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Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc

Browse Source 
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
  powerpc: Fix for getting CPU number in power_save_ppc32_restore()
  powerpc: Fix build error with 64K pages and !hugetlbfs
  powerpc: Work around gcc's -fno-omit-frame-pointer bug
  powerpc: Make sure _etext is after all kernel text
  powerpc: Only make kernel text pages of linear mapping executable
  powerpc: Fix uninitialised variable in VSX alignment code
This commit is contained in:
Linus Torvalds 2008-09-03 17:36:37 -07:00
commit 3e25a2d90e
10 changed files with 34 additions and 24 deletions
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5
arch/powerpc/Makefile
View File

@ -116,6 +116,11 @@ ifeq ($(CONFIG_6xx),y)
KBUILD_CFLAGS += -mcpu=powerpc
endif
# Work around a gcc code-gen bug with -fno-omit-frame-pointer.
ifeq ($(CONFIG_FTRACE),y)
KBUILD_CFLAGS += -mno-sched-epilog
endif
cpu-as-$(CONFIG_4xx) += -Wa,-m405
cpu-as-$(CONFIG_6xx) += -Wa,-maltivec
cpu-as-$(CONFIG_POWER4) += -Wa,-maltivec

6
arch/powerpc/include/asm/pgtable-ppc64.h
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@ -153,12 +153,10 @@
#define __S110 PAGE_SHARED_X
#define __S111 PAGE_SHARED_X
#ifdef CONFIG_HUGETLB_PAGE
#ifdef CONFIG_PPC_MM_SLICES
#define HAVE_ARCH_UNMAPPED_AREA
#define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN
#endif
#endif /* CONFIG_PPC_MM_SLICES */
#ifndef __ASSEMBLY__

7
arch/powerpc/kernel/Makefile
View File

@ -14,12 +14,13 @@ endif
ifdef CONFIG_FTRACE
# Do not trace early boot code
CFLAGS_REMOVE_cputable.o = -pg
CFLAGS_REMOVE_prom_init.o = -pg
CFLAGS_REMOVE_cputable.o = -pg -mno-sched-epilog
CFLAGS_REMOVE_prom_init.o = -pg -mno-sched-epilog
CFLAGS_REMOVE_btext.o = -pg -mno-sched-epilog
ifdef CONFIG_DYNAMIC_FTRACE
# dynamic ftrace setup.
CFLAGS_REMOVE_ftrace.o = -pg
CFLAGS_REMOVE_ftrace.o = -pg -mno-sched-epilog
endif
endif

2
arch/powerpc/kernel/align.c
View File

@ -647,7 +647,7 @@ static int emulate_vsx(unsigned char __user *addr, unsigned int reg,
unsigned int flags, unsigned int length)
{
char *ptr = (char *) &current->thread.TS_FPR(reg);
int ret;
int ret = 0;
flush_vsx_to_thread(current);

2
arch/powerpc/kernel/idle_6xx.S
View File

@ -158,7 +158,7 @@ _GLOBAL(power_save_ppc32_restore)
stw r9,_NIP(r11) /* make it do a blr */
#ifdef CONFIG_SMP
mfspr r12,SPRN_SPRG3
rlwinm r12,r11,0,0,31-THREAD_SHIFT
lwz r11,TI_CPU(r12) /* get cpu number * 4 */
slwi r11,r11,2
#else

3
arch/powerpc/kernel/idle_e500.S
View File

@ -84,10 +84,11 @@ _GLOBAL(power_save_ppc32_restore)
stw r9,_NIP(r11) /* make it do a blr */
#ifdef CONFIG_SMP
mfspr r12,SPRN_SPRG3
rlwinm r12,r1,0,0,31-THREAD_SHIFT
lwz r11,TI_CPU(r12) /* get cpu number * 4 */
slwi r11,r11,2
#else
li r11,0
#endif
b transfer_to_handler_cont

7
arch/powerpc/kernel/vmlinux.lds.S
View File

@ -66,11 +66,12 @@ SECTIONS
__got2_end = .;
#endif /* CONFIG_PPC32 */
. = ALIGN(PAGE_SIZE);
_etext = .;
PROVIDE32 (etext = .);
} :kernel
. = ALIGN(PAGE_SIZE);
_etext = .;
PROVIDE32 (etext = .);
/* Read-only data */
RODATA

18
arch/powerpc/mm/hash_utils_64.c
View File

@ -191,12 +191,17 @@ int htab_bolt_mapping(unsigned long vstart, unsigned long vend,
unsigned long hash, hpteg;
unsigned long vsid = get_kernel_vsid(vaddr, ssize);
unsigned long va = hpt_va(vaddr, vsid, ssize);
unsigned long tprot = prot;
/* Make kernel text executable */
if (in_kernel_text(vaddr))
tprot &= ~HPTE_R_N;
hash = hpt_hash(va, shift, ssize);
hpteg = ((hash & htab_hash_mask) * HPTES_PER_GROUP);
BUG_ON(!ppc_md.hpte_insert);
ret = ppc_md.hpte_insert(hpteg, va, paddr, prot,
ret = ppc_md.hpte_insert(hpteg, va, paddr, tprot,
HPTE_V_BOLTED, psize, ssize);
if (ret < 0)
@ -584,7 +589,7 @@ void __init htab_initialize(void)
{
unsigned long table;
unsigned long pteg_count;
unsigned long prot, tprot;
unsigned long prot;
unsigned long base = 0, size = 0, limit;
int i;
@ -660,10 +665,9 @@ void __init htab_initialize(void)
for (i=0; i < lmb.memory.cnt; i++) {
base = (unsigned long)__va(lmb.memory.region[i].base);
size = lmb.memory.region[i].size;
tprot = prot | (in_kernel_text(base) ? _PAGE_EXEC : 0);
DBG("creating mapping for region: %lx..%lx (prot: %x)\n",
base, size, tprot);
base, size, prot);
#ifdef CONFIG_U3_DART
/* Do not map the DART space. Fortunately, it will be aligned
@ -680,21 +684,21 @@ void __init htab_initialize(void)
unsigned long dart_table_end = dart_tablebase + 16 * MB;
if (base != dart_tablebase)
BUG_ON(htab_bolt_mapping(base, dart_tablebase,
__pa(base), tprot,
__pa(base), prot,
mmu_linear_psize,
mmu_kernel_ssize));
if ((base + size) > dart_table_end)
BUG_ON(htab_bolt_mapping(dart_tablebase+16*MB,
base + size,
__pa(dart_table_end),
tprot,
prot,
mmu_linear_psize,
mmu_kernel_ssize));
continue;
}
#endif /* CONFIG_U3_DART */
BUG_ON(htab_bolt_mapping(base, base + size, __pa(base),
tprot, mmu_linear_psize, mmu_kernel_ssize));
prot, mmu_linear_psize, mmu_kernel_ssize));
}
/*

2
arch/powerpc/platforms/powermac/Makefile
View File

@ -2,7 +2,7 @@ CFLAGS_bootx_init.o += -fPIC
ifdef CONFIG_FTRACE
# Do not trace early boot code
CFLAGS_REMOVE_bootx_init.o = -pg
CFLAGS_REMOVE_bootx_init.o = -pg -mno-sched-epilog
endif
obj-y += pic.o setup.o time.o feature.o pci.o \

6
lib/Kconfig.debug
View File

@ -394,7 +394,7 @@ config LOCKDEP
bool
depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT
select STACKTRACE
select FRAME_POINTER if !X86 && !MIPS
select FRAME_POINTER if !X86 && !MIPS && !PPC
select KALLSYMS
select KALLSYMS_ALL
@ -676,13 +676,13 @@ config FAULT_INJECTION_STACKTRACE_FILTER
depends on FAULT_INJECTION_DEBUG_FS && STACKTRACE_SUPPORT
depends on !X86_64
select STACKTRACE
select FRAME_POINTER
select FRAME_POINTER if !PPC
help
Provide stacktrace filter for fault-injection capabilities
config LATENCYTOP
bool "Latency measuring infrastructure"
select FRAME_POINTER if !MIPS
select FRAME_POINTER if !MIPS && !PPC
select KALLSYMS
select KALLSYMS_ALL
select STACKTRACE