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| author | Robert Richter <robert.richter@amd.com> | 2008-07-22 21:08:46 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-26 11:47:59 +0200 |
| commit | 286f571837ba9d67625afd015366d79345abb414 (patch) | |
| tree | 696a0040851a29741574877cf4dcd822641ae9eb | |
| parent | x86: add PCI IDs for AMD Barcelona PCI devices (diff) | |
| download | linux-286f571837ba9d67625afd015366d79345abb414.tar.xz linux-286f571837ba9d67625afd015366d79345abb414.zip | |
x86: apic_*.c: add description to AMD's extended LVT functions
Signed-off-by: Robert Richter <robert.richter@amd.com>
Cc: oprofile-list <oprofile-list@lists.sourceforge.net>
Cc: Barry Kasindorf <barry.kasindorf@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | arch/x86/kernel/apic_32.c | 3 | ||||
| -rw-r--r-- | arch/x86/kernel/apic_64.c | 3 |
2 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/kernel/apic_32.c b/arch/x86/kernel/apic_32.c index d6c898358371..fad94b0decc1 100644 --- a/arch/x86/kernel/apic_32.c +++ b/arch/x86/kernel/apic_32.c @@ -646,6 +646,9 @@ int setup_profiling_timer(unsigned int multiplier) * * Vector mappings are hard coded. On K8 only offset 0 (APIC500) and * MCE interrupts are supported. Thus MCE offset must be set to 0. + * + * If mask=1, the LVT entry does not generate interrupts while mask=0 + * enables the vector. See also the BKDGs. */ #define APIC_EILVT_LVTOFF_MCE 0 diff --git a/arch/x86/kernel/apic_64.c b/arch/x86/kernel/apic_64.c index 7f1f030da7ee..42bf69f8bc8e 100644 --- a/arch/x86/kernel/apic_64.c +++ b/arch/x86/kernel/apic_64.c @@ -205,6 +205,9 @@ static void __setup_APIC_LVTT(unsigned int clocks, int oneshot, int irqen) * * Vector mappings are hard coded. On K8 only offset 0 (APIC500) and * MCE interrupts are supported. Thus MCE offset must be set to 0. + * + * If mask=1, the LVT entry does not generate interrupts while mask=0 + * enables the vector. See also the BKDGs. */ #define APIC_EILVT_LVTOFF_MCE 0 |