Date: Mon, 8 Feb 2010 21:46:51 +0200 From: Kostik Belousov <kostikbel@gmail.com> To: John Baldwin <jhb@freebsd.org> Cc: Tom McLaughlin <tmclaugh@sdf.lonestar.org>, freebsd-stable@freebsd.org Subject: Re: Recent MFC to 7 causes crash on VMware ESXi Message-ID: <20100208194651.GP9991@deviant.kiev.zoral.com.ua> In-Reply-To: <201002081442.33579.jhb@freebsd.org> References: <4B6B89E7.8030002@sdf.lonestar.org> <201002081315.06445.jhb@freebsd.org> <20100208185146.GO9991@deviant.kiev.zoral.com.ua> <201002081442.33579.jhb@freebsd.org>
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--3loezlmesXOUD0D5 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Feb 08, 2010 at 02:42:33PM -0500, John Baldwin wrote: > On Monday 08 February 2010 1:51:46 pm Kostik Belousov wrote: > > On Mon, Feb 08, 2010 at 01:15:06PM -0500, John Baldwin wrote: > > > > > I thought the old condition only happened under VMware? > > > >=20 > > > > Reports I got where from XEN. > > >=20 > > > Ok. Those would also be covered under the vm_guest test as it is > > > non-zero for Xen, VMware, Parallels, etc. > >=20 > > What I said was suggestion and not objection. Ignore me. >=20 > Were there any reports of problems with Intel CPUs that weren't under a= =20 > virtualization system? If so, we should keep the test, but my understand= ing=20 > was that the test was only true under specific virtualization environment= s. Forcing Intel CPU to use CLFLUSH, by clearing SS bit, caused reserved trap on Pentium M at least. My concern is that if Intel makes some stripped-down CPU with CLFLUSH but without SS logic, we would be affected. --3loezlmesXOUD0D5 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (FreeBSD) iEYEARECAAYFAktwaioACgkQC3+MBN1Mb4j7NQCg2vzX6SmnuV/PvJFHrCpaBhL7 pAQAoI1mFd+HsRCaNvUPtosZ3XRldJ02 =/ChU -----END PGP SIGNATURE----- --3loezlmesXOUD0D5--
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