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x86: call machine_shutdown and stop all CPUs in native_machine_halt

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Impact: really halt all CPUs on halt

Function machine_halt (resp. native_machine_halt) is empty for x86
architectures. When command 'halt -f' is invoked, the message "System
halted." is displayed but this is not really true because all CPUs are
still running.

There are also similar inconsistencies for other arches (some uses
power-off for halt or forever-loop with IRQs enabled/disabled).

IMO there should be used the same approach for all architectures OR
what does the message "System halted" really mean?

This patch fixes it for x86.

Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ivan Vecera 2008-11-11 14:33:44 +01:00 • committed by Ingo Molnar
parent 3ad4f59705
commit d3ec5cae09
5 changed files with 24 additions and 13 deletions
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2
arch/x86/include/asm/system.h
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@ -314,6 +314,8 @@ extern void free_init_pages(char *what, unsigned long begin, unsigned long end);
void default_idle(void);
void stop_this_cpu(void *dummy);
/*
* Force strict CPU ordering.
* And yes, this is required on UP too when we're talking