Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM fixes from Russell King:
"A random collection of various fixes, mainly from Arnd and a few other
people. Not thing really stands out here."
* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
ARM: drop experimental status for hotplug and Thumb2
ARM: 7560/1: SMP_TWD: use DIV_ROUND_CLOSEST() for periodic mode
ARM: 7559/1: smp: switch away from the idmap before updating init_mm.mm_count
ARM: 7556/1: perf: fix updated event period in response to PERF_EVENT_IOC_PERIOD
ARM: 7555/1: kexec: fix segment memory addresses check
ARM: warnings in arch/arm/include/asm/uaccess.h
ARM: binfmt_flat: unused variable 'persistent'
ARM: be really quiet when building with 'make -s'
ARM: pass -marm to gcc by default for both C and assembler
ARM: Xen: fix initial build problems
ARM: export default read_current_timer
ARM: Fix another build warning in arch/arm/mm/alignment.c
ARM: export set_irq_flags
ARM: kprobes: make more tests conditional
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 73067ef..ade7e92 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1603,8 +1603,8 @@
default "4"
config HOTPLUG_CPU
- bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
- depends on SMP && HOTPLUG && EXPERIMENTAL
+ bool "Support for hot-pluggable CPUs"
+ depends on SMP && HOTPLUG
help
Say Y here to experiment with turning CPUs off and on. CPUs
can be controlled through /sys/devices/system/cpu.
@@ -1645,8 +1645,8 @@
default 100
config THUMB2_KERNEL
- bool "Compile the kernel in Thumb-2 mode (EXPERIMENTAL)"
- depends on CPU_V7 && !CPU_V6 && !CPU_V6K && EXPERIMENTAL
+ bool "Compile the kernel in Thumb-2 mode"
+ depends on CPU_V7 && !CPU_V6 && !CPU_V6K
select AEABI
select ARM_ASM_UNIFIED
select ARM_UNWIND
@@ -1850,6 +1850,7 @@
config XEN
bool "Xen guest support on ARM (EXPERIMENTAL)"
depends on EXPERIMENTAL && ARM && OF
+ depends on CPU_V7 && !CPU_V6
help
Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index f023e3a..5f914fc 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -21,8 +21,6 @@
OBJCOPYFLAGS :=-O binary -R .comment -S
GZFLAGS :=-9
#KBUILD_CFLAGS +=-pipe
-# Explicitly specifiy 32-bit ARM ISA since toolchain default can be -mthumb:
-KBUILD_CFLAGS +=$(call cc-option,-marm,)
# Never generate .eh_frame
KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm)
@@ -105,17 +103,20 @@
ifeq ($(CONFIG_THUMB2_KERNEL),y)
AFLAGS_AUTOIT :=$(call as-option,-Wa$(comma)-mimplicit-it=always,-Wa$(comma)-mauto-it)
AFLAGS_NOWARN :=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W)
-CFLAGS_THUMB2 :=-mthumb $(AFLAGS_AUTOIT) $(AFLAGS_NOWARN)
-AFLAGS_THUMB2 :=$(CFLAGS_THUMB2) -Wa$(comma)-mthumb
+CFLAGS_ISA :=-mthumb $(AFLAGS_AUTOIT) $(AFLAGS_NOWARN)
+AFLAGS_ISA :=$(CFLAGS_ISA) -Wa$(comma)-mthumb
# Work around buggy relocation from gas if requested:
ifeq ($(CONFIG_THUMB2_AVOID_R_ARM_THM_JUMP11),y)
CFLAGS_MODULE +=-fno-optimize-sibling-calls
endif
+else
+CFLAGS_ISA :=$(call cc-option,-marm,)
+AFLAGS_ISA :=$(CFLAGS_ISA)
endif
# Need -Uarm for gcc < 3.x
-KBUILD_CFLAGS +=$(CFLAGS_ABI) $(CFLAGS_THUMB2) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm
-KBUILD_AFLAGS +=$(CFLAGS_ABI) $(AFLAGS_THUMB2) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float
+KBUILD_CFLAGS +=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm
+KBUILD_AFLAGS +=$(CFLAGS_ABI) $(AFLAGS_ISA) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float
CHECKFLAGS += -D__arm__
diff --git a/arch/arm/boot/Makefile b/arch/arm/boot/Makefile
index 3fdab01..f2aa09e 100644
--- a/arch/arm/boot/Makefile
+++ b/arch/arm/boot/Makefile
@@ -33,7 +33,7 @@
$(obj)/xipImage: vmlinux FORCE
$(call if_changed,objcopy)
- @echo ' Kernel: $@ is ready (physical address: $(CONFIG_XIP_PHYS_ADDR))'
+ $(kecho) ' Kernel: $@ is ready (physical address: $(CONFIG_XIP_PHYS_ADDR))'
$(obj)/Image $(obj)/zImage: FORCE
@echo 'Kernel configured for XIP (CONFIG_XIP_KERNEL=y)'
@@ -48,14 +48,14 @@
$(obj)/Image: vmlinux FORCE
$(call if_changed,objcopy)
- @echo ' Kernel: $@ is ready'
+ $(kecho) ' Kernel: $@ is ready'
$(obj)/compressed/vmlinux: $(obj)/Image FORCE
$(Q)$(MAKE) $(build)=$(obj)/compressed $@
$(obj)/zImage: $(obj)/compressed/vmlinux FORCE
$(call if_changed,objcopy)
- @echo ' Kernel: $@ is ready'
+ $(kecho) ' Kernel: $@ is ready'
endif
@@ -90,7 +90,7 @@
$(obj)/uImage: $(obj)/zImage FORCE
@$(check_for_multiple_loadaddr)
$(call if_changed,uimage)
- @echo ' Image $@ is ready'
+ $(kecho) ' Image $@ is ready'
$(obj)/bootp/bootp: $(obj)/zImage initrd FORCE
$(Q)$(MAKE) $(build)=$(obj)/bootp $@
@@ -98,7 +98,7 @@
$(obj)/bootpImage: $(obj)/bootp/bootp FORCE
$(call if_changed,objcopy)
- @echo ' Kernel: $@ is ready'
+ $(kecho) ' Kernel: $@ is ready'
PHONY += initrd FORCE
initrd:
diff --git a/arch/arm/include/asm/flat.h b/arch/arm/include/asm/flat.h
index 59426a4..e847d23 100644
--- a/arch/arm/include/asm/flat.h
+++ b/arch/arm/include/asm/flat.h
@@ -8,7 +8,7 @@
#define flat_argvp_envp_on_stack() 1
#define flat_old_ram_flag(flags) (flags)
#define flat_reloc_valid(reloc, size) ((reloc) <= (size))
-#define flat_get_addr_from_rp(rp, relval, flags, persistent) get_unaligned(rp)
+#define flat_get_addr_from_rp(rp, relval, flags, persistent) ((void)persistent,get_unaligned(rp))
#define flat_put_addr_at_rp(rp, val, relval) put_unaligned(val,rp)
#define flat_get_relocate_addr(rel) (rel)
#define flat_set_persistent(relval, p) 0
diff --git a/arch/arm/include/asm/uaccess.h b/arch/arm/include/asm/uaccess.h
index 77bd79f..7e1f760 100644
--- a/arch/arm/include/asm/uaccess.h
+++ b/arch/arm/include/asm/uaccess.h
@@ -200,8 +200,8 @@
#define USER_DS KERNEL_DS
#define segment_eq(a,b) (1)
-#define __addr_ok(addr) (1)
-#define __range_ok(addr,size) (0)
+#define __addr_ok(addr) ((void)(addr),1)
+#define __range_ok(addr,size) ((void)(addr),0)
#define get_fs() (KERNEL_DS)
static inline void set_fs(mm_segment_t fs)
diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c
index 16cedb4..8961650 100644
--- a/arch/arm/kernel/irq.c
+++ b/arch/arm/kernel/irq.c
@@ -34,6 +34,7 @@
#include <linux/list.h>
#include <linux/kallsyms.h>
#include <linux/proc_fs.h>
+#include <linux/export.h>
#include <asm/exception.h>
#include <asm/mach/arch.h>
@@ -109,6 +110,7 @@
/* Order is clear bits in "clr" then set bits in "set" */
irq_modify_status(irq, clr, set & ~clr);
}
+EXPORT_SYMBOL_GPL(set_irq_flags);
void __init init_IRQ(void)
{
diff --git a/arch/arm/kernel/kprobes-test-arm.c b/arch/arm/kernel/kprobes-test-arm.c
index 38c1a3b..8393129 100644
--- a/arch/arm/kernel/kprobes-test-arm.c
+++ b/arch/arm/kernel/kprobes-test-arm.c
@@ -366,7 +366,9 @@
TEST_UNSUPPORTED(".word 0xe04f0392 @ umaal r0, pc, r2, r3")
TEST_UNSUPPORTED(".word 0xe0500090 @ undef")
TEST_UNSUPPORTED(".word 0xe05fff9f @ undef")
+#endif
+#if __LINUX_ARM_ARCH__ >= 7
TEST_RRR( "mls r0, r",1, VAL1,", r",2, VAL2,", r",3, VAL3,"")
TEST_RRR( "mlshi r7, r",8, VAL3,", r",9, VAL1,", r",10, VAL2,"")
TEST_RR( "mls lr, r",1, VAL2,", r",2, VAL3,", r13")
@@ -456,6 +458,8 @@
TEST_UNSUPPORTED(".word 0xe1700090") /* Unallocated space */
#if __LINUX_ARM_ARCH__ >= 6
TEST_UNSUPPORTED("ldrex r2, [sp]")
+#endif
+#if (__LINUX_ARM_ARCH__ >= 7) || defined(CONFIG_CPU_32v6K)
TEST_UNSUPPORTED("strexd r0, r2, r3, [sp]")
TEST_UNSUPPORTED("ldrexd r2, r3, [sp]")
TEST_UNSUPPORTED("strexb r0, r2, [sp]")
diff --git a/arch/arm/kernel/machine_kexec.c b/arch/arm/kernel/machine_kexec.c
index e29c333..8ef8c93 100644
--- a/arch/arm/kernel/machine_kexec.c
+++ b/arch/arm/kernel/machine_kexec.c
@@ -45,10 +45,9 @@
for (i = 0; i < image->nr_segments; i++) {
current_segment = &image->segment[i];
- err = memblock_is_region_memory(current_segment->mem,
- current_segment->memsz);
- if (err)
- return - EINVAL;
+ if (!memblock_is_region_memory(current_segment->mem,
+ current_segment->memsz))
+ return -EINVAL;
err = get_user(header, (__be32*)current_segment->buf);
if (err)
diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c
index 93971b1..53c0304 100644
--- a/arch/arm/kernel/perf_event.c
+++ b/arch/arm/kernel/perf_event.c
@@ -96,6 +96,10 @@
s64 period = hwc->sample_period;
int ret = 0;
+ /* The period may have been changed by PERF_EVENT_IOC_PERIOD */
+ if (unlikely(period != hwc->last_period))
+ left = period - (hwc->last_period - left);
+
if (unlikely(left <= -period)) {
left = period;
local64_set(&hwc->period_left, left);
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 8e20754d..fbc8b26 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -294,18 +294,24 @@
asmlinkage void __cpuinit secondary_start_kernel(void)
{
struct mm_struct *mm = &init_mm;
- unsigned int cpu = smp_processor_id();
+ unsigned int cpu;
+
+ /*
+ * The identity mapping is uncached (strongly ordered), so
+ * switch away from it before attempting any exclusive accesses.
+ */
+ cpu_switch_mm(mm->pgd, mm);
+ enter_lazy_tlb(mm, current);
+ local_flush_tlb_all();
/*
* All kernel threads share the same mm context; grab a
* reference and switch to it.
*/
+ cpu = smp_processor_id();
atomic_inc(&mm->mm_count);
current->active_mm = mm;
cpumask_set_cpu(cpu, mm_cpumask(mm));
- cpu_switch_mm(mm->pgd, mm);
- enter_lazy_tlb(mm, current);
- local_flush_tlb_all();
printk("CPU%u: Booted secondary processor\n", cpu);
diff --git a/arch/arm/kernel/smp_twd.c b/arch/arm/kernel/smp_twd.c
index e1f9069..b22d700 100644
--- a/arch/arm/kernel/smp_twd.c
+++ b/arch/arm/kernel/smp_twd.c
@@ -42,10 +42,10 @@
switch (mode) {
case CLOCK_EVT_MODE_PERIODIC:
- /* timer load already set up */
ctrl = TWD_TIMER_CONTROL_ENABLE | TWD_TIMER_CONTROL_IT_ENABLE
| TWD_TIMER_CONTROL_PERIODIC;
- __raw_writel(twd_timer_rate / HZ, twd_base + TWD_TIMER_LOAD);
+ __raw_writel(DIV_ROUND_CLOSEST(twd_timer_rate, HZ),
+ twd_base + TWD_TIMER_LOAD);
break;
case CLOCK_EVT_MODE_ONESHOT:
/* period set, and timer enabled in 'next_event' hook */
diff --git a/arch/arm/lib/delay.c b/arch/arm/lib/delay.c
index 9d0a300..0dc5385 100644
--- a/arch/arm/lib/delay.c
+++ b/arch/arm/lib/delay.c
@@ -45,6 +45,7 @@
*timer_val = delay_timer->read_current_timer();
return 0;
}
+EXPORT_SYMBOL_GPL(read_current_timer);
static void __timer_delay(unsigned long cycles)
{
diff --git a/arch/arm/mm/alignment.c b/arch/arm/mm/alignment.c
index b9f60eb..023f4437 100644
--- a/arch/arm/mm/alignment.c
+++ b/arch/arm/mm/alignment.c
@@ -856,8 +856,10 @@
if (thumb2_32b) {
offset.un = 0;
handler = do_alignment_t32_to_handler(&instr, regs, &offset);
- } else
+ } else {
+ offset.un = 0;
handler = do_alignment_ldmstm;
+ }
break;
default:
diff --git a/arch/arm/tools/Makefile b/arch/arm/tools/Makefile
index 635cb186..cd60a811 100644
--- a/arch/arm/tools/Makefile
+++ b/arch/arm/tools/Makefile
@@ -5,6 +5,6 @@
#
include/generated/mach-types.h: $(src)/gen-mach-types $(src)/mach-types
- @echo ' Generating $@'
+ $(kecho) ' Generating $@'
@mkdir -p $(dir $@)
$(Q)$(AWK) -f $^ > $@ || { rm -f $@; /bin/false; }
diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig
index d4dffcd..126d8ce 100644
--- a/drivers/xen/Kconfig
+++ b/drivers/xen/Kconfig
@@ -3,6 +3,7 @@
config XEN_BALLOON
bool "Xen memory balloon driver"
+ depends on !ARM
default y
help
The balloon driver allows the Xen domain to request more memory from
@@ -145,6 +146,7 @@
config XEN_TMEM
bool
+ depends on !ARM
default y if (CLEANCACHE || FRONTSWAP)
help
Shim to interface in-kernel Transcendent Memory hooks
