x86: display extended apic registers with print_local_APIC and cpu_debug code

[cascardo/linux.git] / arch / x86 / kernel / apic / io_apic.c

diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 2afe145..65b824c 100644 (file)
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -1739,7 +1739,7 @@ __apicdebuginit(void) print_APIC_bitfield(int base)
 
 __apicdebuginit(void) print_local_APIC(void *dummy)
 {
-       unsigned int v, ver, maxlvt;
+       unsigned int i, v, ver, maxlvt;
        u64 icr;
 
        if (apic_verbosity == APIC_QUIET)
@@ -1827,6 +1827,18 @@ __apicdebuginit(void) print_local_APIC(void *dummy)
        printk(KERN_DEBUG "... APIC TMCCT: %08x\n", v);
        v = apic_read(APIC_TDCR);
        printk(KERN_DEBUG "... APIC TDCR: %08x\n", v);
+
+       if (boot_cpu_has(X86_FEATURE_EXTAPIC)) {
+               v = apic_read(APIC_EFEAT);
+               maxlvt = (v >> 16) & 0xff;
+               printk(KERN_DEBUG "... APIC EFEAT: %08x\n", v);
+               v = apic_read(APIC_ECTRL);
+               printk(KERN_DEBUG "... APIC ECTRL: %08x\n", v);
+               for (i = 0; i < maxlvt; i++) {
+                       v = apic_read(APIC_EILVTn(i));
+                       printk(KERN_DEBUG "... APIC EILVT%d: %08x\n", i, v);
+               }
+       }
        printk("\n");
 }