Thomas Gleixner ed5c41d30e x86: MCE: Add raw_lock conversion again ... Commit ea431643d6 ("x86/mce: Fix CMCI preemption bugs") breaks RT by the completely unrelated conversion of the cmci_discover_lock to a regular (non raw) spinlock. This lock was annotated in commit 59d958d2c7 ("locking, x86: mce: Annotate cmci_discover_lock as raw") with a proper explanation why. The argument for converting the lock back to a regular spinlock was: - it does percpu ops without disabling preemption. Preemption is not disabled due to the mistaken use of a raw spinlock. Which is complete nonsense. The raw_spinlock is disabling preemption in the same way as a regular spinlock. In mainline spinlock maps to raw_spinlock, in RT spinlock becomes a "sleeping" lock. raw_spinlock has on RT exactly the same semantics as in mainline. And because this lock is taken in non preemptible context it must be raw on RT. Undo the locking brainfart. Reported-by: Clark Williams <williams@redhat.com> Reported-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2014-08-05 17:34:33 -07:00
..
Makefile	ACPI, APEI, Generic Hardware Error Source memory error support	2010-05-19 22:41:16 -04:00
mce_amd.c	x86: delete __cpuinit usage from all x86 files	2013-07-14 19:36:56 -04:00
mce_intel.c	x86: MCE: Add raw_lock conversion again	2014-08-05 17:34:33 -07:00
mce-apei.c	ACPI, APEI, GHES: Do not report only correctable errors with SCI	2013-12-21 13:31:06 +01:00
mce-inject.c	x86, mce: Fix "braodcast" typo	2013-06-05 11:59:17 +02:00
mce-internal.h	mce: acpi/apei: Honour Firmware First for MCA banks listed in APEI HEST CMC	2013-07-08 11:53:01 -07:00
mce-severity.c	x86/mce: Fix mce regression from recent cleanup	2013-07-29 11:23:27 -07:00
mce.c	x86, MCE: Robustify mcheck_init_device	2014-06-24 15:17:01 +02:00
p5.c	x86: Delete non-required instances of include <linux/init.h>	2014-01-06 21:25:18 -08:00
therm_throt.c	asmlinkage, x86: Add explicit __visible to arch/x86/*	2014-05-05 16:07:44 -07:00
threshold.c	asmlinkage, x86: Add explicit __visible to arch/x86/*	2014-05-05 16:07:44 -07:00
winchip.c	x86: Delete non-required instances of include <linux/init.h>	2014-01-06 21:25:18 -08:00