Paolo Bonzini 4ff6f8e61e KVM: emulate: fix CMPXCHG8B on 32-bit hosts ... This has been broken for a long time: it broke first in 2.6.35, then was almost fixed in 2.6.36 but this one-liner slipped through the cracks. The bug shows up as an infinite loop in Windows 7 (and newer) boot on 32-bit hosts without EPT. Windows uses CMPXCHG8B to write to page tables, which causes a page fault if running without EPT; the emulator is then called from kvm_mmu_page_fault. The loop then happens if the higher 4 bytes are not 0; the common case for this is that the NX bit (bit 63) is 1. Fixes: 6550e1f165 Fixes: 16518d5ada Cc: stable@vger.kernel.org # 2.6.35+ Reported-by: Erik Rull <erik.rull@rdsoftware.de> Tested-by: Erik Rull <erik.rull@rdsoftware.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2015-02-23 22:28:48 +01:00
..
boot	Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-02-21 10:41:29 -08:00
configs	x86/kconfig/defconfig: Enable CONFIG_FHANDLE=y	2014-12-08 12:04:17 +01:00
crypto	Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2015-02-14 09:47:01 -08:00
ia32	all arches, signal: move restart_block to struct task_struct	2015-02-12 18:54:12 -08:00
include	Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-02-21 11:12:07 -08:00
kernel	Merge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-02-21 10:45:03 -08:00
kvm	KVM: emulate: fix CMPXCHG8B on 32-bit hosts	2015-02-23 22:28:48 +01:00
lguest	lguest: don't look in console features to find emerg_wr.	2015-02-13 17:15:51 +10:30
lib	x86_64: kasan: add interceptors for memset/memmove/memcpy functions	2015-02-13 21:21:41 -08:00
math-emu	asmlinkage, x86: Add explicit __visible to arch/x86/*	2014-05-05 16:07:44 -07:00
mm	Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-02-21 10:41:29 -08:00
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	ACPI and power management updates for v3.20-rc1	2015-02-10 15:09:41 -08:00
platform	Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-02-21 11:12:07 -08:00
power	x86: Store a per-cpu shadow copy of CR4	2015-02-04 12:10:42 +01:00
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	Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-02-16 14:58:12 -08:00
syscalls	x86: hook up execveat system call	2014-12-13 12:42:51 -08:00
tools	x86, build: replace Perl script with Shell script	2015-01-26 13:37:18 -08:00
um	all arches, signal: move restart_block to struct task_struct	2015-02-12 18:54:12 -08:00
vdso	x86_64: add KASan support	2015-02-13 21:21:41 -08:00
video
xen	Merge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-02-21 10:45:03 -08:00
.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-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-02-21 11:12:07 -08:00
Kconfig.cpu
Kconfig.debug	x86/intel/quark: Add Isolated Memory Regions for Quark X1000	2015-02-18 23:22:47 +01:00
Makefile	x86/raid6: correctly check for assembler capabilities	2015-02-04 08:35:51 +11:00
Makefile_32.cpu
Makefile.um	kbuild: do not add $(call ...) to invoke cc-version or cc-fullversion	2015-01-09 17:25:44 +01:00