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uml: fold mmu_context_skas into mm_context

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This patch folds mmu_context_skas into struct mm_context, changing all users
of these structures as needed.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jeff Dike
2007-10-16 01:27:06 -07:00
committed by Linus Torvalds
parent fab95c55e3
commit 6c738ffa9f
12 changed files with 58 additions and 75 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
arch/um/kernel/exec.c
View File

@@ -23,14 +23,14 @@ void flush_thread(void)
arch_flush_thread(&current->thread.arch);
ret = unmap(&current->mm->context.skas.id, 0, end, 1, &data);
ret = unmap(&current->mm->context.id, 0, end, 1, &data);
if (ret) {
printk(KERN_ERR "flush_thread - clearing address space failed, "
"err = %d\n", ret);
force_sig(SIGKILL, current);
}
__switch_mm(&current->mm->context.skas.id);
__switch_mm(&current->mm->context.id);
}
void start_thread(struct pt_regs *regs, unsigned long eip, unsigned long esp)

2
arch/um/kernel/reboot.c
View File

@@ -25,7 +25,7 @@ static void kill_off_processes(void)
if(p->mm == NULL)
continue;
pid = p->mm->context.skas.id.u.pid;
pid = p->mm->context.id.u.pid;
os_kill_ptraced_process(pid, 1);
}
}

12
arch/um/kernel/skas/mmu.c
View File

@@ -47,9 +47,9 @@ static int init_stub_pte(struct mm_struct *mm, unsigned long proc,
* destroy_context_skas.
*/
mm->context.skas.last_page_table = pmd_page_vaddr(*pmd);
mm->context.last_page_table = pmd_page_vaddr(*pmd);
#ifdef CONFIG_3_LEVEL_PGTABLES
mm->context.skas.last_pmd = (unsigned long) __va(pud_val(*pud));
mm->context.last_pmd = (unsigned long) __va(pud_val(*pud));
#endif
*pte = mk_pte(virt_to_page(kernel), __pgprot(_PAGE_PRESENT));
@@ -66,8 +66,8 @@ static int init_stub_pte(struct mm_struct *mm, unsigned long proc,
int init_new_context(struct task_struct *task, struct mm_struct *mm)
{
struct mmu_context_skas *from_mm = NULL;
struct mmu_context_skas *to_mm = &mm->context.skas;
struct mm_context *from_mm = NULL;
struct mm_context *to_mm = &mm->context;
unsigned long stack = 0;
int ret = -ENOMEM;
@@ -97,7 +97,7 @@ int init_new_context(struct task_struct *task, struct mm_struct *mm)
to_mm->id.stack = stack;
if (current->mm != NULL && current->mm != &init_mm)
from_mm = &current->mm->context.skas;
from_mm = &current->mm->context;
if (proc_mm) {
ret = new_mm(stack);
@@ -133,7 +133,7 @@ int init_new_context(struct task_struct *task, struct mm_struct *mm)
void destroy_context(struct mm_struct *mm)
{
struct mmu_context_skas *mmu = &mm->context.skas;
struct mm_context *mmu = &mm->context;
if (proc_mm)
os_close_file(mmu->id.u.mm_fd);

2
arch/um/kernel/skas/process.c
View File

@@ -65,5 +65,5 @@ unsigned long current_stub_stack(void)
if (current->mm == NULL)
return 0;
return current->mm->context.skas.id.stack;
return current->mm->context.id.stack;
}

43
arch/um/kernel/tlb.c
View File

@@ -14,8 +14,8 @@
static int add_mmap(unsigned long virt, unsigned long phys, unsigned long len,
unsigned int prot, struct host_vm_op *ops, int *index,
int last_filled, union mm_context *mmu, void **flush,
int (*do_ops)(union mm_context *, struct host_vm_op *,
int last_filled, struct mm_context *mmu, void **flush,
int (*do_ops)(struct mm_context *, struct host_vm_op *,
int, int, void **))
{
__u64 offset;
@@ -52,8 +52,8 @@ static int add_mmap(unsigned long virt, unsigned long phys, unsigned long len,
static int add_munmap(unsigned long addr, unsigned long len,
struct host_vm_op *ops, int *index, int last_filled,
union mm_context *mmu, void **flush,
int (*do_ops)(union mm_context *, struct host_vm_op *,
struct mm_context *mmu, void **flush,
int (*do_ops)(struct mm_context *, struct host_vm_op *,
int, int, void **))
{
struct host_vm_op *last;
@@ -82,8 +82,8 @@ static int add_munmap(unsigned long addr, unsigned long len,
static int add_mprotect(unsigned long addr, unsigned long len,
unsigned int prot, struct host_vm_op *ops, int *index,
int last_filled, union mm_context *mmu, void **flush,
int (*do_ops)(union mm_context *, struct host_vm_op *,
int last_filled, struct mm_context *mmu, void **flush,
int (*do_ops)(struct mm_context *, struct host_vm_op *,
int, int, void **))
{
struct host_vm_op *last;
@@ -117,8 +117,8 @@ static int add_mprotect(unsigned long addr, unsigned long len,
static inline int update_pte_range(pmd_t *pmd, unsigned long addr,
unsigned long end, struct host_vm_op *ops,
int last_op, int *op_index, int force,
union mm_context *mmu, void **flush,
int (*do_ops)(union mm_context *,
struct mm_context *mmu, void **flush,
int (*do_ops)(struct mm_context *,
struct host_vm_op *, int, int,
void **))
{
@@ -157,8 +157,8 @@ static inline int update_pte_range(pmd_t *pmd, unsigned long addr,
static inline int update_pmd_range(pud_t *pud, unsigned long addr,
unsigned long end, struct host_vm_op *ops,
int last_op, int *op_index, int force,
union mm_context *mmu, void **flush,
int (*do_ops)(union mm_context *,
struct mm_context *mmu, void **flush,
int (*do_ops)(struct mm_context *,
struct host_vm_op *, int, int,
void **))
{
@@ -187,8 +187,8 @@ static inline int update_pmd_range(pud_t *pud, unsigned long addr,
static inline int update_pud_range(pgd_t *pgd, unsigned long addr,
unsigned long end, struct host_vm_op *ops,
int last_op, int *op_index, int force,
union mm_context *mmu, void **flush,
int (*do_ops)(union mm_context *,
struct mm_context *mmu, void **flush,
int (*do_ops)(struct mm_context *,
struct host_vm_op *, int, int,
void **))
{
@@ -216,11 +216,11 @@ static inline int update_pud_range(pgd_t *pgd, unsigned long addr,
void fix_range_common(struct mm_struct *mm, unsigned long start_addr,
unsigned long end_addr, int force,
int (*do_ops)(union mm_context *, struct host_vm_op *,
int (*do_ops)(struct mm_context *, struct host_vm_op *,
int, int, void **))
{
pgd_t *pgd;
union mm_context *mmu = &mm->context;
struct mm_context *mmu = &mm->context;
struct host_vm_op ops[1];
unsigned long addr = start_addr, next;
int ret = 0, last_op = ARRAY_SIZE(ops) - 1, op_index = -1;
@@ -375,7 +375,7 @@ void flush_tlb_page(struct vm_area_struct *vma, unsigned long address)
w = 0;
}
mm_id = &mm->context.skas.id;
mm_id = &mm->context.id;
prot = ((r ? UM_PROT_READ : 0) | (w ? UM_PROT_WRITE : 0) |
(x ? UM_PROT_EXEC : 0));
if (pte_newpage(*pte)) {
@@ -453,7 +453,7 @@ void __flush_tlb_one(unsigned long addr)
flush_tlb_kernel_range_common(addr, addr + PAGE_SIZE);
}
static int do_ops(union mm_context *mmu, struct host_vm_op *ops, int last,
static int do_ops(struct mm_context *mmu, struct host_vm_op *ops, int last,
int finished, void **flush)
{
struct host_vm_op *op;
@@ -463,17 +463,16 @@ static int do_ops(union mm_context *mmu, struct host_vm_op *ops, int last,
op = &ops[i];
switch(op->type) {
case MMAP:
ret = map(&mmu->skas.id, op->u.mmap.addr,
op->u.mmap.len, op->u.mmap.prot,
op->u.mmap.fd, op->u.mmap.offset, finished,
flush);
ret = map(&mmu->id, op->u.mmap.addr, op->u.mmap.len,
op->u.mmap.prot, op->u.mmap.fd,
op->u.mmap.offset, finished, flush);
break;
case MUNMAP:
ret = unmap(&mmu->skas.id, op->u.munmap.addr,
ret = unmap(&mmu->id, op->u.munmap.addr,
op->u.munmap.len, finished, flush);
break;
case MPROTECT:
ret = protect(&mmu->skas.id, op->u.mprotect.addr,
ret = protect(&mmu->id, op->u.mprotect.addr,
op->u.mprotect.len, op->u.mprotect.prot,
finished, flush);
break;