Re: [PATCH] x86: let MPS support selectable

From: Ingo Molnar
Date: Thu Jun 19 2008 - 08:49:50 EST



* Ingo Molnar <mingo@xxxxxxx> wrote:

> applied to tip/x86/mpparse, thanks.

-tip testing found an early 64-bit bootup crash:


SMP: Allowing 0 CPUs, 0 hotplug CPUs
PANIC: early exception 0e rip 10:ffffffff804aeb32 error 2 cr2
ffff810040000000
Pid: 0, comm: swapper Not tainted 2.6.26-rc6 #8188

Call Trace:
[<ffffffff80233f59>] ? printk+0x77/0x98
[<ffffffff80d78196>] early_idt_handler+0x56/0x6a
[<ffffffff804aeb32>] ? memset+0x32/0xc0
[<ffffffff80d88026>] ? __alloc_bootmem_core+0x1ce/0x372
[<ffffffff80d88343>] __alloc_bootmem_nopanic+0x35/0x60
[<ffffffff80d8837f>] __alloc_bootmem+0x11/0x3a
[<ffffffff80d7d329>] setup_per_cpu_areas+0x8d/0x249
[<ffffffff80d78d61>] start_kernel+0x175/0x3a4
[<ffffffff80d78365>] x86_64_start_kernel+0x165/0x16e

RIP 0x10

with this config (1GB RAM system):

http://redhat.com/~mingo/misc/config-Thu_Jun_19_14_22_37_CEST_2008.bad

so i reverted this patch for now.

Ingo
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