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MCE: Don't run 32bit machine checks with interrupts on

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Running machine checks with interrupt on is a extremly bad idea. The machine
check handler only runs when the system is broken and needs to finish
as quickly as possible.

Remove the respective bogus post 2.6.27 regression and call
the machine check vector directly again.

This removes only code.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
[Cherry-picked from x86/mce]
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Andi Kleen 2008-10-21 22:45:22 +02:00 committed by Thomas Gleixner
parent 2bfef69d9e
commit d2f6f7aeee
2 changed files with 1 additions and 9 deletions
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2
arch/x86/kernel/entry_32.S
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@ -1024,7 +1024,7 @@ ENTRY(machine_check)
RING0_INT_FRAME
pushl $0
CFI_ADJUST_CFA_OFFSET 4
pushl $do_machine_check
pushl machine_check_vector
CFI_ADJUST_CFA_OFFSET 4
jmp error_code
CFI_ENDPROC

8
arch/x86/kernel/traps.c
View file

@ -931,14 +931,6 @@ do_device_not_available(struct pt_regs *regs, long error)
}
#ifdef CONFIG_X86_32
#ifdef CONFIG_X86_MCE
dotraplinkage void __kprobes do_machine_check(struct pt_regs *regs, long error)
{
conditional_sti(regs);
machine_check_vector(regs, error);
}
#endif
dotraplinkage void do_iret_error(struct pt_regs *regs, long error_code)
{
siginfo_t info;