diff options
Diffstat (limited to 'arch/um')
| -rw-r--r-- | arch/um/Makefile | 25 | ||||
| -rw-r--r-- | arch/um/include/mem.h | 12 | ||||
| -rw-r--r-- | arch/um/kernel/asm-offsets.c | 1 | ||||
| -rw-r--r-- | arch/um/kernel/dyn.lds.S | 37 | ||||
| -rw-r--r-- | arch/um/kernel/ksyms.c | 5 | ||||
| -rw-r--r-- | arch/um/kernel/physmem.c | 35 | ||||
| -rw-r--r-- | arch/um/kernel/trap_kern.c | 6 | ||||
| -rw-r--r-- | arch/um/kernel/uml.lds.S | 14 |
8 files changed, 44 insertions, 91 deletions
diff --git a/arch/um/Makefile b/arch/um/Makefile index b15f6048caa..ce987266dac 100644 --- a/arch/um/Makefile +++ b/arch/um/Makefile @@ -103,12 +103,11 @@ endef ifneq ($(KBUILD_SRC),) $(shell mkdir -p $(ARCH_DIR) && ln -fsn $(srctree)/$(ARCH_DIR)/Kconfig.$(SUBARCH) $(ARCH_DIR)/Kconfig.arch) -CLEAN_FILES += $(ARCH_DIR)/Kconfig.arch else $(shell cd $(ARCH_DIR) && ln -sf Kconfig.$(SUBARCH) Kconfig.arch) endif -prepare: $(ARCH_SYMLINKS) $(SYS_HEADERS) $(GEN_HEADERS) +archprepare: $(ARCH_SYMLINKS) $(SYS_HEADERS) $(GEN_HEADERS) LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib @@ -144,14 +143,14 @@ endef #TT or skas makefiles and don't clean skas_ptregs.h. CLEAN_FILES += linux x.i gmon.out $(ARCH_DIR)/include/uml-config.h \ $(GEN_HEADERS) $(ARCH_DIR)/include/skas_ptregs.h \ - $(ARCH_DIR)/include/user_constants.h + $(ARCH_DIR)/include/user_constants.h $(ARCH_DIR)/Kconfig.arch MRPROPER_FILES += $(SYMLINK_HEADERS) $(ARCH_SYMLINKS) \ - $(addprefix $(ARCH_DIR)/kernel/,$(KERN_SYMLINKS)) $(ARCH_DIR)/os \ - $(ARCH_DIR)/Kconfig.arch + $(addprefix $(ARCH_DIR)/kernel/,$(KERN_SYMLINKS)) $(ARCH_DIR)/os archclean: $(Q)$(MAKE) $(clean)=$(ARCH_DIR)/util + $(Q)$(MAKE) $(clean)=$(ARCH_DIR)/os-$(OS)/util @find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \ -o -name '*.gcov' \) -type f -print | xargs rm -f @@ -197,6 +196,22 @@ define filechk_umlconfig sed 's/ CONFIG/ UML_CONFIG/' endef +define filechk_gen-asm-offsets + (set -e; \ + echo "#ifndef __ASM_OFFSETS_H__"; \ + echo "#define __ASM_OFFSETS_H__"; \ + echo "/*"; \ + echo " * DO NOT MODIFY."; \ + echo " *"; \ + echo " * This file was generated by arch/$(ARCH)/Makefile"; \ + echo " *"; \ + echo " */"; \ + echo ""; \ + sed -ne "/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}"; \ + echo ""; \ + echo "#endif" ) +endef + $(ARCH_DIR)/include/uml-config.h : include/linux/autoconf.h $(call filechk,umlconfig) diff --git a/arch/um/include/mem.h b/arch/um/include/mem.h index 99d3ad4a03e..e8ff0d8fa61 100644 --- a/arch/um/include/mem.h +++ b/arch/um/include/mem.h @@ -13,7 +13,17 @@ extern int physmem_subst_mapping(void *virt, int fd, __u64 offset, int w); extern int is_remapped(void *virt); extern int physmem_remove_mapping(void *virt); extern void physmem_forget_descriptor(int fd); -extern unsigned long to_phys(void *virt); + +extern unsigned long uml_physmem; +static inline unsigned long to_phys(void *virt) +{ + return(((unsigned long) virt) - uml_physmem); +} + +static inline void *to_virt(unsigned long phys) +{ + return((void *) uml_physmem + phys); +} #endif diff --git a/arch/um/kernel/asm-offsets.c b/arch/um/kernel/asm-offsets.c new file mode 100644 index 00000000000..c13a64a288f --- /dev/null +++ b/arch/um/kernel/asm-offsets.c @@ -0,0 +1 @@ +/* Dummy file to make kbuild happy - unused! */ diff --git a/arch/um/kernel/dyn.lds.S b/arch/um/kernel/dyn.lds.S index 3942a5f245d..2517ecb8bf2 100644 --- a/arch/um/kernel/dyn.lds.S +++ b/arch/um/kernel/dyn.lds.S @@ -146,37 +146,8 @@ SECTIONS } _end = .; PROVIDE (end = .); - /* Stabs debugging sections. */ - .stab 0 : { *(.stab) } - .stabstr 0 : { *(.stabstr) } - .stab.excl 0 : { *(.stab.excl) } - .stab.exclstr 0 : { *(.stab.exclstr) } - .stab.index 0 : { *(.stab.index) } - .stab.indexstr 0 : { *(.stab.indexstr) } - .comment 0 : { *(.comment) } - /* DWARF debug sections. - Symbols in the DWARF debugging sections are relative to the beginning - of the section so we begin them at 0. */ - /* DWARF 1 */ - .debug 0 : { *(.debug) } - .line 0 : { *(.line) } - /* GNU DWARF 1 extensions */ - .debug_srcinfo 0 : { *(.debug_srcinfo) } - .debug_sfnames 0 : { *(.debug_sfnames) } - /* DWARF 1.1 and DWARF 2 */ - .debug_aranges 0 : { *(.debug_aranges) } - .debug_pubnames 0 : { *(.debug_pubnames) } - /* DWARF 2 */ - .debug_info 0 : { *(.debug_info .gnu.linkonce.wi.*) } - .debug_abbrev 0 : { *(.debug_abbrev) } - .debug_line 0 : { *(.debug_line) } - .debug_frame 0 : { *(.debug_frame) } - .debug_str 0 : { *(.debug_str) } - .debug_loc 0 : { *(.debug_loc) } - .debug_macinfo 0 : { *(.debug_macinfo) } - /* SGI/MIPS DWARF 2 extensions */ - .debug_weaknames 0 : { *(.debug_weaknames) } - .debug_funcnames 0 : { *(.debug_funcnames) } - .debug_typenames 0 : { *(.debug_typenames) } - .debug_varnames 0 : { *(.debug_varnames) } + + STABS_DEBUG + + DWARF_DEBUG } diff --git a/arch/um/kernel/ksyms.c b/arch/um/kernel/ksyms.c index 32d3076dd22..a97a72e516a 100644 --- a/arch/um/kernel/ksyms.c +++ b/arch/um/kernel/ksyms.c @@ -34,14 +34,9 @@ EXPORT_SYMBOL(host_task_size); EXPORT_SYMBOL(arch_validate); EXPORT_SYMBOL(get_kmem_end); -EXPORT_SYMBOL(page_to_phys); -EXPORT_SYMBOL(phys_to_page); EXPORT_SYMBOL(high_physmem); EXPORT_SYMBOL(empty_zero_page); EXPORT_SYMBOL(um_virt_to_phys); -EXPORT_SYMBOL(__virt_to_page); -EXPORT_SYMBOL(to_phys); -EXPORT_SYMBOL(to_virt); EXPORT_SYMBOL(mode_tt); EXPORT_SYMBOL(handle_page_fault); EXPORT_SYMBOL(find_iomem); diff --git a/arch/um/kernel/physmem.c b/arch/um/kernel/physmem.c index a24e3b7f4bf..ea670fcc8af 100644 --- a/arch/um/kernel/physmem.c +++ b/arch/um/kernel/physmem.c @@ -248,16 +248,6 @@ unsigned long high_physmem; extern unsigned long physmem_size; -void *to_virt(unsigned long phys) -{ - return((void *) uml_physmem + phys); -} - -unsigned long to_phys(void *virt) -{ - return(((unsigned long) virt) - uml_physmem); -} - int init_maps(unsigned long physmem, unsigned long iomem, unsigned long highmem) { struct page *p, *map; @@ -298,31 +288,6 @@ int init_maps(unsigned long physmem, unsigned long iomem, unsigned long highmem) return(0); } -struct page *phys_to_page(const unsigned long phys) -{ - return(&mem_map[phys >> PAGE_SHIFT]); -} - -struct page *__virt_to_page(const unsigned long virt) -{ - return(&mem_map[__pa(virt) >> PAGE_SHIFT]); -} - -phys_t page_to_phys(struct page *page) -{ - return((page - mem_map) << PAGE_SHIFT); -} - -pte_t mk_pte(struct page *page, pgprot_t pgprot) -{ - pte_t pte; - - pte_set_val(pte, page_to_phys(page), pgprot); - if(pte_present(pte)) - pte_mknewprot(pte_mknewpage(pte)); - return(pte); -} - /* Changed during early boot */ static unsigned long kmem_top = 0; diff --git a/arch/um/kernel/trap_kern.c b/arch/um/kernel/trap_kern.c index b5fc89fe9ea..87cc6fd76ce 100644 --- a/arch/um/kernel/trap_kern.c +++ b/arch/um/kernel/trap_kern.c @@ -57,7 +57,8 @@ good_area: if(is_write && !(vma->vm_flags & VM_WRITE)) goto out; - if(!(vma->vm_flags & (VM_READ | VM_EXEC))) + /* Don't require VM_READ|VM_EXEC for write faults! */ + if(!is_write && !(vma->vm_flags & (VM_READ | VM_EXEC))) goto out; do { @@ -84,8 +85,7 @@ survive: pte = pte_offset_kernel(pmd, address); } while(!pte_present(*pte)); err = 0; - *pte = pte_mkyoung(*pte); - if(pte_write(*pte)) *pte = pte_mkdirty(*pte); + WARN_ON(!pte_young(*pte) || (is_write && !pte_dirty(*pte))); flush_tlb_page(vma, address); out: up_read(&mm->mmap_sem); diff --git a/arch/um/kernel/uml.lds.S b/arch/um/kernel/uml.lds.S index b03326d391c..af11915ce0a 100644 --- a/arch/um/kernel/uml.lds.S +++ b/arch/um/kernel/uml.lds.S @@ -93,14 +93,10 @@ SECTIONS *(.bss) *(COMMON) } - _end = . ; + _end = .; PROVIDE (end = .); - /* Stabs debugging sections. */ - .stab 0 : { *(.stab) } - .stabstr 0 : { *(.stabstr) } - .stab.excl 0 : { *(.stab.excl) } - .stab.exclstr 0 : { *(.stab.exclstr) } - .stab.index 0 : { *(.stab.index) } - .stab.indexstr 0 : { *(.stab.indexstr) } - .comment 0 : { *(.comment) } + + STABS_DEBUG + + DWARF_DEBUG } |