diff options
| -rw-r--r-- | arch/um/kernel/skas/uaccess.c | 15 | ||||
| -rw-r--r-- | include/asm-um/kmap_types.h | 20 |
2 files changed, 28 insertions, 7 deletions
diff --git a/arch/um/kernel/skas/uaccess.c b/arch/um/kernel/skas/uaccess.c index 5992c325716..8912cec0fe4 100644 --- a/arch/um/kernel/skas/uaccess.c +++ b/arch/um/kernel/skas/uaccess.c @@ -8,6 +8,7 @@ #include "linux/kernel.h" #include "linux/string.h" #include "linux/fs.h" +#include "linux/hardirq.h" #include "linux/highmem.h" #include "asm/page.h" #include "asm/pgtable.h" @@ -38,7 +39,7 @@ static unsigned long maybe_map(unsigned long virt, int is_write) return((unsigned long) phys); } -static int do_op(unsigned long addr, int len, int is_write, +static int do_op_one_page(unsigned long addr, int len, int is_write, int (*op)(unsigned long addr, int len, void *arg), void *arg) { struct page *page; @@ -49,9 +50,11 @@ static int do_op(unsigned long addr, int len, int is_write, return(-1); page = phys_to_page(addr); - addr = (unsigned long) kmap(page) + (addr & ~PAGE_MASK); + addr = (unsigned long) kmap_atomic(page, KM_UML_USERCOPY) + (addr & ~PAGE_MASK); + n = (*op)(addr, len, arg); - kunmap(page); + + kunmap_atomic(page, KM_UML_USERCOPY); return(n); } @@ -77,7 +80,7 @@ static void do_buffer_op(void *jmpbuf, void *arg_ptr) remain = len; current->thread.fault_catcher = jmpbuf; - n = do_op(addr, size, is_write, op, arg); + n = do_op_one_page(addr, size, is_write, op, arg); if(n != 0){ *res = (n < 0 ? remain : 0); goto out; @@ -91,7 +94,7 @@ static void do_buffer_op(void *jmpbuf, void *arg_ptr) } while(addr < ((addr + remain) & PAGE_MASK)){ - n = do_op(addr, PAGE_SIZE, is_write, op, arg); + n = do_op_one_page(addr, PAGE_SIZE, is_write, op, arg); if(n != 0){ *res = (n < 0 ? remain : 0); goto out; @@ -105,7 +108,7 @@ static void do_buffer_op(void *jmpbuf, void *arg_ptr) goto out; } - n = do_op(addr, remain, is_write, op, arg); + n = do_op_one_page(addr, remain, is_write, op, arg); if(n != 0) *res = (n < 0 ? remain : 0); else *res = 0; diff --git a/include/asm-um/kmap_types.h b/include/asm-um/kmap_types.h index 0b22ad776e7..6c03acdb440 100644 --- a/include/asm-um/kmap_types.h +++ b/include/asm-um/kmap_types.h @@ -6,6 +6,24 @@ #ifndef __UM_KMAP_TYPES_H #define __UM_KMAP_TYPES_H -#include "asm/arch/kmap_types.h" +/* No more #include "asm/arch/kmap_types.h" ! */ + +enum km_type { + KM_BOUNCE_READ, + KM_SKB_SUNRPC_DATA, + KM_SKB_DATA_SOFTIRQ, + KM_USER0, + KM_USER1, + KM_UML_USERCOPY, /* UML specific, for copy_*_user - used in do_op_one_page */ + KM_BIO_SRC_IRQ, + KM_BIO_DST_IRQ, + KM_PTE0, + KM_PTE1, + KM_IRQ0, + KM_IRQ1, + KM_SOFTIRQ0, + KM_SOFTIRQ1, + KM_TYPE_NR +}; #endif |