Paolo Bonzini c065b9947b KVM: x86: emulate #UD while in guest mode ...

[ Upstream commit bd89525a82 ]

This reverts commits ae1f576707
and ac9b305caa.

If the hardware doesn't support MOVBE, but L0 sets CPUID.01H:ECX.MOVBE
in L1's emulated CPUID information, then L1 is likely to pass that
CPUID bit through to L2. L2 will expect MOVBE to work, but if L1
doesn't intercept #UD, then any MOVBE instruction executed in L2 will
raise #UD, and the exception will be delivered in L2.

Commit ac9b305caa is a better and more
complete version of ae1f576707 ("KVM: nVMX: Do not emulate #UD while
in guest mode"); however, neither considers the above case.

Suggested-by: Jim Mattson <jmattson@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2018-02-03 17:39:18 +01:00

..

alpha

alpha/PCI: Fix noname IRQ level detection

2018-01-23 19:58:19 +01:00

arc

ARC: uaccess: dont use "l" gcc inline asm constraint modifier

2018-01-10 09:31:21 +01:00

arm

ARM: dts: NSP: Fix PPI interrupt types

2018-02-03 17:39:16 +01:00

arm64

bpf, arm64: fix stack_depth tracking in combination with tail calls

2018-01-31 14:03:50 +01:00

blackfin

pinctrl: adi2: Fix Kconfig build problem

2017-12-20 10:10:34 +01:00

c6x

License cleanup: add SPDX license identifier to uapi header files with a license

2017-11-02 11:20:11 +01:00

cris

License cleanup: add SPDX license identifier to uapi header files with no license

2017-11-02 11:19:54 +01:00

frv

License cleanup: add SPDX license identifier to uapi header files with a license

2017-11-02 11:20:11 +01:00

h8300

License cleanup: add SPDX license identifier to uapi header files with no license

2017-11-02 11:19:54 +01:00

hexagon

License cleanup: add SPDX license identifier to uapi header files with a license

2017-11-02 11:20:11 +01:00

ia64

Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2017-11-05 12:14:50 -08:00

m32r

License cleanup: add SPDX license identifier to uapi header files with a license

2017-11-02 11:20:11 +01:00

m68k

m68k: fix ColdFire node shift size calculation

2017-12-10 13:40:39 +01:00

metag

License cleanup: add SPDX license identifier to uapi header files with a license

2017-11-02 11:20:11 +01:00

microblaze

License cleanup: add SPDX license identifier to uapi header files with a license

2017-11-02 11:20:11 +01:00

mips

KVM: Let KVM_SET_SIGNAL_MASK work as advertised

2018-02-03 17:39:06 +01:00

mn10300

License cleanup: add SPDX license identifier to uapi header files with a license

2017-11-02 11:20:11 +01:00

nios2

License cleanup: add SPDX license identifier to uapi header files with a license

2017-11-02 11:20:11 +01:00

openrisc

License cleanup: add SPDX license identifier to uapi header files with a license

2017-11-02 11:20:11 +01:00

parisc

parisc: qemu idle sleep support

2018-01-10 09:31:22 +01:00

powerpc

KVM: Let KVM_SET_SIGNAL_MASK work as advertised

2018-02-03 17:39:06 +01:00

s390

KVM: Let KVM_SET_SIGNAL_MASK work as advertised

2018-02-03 17:39:06 +01:00

score

License cleanup: add SPDX license identifier to uapi header files with no license

2017-11-02 11:19:54 +01:00

sh

License cleanup: add SPDX license identifier to uapi header files with a license

2017-11-02 11:20:11 +01:00

sparc

sparc64: repair calling incorrect hweight function from stubs

2018-01-02 20:31:13 +01:00

tile

fcntl: don't cap l_start and l_end values for F_GETLK64 in compat syscall

2017-12-17 15:07:59 +01:00

um

arch, mm: Allow arch_dup_mmap() to fail

2017-12-29 17:53:43 +01:00

unicore32

arch, mm: Allow arch_dup_mmap() to fail

2017-12-29 17:53:43 +01:00

x86

KVM: x86: emulate #UD while in guest mode

2018-02-03 17:39:18 +01:00

xtensa

License cleanup: add SPDX license identifier to uapi header files with a license

2017-11-02 11:20:11 +01:00

.gitignore

…

Kconfig

kprobes: Use synchronize_rcu_tasks() for optprobe with CONFIG_PREEMPT=y

2017-12-10 13:40:40 +01:00