Merge branch 'for-rmk' of git://linux-arm.org/linux-2.6 into devel
Conflicts:
arch/arm/Kconfig
arch/arm/kernel/smp.c
arch/arm/mach-realview/Makefile
arch/arm/mach-realview/platsmp.c
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index 83b1da6..fc8af43 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -482,6 +482,9 @@
subeq r4, r2, #4 @ ARM instr at LR - 4
subne r4, r2, #2 @ Thumb instr at LR - 2
1: ldreqt r0, [r4]
+#ifdef CONFIG_CPU_ENDIAN_BE8
+ reveq r0, r0 @ little endian instruction
+#endif
beq call_fpe
@ Thumb instruction
#if __LINUX_ARM_ARCH__ >= 7
diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S
index b55cb03..366e509 100644
--- a/arch/arm/kernel/entry-common.S
+++ b/arch/arm/kernel/entry-common.S
@@ -210,6 +210,9 @@
A710( teq ip, #0x0f000000 )
A710( bne .Larm710bug )
#endif
+#ifdef CONFIG_CPU_ENDIAN_BE8
+ rev r10, r10 @ little endian instruction
+#endif
#elif defined(CONFIG_AEABI)
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index c3265a2..1585423 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -365,7 +365,7 @@
regs.ARM_r2 = (unsigned long)fn;
regs.ARM_r3 = (unsigned long)do_exit;
regs.ARM_pc = (unsigned long)kernel_thread_helper;
- regs.ARM_cpsr = SVC_MODE;
+ regs.ARM_cpsr = SVC_MODE | PSR_ENDSTATE;
return do_fork(flags|CLONE_VM|CLONE_UNTRACED, 0, ®s, 0, NULL, NULL);
}
diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c
index 80b8b5c..442b874 100644
--- a/arch/arm/kernel/signal.c
+++ b/arch/arm/kernel/signal.c
@@ -426,9 +426,13 @@
*/
thumb = handler & 1;
- if (thumb)
+ if (thumb) {
cpsr |= PSR_T_BIT;
- else
+#if __LINUX_ARM_ARCH__ >= 7
+ /* clear the If-Then Thumb-2 execution state */
+ cpsr &= ~PSR_IT_MASK;
+#endif
+ } else
cpsr &= ~PSR_T_BIT;
}
#endif
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 0d8097f..de885fd 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -28,6 +28,7 @@
#include <asm/atomic.h>
#include <asm/cacheflush.h>
#include <asm/cpu.h>
+#include <asm/cputype.h>
#include <asm/mmu_context.h>
#include <asm/pgtable.h>
#include <asm/pgalloc.h>
@@ -585,6 +586,12 @@
unsigned long ta_end;
};
+/* all SMP configurations have the extended CPUID registers */
+static inline int tlb_ops_need_broadcast(void)
+{
+ return ((read_cpuid_ext(CPUID_EXT_MMFR3) >> 12) & 0xf) < 2;
+}
+
static inline void ipi_flush_tlb_all(void *ignored)
{
local_flush_tlb_all();
@@ -627,51 +634,61 @@
void flush_tlb_all(void)
{
- on_each_cpu(ipi_flush_tlb_all, NULL, 1);
+ if (tlb_ops_need_broadcast())
+ on_each_cpu(ipi_flush_tlb_all, NULL, 1);
+ else
+ local_flush_tlb_all();
}
void flush_tlb_mm(struct mm_struct *mm)
{
- on_each_cpu_mask(ipi_flush_tlb_mm, mm, 1, &mm->cpu_vm_mask);
+ if (tlb_ops_need_broadcast())
+ on_each_cpu_mask(ipi_flush_tlb_mm, mm, 1, &mm->cpu_vm_mask);
+ else
+ local_flush_tlb_mm(mm);
}
void flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr)
{
- struct tlb_args ta;
-
- ta.ta_vma = vma;
- ta.ta_start = uaddr;
-
- on_each_cpu_mask(ipi_flush_tlb_page, &ta, 1, &vma->vm_mm->cpu_vm_mask);
+ if (tlb_ops_need_broadcast()) {
+ struct tlb_args ta;
+ ta.ta_vma = vma;
+ ta.ta_start = uaddr;
+ on_each_cpu_mask(ipi_flush_tlb_page, &ta, 1, &vma->vm_mm->cpu_vm_mask);
+ } else
+ local_flush_tlb_page(vma, uaddr);
}
void flush_tlb_kernel_page(unsigned long kaddr)
{
- struct tlb_args ta;
-
- ta.ta_start = kaddr;
-
- on_each_cpu(ipi_flush_tlb_kernel_page, &ta, 1);
+ if (tlb_ops_need_broadcast()) {
+ struct tlb_args ta;
+ ta.ta_start = kaddr;
+ on_each_cpu(ipi_flush_tlb_kernel_page, &ta, 1);
+ } else
+ local_flush_tlb_kernel_page(kaddr);
}
void flush_tlb_range(struct vm_area_struct *vma,
unsigned long start, unsigned long end)
{
- struct tlb_args ta;
-
- ta.ta_vma = vma;
- ta.ta_start = start;
- ta.ta_end = end;
-
- on_each_cpu_mask(ipi_flush_tlb_range, &ta, 1, &vma->vm_mm->cpu_vm_mask);
+ if (tlb_ops_need_broadcast()) {
+ struct tlb_args ta;
+ ta.ta_vma = vma;
+ ta.ta_start = start;
+ ta.ta_end = end;
+ on_each_cpu_mask(ipi_flush_tlb_range, &ta, 1, &vma->vm_mm->cpu_vm_mask);
+ } else
+ local_flush_tlb_range(vma, start, end);
}
void flush_tlb_kernel_range(unsigned long start, unsigned long end)
{
- struct tlb_args ta;
-
- ta.ta_start = start;
- ta.ta_end = end;
-
- on_each_cpu(ipi_flush_tlb_kernel_range, &ta, 1);
+ if (tlb_ops_need_broadcast()) {
+ struct tlb_args ta;
+ ta.ta_start = start;
+ ta.ta_end = end;
+ on_each_cpu(ipi_flush_tlb_kernel_range, &ta, 1);
+ } else
+ local_flush_tlb_kernel_range(start, end);
}
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index c90f272..6c07797 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -141,6 +141,7 @@
.data : AT(__data_loc) {
_data = .; /* address in memory */
+ _sdata = .;
/*
* first, the init task union, aligned
@@ -192,6 +193,7 @@
__bss_start = .; /* BSS */
*(.bss)
*(COMMON)
+ __bss_stop = .;
_end = .;
}
/* Stabs debugging sections. */