mirror of
https://github.com/torvalds/linux.git
synced 2024-11-08 21:21:47 +00:00
8abc3122aa
Add information about LVT offset assignments to better debug firmware bugs related to this. See following examples. # dmesg | grep -i 'offset\|ibs' LVT offset 0 assigned for vector 0xf9 [Firmware Bug]: cpu 0, try to use APIC500 (LVT offset 0) for vector 0x10400, but the register is already in use for vector 0xf9 on another cpu [Firmware Bug]: cpu 0, IBS interrupt offset 0 not available (MSRC001103A=0x0000000000000100) Failed to setup IBS, -22 In this case the BIOS assigns both offsets for MCE (0xf9) and IBS (0x400) vectors to offset 0, which is why the second APIC setup (IBS) failed. With correct setup you get: # dmesg | grep -i 'offset\|ibs' LVT offset 0 assigned for vector 0xf9 LVT offset 1 assigned for vector 0x400 IBS: LVT offset 1 assigned perf: AMD IBS detected (0x00000007) oprofile: AMD IBS detected (0x00000007) Note: The vector includes also the message type to handle also NMIs (0x400). In the firmware bug message the format is the same as of the APIC500 register and includes the mask bit (bit 16) in addition. Signed-off-by: Robert Richter <robert.richter@amd.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> |
||
|---|---|---|
| .. | ||
| apic_flat_64.c | ||
| apic_noop.c | ||
| apic_numachip.c | ||
| apic.c | ||
| bigsmp_32.c | ||
| es7000_32.c | ||
| hw_nmi.c | ||
| io_apic.c | ||
| ipi.c | ||
| Makefile | ||
| numaq_32.c | ||
| probe_32.c | ||
| probe_64.c | ||
| summit_32.c | ||
| x2apic_cluster.c | ||
| x2apic_phys.c | ||
| x2apic_uv_x.c | ||