Messages in this thread Patch in this message | | | Date | Fri, 03 Apr 2009 16:43:39 +0200 | From | markus.t.metzger@intel ... | Subject | [patch 07/20] x86, debugctlmsr: add _on_cpu variants to debugctlmsr functions |
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Add functions to get and set the debugctlmsr on different cpus.
Signed-off-by: Markus Metzger <markus.t.metzger@intel.com> --- arch/x86/include/asm/processor.h | 27 27 + 0 - 0 ! 1 file changed, 27 insertions(+)
Index: b/arch/x86/include/asm/processor.h =================================================================== --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -781,6 +781,21 @@ static inline unsigned long get_debugctl 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) { #ifndef CONFIG_X86_DEBUGCTLMSR @@ -790,6 +805,18 @@ static inline void update_debugctlmsr(un 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 * others may find it useful: -- --------------------------------------------------------------------- Intel GmbH Dornacher Strasse 1 85622 Feldkirchen/Muenchen Germany Sitz der Gesellschaft: Feldkirchen bei Muenchen Geschaeftsfuehrer: Douglas Lusk, Peter Gleissner, Hannes Schwaderer Registergericht: Muenchen HRB 47456 Ust.-IdNr. VAT Registration No.: DE129385895 Citibank Frankfurt (BLZ 502 109 00) 600119052
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