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| author | Andreas Herrmann <andreas.herrmann3@amd.com> | 2009-05-08 18:23:50 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-05-11 14:37:36 +0200 |
| commit | 97a52714658cd959a3cfa35c5b6f489859f0204b (patch) | |
| tree | 462708be716e7e1e5216f305dbf243f7c9db1382 /arch/x86/kernel/cpu/cpu_debug.c | |
| parent | 4401da6111ac58f94234417427d06a72c4048c74 (diff) | |
| download | linux-97a52714658cd959a3cfa35c5b6f489859f0204b.tar.bz2 | |
x86: display extended apic registers with print_local_APIC and cpu_debug code
Both print_local_APIC (used when apic=debug kernel param is set) and
cpu_debug code missed support for some extended APIC registers that
I'd like to see.
This adds support to show:
- extended APIC feature register
- extended APIC control register
- extended LVT registers
[ Impact: print more debug info ]
Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Cc: Jaswinder Singh Rajput <jaswinder@kernel.org>
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
LKML-Reference: <20090508162350.GO29045@alberich.amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/cpu/cpu_debug.c')
| -rw-r--r-- | arch/x86/kernel/cpu/cpu_debug.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/arch/x86/kernel/cpu/cpu_debug.c b/arch/x86/kernel/cpu/cpu_debug.c index 46e29ab96c6a..2fc4f6bb9ca5 100644 --- a/arch/x86/kernel/cpu/cpu_debug.c +++ b/arch/x86/kernel/cpu/cpu_debug.c @@ -588,8 +588,20 @@ static void print_apic(void *arg) seq_printf(seq, " TMICT\t\t: %08x\n", apic_read(APIC_TMICT)); seq_printf(seq, " TMCCT\t\t: %08x\n", apic_read(APIC_TMCCT)); seq_printf(seq, " TDCR\t\t: %08x\n", apic_read(APIC_TDCR)); -#endif /* CONFIG_X86_LOCAL_APIC */ + if (boot_cpu_has(X86_FEATURE_EXTAPIC)) { + unsigned int i, v, maxeilvt; + + v = apic_read(APIC_EFEAT); + maxeilvt = (v >> 16) & 0xff; + seq_printf(seq, " EFEAT\t\t: %08x\n", v); + seq_printf(seq, " ECTRL\t\t: %08x\n", apic_read(APIC_ECTRL)); + for (i = 0; i < maxeilvt; i++) { + v = apic_read(APIC_EILVTn(i)); + seq_printf(seq, " EILVT%d\t\t: %08x\n", i, v); + } + } +#endif /* CONFIG_X86_LOCAL_APIC */ seq_printf(seq, "\n MSR\t:\n"); } |