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authorLinus Torvalds <torvalds@linux-foundation.org>2011-05-20 13:28:01 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-05-20 13:28:01 -0700
commit82aff107f8c9194586f68e86412246629d05670a (patch)
treec4336e8bbd453235dafecba6b8dca24c8cbcb2e5 /arch/powerpc/lib
parentd974d905cbfc1039a73ba0c7eea3f4d4e13c0624 (diff)
parent208b3a4c196e733b9cec006dc132cfc149b2810a (diff)
Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (152 commits) powerpc: Fix hard CPU IDs detection powerpc/pmac: Update via-pmu to new syscore_ops powerpc/kvm: Fix the build for 32-bit Book 3S (classic) processors powerpc/kvm: Fix kvmppc_core_pending_dec powerpc: Remove last piece of GEMINI powerpc: Fix for Pegasos keyboard and mouse powerpc: Make early memory scan more resilient to out of order nodes powerpc/pseries/iommu: Cleanup ddw naming powerpc/pseries/iommu: Find windows after kexec during boot powerpc/pseries/iommu: Remove ddw property when destroying window powerpc/pseries/iommu: Add additional checks when changing iommu mask powerpc/pseries/iommu: Use correct return type in dupe_ddw_if_already_created powerpc: Remove unused/obsolete CONFIG_XICS misc: Add CARMA DATA-FPGA Programmer support misc: Add CARMA DATA-FPGA Access Driver powerpc: Make IRQ_NOREQUEST last to clear, first to set powerpc: Integrated Flash controller device tree bindings powerpc/85xx: Create dts of each core in CAMP mode for P1020RDB powerpc/85xx: Fix PCIe IDSEL for Px020RDB powerpc/85xx: P2020 DTS: re-organize dts files ...
Diffstat (limited to 'arch/powerpc/lib')
-rw-r--r--arch/powerpc/lib/alloc.c8
-rw-r--r--arch/powerpc/lib/copypage_64.S7
-rw-r--r--arch/powerpc/lib/devres.c6
-rw-r--r--arch/powerpc/lib/sstep.c61
4 files changed, 34 insertions, 48 deletions
diff --git a/arch/powerpc/lib/alloc.c b/arch/powerpc/lib/alloc.c
index f53e09c7dac7..13b676c20d12 100644
--- a/arch/powerpc/lib/alloc.c
+++ b/arch/powerpc/lib/alloc.c
@@ -6,14 +6,6 @@
#include <asm/system.h>
-void * __init_refok alloc_maybe_bootmem(size_t size, gfp_t mask)
-{
- if (mem_init_done)
- return kmalloc(size, mask);
- else
- return alloc_bootmem(size);
-}
-
void * __init_refok zalloc_maybe_bootmem(size_t size, gfp_t mask)
{
void *p;
diff --git a/arch/powerpc/lib/copypage_64.S b/arch/powerpc/lib/copypage_64.S
index 4d4eeb900486..53dcb6b1b708 100644
--- a/arch/powerpc/lib/copypage_64.S
+++ b/arch/powerpc/lib/copypage_64.S
@@ -6,6 +6,7 @@
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
+#include <asm/page.h>
#include <asm/processor.h>
#include <asm/ppc_asm.h>
#include <asm/asm-offsets.h>
@@ -15,9 +16,9 @@ PPC64_CACHES:
.tc ppc64_caches[TC],ppc64_caches
.section ".text"
-
-_GLOBAL(copy_4K_page)
- li r5,4096 /* 4K page size */
+_GLOBAL(copy_page)
+ lis r5,PAGE_SIZE@h
+ ori r5,r5,PAGE_SIZE@l
BEGIN_FTR_SECTION
ld r10,PPC64_CACHES@toc(r2)
lwz r11,DCACHEL1LOGLINESIZE(r10) /* log2 of cache line size */
diff --git a/arch/powerpc/lib/devres.c b/arch/powerpc/lib/devres.c
index deac4d30daf4..e91615abae66 100644
--- a/arch/powerpc/lib/devres.c
+++ b/arch/powerpc/lib/devres.c
@@ -9,11 +9,11 @@
#include <linux/device.h> /* devres_*(), devm_ioremap_release() */
#include <linux/gfp.h>
-#include <linux/io.h> /* ioremap_flags() */
+#include <linux/io.h> /* ioremap_prot() */
#include <linux/module.h> /* EXPORT_SYMBOL() */
/**
- * devm_ioremap_prot - Managed ioremap_flags()
+ * devm_ioremap_prot - Managed ioremap_prot()
* @dev: Generic device to remap IO address for
* @offset: BUS offset to map
* @size: Size of map
@@ -31,7 +31,7 @@ void __iomem *devm_ioremap_prot(struct device *dev, resource_size_t offset,
if (!ptr)
return NULL;
- addr = ioremap_flags(offset, size, flags);
+ addr = ioremap_prot(offset, size, flags);
if (addr) {
*ptr = addr;
devres_add(dev, ptr);
diff --git a/arch/powerpc/lib/sstep.c b/arch/powerpc/lib/sstep.c
index f73daa6f3970..9a52349874ee 100644
--- a/arch/powerpc/lib/sstep.c
+++ b/arch/powerpc/lib/sstep.c
@@ -46,6 +46,18 @@ extern int do_stxvd2x(int rn, unsigned long ea);
#endif
/*
+ * Emulate the truncation of 64 bit values in 32-bit mode.
+ */
+static unsigned long truncate_if_32bit(unsigned long msr, unsigned long val)
+{
+#ifdef __powerpc64__
+ if ((msr & MSR_64BIT) == 0)
+ val &= 0xffffffffUL;
+#endif
+ return val;
+}
+
+/*
* Determine whether a conditional branch instruction would branch.
*/
static int __kprobes branch_taken(unsigned int instr, struct pt_regs *regs)
@@ -91,11 +103,8 @@ static unsigned long __kprobes dform_ea(unsigned int instr, struct pt_regs *regs
if (instr & 0x04000000) /* update forms */
regs->gpr[ra] = ea;
}
-#ifdef __powerpc64__
- if (!(regs->msr & MSR_SF))
- ea &= 0xffffffffUL;
-#endif
- return ea;
+
+ return truncate_if_32bit(regs->msr, ea);
}
#ifdef __powerpc64__
@@ -114,9 +123,8 @@ static unsigned long __kprobes dsform_ea(unsigned int instr, struct pt_regs *reg
if ((instr & 3) == 1) /* update forms */
regs->gpr[ra] = ea;
}
- if (!(regs->msr & MSR_SF))
- ea &= 0xffffffffUL;
- return ea;
+
+ return truncate_if_32bit(regs->msr, ea);
}
#endif /* __powerpc64 */
@@ -137,11 +145,8 @@ static unsigned long __kprobes xform_ea(unsigned int instr, struct pt_regs *regs
if (do_update) /* update forms */
regs->gpr[ra] = ea;
}
-#ifdef __powerpc64__
- if (!(regs->msr & MSR_SF))
- ea &= 0xffffffffUL;
-#endif
- return ea;
+
+ return truncate_if_32bit(regs->msr, ea);
}
/*
@@ -467,7 +472,7 @@ static void __kprobes set_cr0(struct pt_regs *regs, int rd)
regs->ccr = (regs->ccr & 0x0fffffff) | ((regs->xer >> 3) & 0x10000000);
#ifdef __powerpc64__
- if (!(regs->msr & MSR_SF))
+ if (!(regs->msr & MSR_64BIT))
val = (int) val;
#endif
if (val < 0)
@@ -488,7 +493,7 @@ static void __kprobes add_with_carry(struct pt_regs *regs, int rd,
++val;
regs->gpr[rd] = val;
#ifdef __powerpc64__
- if (!(regs->msr & MSR_SF)) {
+ if (!(regs->msr & MSR_64BIT)) {
val = (unsigned int) val;
val1 = (unsigned int) val1;
}
@@ -571,8 +576,7 @@ int __kprobes emulate_step(struct pt_regs *regs, unsigned int instr)
if ((instr & 2) == 0)
imm += regs->nip;
regs->nip += 4;
- if ((regs->msr & MSR_SF) == 0)
- regs->nip &= 0xffffffffUL;
+ regs->nip = truncate_if_32bit(regs->msr, regs->nip);
if (instr & 1)
regs->link = regs->nip;
if (branch_taken(instr, regs))
@@ -605,13 +609,9 @@ int __kprobes emulate_step(struct pt_regs *regs, unsigned int instr)
imm -= 0x04000000;
if ((instr & 2) == 0)
imm += regs->nip;
- if (instr & 1) {
- regs->link = regs->nip + 4;
- if ((regs->msr & MSR_SF) == 0)
- regs->link &= 0xffffffffUL;
- }
- if ((regs->msr & MSR_SF) == 0)
- imm &= 0xffffffffUL;
+ if (instr & 1)
+ regs->link = truncate_if_32bit(regs->msr, regs->nip + 4);
+ imm = truncate_if_32bit(regs->msr, imm);
regs->nip = imm;
return 1;
case 19:
@@ -619,11 +619,8 @@ int __kprobes emulate_step(struct pt_regs *regs, unsigned int instr)
case 16: /* bclr */
case 528: /* bcctr */
imm = (instr & 0x400)? regs->ctr: regs->link;
- regs->nip += 4;
- if ((regs->msr & MSR_SF) == 0) {
- regs->nip &= 0xffffffffUL;
- imm &= 0xffffffffUL;
- }
+ regs->nip = truncate_if_32bit(regs->msr, regs->nip + 4);
+ imm = truncate_if_32bit(regs->msr, imm);
if (instr & 1)
regs->link = regs->nip;
if (branch_taken(instr, regs))
@@ -1617,11 +1614,7 @@ int __kprobes emulate_step(struct pt_regs *regs, unsigned int instr)
return 0; /* invoke DSI if -EFAULT? */
}
instr_done:
- regs->nip += 4;
-#ifdef __powerpc64__
- if ((regs->msr & MSR_SF) == 0)
- regs->nip &= 0xffffffffUL;
-#endif
+ regs->nip = truncate_if_32bit(regs->msr, regs->nip + 4);
return 1;
logical_done: