Date: Wed, 23 Jun 1999 20:48:26 -0700 (PDT) From: Brian Feldman <green@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/i386/i386 identcpu.c src/sys/i386/isa clock.c Message-ID: <199906240348.UAA02888@freefall.freebsd.org>
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green 1999/06/23 20:48:26 PDT
Modified files:
sys/i386/i386 identcpu.c
sys/i386/isa clock.c
Log:
This commit gives support for the Rise mP6 CPU. It has two changes:
1. Rise is recognized in identdcpu.c.
2. The TSC is not written to. A workaround for the CPU bug is being
applied to clock.c (the bug being that the mP6 has TSC enabled
in its CPUID-capabilities, but it only supports reading it. If we
try to write to it (MSR 16), a GPF occurs.) The new behavior is that
FreeBSD will _not_ zero the TSC. Instead, we do a bit of 64-bit
arithmetic.
Reviewed by: msmith
Obtained from: unfurl & msmith
Revision Changes Path
1.64 +12 -2 src/sys/i386/i386/identcpu.c
1.137 +7 -5 src/sys/i386/isa/clock.c
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