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x86, debugctlmsr: add _on_cpu variants to debugctlmsr functions 

Add functions to get and set the debugctlmsr on different cpus.

Signed-off-by: Markus Metzger <markus.t.metzger@intel.com>
Cc: roland@redhat.com
Cc: eranian@googlemail.com
Cc: oleg@redhat.com
Cc: juan.villacis@intel.com
Cc: ak@linux.jf.intel.com
LKML-Reference: <20090403144554.738772000@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Markus Metzger 2009-04-03 16:43:39 +02:00 committed by Ingo Molnar
parent 15879d0421
commit 35bb7600c1
1 changed files with 27 additions and 0 deletions
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27
arch/x86/include/asm/processor.h
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@ -785,6 +785,21 @@ static inline unsigned long get_debugctlmsr(void)
return debugctlmsr; return debugctlmsr;
} }
static inline unsigned long get_debugctlmsr_on_cpu(int cpu)
{
u64 debugctlmsr = 0;
u32 val1, val2;
#ifndef CONFIG_X86_DEBUGCTLMSR
if (boot_cpu_data.x86 < 6)
return 0;
#endif
rdmsr_on_cpu(cpu, MSR_IA32_DEBUGCTLMSR, &val1, &val2);
debugctlmsr = val1 | ((u64)val2 << 32);
return debugctlmsr;
}
static inline void update_debugctlmsr(unsigned long debugctlmsr) static inline void update_debugctlmsr(unsigned long debugctlmsr)
{ {
#ifndef CONFIG_X86_DEBUGCTLMSR #ifndef CONFIG_X86_DEBUGCTLMSR
@ -794,6 +809,18 @@ static inline void update_debugctlmsr(unsigned long debugctlmsr)
wrmsrl(MSR_IA32_DEBUGCTLMSR, debugctlmsr); wrmsrl(MSR_IA32_DEBUGCTLMSR, debugctlmsr);
} }
static inline void update_debugctlmsr_on_cpu(int cpu,
unsigned long debugctlmsr)
{
#ifndef CONFIG_X86_DEBUGCTLMSR
if (boot_cpu_data.x86 < 6)
return;
#endif
wrmsr_on_cpu(cpu, MSR_IA32_DEBUGCTLMSR,
(u32)((u64)debugctlmsr),
(u32)((u64)debugctlmsr >> 32));
}
/* /*
* from system description table in BIOS. Mostly for MCA use, but * from system description table in BIOS. Mostly for MCA use, but
* others may find it useful: * others may find it useful: