Date: Thu, 1 Oct 2009 12:52:48 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/amd64/amd64 initcpu.c src/sys/i386/i386 initcpu.c Message-ID: <200910011253.n91CrTv3011453@repoman.freebsd.org>
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kib 2009-10-01 12:52:48 UTC
FreeBSD src repository
Modified files:
sys/amd64/amd64 initcpu.c
sys/i386/i386 initcpu.c
Log:
SVN rev 197663 on 2009-10-01 12:52:48Z by kib
As a workaround, for Intel CPUs, do not use CLFLUSH in
pmap_invalidate_cache_range() when self-snoop is apparently not reported
in cpu features. We get a reserved trap when clflushing APIC registers
window.
XEN in full system virtualization mode removes self-snoop from CPU
features, making this a problem.
Tested by: csjp
Reviewed by: alc
MFC after: 3 days
Revision Changes Path
1.56 +6 -0 src/sys/amd64/amd64/initcpu.c
1.63 +6 -0 src/sys/i386/i386/initcpu.c
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