diff options
| author | Cyrill Gorcunov <gorcunov@openvz.org> | 2009-11-16 18:14:26 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-11-16 16:37:10 +0100 |
| commit | e79c65a97c01d5da4317f44f9f98b3814e091a43 (patch) | |
| tree | ce3ec55f23a5984a6b0bb399ac7ca139cd61c0bb /arch/x86/include/asm/apicdef.h | |
| parent | 200a9ae2801bc725f2c41ab13f6e0fb1610d2fb6 (diff) | |
x86: io-apic: IO-APIC MMIO should not fail on resource insertion
If IO-APIC base address is 1K aligned we should not fail
on resourse insertion procedure. For this sake we define
IO_APIC_SLOT_SIZE constant which should cover all IO-APIC
direct accessible registers.
An example of a such configuration is there
http://marc.info/?l=linux-kernel&m=118114792006520
|
| Quoting the message
|
| IOAPIC[0]: apic_id 2, version 32, address 0xfec00000, GSI 0-23
| IOAPIC[1]: apic_id 3, version 32, address 0xfec80000, GSI 24-47
| IOAPIC[2]: apic_id 4, version 32, address 0xfec80400, GSI 48-71
| IOAPIC[3]: apic_id 5, version 32, address 0xfec84000, GSI 72-95
| IOAPIC[4]: apic_id 8, version 32, address 0xfec84400, GSI 96-119
|
Reported-by: "Maciej W. Rozycki" <macro@linux-mips.org>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Acked-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <20091116151426.GC5653@lenovo>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/include/asm/apicdef.h')
| -rw-r--r-- | arch/x86/include/asm/apicdef.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/include/asm/apicdef.h b/arch/x86/include/asm/apicdef.h index 3b62da926de9..7fe3b3060f08 100644 --- a/arch/x86/include/asm/apicdef.h +++ b/arch/x86/include/asm/apicdef.h @@ -11,6 +11,12 @@ #define IO_APIC_DEFAULT_PHYS_BASE 0xfec00000 #define APIC_DEFAULT_PHYS_BASE 0xfee00000 +/* + * This is the IO-APIC register space as specified + * by Intel docs: + */ +#define IO_APIC_SLOT_SIZE 1024 + #define APIC_ID 0x20 #define APIC_LVR 0x30 |