Thomas Gleixner a74cfffb03 x86/speculation: Rework SMT state change ... arch_smt_update() is only called when the sysfs SMT control knob is changed. This means that when SMT is enabled in the sysfs control knob the system is considered to have SMT active even if all siblings are offline. To allow finegrained control of the speculation mitigations, the actual SMT state is more interesting than the fact that siblings could be enabled. Rework the code, so arch_smt_update() is invoked from each individual CPU hotplug function, and simplify the update function while at it. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Andy Lutomirski <luto@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Jiri Kosina <jkosina@suse.cz> Cc: Tom Lendacky <thomas.lendacky@amd.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: David Woodhouse <dwmw@amazon.co.uk> Cc: Tim Chen <tim.c.chen@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Casey Schaufler <casey.schaufler@intel.com> Cc: Asit Mallick <asit.k.mallick@intel.com> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Jon Masters <jcm@redhat.com> Cc: Waiman Long <longman9394@gmail.com> Cc: Greg KH <gregkh@linuxfoundation.org> Cc: Dave Stewart <david.c.stewart@intel.com> Cc: Kees Cook <keescook@chromium.org> Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/20181125185004.521974984@linutronix.de		2018-11-28 11:57:07 +01:00
..
autogroup.h
clock.h
coredump.h
cpufreq.h
cputime.h
deadline.h
debug.h
hotplug.h
idle.h
init.h
isolation.h
jobctl.h
loadavg.h	sched: loadavg: make calc_load_n() public	2018-10-26 16:26:32 -07:00
mm.h	fs: fsnotify: account fsnotify metadata to kmemcg	2018-08-17 16:20:30 -07:00
nohz.h
numa_balancing.h
prio.h
rt.h
signal.h	signal: Distinguish between kernel_siginfo and siginfo	2018-10-03 16:47:43 +02:00
smt.h	x86/speculation: Rework SMT state change	2018-11-28 11:57:07 +01:00
stat.h	cpuidle: menu: Remove get_loadavg() from the performance multiplier	2018-10-25 16:49:27 +02:00
sysctl.h	kernel/hung_task.c: allow to set checking interval separately from timeout	2018-08-22 10:52:47 -07:00
task_stack.h
task.h
topology.h	sched/topology: Add SD_ASYM_CPUCAPACITY flag detection	2018-09-10 11:05:45 +02:00
user.h	userns: use refcount_t for reference counting instead atomic_t	2018-08-22 10:52:46 -07:00
wake_q.h
xacct.h