 +0200 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2008-07-08 11:31:26 +0200 |
| commit | 5deb0b2a25b7b568ab81f7c38052572ecf4ccc96 (patch) | |
| tree | 5718d2880139f39f124f4c8014d0d871fcef99d5 /arch/x86/kernel/head64.c | |
| parent | x86: remove static boot_cpu_pda array v2 (diff) | |
| download | linux-dev-5deb0b2a25b7b568ab81f7c38052572ecf4ccc96.tar.xz linux-dev-5deb0b2a25b7b568ab81f7c38052572ecf4ccc96.zip | |
x86: leave initial __cpu_pda array in place until cpus are booted
Ingo Molnar wrote:
...
> they crashed after about 3 randconfig iterations with:
>
> early res: 4 [8000-afff] PGTABLE
> early res: 5 [b000-b87f] MEMNODEMAP
> PANIC: early exception 0e rip 10:ffffffff8077a150 error 2 cr2 37
> Pid: 0, comm: swapper Not tainted 2.6.25-sched-devel.git-x86-latest.git #14
>
> Call Trace:
> [<ffffffff81466196>] early_idt_handler+0x56/0x6a
> [<ffffffff8077a150>] ? numa_set_node+0x30/0x60
> [<ffffffff8077a129>] ? numa_set_node+0x9/0x60
> [<ffffffff8147a543>] numa_init_array+0x93/0xf0
> [<ffffffff8147b039>] acpi_scan_nodes+0x3b9/0x3f0
> [<ffffffff8147a496>] numa_initmem_init+0x136/0x150
> [<ffffffff8146da5f>] setup_arch+0x48f/0x700
> [<ffffffff802566ea>] ? clockevents_register_notifier+0x3a/0x50
> [<ffffffff81466a87>] start_kernel+0xd7/0x440
> [<ffffffff81466422>] x86_64_start_kernel+0x222/0x280
...
Here's the fixup... This one should follow the previous patches.
Thanks,
Mike
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/kernel/head64.c')
| -rw-r--r-- | arch/x86/kernel/head64.c | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c index 0ab59edd7067..4bcb61cd9fcd 100644 --- a/arch/x86/kernel/head64.c +++ b/arch/x86/kernel/head64.c @@ -29,17 +29,13 @@ static struct x8664_pda _boot_cpu_pda __read_mostly; #ifdef CONFIG_SMP -#ifdef CONFIG_DEBUG_PER_CPU_MAPS /* - * We install an empty cpu_pda pointer table to trap references before - * the actual cpu_pda pointer table is created in setup_cpu_pda_map(). + * We install an empty cpu_pda pointer table to indicate to early users + * (numa_set_node) that the cpu_pda pointer table for cpus other than + * the boot cpu is not yet setup. */ static struct x8664_pda *__cpu_pda[NR_CPUS] __initdata; #else -static struct x8664_pda *__cpu_pda[1] __read_mostly; -#endif - -#else /* !CONFIG_SMP (NR_CPUS will be 1) */ static struct x8664_pda *__cpu_pda[NR_CPUS] __read_mostly; #endif |