Merge branch 'x86/urgent' into x86/apic

Bring in the upstream modifications so we can fixup the silent merge
conflict which is introduced by this merge.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

7 files changed, 14 insertions, 35 deletions

diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index cd8778103165..af12c2db9bb8 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -1,6 +1,5 @@
 config PARISC
         def_bool y
-        select ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS
         select ARCH_MIGHT_HAVE_PC_PARPORT
         select HAVE_IDE
         select HAVE_OPROFILE
diff --git a/arch/parisc/configs/c8000_defconfig b/arch/parisc/configs/c8000_defconfig
index 1a8f6f95689e..f6a4c016304b 100644
--- a/arch/parisc/configs/c8000_defconfig
+++ b/arch/parisc/configs/c8000_defconfig
@@ -245,7 +245,6 @@ CONFIG_DEBUG_RT_MUTEXES=y
 CONFIG_PROVE_RCU_DELAY=y
 CONFIG_DEBUG_BLOCK_EXT_DEVT=y
 CONFIG_LATENCYTOP=y
-CONFIG_DEBUG_STRICT_USER_COPY_CHECKS=y
 CONFIG_KEYS=y
 # CONFIG_CRYPTO_HW is not set
 CONFIG_FONTS=y
diff --git a/arch/parisc/configs/generic-64bit_defconfig b/arch/parisc/configs/generic-64bit_defconfig
index 7e0792658952..c564e6e1fa23 100644
--- a/arch/parisc/configs/generic-64bit_defconfig
+++ b/arch/parisc/configs/generic-64bit_defconfig
@@ -291,7 +291,6 @@ CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC=y
 CONFIG_BOOTPARAM_HUNG_TASK_PANIC=y
 # CONFIG_SCHED_DEBUG is not set
 CONFIG_TIMER_STATS=y
-CONFIG_DEBUG_STRICT_USER_COPY_CHECKS=y
 CONFIG_CRYPTO_MANAGER=y
 CONFIG_CRYPTO_ECB=m
 CONFIG_CRYPTO_PCBC=m
diff --git a/arch/parisc/include/asm/uaccess.h b/arch/parisc/include/asm/uaccess.h
index 0f59fd9ca205..e9150487e20d 100644
--- a/arch/parisc/include/asm/uaccess.h
+++ b/arch/parisc/include/asm/uaccess.h
@@ -208,13 +208,13 @@ unsigned long copy_in_user(void __user *dst, const void __user *src, unsigned lo
 #define __copy_to_user_inatomic __copy_to_user
 #define __copy_from_user_inatomic __copy_from_user
 
-extern void copy_from_user_overflow(void)
-#ifdef CONFIG_DEBUG_STRICT_USER_COPY_CHECKS
-        __compiletime_error("copy_from_user() buffer size is not provably correct")
-#else
-        __compiletime_warning("copy_from_user() buffer size is not provably correct")
-#endif
-;
+extern void __compiletime_error("usercopy buffer size is too small")
+__bad_copy_user(void);
+
+static inline void copy_user_overflow(int size, unsigned long count)
+{
+        WARN(1, "Buffer overflow detected (%d < %lu)!\n", size, count);
+}
 
 static inline unsigned long __must_check copy_from_user(void *to,
                                           const void __user *from,
@@ -223,10 +223,12 @@ static inline unsigned long __must_check copy_from_user(void *to,
         int sz = __compiletime_object_size(to);
         int ret = -EFAULT;
 
-        if (likely(sz == -1 || !__builtin_constant_p(n) || sz >= n))
+        if (likely(sz == -1 || sz >= n))
                 ret = __copy_from_user(to, from, n);
-        else
-                copy_from_user_overflow();
+        else if (!__builtin_constant_p(n))
+                copy_user_overflow(sz, n);
+        else
+                __bad_copy_user();
 
         return ret;
 }
diff --git a/arch/parisc/include/uapi/asm/errno.h b/arch/parisc/include/uapi/asm/errno.h
index c0ae62520d15..274d5bc6ecce 100644
--- a/arch/parisc/include/uapi/asm/errno.h
+++ b/arch/parisc/include/uapi/asm/errno.h
@@ -97,10 +97,10 @@
 #define ENOTCONN        235     /* Transport endpoint is not connected */
 #define ESHUTDOWN       236     /* Cannot send after transport endpoint shutdown */
 #define ETOOMANYREFS    237     /* Too many references: cannot splice */
-#define EREFUSED        ECONNREFUSED    /* for HP's NFS apparently */
 #define ETIMEDOUT       238     /* Connection timed out */
 #define ECONNREFUSED    239     /* Connection refused */
-#define EREMOTERELEASE  240     /* Remote peer released connection */
+#define EREFUSED        ECONNREFUSED    /* for HP's NFS apparently */
+#define EREMOTERELEASE  240     /* Remote peer released connection */
 #define EHOSTDOWN       241     /* Host is down */
 #define EHOSTUNREACH    242     /* No route to host */
 
diff --git a/arch/parisc/kernel/processor.c b/arch/parisc/kernel/processor.c
index 5adc339eb7c8..0c2a94a0f751 100644
--- a/arch/parisc/kernel/processor.c
+++ b/arch/parisc/kernel/processor.c
@@ -51,8 +51,6 @@ EXPORT_SYMBOL(_parisc_requires_coherency);
 
 DEFINE_PER_CPU(struct cpuinfo_parisc, cpu_data);
 
-extern int update_cr16_clocksource(void);       /* from time.c */
-
 /*
 **      PARISC CPU driver - claim "device" and initialize CPU data structures.
 **
@@ -228,12 +226,6 @@ static int processor_probe(struct parisc_device *dev)
         }
 #endif
 
-        /* If we've registered more than one cpu,
-         * we'll use the jiffies clocksource since cr16
-         * is not synchronized between CPUs.
-         */
-        update_cr16_clocksource();
-
         return 0;
 }
 
diff --git a/arch/parisc/kernel/time.c b/arch/parisc/kernel/time.c
index 505cf1ac5af2..4b0b963d52a7 100644
--- a/arch/parisc/kernel/time.c
+++ b/arch/parisc/kernel/time.c
@@ -221,18 +221,6 @@ static struct clocksource clocksource_cr16 = {
         .flags                  = CLOCK_SOURCE_IS_CONTINUOUS,
 };
 
-int update_cr16_clocksource(void)
-{
-        /* since the cr16 cycle counters are not synchronized across CPUs,
-           we'll check if we should switch to a safe clocksource: */
-        if (clocksource_cr16.rating != 0 && num_online_cpus() > 1) {
-                clocksource_change_rating(&clocksource_cr16, 0);
-                return 1;
-        }
-
-        return 0;
-}
-
 void __init start_cpu_itimer(void)
 {
         unsigned int cpu = smp_processor_id();