Date: Mon, 9 Nov 2009 23:52:44 +0100 From: Ed Schouten <ed@80386.nl> To: Jun Kuriyama <kuriyama@FreeBSD.org> Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org Subject: Re: svn commit: r199067 - in head/sys: amd64/amd64 i386/i386 Message-ID: <20091109225244.GB64905@hoeg.nl> In-Reply-To: <200911090254.nA92sG1G005921@svn.freebsd.org> References: <200911090254.nA92sG1G005921@svn.freebsd.org>
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--jq0ap7NbKX2Kqbes Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi Jun, * Jun Kuriyama <kuriyama@FreeBSD.org> wrote: > - Add hw.clflush_disable loader tunable to avoid panic (trap 9) at > map_invalidate_cache_range() even if CPU is not Intel. > - This tunable can be set to -1 (default), 0 and 1. -1 is same as > current behavior, which automatically disable CLFLUSH on Intel CPUs > without CPUID_SS (should be occured on Xen only). You can specify 1 > when this panic happened on non-Intel CPUs (such as AMD's). Because > disabling CLFLUSH may reduce performance, you can try with setting 0 > on Intel CPUs without SS to use CLFLUSH feature. > =20 > Reviewed by: kib > Reported by: karl, kuriyama > Related to: kern/138863 Unfortunately it seems to lock up my Intel Core 2 Duo boxes. Systems affected: - Apple MacBook3,1 - Dell SC440 --=20 Ed Schouten <ed@80386.nl> WWW: http://80386.nl/ --jq0ap7NbKX2Kqbes Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (FreeBSD) iEYEARECAAYFAkr4nTwACgkQ52SDGA2eCwX8VgCfZRjMLAy1XnVmZ53rTpZj94zB WAIAnimLe4w887ojteHfFQpE9bruUecF =1chi -----END PGP SIGNATURE----- --jq0ap7NbKX2Kqbes--
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