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Juergen Gross 9d34cfdf47 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 bd809af16e 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: bd809af16e "x86: Enable PAT to use cache mode translation tables"
Reported-and-tested-by: Jongman Heo <jongman.heo@samsung.com>
Acked-by: Alok N Kataria <akataria@vmware.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Link: http://lkml.kernel.org/r/1421039745-14335-1-git-send-email-jgross@suse.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
 		2015-01-20 14:33:45 +01:00
..
boot x86, boot: Skip relocs when load address unchanged 2015-01-20 12:37:23 +01:00
configs x86/kconfig/defconfig: Enable CONFIG_FHANDLE=y 2014-12-08 12:04:17 +01:00
crypto crypto: sha-mb - Add avx2_supported check. 2015-01-05 21:35:02 +11:00
ia32 x86: hook up execveat system call 2014-12-13 12:42:51 -08:00
include x86/xen: Override ACPI IRQ management callback __acpi_unregister_gsi 2015-01-20 11:44:41 +01:00
kernel x86, irq: Properly tag virtualization entry in /proc/interrupts 2015-01-20 12:37:23 +01:00
kvm kvm: x86: drop severity of "generation wraparound" message 2014-12-27 21:52:28 +01:00
lguest x86: Avoid building unused IRQ entry stubs 2014-12-16 14:08:14 +01:00
lib x86: Fix off-by-one in instruction decoder 2015-01-09 11:12:26 +01:00
math-emu asmlinkage, x86: Add explicit __visible to arch/x86/* 2014-05-05 16:07:44 -07:00
mm x86: Don't rely on VMWare emulating PAT MSR correctly 2015-01-20 14:33:45 +01:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-12-10 15:48:20 -05:00
oprofile percpu: Resolve ambiguities in __get_cpu_var/cpumask_var_t 2014-08-28 08:58:57 -04:00
pci x86/xen: Override ACPI IRQ management callback __acpi_unregister_gsi 2015-01-20 11:44:41 +01:00
platform Merge branch 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-12-19 14:02:02 -08:00
power nosave: consolidate __nosave_{begin,end} in <asm/sections.h> 2014-10-09 22:26:04 -04:00
purgatory Merge branches 'x86-build-for-linus', 'x86-cleanups-for-linus' and 'x86-debug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-12-10 12:35:46 -08:00
realmode x86/build: Supress realmode.bin is up to date message 2014-04-16 15:17:24 +02:00
syscalls x86: hook up execveat system call 2014-12-13 12:42:51 -08:00
tools Merge branch 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-12-10 12:10:24 -08:00
um x86, um: actually mark system call tables readonly 2015-01-04 14:21:25 +01:00
vdso x86_64, vdso: Fix the vdso address randomization algorithm 2014-12-20 16:56:57 -08:00
video
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xen xen: bug fixes for 3.19-rc4 2015-01-14 08:07:42 +13:00
.gitignore x86/build: Add arch/x86/purgatory/ make generated files to gitignore 2014-10-09 09:29:46 +02:00
Kbuild kexec: create a new config option CONFIG_KEXEC_FILE for new syscall 2014-08-29 16:28:16 -07:00
Kconfig Merge branch 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-12-19 14:02:02 -08:00
Kconfig.cpu
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Kconfig.debug
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Makefile Merge branch 'x86-build-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-10-13 18:17:33 +02:00
Makefile.um
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Makefile_32.cpu
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