From: Juergen Gross Date: Mon, 12 Jan 2015 05:15:45 +0000 (+0100) Subject: x86: Don't rely on VMWare emulating PAT MSR correctly X-Git-Tag: fixes-v4.0-rc1~243^2~9 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9d34cfdf4796;p=pandora-kernel.git x86: Don't rely on VMWare emulating PAT MSR correctly VMWare seems not to emulate the PAT MSR correctly: reaeding MSR_IA32_CR_PAT returns 0 even after writing another value to it. Commit bd809af16e3ab triggers this VMWare bug when the kernel is booted as a VMWare guest. Detect this bug and don't use the read value if it is 0. Fixes: bd809af16e3ab "x86: Enable PAT to use cache mode translation tables" Reported-and-tested-by: Jongman Heo Acked-by: Alok N Kataria Signed-off-by: Juergen Gross Link: http://lkml.kernel.org/r/1421039745-14335-1-git-send-email-jgross@suse.com Signed-off-by: Thomas Gleixner --- Reading git-diff-tree failed