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Rely on CPUID feature only to enable attaching. MTRR are architectural

Browse Source 
and there is no reason to check cpu family or vendor.

Noted by:   royger
Reviewed by: jhb
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
Differential revision:	https://reviews.freebsd.org/D9657
This commit is contained in:
Konstantin Belousov 2017-02-17 22:50:41 +00:00
parent befb38bf9a
commit 83ebde953c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=313903
1 changed files with 0 additions and 10 deletions
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10
sys/x86/x86/x86_mem.c
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@ -721,16 +721,6 @@ x86_mem_drvinit(void *unused)
return;
if (!(cpu_feature & CPUID_MTRR))
return;
if ((cpu_id & 0xf00) != 0x600 && (cpu_id & 0xf00) != 0xf00)
return;
switch (cpu_vendor_id) {
case CPU_VENDOR_INTEL:
case CPU_VENDOR_AMD:
case CPU_VENDOR_CENTAUR:
break;
default:
return;
}
mem_range_softc.mr_op = &x86_mrops;
x86_mrinit(&mem_range_softc);
}