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author | Yinghai Lu <yhlu.kernel@gmail.com> | 2008-09-04 21:09:46 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-09-04 21:09:46 +0200 |
commit | a0854a46c5eb82588126421a9cbceb973384a644 (patch) | |
tree | 9164ff52bd68d5b7aeb1afbef37caa9766ea9a1f /arch/x86/kernel/cpu/common.c | |
parent | 10a434fcb23a57c385177a0086955fae01003f64 (diff) | |
download | op-kernel-dev-a0854a46c5eb82588126421a9cbceb973384a644.zip op-kernel-dev-a0854a46c5eb82588126421a9cbceb973384a644.tar.gz |
x86: make 32bit support show_msr like 64 bit
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/cpu/common.c')
-rw-r--r-- | arch/x86/kernel/cpu/common.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index ee1044c..a79cf5c 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -616,6 +616,49 @@ void __cpuinit identify_secondary_cpu(struct cpuinfo_x86 *c) mtrr_ap_init(); } +struct msr_range { + unsigned min; + unsigned max; +}; + +static struct msr_range msr_range_array[] __cpuinitdata = { + { 0x00000000, 0x00000418}, + { 0xc0000000, 0xc000040b}, + { 0xc0010000, 0xc0010142}, + { 0xc0011000, 0xc001103b}, +}; + +static void __cpuinit print_cpu_msr(void) +{ + unsigned index; + u64 val; + int i; + unsigned index_min, index_max; + + for (i = 0; i < ARRAY_SIZE(msr_range_array); i++) { + index_min = msr_range_array[i].min; + index_max = msr_range_array[i].max; + for (index = index_min; index < index_max; index++) { + if (rdmsrl_amd_safe(index, &val)) + continue; + printk(KERN_INFO " MSR%08x: %016llx\n", index, val); + } + } +} + +static int show_msr __cpuinitdata; +static __init int setup_show_msr(char *arg) +{ + int num; + + get_option(&arg, &num); + + if (num > 0) + show_msr = num; + return 1; +} +__setup("show_msr=", setup_show_msr); + static __init int setup_noclflush(char *arg) { setup_clear_cpu_cap(X86_FEATURE_CLFLSH); @@ -644,6 +687,14 @@ void __cpuinit print_cpu_info(struct cpuinfo_x86 *c) printk(KERN_CONT " stepping %02x\n", c->x86_mask); else printk(KERN_CONT "\n"); + +#ifdef CONFIG_SMP + if (c->cpu_index < show_msr) + print_cpu_msr(); +#else + if (show_msr) + print_cpu_msr(); +#endif } static __init int setup_disablecpuid(char *arg) |