lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

x86, amd: Extract compute unit information for AMD CPUs

Browse Source 
Get compute unit information from CPUID Fn8000_001E_EBX.
(See AMD CPUID Specification - publication # 25481, revision 2.34,
September 2010.)

Note that each core on a compute unit still has a core_id of its own.

Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
LKML-Reference: <20100930123857.GE20545@loge.amd.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
This commit is contained in:
Andreas Herrmann
2010-09-30 14:38:57 +02:00
committed by H. Peter Anvin
parent 23588c38a8
commit 6057b4d331
2 changed files with 17 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/x86/include/asm/processor.h
View File

@@ -110,6 +110,8 @@ struct cpuinfo_x86 {
u16 phys_proc_id;
/* Core id: */
u16 cpu_core_id;
/* Compute unit id */
u8 compute_unit_id;
/* Index into per_cpu list: */
u16 cpu_index;
#endif