Juergen Gross def9331a12 x86/amd: don't set X86_BUG_SYSRET_SS_ATTRS when running under Xen ... When running as Xen pv guest X86_BUG_SYSRET_SS_ATTRS must not be set on AMD cpus. This bug/feature bit is kind of special as it will be used very early when switching threads. Setting the bit and clearing it a little bit later leaves a critical window where things can go wrong. This time window has enlarged a little bit by using setup_clear_cpu_cap() instead of the hypervisor's set_cpu_features callback. It seems this larger window now makes it rather easy to hit the problem. The proper solution is to never set the bit in case of Xen. Signed-off-by: Juergen Gross <jgross@suse.com> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Juergen Gross <jgross@suse.com>		2017-05-11 15:55:14 +02:00
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boot	Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-05-01 23:54:56 -07:00
configs	Merge branch 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-05-01 20:51:12 -07:00
crypto	crypto: sha512-mb - Protect sha512 mb ctx mgr access	2017-02-11 17:50:41 +08:00
entry	Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-05-01 23:54:56 -07:00
events	perf/x86: Fix spurious NMI with PEBS Load Latency event	2017-04-14 10:31:39 +02:00
hyperv	x86/vdso: Add VCLOCK_HVCLOCK vDSO clock read method	2017-03-11 14:47:28 +01:00
ia32	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h>	2017-03-02 08:42:36 +01:00
include	xen: Revert commits da72ff5bfc and 72a9b18629	2017-05-02 11:18:05 +02:00
kernel	x86/amd: don't set X86_BUG_SYSRET_SS_ATTRS when running under Xen	2017-05-11 15:55:14 +02:00
kvm	Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-05-01 23:54:56 -07:00
lguest	Merge branch 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-05-01 20:51:12 -07:00
lib	Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-05-01 22:07:51 -07:00
math-emu	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
mm	Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-05-01 23:54:56 -07:00
net	bpf: fix unlocking of jited image when module ronx not set	2017-02-21 13:30:14 -05:00
oprofile	x86/oprofile/nmi: Convert to hotplug state machine	2016-11-22 23:34:43 +01:00
pci	xen: Revert commits da72ff5bfc and 72a9b18629	2017-05-02 11:18:05 +02:00
platform	Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-05-01 23:54:56 -07:00
power	Merge branch 'x86/boot' into x86/mm, to avoid conflict	2017-04-11 08:56:05 +02:00
purgatory	kasan: do not sanitize kexec purgatory	2017-03-31 17:13:30 -07:00
ras	RAS: Add a Corrected Errors Collector	2017-03-28 08:54:48 +02:00
realmode	x86/build: Don't use $(LINUXINCLUDE) twice	2016-11-28 07:49:17 +01:00
tools	x86/tools: Fix gcc-7 warning in relocs.c	2016-12-19 11:50:24 +01:00
um	Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-05-01 22:07:51 -07:00
video
xen	x86/amd: don't set X86_BUG_SYSRET_SS_ATTRS when running under Xen	2017-05-11 15:55:14 +02:00
.gitignore
Kbuild	Drivers: hv vmbus: Move Hypercall page setup out of common code	2017-01-19 11:42:07 +01:00
Kconfig	Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-05-01 23:54:56 -07:00
Kconfig.cpu
Kconfig.debug	usb/early: Add driver for xhci debug capability	2017-03-21 12:30:05 +01:00
Makefile	Merge branch 'x86-build-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-05-01 22:33:43 -07:00
Makefile_32.cpu	x86/build: Mostly disable '-maccumulate-outgoing-args'	2017-03-30 11:53:04 +02:00
Makefile.um