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update comment describing topo_probe_amd()

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MFC after:	2 weeks
MFC with:	r316017
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avg 2017-03-27 11:04:57 +00:00
parent 4c8fc1ac5e
commit f03ea73bb5
1 changed files with 3 additions and 4 deletions
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7
sys/x86/x86/mp_x86.c
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@ -227,11 +227,10 @@ add_deterministic_cache(int type, int level, int share_count)
* Determine topology of processing units and caches for AMD CPUs.
* See:
* - AMD CPUID Specification (Publication # 25481)
* - BKDG For AMD Family 10h Processors (Publication # 31116), section 2.15
* - BKDG for AMD NPT Family 0Fh Processors (Publication # 32559)
* XXX At the moment the code does not recognize grouping of AMD CMT threads,
* if supported, into cores, so each thread is treated as being in its own
* core. In other words, each logical CPU is considered to be a core.
* - BKDG For AMD Family 10h Processors (Publication # 31116)
* - BKDG For AMD Family 15h Models 00h-0Fh Processors (Publication # 42301)
* - BKDG For AMD Family 16h Models 00h-0Fh Processors (Publication # 48751)
*/
static void
topo_probe_amd(void)