From 62d7d7ed11760a0fea40e4fc6f0553e721d00443 Mon Sep 17 00:00:00 2001 From: Glauber de Oliveira Costa Date: Wed, 30 Jan 2008 13:31:27 +0100 Subject: x86: move the definition of set_iopl_mask to common header This patch moves the definition of set_iopl_mask to processor.h, instead of letting it at processor_32.h. For x86_64, nothing is done, as we don't really need such a function. However, having it on both arches saves us from putting an ifdef in the pv_cpu_ops struct. Signed-off-by: Glauber de Oliveira Costa Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner --- include/asm-x86/processor.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'include/asm-x86/processor.h') diff --git a/include/asm-x86/processor.h b/include/asm-x86/processor.h index 8d0af7bf090a..8b7794766884 100644 --- a/include/asm-x86/processor.h +++ b/include/asm-x86/processor.h @@ -78,6 +78,24 @@ static inline void native_set_debugreg(int regno, unsigned long value) } } +/* + * Set IOPL bits in EFLAGS from given mask + */ +static inline void native_set_iopl_mask(unsigned mask) +{ +#ifdef CONFIG_X86_32 + unsigned int reg; + __asm__ __volatile__ ("pushfl;" + "popl %0;" + "andl %1, %0;" + "orl %2, %0;" + "pushl %0;" + "popfl" + : "=&r" (reg) + : "i" (~X86_EFLAGS_IOPL), "r" (mask)); +#endif +} + #ifndef CONFIG_PARAVIRT #define __cpuid native_cpuid @@ -91,6 +109,7 @@ static inline void native_set_debugreg(int regno, unsigned long value) #define set_debugreg(value, register) \ native_set_debugreg(register, value) +#define set_iopl_mask native_set_iopl_mask #endif /* CONFIG_PARAVIRT */ /* -- cgit v1.2.1