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authorLinus Torvalds <torvalds@linux-foundation.org>2011-02-21 14:57:04 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2011-02-21 14:57:04 -0800
commit97b9c3e145a1ddb5a9d8115c82a8981b3f13cba2 (patch)
treec5df11be95a5512112dd19167a75d8716a782544 /arch/arm/kernel
parentf85cca6b25971a09efbe4c6a3ae405d40c8f86da (diff)
parent5a5af730536fbf15fc354980cba2a0400afa6b76 (diff)
Merge branch 'fixes' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'fixes' of master.kernel.org:/home/rmk/linux-2.6-arm: ARM: 6745/1: kprobes insn decoding fix ARM: tlb: move noMMU tlb_flush() to asm/tlb.h ARM: tlb: delay page freeing for SMP and ARMv7 CPUs ARM: Keep exit text/data around for SMP_ON_UP ARM: Ensure predictable endian state on signal handler entry ARM: 6740/1: Place correctly notes section in the linker script ARM: 6700/1: SPEAr: Correct SOC config base address for spear320 ARM: 6722/1: SPEAr: sp810: switch to slow mode before reset ARM: 6712/1: SPEAr: replace readl(), writel() with relaxed versions in uncompress.h ARM: 6720/1: SPEAr: Append UL to VMALLOC_END ARM: 6676/1: Correct the cpu_architecture() function for ARMv7 ARM: 6739/1: update .gitignore for boot/compressed ARM: 6743/1: errata: interrupted ICALLUIS may prevent completion of broadcasted operation ARM: 6742/1: pmu: avoid setting IRQ affinity on UP systems ARM: 6741/1: errata: pl310 cache sync operation may be faulty
Diffstat (limited to 'arch/arm/kernel')
-rw-r--r--arch/arm/kernel/kprobes-decode.c2
-rw-r--r--arch/arm/kernel/pmu.c22
-rw-r--r--arch/arm/kernel/setup.c4
-rw-r--r--arch/arm/kernel/signal.c4
-rw-r--r--arch/arm/kernel/vmlinux.lds.S11
5 files changed, 31 insertions, 12 deletions
diff --git a/arch/arm/kernel/kprobes-decode.c b/arch/arm/kernel/kprobes-decode.c
index 2c1f0050c9c..8f6ed43861f 100644
--- a/arch/arm/kernel/kprobes-decode.c
+++ b/arch/arm/kernel/kprobes-decode.c
@@ -1437,7 +1437,7 @@ arm_kprobe_decode_insn(kprobe_opcode_t insn, struct arch_specific_insn *asi)
return space_cccc_1100_010x(insn, asi);
- } else if ((insn & 0x0e000000) == 0x0c400000) {
+ } else if ((insn & 0x0e000000) == 0x0c000000) {
return space_cccc_110x(insn, asi);
diff --git a/arch/arm/kernel/pmu.c b/arch/arm/kernel/pmu.c
index b8af96ea62e..2c79eec1926 100644
--- a/arch/arm/kernel/pmu.c
+++ b/arch/arm/kernel/pmu.c
@@ -97,28 +97,34 @@ set_irq_affinity(int irq,
irq, cpu);
return err;
#else
- return 0;
+ return -EINVAL;
#endif
}
static int
init_cpu_pmu(void)
{
- int i, err = 0;
+ int i, irqs, err = 0;
struct platform_device *pdev = pmu_devices[ARM_PMU_DEVICE_CPU];
- if (!pdev) {
- err = -ENODEV;
- goto out;
- }
+ if (!pdev)
+ return -ENODEV;
+
+ irqs = pdev->num_resources;
+
+ /*
+ * If we have a single PMU interrupt that we can't shift, assume that
+ * we're running on a uniprocessor machine and continue.
+ */
+ if (irqs == 1 && !irq_can_set_affinity(platform_get_irq(pdev, 0)))
+ return 0;
- for (i = 0; i < pdev->num_resources; ++i) {
+ for (i = 0; i < irqs; ++i) {
err = set_irq_affinity(platform_get_irq(pdev, i), i);
if (err)
break;
}
-out:
return err;
}
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 420b8d6485d..5ea4fb718b9 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -226,8 +226,8 @@ int cpu_architecture(void)
* Register 0 and check for VMSAv7 or PMSAv7 */
asm("mrc p15, 0, %0, c0, c1, 4"
: "=r" (mmfr0));
- if ((mmfr0 & 0x0000000f) == 0x00000003 ||
- (mmfr0 & 0x000000f0) == 0x00000030)
+ if ((mmfr0 & 0x0000000f) >= 0x00000003 ||
+ (mmfr0 & 0x000000f0) >= 0x00000030)
cpu_arch = CPU_ARCH_ARMv7;
else if ((mmfr0 & 0x0000000f) == 0x00000002 ||
(mmfr0 & 0x000000f0) == 0x00000020)
diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c
index 907d5a620bc..abaf8445ce2 100644
--- a/arch/arm/kernel/signal.c
+++ b/arch/arm/kernel/signal.c
@@ -474,7 +474,9 @@ setup_return(struct pt_regs *regs, struct k_sigaction *ka,
unsigned long handler = (unsigned long)ka->sa.sa_handler;
unsigned long retcode;
int thumb = 0;
- unsigned long cpsr = regs->ARM_cpsr & ~PSR_f;
+ unsigned long cpsr = regs->ARM_cpsr & ~(PSR_f | PSR_E_BIT);
+
+ cpsr |= PSR_ENDSTATE;
/*
* Maybe we need to deliver a 32-bit signal to a 26-bit task.
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index 86b66f3f203..61462790757 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -21,6 +21,12 @@
#define ARM_CPU_KEEP(x)
#endif
+#if defined(CONFIG_SMP_ON_UP) && !defined(CONFIG_DEBUG_SPINLOCK)
+#define ARM_EXIT_KEEP(x) x
+#else
+#define ARM_EXIT_KEEP(x)
+#endif
+
OUTPUT_ARCH(arm)
ENTRY(stext)
@@ -43,6 +49,7 @@ SECTIONS
_sinittext = .;
HEAD_TEXT
INIT_TEXT
+ ARM_EXIT_KEEP(EXIT_TEXT)
_einittext = .;
ARM_CPU_DISCARD(PROC_INFO)
__arch_info_begin = .;
@@ -67,6 +74,7 @@ SECTIONS
#ifndef CONFIG_XIP_KERNEL
__init_begin = _stext;
INIT_DATA
+ ARM_EXIT_KEEP(EXIT_DATA)
#endif
}
@@ -162,6 +170,7 @@ SECTIONS
. = ALIGN(PAGE_SIZE);
__init_begin = .;
INIT_DATA
+ ARM_EXIT_KEEP(EXIT_DATA)
. = ALIGN(PAGE_SIZE);
__init_end = .;
#endif
@@ -247,6 +256,8 @@ SECTIONS
}
#endif
+ NOTES
+
BSS_SECTION(0, 0, 0)
_end = .;