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authorCliff Wickman <cpw@sgi.com>2010-12-13 17:51:57 +0100
committerH. Peter Anvin <hpa@linux.intel.com>2010-12-27 23:02:11 +0100
commitc8217b8305e5e75c23617f2f4cd262527d952c0a (patch)
treeb7bc356f5021cbbb21ee24d00c9e94f03f6d35c4 /kernel/cpu.c
parentLinux 2.6.37-rc7 (diff)
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x86, paravirt: Use native_halt on a halt, not native_safe_halt
halt() should use native_halt() safe_halt() uses native_safe_halt() If CONFIG_PARAVIRT=y, halt() is defined in arch/x86/include/asm/paravirt.h as static inline void halt(void) { PVOP_VCALL0(pv_irq_ops.safe_halt); } Otherwise (no CONFIG_PARAVIRT) halt() in arch/x86/include/asm/irqflags.h is static inline void halt(void) { native_halt(); } So it looks to me like the CONFIG_PARAVIRT case of using native_safe_halt() for a halt() is an oversight. Am I missing something? It probably hasn't shown up as a problem because the local apic is disabled on a shutdown or restart. But if we disable interrupts and call halt() we shouldn't expect that the halt() will re-enable interrupts. Signed-off-by: Cliff Wickman <cpw@sgi.com> LKML-Reference: <E1PSBcz-0001g1-FM@eag09.americas.sgi.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'kernel/cpu.c')
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