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-rw-r--r--arch/um/kernel/asm-offsets.c1
-rw-r--r--arch/um/kernel/dyn.lds.S37
-rw-r--r--arch/um/kernel/ksyms.c5
-rw-r--r--arch/um/kernel/physmem.c35
-rw-r--r--arch/um/kernel/skas/include/uaccess-skas.h14
-rw-r--r--arch/um/kernel/trap_kern.c6
-rw-r--r--arch/um/kernel/tt/include/uaccess-tt.h14
-rw-r--r--arch/um/kernel/uml.lds.S14
8 files changed, 27 insertions, 99 deletions
diff --git a/arch/um/kernel/asm-offsets.c b/arch/um/kernel/asm-offsets.c
new file mode 100644
index 000000000000..c13a64a288f6
--- /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 3942a5f245de..2517ecb8bf27 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 32d3076dd220..a97a72e516aa 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 a24e3b7f4bf0..ea670fcc8af5 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/skas/include/uaccess-skas.h b/arch/um/kernel/skas/include/uaccess-skas.h
index cd6c280482cb..6ee3f3902e68 100644
--- a/arch/um/kernel/skas/include/uaccess-skas.h
+++ b/arch/um/kernel/skas/include/uaccess-skas.h
@@ -18,18 +18,18 @@
((unsigned long) (addr) + (size) <= FIXADDR_USER_END) && \
((unsigned long) (addr) + (size) >= (unsigned long)(addr))))
-static inline int verify_area_skas(int type, const void * addr,
+static inline int verify_area_skas(int type, const void __user * addr,
unsigned long size)
{
return(access_ok_skas(type, addr, size) ? 0 : -EFAULT);
}
-extern int copy_from_user_skas(void *to, const void *from, int n);
-extern int copy_to_user_skas(void *to, const void *from, int n);
-extern int strncpy_from_user_skas(char *dst, const char *src, int count);
-extern int __clear_user_skas(void *mem, int len);
-extern int clear_user_skas(void *mem, int len);
-extern int strnlen_user_skas(const void *str, int len);
+extern int copy_from_user_skas(void *to, const void __user *from, int n);
+extern int copy_to_user_skas(void __user *to, const void *from, int n);
+extern int strncpy_from_user_skas(char *dst, const char __user *src, int count);
+extern int __clear_user_skas(void __user *mem, int len);
+extern int clear_user_skas(void __user *mem, int len);
+extern int strnlen_user_skas(const void __user *str, int len);
#endif
diff --git a/arch/um/kernel/trap_kern.c b/arch/um/kernel/trap_kern.c
index b5fc89fe9eab..87cc6fd76ced 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/tt/include/uaccess-tt.h b/arch/um/kernel/tt/include/uaccess-tt.h
index 3fbb5fe26f49..aa6db384af80 100644
--- a/arch/um/kernel/tt/include/uaccess-tt.h
+++ b/arch/um/kernel/tt/include/uaccess-tt.h
@@ -33,7 +33,7 @@ extern unsigned long uml_physmem;
(((unsigned long) (addr) <= ((unsigned long) (addr) + (size))) && \
(under_task_size(addr, size) || is_stack(addr, size))))
-static inline int verify_area_tt(int type, const void * addr,
+static inline int verify_area_tt(int type, const void __user * addr,
unsigned long size)
{
return(access_ok_tt(type, addr, size) ? 0 : -EFAULT);
@@ -50,12 +50,12 @@ extern int __do_clear_user(void *mem, size_t len, void **fault_addr,
extern int __do_strnlen_user(const char *str, unsigned long n,
void **fault_addr, void **fault_catcher);
-extern int copy_from_user_tt(void *to, const void *from, int n);
-extern int copy_to_user_tt(void *to, const void *from, int n);
-extern int strncpy_from_user_tt(char *dst, const char *src, int count);
-extern int __clear_user_tt(void *mem, int len);
-extern int clear_user_tt(void *mem, int len);
-extern int strnlen_user_tt(const void *str, int len);
+extern int copy_from_user_tt(void *to, const void __user *from, int n);
+extern int copy_to_user_tt(void __user *to, const void *from, int n);
+extern int strncpy_from_user_tt(char *dst, const char __user *src, int count);
+extern int __clear_user_tt(void __user *mem, int len);
+extern int clear_user_tt(void __user *mem, int len);
+extern int strnlen_user_tt(const void __user *str, int len);
#endif
diff --git a/arch/um/kernel/uml.lds.S b/arch/um/kernel/uml.lds.S
index b03326d391c9..af11915ce0a8 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
}
generated by cgit v1.2.3 (git 2.39.1) at 2025-02-01 10:43:26 +0100