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Red Hat Bugzilla – Attachment 312496 Details for
Bug 453677
nmi_watchdog=2 crashes the RT kernel on boot up
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[patch]
patch to allocate exception stacks
alloc_stack_early.patch (text/plain), 1.64 KB, created by
Clark Williams
on 2008-07-23 16:53:51 UTC
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Description:
patch to allocate exception stacks
Filename:
MIME Type:
Creator:
Clark Williams
Created:
2008-07-23 16:53:51 UTC
Size:
1.64 KB
patch
obsolete
>Subject: Re: [Fwd: Re: [Bug RH455747] Oops when running oprofile] >From: Peter Zijlstra <peterz@infradead.org> > >the below patch survived 10 reboots without issues > >I'll see if I can reach your machine and build this kernel there too.. > > >Index: linux-2.6.24.7.noarch/arch/x86/kernel/smpboot_64.c >=================================================================== >--- linux-2.6.24.7.noarch.orig/arch/x86/kernel/smpboot_64.c >+++ linux-2.6.24.7.noarch/arch/x86/kernel/smpboot_64.c >@@ -538,7 +538,7 @@ static void __cpuinit do_fork_idle(struc > static char boot_exception_stacks[(N_EXCEPTION_STACKS - 1) * EXCEPTION_STKSZ + DEBUG_STKSZ] > __attribute__((section(".bss.page_aligned"))); > >-static int __cpuinit allocate_stacks(int cpu) >+int __cpuinit allocate_stacks(int cpu) > { > static const unsigned int order[N_EXCEPTION_STACKS] = { > [0 ... N_EXCEPTION_STACKS - 1] = EXCEPTION_STACK_ORDER, >Index: linux-2.6.24.7.noarch/include/asm-x86/proto.h >=================================================================== >--- linux-2.6.24.7.noarch.orig/include/asm-x86/proto.h >+++ linux-2.6.24.7.noarch/include/asm-x86/proto.h >@@ -10,6 +10,7 @@ struct pt_regs; > > extern void start_kernel(void); > extern void pda_init(int); >+extern int allocate_stacks(int cpu); > > extern void early_idt_handler(void); > >Index: linux-2.6.24.7.noarch/arch/x86/kernel/traps_64.c >=================================================================== >--- linux-2.6.24.7.noarch.orig/arch/x86/kernel/traps_64.c >+++ linux-2.6.24.7.noarch/arch/x86/kernel/traps_64.c >@@ -1193,6 +1193,7 @@ void __init trap_init(void) > /* > * Should be a barrier for any external CPU state. > */ >+ allocate_stacks(0); > cpu_init(); > } > > >
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bug 453677
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