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authorJacob Shin <jacob.shin@amd.com>2005-11-05 11:25:53 -0500
committerLinus Torvalds <torvalds@g5.osdl.org>2005-11-14 22:55:13 -0500
commit89b831ef8bf5cfbb357dbc0a2e07700d7f20eec5 (patch)
tree25118081599eab69bd20d1a1b34ba0f8f679f24f /arch/x86_64/kernel/traps.c
parent979edfadbae2286eec5b46143c00e81bca96498e (diff)
[PATCH] x86_64: Support for AMD specific MCE Threshold.
MC4_MISC - DRAM Errors Threshold Register realized under AMD K8 Rev F. This register is used to count correctable and uncorrectable ECC errors that occur during DRAM read operations. The user may interface through sysfs files in order to change the threshold configuration. bank%d/error_count - reads current error count, write to clear. bank%d/interrupt_enable - set/clear interrupt enable. bank%d/threshold_limit - read/write the threshold limit. APIC vector 0xF9 in hw_irq.h. 5 software defined bank ids in mce.h. new apic.c function to setup threshold apic lvt. defaults to interrupt off, count enabled, and threshold limit max. sysfs interface created on /sys/devices/system/threshold. AK: added some ifdefs to make it compile on UP Signed-off-by: Jacob Shin <jacob.shin@amd.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/x86_64/kernel/traps.c')
-rw-r--r--arch/x86_64/kernel/traps.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86_64/kernel/traps.c b/arch/x86_64/kernel/traps.c
index b5e09e6b5536..4a836384dd0f 100644
--- a/arch/x86_64/kernel/traps.c
+++ b/arch/x86_64/kernel/traps.c
@@ -888,6 +888,10 @@ asmlinkage void __attribute__((weak)) smp_thermal_interrupt(void)
888{ 888{
889} 889}
890 890
891asmlinkage void __attribute__((weak)) mce_threshold_interrupt(void)
892{
893}
894
891/* 895/*
892 * 'math_state_restore()' saves the current math information in the 896 * 'math_state_restore()' saves the current math information in the
893 * old math state array, and gets the new ones from the current task 897 * old math state array, and gets the new ones from the current task