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Groups > linux.kernel > #1211943

[PATCH 3.12 60/82] arch: Introduce smp_load_acquire(), smp_store_release()

From Jiri Slaby <jslaby@suse.cz>
Newsgroups linux.kernel
Subject [PATCH 3.12 60/82] arch: Introduce smp_load_acquire(), smp_store_release()
Date 2015-08-24 11:20 +0200
Message-ID <q0W54-3om-15@gated-at.bofh.it> (permalink)
References <q0VVn-3cH-1@gated-at.bofh.it>
Organization linux.* mail to news gateway

Show all headers | View raw


From: Peter Zijlstra <peterz@infradead.org>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 47933ad41a86a4a9b50bed7c9b9bd2ba242aac63 upstream.

A number of situations currently require the heavyweight smp_mb(),
even though there is no need to order prior stores against later
loads.  Many architectures have much cheaper ways to handle these
situations, but the Linux kernel currently has no portable way
to make use of them.

This commit therefore supplies smp_load_acquire() and
smp_store_release() to remedy this situation.  The new
smp_load_acquire() primitive orders the specified load against
any subsequent reads or writes, while the new smp_store_release()
primitive orders the specifed store against any prior reads or
writes.  These primitives allow array-based circular FIFOs to be
implemented without an smp_mb(), and also allow a theoretical
hole in rcu_assign_pointer() to be closed at no additional
expense on most architectures.

In addition, the RCU experience transitioning from explicit
smp_read_barrier_depends() and smp_wmb() to rcu_dereference()
and rcu_assign_pointer(), respectively resulted in substantial
improvements in readability.  It therefore seems likely that
replacing other explicit barriers with smp_load_acquire() and
smp_store_release() will provide similar benefits.  It appears
that roughly half of the explicit barriers in core kernel code
might be so replaced.

[Changelog by PaulMck]

Reviewed-by: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Cc: Michael Ellerman <michael@ellerman.id.au>
Cc: Michael Neuling <mikey@neuling.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Victor Kaplansky <VICTORK@il.ibm.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Link: http://lkml.kernel.org/r/20131213150640.908486364@infradead.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 arch/arm/include/asm/barrier.h      | 15 +++++++++++
 arch/arm64/include/asm/barrier.h    | 50 +++++++++++++++++++++++++++++++++++++
 arch/ia64/include/asm/barrier.h     | 23 +++++++++++++++++
 arch/metag/include/asm/barrier.h    | 15 +++++++++++
 arch/mips/include/asm/barrier.h     | 15 +++++++++++
 arch/powerpc/include/asm/barrier.h  | 21 +++++++++++++++-
 arch/s390/include/asm/barrier.h     | 15 +++++++++++
 arch/sparc/include/asm/barrier_64.h | 15 +++++++++++
 arch/x86/include/asm/barrier.h      | 43 ++++++++++++++++++++++++++++++-
 include/asm-generic/barrier.h       | 15 +++++++++++
 include/linux/compiler.h            |  9 +++++++
 11 files changed, 234 insertions(+), 2 deletions(-)

diff --git a/arch/arm/include/asm/barrier.h b/arch/arm/include/asm/barrier.h
index 60f15e274e6d..2f59f7443396 100644
--- a/arch/arm/include/asm/barrier.h
+++ b/arch/arm/include/asm/barrier.h
@@ -59,6 +59,21 @@
 #define smp_wmb()	dmb(ishst)
 #endif
 
+#define smp_store_release(p, v)						\
+do {									\
+	compiletime_assert_atomic_type(*p);				\
+	smp_mb();							\
+	ACCESS_ONCE(*p) = (v);						\
+} while (0)
+
+#define smp_load_acquire(p)						\
+({									\
+	typeof(*p) ___p1 = ACCESS_ONCE(*p);				\
+	compiletime_assert_atomic_type(*p);				\
+	smp_mb();							\
+	___p1;								\
+})
+
 #define read_barrier_depends()		do { } while(0)
 #define smp_read_barrier_depends()	do { } while(0)
 
diff --git a/arch/arm64/include/asm/barrier.h b/arch/arm64/include/asm/barrier.h
index d4a63338a53c..78e20ba8806b 100644
--- a/arch/arm64/include/asm/barrier.h
+++ b/arch/arm64/include/asm/barrier.h
@@ -35,10 +35,60 @@
 #define smp_mb()	barrier()
 #define smp_rmb()	barrier()
 #define smp_wmb()	barrier()
+
+#define smp_store_release(p, v)						\
+do {									\
+	compiletime_assert_atomic_type(*p);				\
+	smp_mb();							\
+	ACCESS_ONCE(*p) = (v);						\
+} while (0)
+
+#define smp_load_acquire(p)						\
+({									\
+	typeof(*p) ___p1 = ACCESS_ONCE(*p);				\
+	compiletime_assert_atomic_type(*p);				\
+	smp_mb();							\
+	___p1;								\
+})
+
 #else
+
 #define smp_mb()	asm volatile("dmb ish" : : : "memory")
 #define smp_rmb()	asm volatile("dmb ishld" : : : "memory")
 #define smp_wmb()	asm volatile("dmb ishst" : : : "memory")
+
+#define smp_store_release(p, v)						\
+do {									\
+	compiletime_assert_atomic_type(*p);				\
+	switch (sizeof(*p)) {						\
+	case 4:								\
+		asm volatile ("stlr %w1, %0"				\
+				: "=Q" (*p) : "r" (v) : "memory");	\
+		break;							\
+	case 8:								\
+		asm volatile ("stlr %1, %0"				\
+				: "=Q" (*p) : "r" (v) : "memory");	\
+		break;							\
+	}								\
+} while (0)
+
+#define smp_load_acquire(p)						\
+({									\
+	typeof(*p) ___p1;						\
+	compiletime_assert_atomic_type(*p);				\
+	switch (sizeof(*p)) {						\
+	case 4:								\
+		asm volatile ("ldar %w0, %1"				\
+			: "=r" (___p1) : "Q" (*p) : "memory");		\
+		break;							\
+	case 8:								\
+		asm volatile ("ldar %0, %1"				\
+			: "=r" (___p1) : "Q" (*p) : "memory");		\
+		break;							\
+	}								\
+	___p1;								\
+})
+
 #endif
 
 #define read_barrier_depends()		do { } while(0)
diff --git a/arch/ia64/include/asm/barrier.h b/arch/ia64/include/asm/barrier.h
index 60576e06b6fb..d0a69aa35e27 100644
--- a/arch/ia64/include/asm/barrier.h
+++ b/arch/ia64/include/asm/barrier.h
@@ -45,14 +45,37 @@
 # define smp_rmb()	rmb()
 # define smp_wmb()	wmb()
 # define smp_read_barrier_depends()	read_barrier_depends()
+
 #else
+
 # define smp_mb()	barrier()
 # define smp_rmb()	barrier()
 # define smp_wmb()	barrier()
 # define smp_read_barrier_depends()	do { } while(0)
+
 #endif
 
 /*
+ * IA64 GCC turns volatile stores into st.rel and volatile loads into ld.acq no
+ * need for asm trickery!
+ */
+
+#define smp_store_release(p, v)						\
+do {									\
+	compiletime_assert_atomic_type(*p);				\
+	barrier();							\
+	ACCESS_ONCE(*p) = (v);						\
+} while (0)
+
+#define smp_load_acquire(p)						\
+({									\
+	typeof(*p) ___p1 = ACCESS_ONCE(*p);				\
+	compiletime_assert_atomic_type(*p);				\
+	barrier();							\
+	___p1;								\
+})
+
+/*
  * XXX check on this ---I suspect what Linus really wants here is
  * acquire vs release semantics but we can't discuss this stuff with
  * Linus just yet.  Grrr...
diff --git a/arch/metag/include/asm/barrier.h b/arch/metag/include/asm/barrier.h
index e355a4c10968..2d6f0de77325 100644
--- a/arch/metag/include/asm/barrier.h
+++ b/arch/metag/include/asm/barrier.h
@@ -85,4 +85,19 @@ static inline void fence(void)
 #define smp_read_barrier_depends()     do { } while (0)
 #define set_mb(var, value) do { var = value; smp_mb(); } while (0)
 
+#define smp_store_release(p, v)						\
+do {									\
+	compiletime_assert_atomic_type(*p);				\
+	smp_mb();							\
+	ACCESS_ONCE(*p) = (v);						\
+} while (0)
+
+#define smp_load_acquire(p)						\
+({									\
+	typeof(*p) ___p1 = ACCESS_ONCE(*p);				\
+	compiletime_assert_atomic_type(*p);				\
+	smp_mb();							\
+	___p1;								\
+})
+
 #endif /* _ASM_METAG_BARRIER_H */
diff --git a/arch/mips/include/asm/barrier.h b/arch/mips/include/asm/barrier.h
index 314ab5532019..52c5b61d7aba 100644
--- a/arch/mips/include/asm/barrier.h
+++ b/arch/mips/include/asm/barrier.h
@@ -180,4 +180,19 @@
 #define nudge_writes() mb()
 #endif
 
+#define smp_store_release(p, v)						\
+do {									\
+	compiletime_assert_atomic_type(*p);				\
+	smp_mb();							\
+	ACCESS_ONCE(*p) = (v);						\
+} while (0)
+
+#define smp_load_acquire(p)						\
+({									\
+	typeof(*p) ___p1 = ACCESS_ONCE(*p);				\
+	compiletime_assert_atomic_type(*p);				\
+	smp_mb();							\
+	___p1;								\
+})
+
 #endif /* __ASM_BARRIER_H */
diff --git a/arch/powerpc/include/asm/barrier.h b/arch/powerpc/include/asm/barrier.h
index ae782254e731..f89da808ce31 100644
--- a/arch/powerpc/include/asm/barrier.h
+++ b/arch/powerpc/include/asm/barrier.h
@@ -45,11 +45,15 @@
 #    define SMPWMB      eieio
 #endif
 
+#define __lwsync()	__asm__ __volatile__ (stringify_in_c(LWSYNC) : : :"memory")
+
 #define smp_mb()	mb()
-#define smp_rmb()	__asm__ __volatile__ (stringify_in_c(LWSYNC) : : :"memory")
+#define smp_rmb()	__lwsync()
 #define smp_wmb()	__asm__ __volatile__ (stringify_in_c(SMPWMB) : : :"memory")
 #define smp_read_barrier_depends()	read_barrier_depends()
 #else
+#define __lwsync()	barrier()
+
 #define smp_mb()	barrier()
 #define smp_rmb()	barrier()
 #define smp_wmb()	barrier()
@@ -65,4 +69,19 @@
 #define data_barrier(x)	\
 	asm volatile("twi 0,%0,0; isync" : : "r" (x) : "memory");
 
+#define smp_store_release(p, v)						\
+do {									\
+	compiletime_assert_atomic_type(*p);				\
+	__lwsync();							\
+	ACCESS_ONCE(*p) = (v);						\
+} while (0)
+
+#define smp_load_acquire(p)						\
+({									\
+	typeof(*p) ___p1 = ACCESS_ONCE(*p);				\
+	compiletime_assert_atomic_type(*p);				\
+	__lwsync();							\
+	___p1;								\
+})
+
 #endif /* _ASM_POWERPC_BARRIER_H */
diff --git a/arch/s390/include/asm/barrier.h b/arch/s390/include/asm/barrier.h
index 16760eeb79b0..578680f6207a 100644
--- a/arch/s390/include/asm/barrier.h
+++ b/arch/s390/include/asm/barrier.h
@@ -32,4 +32,19 @@
 
 #define set_mb(var, value)		do { var = value; mb(); } while (0)
 
+#define smp_store_release(p, v)						\
+do {									\
+	compiletime_assert_atomic_type(*p);				\
+	barrier();							\
+	ACCESS_ONCE(*p) = (v);						\
+} while (0)
+
+#define smp_load_acquire(p)						\
+({									\
+	typeof(*p) ___p1 = ACCESS_ONCE(*p);				\
+	compiletime_assert_atomic_type(*p);				\
+	barrier();							\
+	___p1;								\
+})
+
 #endif /* __ASM_BARRIER_H */
diff --git a/arch/sparc/include/asm/barrier_64.h b/arch/sparc/include/asm/barrier_64.h
index 95d45986f908..b5aad964558e 100644
--- a/arch/sparc/include/asm/barrier_64.h
+++ b/arch/sparc/include/asm/barrier_64.h
@@ -53,4 +53,19 @@ do {	__asm__ __volatile__("ba,pt	%%xcc, 1f\n\t" \
 
 #define smp_read_barrier_depends()	do { } while(0)
 
+#define smp_store_release(p, v)						\
+do {									\
+	compiletime_assert_atomic_type(*p);				\
+	barrier();							\
+	ACCESS_ONCE(*p) = (v);						\
+} while (0)
+
+#define smp_load_acquire(p)						\
+({									\
+	typeof(*p) ___p1 = ACCESS_ONCE(*p);				\
+	compiletime_assert_atomic_type(*p);				\
+	barrier();							\
+	___p1;								\
+})
+
 #endif /* !(__SPARC64_BARRIER_H) */
diff --git a/arch/x86/include/asm/barrier.h b/arch/x86/include/asm/barrier.h
index c6cd358a1eec..04a48903b2eb 100644
--- a/arch/x86/include/asm/barrier.h
+++ b/arch/x86/include/asm/barrier.h
@@ -92,12 +92,53 @@
 #endif
 #define smp_read_barrier_depends()	read_barrier_depends()
 #define set_mb(var, value) do { (void)xchg(&var, value); } while (0)
-#else
+#else /* !SMP */
 #define smp_mb()	barrier()
 #define smp_rmb()	barrier()
 #define smp_wmb()	barrier()
 #define smp_read_barrier_depends()	do { } while (0)
 #define set_mb(var, value) do { var = value; barrier(); } while (0)
+#endif /* SMP */
+
+#if defined(CONFIG_X86_OOSTORE) || defined(CONFIG_X86_PPRO_FENCE)
+
+/*
+ * For either of these options x86 doesn't have a strong TSO memory
+ * model and we should fall back to full barriers.
+ */
+
+#define smp_store_release(p, v)						\
+do {									\
+	compiletime_assert_atomic_type(*p);				\
+	smp_mb();							\
+	ACCESS_ONCE(*p) = (v);						\
+} while (0)
+
+#define smp_load_acquire(p)						\
+({									\
+	typeof(*p) ___p1 = ACCESS_ONCE(*p);				\
+	compiletime_assert_atomic_type(*p);				\
+	smp_mb();							\
+	___p1;								\
+})
+
+#else /* regular x86 TSO memory ordering */
+
+#define smp_store_release(p, v)						\
+do {									\
+	compiletime_assert_atomic_type(*p);				\
+	barrier();							\
+	ACCESS_ONCE(*p) = (v);						\
+} while (0)
+
+#define smp_load_acquire(p)						\
+({									\
+	typeof(*p) ___p1 = ACCESS_ONCE(*p);				\
+	compiletime_assert_atomic_type(*p);				\
+	barrier();							\
+	___p1;								\
+})
+
 #endif
 
 /*
diff --git a/include/asm-generic/barrier.h b/include/asm-generic/barrier.h
index 639d7a4d033b..01613b382b0e 100644
--- a/include/asm-generic/barrier.h
+++ b/include/asm-generic/barrier.h
@@ -46,5 +46,20 @@
 #define read_barrier_depends()		do {} while (0)
 #define smp_read_barrier_depends()	do {} while (0)
 
+#define smp_store_release(p, v)						\
+do {									\
+	compiletime_assert_atomic_type(*p);				\
+	smp_mb();							\
+	ACCESS_ONCE(*p) = (v);						\
+} while (0)
+
+#define smp_load_acquire(p)						\
+({									\
+	typeof(*p) ___p1 = ACCESS_ONCE(*p);				\
+	compiletime_assert_atomic_type(*p);				\
+	smp_mb();							\
+	___p1;								\
+})
+
 #endif /* !__ASSEMBLY__ */
 #endif /* __ASM_GENERIC_BARRIER_H */
diff --git a/include/linux/compiler.h b/include/linux/compiler.h
index a2329c5e6206..2472740d7ab2 100644
--- a/include/linux/compiler.h
+++ b/include/linux/compiler.h
@@ -302,6 +302,11 @@ void ftrace_likely_update(struct ftrace_branch_data *f, int val, int expect);
 # define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b))
 #endif
 
+/* Is this type a native word size -- useful for atomic operations */
+#ifndef __native_word
+# define __native_word(t) (sizeof(t) == sizeof(int) || sizeof(t) == sizeof(long))
+#endif
+
 /* Compile time object size, -1 for unknown */
 #ifndef __compiletime_object_size
 # define __compiletime_object_size(obj) -1
@@ -341,6 +346,10 @@ void ftrace_likely_update(struct ftrace_branch_data *f, int val, int expect);
 #define compiletime_assert(condition, msg) \
 	_compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
 
+#define compiletime_assert_atomic_type(t)				\
+	compiletime_assert(__native_word(t),				\
+		"Need native word sized stores/loads for atomicity.")
+
 /*
  * Prevent the compiler from merging or refetching accesses.  The compiler
  * is also forbidden from reordering successive instances of ACCESS_ONCE(),
-- 
2.5.0

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[PATCH 3.12 01/82] efi: fix 32bit kernel boot failed problem using efi Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:10 +0200
  [PATCH 3.12 67/82] signalfd: fix information leak in signalfd_copyinfo Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:20 +0200
  [PATCH 3.12 54/82] ipc: modify message queue accounting to not take kernel data structures into account Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:20 +0200
  [PATCH 3.12 75/82] mm/hwpoison: fix page refcount of unknown non LRU page Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:20 +0200
  [PATCH 3.12 64/82] x86/ldt: Correct LDT access in single stepping logic Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:20 +0200
  [PATCH 3.12 44/82] ipmi: fix timeout calculation when bmc is disconnected Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:20 +0200
  [PATCH 3.12 07/82] ARC: make sure instruction_pointer() returns unsigned value Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:20 +0200
  [PATCH 3.12 59/82] x86/nmi/64: Switch stacks on userspace NMI entry Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:20 +0200
  [PATCH 3.12 62/82] rcu: Move lockless_dereference() out of rcupdate.h Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:20 +0200
  [PATCH 3.12 55/82] ocfs2: fix BUG in ocfs2_downconvert_thread_do_work() Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:20 +0200
  [PATCH 3.12 60/82] arch: Introduce smp_load_acquire(), smp_store_release() Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:20 +0200
  [PATCH 3.12 57/82] x86/nmi: Enable nested do_nmi() handling for 64-bit kernels Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:20 +0200
  [PATCH 3.12 71/82] md/bitmap: return an error when bitmap superblock is corrupt. Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:20 +0200
  [PATCH 3.12 76/82] xen-blkfront: don't add indirect pages to list when !feature_persistent Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:20 +0200
  [PATCH 3.12 45/82] sparc64: Fix userspace FPU register corruptions. Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:20 +0200
  [PATCH 3.12 74/82] ipc,sem: fix use after free on IPC_RMID after a task using same semaphore set exits Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:20 +0200
  [PATCH 3.12 05/82] freeing unlinked file indefinitely delayed Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:20 +0200
  [PATCH 3.12 66/82] x86/ldt: Further fix FPU emulation Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:20 +0200
  [PATCH 3.12 69/82] signal: fix information leak in copy_siginfo_from_user32 Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:20 +0200
  [PATCH 3.12 80/82] EDAC, ppc4xx: Access mci->csrows array elements properly Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:20 +0200
  [PATCH 3.12 56/82] md/raid1: extend spinlock to protect raid1_end_read_request against inconsistencies Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:20 +0200
  [PATCH 3.12 77/82] perf: Fix fasync handling on inherited events Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:20 +0200
  [PATCH 3.12 63/82] x86/ldt: Make modify_ldt synchronous Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:20 +0200
  [PATCH 3.12 82/82] rbd: fix copyup completion race Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:20 +0200
  [PATCH 3.12 78/82] dm thin metadata: delete btrees when releasing metadata snapshot Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:20 +0200
  [PATCH 3.12 73/82] ipc/sem.c: update/correct memory barriers Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:20 +0200
  [PATCH 3.12 65/82] x86/ldt: Correct FPU emulation access to LDT Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:20 +0200
  [PATCH 3.12 68/82] signal: fix information leak in copy_siginfo_to_user Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:20 +0200
  [PATCH 3.12 81/82] drm/radeon: add new OLAND pci id Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:20 +0200
  [PATCH 3.12 58/82] x86/nmi/64: Remove asm code that saves CR2 Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:20 +0200
  [PATCH 3.12 79/82] localmodconfig: Use Kbuild files too Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:20 +0200
  [PATCH 3.12 61/82] rcu: Provide counterpart to rcu_dereference() for non-RCU situations Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:20 +0200
  [PATCH 3.12 72/82] mm, vmscan: Do not wait for page writeback for GFP_NOFS allocations Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:20 +0200
  [PATCH 3.12 46/82] md: use kzalloc() when bitmap is disabled Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:20 +0200
  [PATCH 3.12 70/82] path_openat(): fix double fput() Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:20 +0200
  [PATCH 3.12 39/82] ipr: Fix invalid array indexing for HRRQ Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:30 +0200
  [PATCH 3.12 38/82] ipr: Fix incorrect trace indexing Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:30 +0200
  [PATCH 3.12 51/82] ARM: OMAP2+: hwmod: Fix _wait_target_ready() for hwmods without sysc Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:30 +0200
  [PATCH 3.12 32/82] ARM: realview: fix sparsemem build Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:30 +0200
  [PATCH 3.12 31/82] hwrng: via-rng - Mark device ID table as __maybe_unused Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:30 +0200
  [PATCH 3.12 10/82] ALSA: usb-audio: add dB range mapping for some devices Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:30 +0200
  [PATCH 3.12 33/82] MIPS: Fix sched_getaffinity with MT FPAFF enabled Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:30 +0200
  [PATCH 3.12 43/82] ima: extend "mask" policy matching support Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:30 +0200
  [PATCH 3.12 41/82] USB: sierra: add 1199:68AB device ID Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:30 +0200
  [PATCH 3.12 30/82] 3w-xxxx: fix mis-aligned struct accesses Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:30 +0200
  [PATCH 3.12 40/82] xhci: fix off by one error in TRB DMA address boundary check Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:30 +0200
  [PATCH 3.12 53/82] ALSA: hda - fix cs4210_spdif_automute() Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:30 +0200
  [PATCH 3.12 08/82] genirq: Prevent resend to interrupts marked IRQ_NESTED_THREAD Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:30 +0200
  [PATCH 3.12 52/82] iscsi-target: Fix iscsit_start_kthreads failure OOPs Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:30 +0200
  [PATCH 3.12 27/82] vhost: actually track log eventfd file Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:30 +0200
  [PATCH 3.12 35/82] fsnotify: fix oops in fsnotify_clear_marks_by_group_flags() Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:30 +0200
  [PATCH 3.12 37/82] ipr: Fix locking for unit attention handling Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:30 +0200
  [PATCH 3.12 36/82] drm/radeon/combios: add some validation of lvds values Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:30 +0200
  [PATCH 3.12 47/82] ASoC: pcm1681: Fix setting de-emphasis sampling rate selection Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:30 +0200
  [PATCH 3.12 50/82] crypto: ixp4xx - Remove bogus BUG_ON on scattered dst buffer Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:30 +0200
  [PATCH 3.12 29/82] iscsi-target: Fix iser explicit logout TX kthread leak Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:30 +0200
  [PATCH 3.12 48/82] x86/xen: Probe target addresses in set_aliased_prot() before the hypercall Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:30 +0200
  [PATCH 3.12 49/82] xen/gntdevt: Fix race condition in gntdev_release() Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:30 +0200
    Re: [PATCH 3.12 49/82] xen/gntdevt: Fix race condition in  gntdev_release() Luis Henriques <luis.henriques@canonical.com> - 2015-08-25 13:40 +0200
      Re: [PATCH 3.12 49/82] xen/gntdevt: Fix race condition in  gntdev_release() Marek Marczykowski-Górecki   <marmarek@invisiblethingslab.com> - 2015-08-25 14:00 +0200
        Re: [PATCH 3.12 49/82] xen/gntdevt: Fix race condition in  gntdev_release() Jiri Slaby <jslaby@suse.cz> - 2015-08-25 15:20 +0200
          Re: [PATCH 3.12 49/82] xen/gntdevt: Fix race condition in  gntdev_release() Marek Marczykowski-Górecki   <marmarek@invisiblethingslab.com> - 2015-08-25 16:10 +0200
            Re: [PATCH 3.12 49/82] xen/gntdevt: Fix race condition in  gntdev_release() Jiri Slaby <jslaby@suse.cz> - 2015-08-27 10:10 +0200
  [PATCH 3.12 42/82] ima: add support for new "euid" policy condition Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:30 +0200
  [PATCH 3.12 34/82] MIPS: Make set_pte() SMP safe. Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:30 +0200
  [PATCH 3.12 02/82] futex: Fix a race condition between REQUEUE_PI and task death Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:40 +0200
  [PATCH 3.12 28/82] iscsi-target: Fix use-after-free during TPG session shutdown Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:40 +0200
  [PATCH 3.12 09/82] ALSA: usb-audio: Add MIDI support for Steinberg MI2/MI4 Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:40 +0200
  [PATCH 3.12 15/82] mmc: sdhci-pxav3: fix platform_data is not initialized Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:40 +0200
  [PATCH 3.12 19/82] blkcg: fix gendisk reference leak in blkg_conf_prep() Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:40 +0200
  [PATCH 3.12 26/82] rds: rds_ib_device.refcount overflow Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:40 +0200
  [PATCH 3.12 23/82] xhci: report U3 when link is in resume state Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:40 +0200
  [PATCH 3.12 03/82] HID: usbhid: add Chicony/Pixart usb optical mouse that needs QUIRK_ALWAYS_POLL Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:40 +0200
  [PATCH 3.12 18/82] Input: usbtouchscreen - avoid unresponsive TSC-30 touch screen Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:40 +0200
  [PATCH 3.12 25/82] xhci: do not report PLC when link is in internal resume state Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:40 +0200
  [PATCH 3.12 22/82] xhci: Calculate old endpoints correctly on device reset Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:40 +0200
  [PATCH 3.12 24/82] xhci: prevent bus_suspend if SS port resuming in phase 1 Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:40 +0200
  [PATCH 3.12 06/82] s390/sclp: clear upper register halves in _sclp_print_early Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:40 +0200
  [PATCH 3.12 17/82] tile: use free_bootmem_late() for initrd Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:40 +0200
  [PATCH 3.12 04/82] mm: avoid setting up anonymous pages into file mapping Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:40 +0200
  [PATCH 3.12 16/82] md/raid1: fix test for 'was read error from last working device'. Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:40 +0200
  [PATCH 3.12 20/82] ata: pmp: add quirk for Marvell 4140 SATA PMP Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:40 +0200
  [PATCH 3.12 11/82] ALSA: hda - Fix MacBook Pro 5,2 quirk Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:40 +0200
  [PATCH 3.12 13/82] mac80211: clear subdir_stations when removing debugfs Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:40 +0200
  [PATCH 3.12 21/82] usb-storage: ignore ZTE MF 823 card reader in mode 0x1225 Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:40 +0200
  [PATCH 3.12 14/82] mmc: sdhci-esdhc: Make 8BIT bus work Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:40 +0200
  [PATCH 3.12 12/82] st: null pointer dereference panic caused by use after kref_put by st_open Jiri Slaby <jslaby@suse.cz> - 2015-08-24 11:40 +0200

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