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x86: move the definition of set_iopl_mask to common header

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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 <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Glauber de Oliveira Costa 2008-01-30 13:31:27 +01:00 committed by Ingo Molnar
parent 1b46cbe0cc
commit 62d7d7ed11
2 changed files with 19 additions and 17 deletions
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19
include/asm-x86/processor.h
View File

@ -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 */
/*

17
include/asm-x86/processor_32.h
View File

@ -455,21 +455,6 @@ static inline void native_load_sp0(struct tss_struct *tss, struct thread_struct
wrmsr(MSR_IA32_SYSENTER_CS, thread->sysenter_cs, 0);
}
}
/*
* Set IOPL bits in EFLAGS from given mask
*/
static inline void native_set_iopl_mask(unsigned mask)
{
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));
}
#ifdef CONFIG_PARAVIRT
#include <asm/paravirt.h>
@ -479,8 +464,6 @@ static inline void load_sp0(struct tss_struct *tss, struct thread_struct *thread
{
native_load_sp0(tss, thread);
}
#define set_iopl_mask native_set_iopl_mask
#endif /* CONFIG_PARAVIRT */
/* generic versions from gas */