-/*
- * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
+/*
+ * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
* Licensed under the GPL
*/
#include "linux/mm.h"
-#include "asm/page.h"
-#include "asm/pgalloc.h"
+#include "asm/pgtable.h"
#include "asm/tlbflush.h"
-#include "choose-mode.h"
-#include "mode_kern.h"
-#include "user_util.h"
-#include "tlb.h"
-#include "mem.h"
+#include "as-layout.h"
#include "mem_user.h"
#include "os.h"
+#include "skas.h"
+#include "tlb.h"
-#define ADD_ROUND(n, inc) (((n) + (inc)) & ~((inc) - 1))
+struct host_vm_change {
+ struct host_vm_op {
+ enum { NONE, MMAP, MUNMAP, MPROTECT } type;
+ union {
+ struct {
+ unsigned long addr;
+ unsigned long len;
+ unsigned int prot;
+ int fd;
+ __u64 offset;
+ } mmap;
+ struct {
+ unsigned long addr;
+ unsigned long len;
+ } munmap;
+ struct {
+ unsigned long addr;
+ unsigned long len;
+ unsigned int prot;
+ } mprotect;
+ } u;
+ } ops[1];
+ int index;
+ struct mm_id *id;
+ void *data;
+ int force;
+};
+
+#define INIT_HVC(mm, force) \
+ ((struct host_vm_change) \
+ { .ops = { { .type = NONE } }, \
+ .id = &mm->context.id, \
+ .data = NULL, \
+ .index = 0, \
+ .force = force })
+
+static int do_ops(struct host_vm_change *hvc, int end,
+ int finished)
+{
+ struct host_vm_op *op;
+ int i, ret = 0;
+
+ for (i = 0; i < end && !ret; i++) {
+ op = &hvc->ops[i];
+ switch(op->type) {
+ case MMAP:
+ ret = map(hvc->id, op->u.mmap.addr, op->u.mmap.len,
+ op->u.mmap.prot, op->u.mmap.fd,
+ op->u.mmap.offset, finished, &hvc->data);
+ break;
+ case MUNMAP:
+ ret = unmap(hvc->id, op->u.munmap.addr,
+ op->u.munmap.len, finished, &hvc->data);
+ break;
+ case MPROTECT:
+ ret = protect(hvc->id, op->u.mprotect.addr,
+ op->u.mprotect.len, op->u.mprotect.prot,
+ finished, &hvc->data);
+ break;
+ default:
+ printk(KERN_ERR "Unknown op type %d in do_ops\n",
+ op->type);
+ break;
+ }
+ }
-void fix_range_common(struct mm_struct *mm, unsigned long start_addr,
- unsigned long end_addr, int force,
- void (*do_ops)(union mm_context *, struct host_vm_op *,
- int))
+ return ret;
+}
+
+static int add_mmap(unsigned long virt, unsigned long phys, unsigned long len,
+ unsigned int prot, struct host_vm_change *hvc)
{
- pgd_t *npgd;
- pud_t *npud;
- pmd_t *npmd;
- pte_t *npte;
- union mm_context *mmu = &mm->context;
- unsigned long addr, end;
- int r, w, x;
- struct host_vm_op ops[16];
- int op_index = -1, last_op = sizeof(ops) / sizeof(ops[0]) - 1;
-
- if(mm == NULL) return;
-
- for(addr = start_addr; addr < end_addr;){
- npgd = pgd_offset(mm, addr);
- if(!pgd_present(*npgd)){
- end = ADD_ROUND(addr, PGDIR_SIZE);
- if(end > end_addr)
- end = end_addr;
- if(force || pgd_newpage(*npgd)){
- op_index = add_munmap(addr, end - addr, ops,
- op_index, last_op, mmu,
- do_ops);
- pgd_mkuptodate(*npgd);
- }
- addr = end;
- continue;
- }
-
- npud = pud_offset(npgd, addr);
- if(!pud_present(*npud)){
- end = ADD_ROUND(addr, PUD_SIZE);
- if(end > end_addr)
- end = end_addr;
- if(force || pud_newpage(*npud)){
- op_index = add_munmap(addr, end - addr, ops,
- op_index, last_op, mmu,
- do_ops);
- pud_mkuptodate(*npud);
- }
- addr = end;
- continue;
- }
-
- npmd = pmd_offset(npud, addr);
- if(!pmd_present(*npmd)){
- end = ADD_ROUND(addr, PMD_SIZE);
- if(end > end_addr)
- end = end_addr;
- if(force || pmd_newpage(*npmd)){
- op_index = add_munmap(addr, end - addr, ops,
- op_index, last_op, mmu,
- do_ops);
- pmd_mkuptodate(*npmd);
- }
- addr = end;
- continue;
- }
-
- npte = pte_offset_kernel(npmd, addr);
- r = pte_read(*npte);
- w = pte_write(*npte);
- x = pte_exec(*npte);
- if(!pte_dirty(*npte))
- w = 0;
- if(!pte_young(*npte)){
- r = 0;
- w = 0;
- }
- if(force || pte_newpage(*npte)){
- if(pte_present(*npte))
- op_index = add_mmap(addr,
- pte_val(*npte) & PAGE_MASK,
- PAGE_SIZE, r, w, x, ops,
- op_index, last_op, mmu,
- do_ops);
- else op_index = add_munmap(addr, PAGE_SIZE, ops,
- op_index, last_op, mmu,
- do_ops);
- }
- else if(pte_newprot(*npte))
- op_index = add_mprotect(addr, PAGE_SIZE, r, w, x, ops,
- op_index, last_op, mmu,
- do_ops);
-
- *npte = pte_mkuptodate(*npte);
- addr += PAGE_SIZE;
- }
- (*do_ops)(mmu, ops, op_index);
+ __u64 offset;
+ struct host_vm_op *last;
+ int fd, ret = 0;
+
+ fd = phys_mapping(phys, &offset);
+ if (hvc->index != 0) {
+ last = &hvc->ops[hvc->index - 1];
+ if ((last->type == MMAP) &&
+ (last->u.mmap.addr + last->u.mmap.len == virt) &&
+ (last->u.mmap.prot == prot) && (last->u.mmap.fd == fd) &&
+ (last->u.mmap.offset + last->u.mmap.len == offset)) {
+ last->u.mmap.len += len;
+ return 0;
+ }
+ }
+
+ if (hvc->index == ARRAY_SIZE(hvc->ops)) {
+ ret = do_ops(hvc, ARRAY_SIZE(hvc->ops), 0);
+ hvc->index = 0;
+ }
+
+ hvc->ops[hvc->index++] = ((struct host_vm_op)
+ { .type = MMAP,
+ .u = { .mmap = { .addr = virt,
+ .len = len,
+ .prot = prot,
+ .fd = fd,
+ .offset = offset }
+ } });
+ return ret;
}
-int flush_tlb_kernel_range_common(unsigned long start, unsigned long end)
+static int add_munmap(unsigned long addr, unsigned long len,
+ struct host_vm_change *hvc)
{
- struct mm_struct *mm;
- pgd_t *pgd;
- pud_t *pud;
- pmd_t *pmd;
- pte_t *pte;
- unsigned long addr, last;
- int updated = 0, err;
-
- mm = &init_mm;
- for(addr = start; addr < end;){
- pgd = pgd_offset(mm, addr);
- if(!pgd_present(*pgd)){
- last = ADD_ROUND(addr, PGDIR_SIZE);
- if(last > end)
- last = end;
- if(pgd_newpage(*pgd)){
- updated = 1;
- err = os_unmap_memory((void *) addr,
- last - addr);
- if(err < 0)
- panic("munmap failed, errno = %d\n",
- -err);
- }
- addr = last;
- continue;
- }
-
- pud = pud_offset(pgd, addr);
- if(!pud_present(*pud)){
- last = ADD_ROUND(addr, PUD_SIZE);
- if(last > end)
- last = end;
- if(pud_newpage(*pud)){
- updated = 1;
- err = os_unmap_memory((void *) addr,
- last - addr);
- if(err < 0)
- panic("munmap failed, errno = %d\n",
- -err);
- }
- addr = last;
- continue;
- }
-
- pmd = pmd_offset(pud, addr);
- if(!pmd_present(*pmd)){
- last = ADD_ROUND(addr, PMD_SIZE);
- if(last > end)
- last = end;
- if(pmd_newpage(*pmd)){
- updated = 1;
- err = os_unmap_memory((void *) addr,
- last - addr);
- if(err < 0)
- panic("munmap failed, errno = %d\n",
- -err);
- }
- addr = last;
- continue;
- }
-
- pte = pte_offset_kernel(pmd, addr);
- if(!pte_present(*pte) || pte_newpage(*pte)){
- updated = 1;
- err = os_unmap_memory((void *) addr,
- PAGE_SIZE);
- if(err < 0)
- panic("munmap failed, errno = %d\n",
- -err);
- if(pte_present(*pte))
- map_memory(addr,
- pte_val(*pte) & PAGE_MASK,
- PAGE_SIZE, 1, 1, 1);
- }
- else if(pte_newprot(*pte)){
- updated = 1;
- protect_memory(addr, PAGE_SIZE, 1, 1, 1, 1);
- }
- addr += PAGE_SIZE;
- }
- return(updated);
+ struct host_vm_op *last;
+ int ret = 0;
+
+ if (hvc->index != 0) {
+ last = &hvc->ops[hvc->index - 1];
+ if ((last->type == MUNMAP) &&
+ (last->u.munmap.addr + last->u.mmap.len == addr)) {
+ last->u.munmap.len += len;
+ return 0;
+ }
+ }
+
+ if (hvc->index == ARRAY_SIZE(hvc->ops)) {
+ ret = do_ops(hvc, ARRAY_SIZE(hvc->ops), 0);
+ hvc->index = 0;
+ }
+
+ hvc->ops[hvc->index++] = ((struct host_vm_op)
+ { .type = MUNMAP,
+ .u = { .munmap = { .addr = addr,
+ .len = len } } });
+ return ret;
}
-pgd_t *pgd_offset_proc(struct mm_struct *mm, unsigned long address)
+static int add_mprotect(unsigned long addr, unsigned long len,
+ unsigned int prot, struct host_vm_change *hvc)
{
- return(pgd_offset(mm, address));
+ struct host_vm_op *last;
+ int ret = 0;
+
+ if (hvc->index != 0) {
+ last = &hvc->ops[hvc->index - 1];
+ if ((last->type == MPROTECT) &&
+ (last->u.mprotect.addr + last->u.mprotect.len == addr) &&
+ (last->u.mprotect.prot == prot)) {
+ last->u.mprotect.len += len;
+ return 0;
+ }
+ }
+
+ if (hvc->index == ARRAY_SIZE(hvc->ops)) {
+ ret = do_ops(hvc, ARRAY_SIZE(hvc->ops), 0);
+ hvc->index = 0;
+ }
+
+ hvc->ops[hvc->index++] = ((struct host_vm_op)
+ { .type = MPROTECT,
+ .u = { .mprotect = { .addr = addr,
+ .len = len,
+ .prot = prot } } });
+ return ret;
}
-pud_t *pud_offset_proc(pgd_t *pgd, unsigned long address)
+#define ADD_ROUND(n, inc) (((n) + (inc)) & ~((inc) - 1))
+
+static inline int update_pte_range(pmd_t *pmd, unsigned long addr,
+ unsigned long end,
+ struct host_vm_change *hvc)
{
- return(pud_offset(pgd, address));
+ pte_t *pte;
+ int r, w, x, prot, ret = 0;
+
+ pte = pte_offset_kernel(pmd, addr);
+ do {
+ r = pte_read(*pte);
+ w = pte_write(*pte);
+ x = pte_exec(*pte);
+ if (!pte_young(*pte)) {
+ r = 0;
+ w = 0;
+ } else if (!pte_dirty(*pte)) {
+ w = 0;
+ }
+ prot = ((r ? UM_PROT_READ : 0) | (w ? UM_PROT_WRITE : 0) |
+ (x ? UM_PROT_EXEC : 0));
+ if (hvc->force || pte_newpage(*pte)) {
+ if (pte_present(*pte))
+ ret = add_mmap(addr, pte_val(*pte) & PAGE_MASK,
+ PAGE_SIZE, prot, hvc);
+ else ret = add_munmap(addr, PAGE_SIZE, hvc);
+ }
+ else if (pte_newprot(*pte))
+ ret = add_mprotect(addr, PAGE_SIZE, prot, hvc);
+ *pte = pte_mkuptodate(*pte);
+ } while (pte++, addr += PAGE_SIZE, ((addr != end) && !ret));
+ return ret;
}
-pmd_t *pmd_offset_proc(pud_t *pud, unsigned long address)
+static inline int update_pmd_range(pud_t *pud, unsigned long addr,
+ unsigned long end,
+ struct host_vm_change *hvc)
{
- return(pmd_offset(pud, address));
+ pmd_t *pmd;
+ unsigned long next;
+ int ret = 0;
+
+ pmd = pmd_offset(pud, addr);
+ do {
+ next = pmd_addr_end(addr, end);
+ if (!pmd_present(*pmd)) {
+ if (hvc->force || pmd_newpage(*pmd)) {
+ ret = add_munmap(addr, next - addr, hvc);
+ pmd_mkuptodate(*pmd);
+ }
+ }
+ else ret = update_pte_range(pmd, addr, next, hvc);
+ } while (pmd++, addr = next, ((addr != end) && !ret));
+ return ret;
}
-pte_t *pte_offset_proc(pmd_t *pmd, unsigned long address)
+static inline int update_pud_range(pgd_t *pgd, unsigned long addr,
+ unsigned long end,
+ struct host_vm_change *hvc)
{
- return(pte_offset_kernel(pmd, address));
+ pud_t *pud;
+ unsigned long next;
+ int ret = 0;
+
+ pud = pud_offset(pgd, addr);
+ do {
+ next = pud_addr_end(addr, end);
+ if (!pud_present(*pud)) {
+ if (hvc->force || pud_newpage(*pud)) {
+ ret = add_munmap(addr, next - addr, hvc);
+ pud_mkuptodate(*pud);
+ }
+ }
+ else ret = update_pmd_range(pud, addr, next, hvc);
+ } while (pud++, addr = next, ((addr != end) && !ret));
+ return ret;
}
-pte_t *addr_pte(struct task_struct *task, unsigned long addr)
+void fix_range_common(struct mm_struct *mm, unsigned long start_addr,
+ unsigned long end_addr, int force)
{
- pgd_t *pgd = pgd_offset(task->mm, addr);
- pud_t *pud = pud_offset(pgd, addr);
- pmd_t *pmd = pmd_offset(pud, addr);
+ pgd_t *pgd;
+ struct host_vm_change hvc;
+ unsigned long addr = start_addr, next;
+ int ret = 0;
+
+ hvc = INIT_HVC(mm, force);
+ pgd = pgd_offset(mm, addr);
+ do {
+ next = pgd_addr_end(addr, end_addr);
+ if (!pgd_present(*pgd)) {
+ if (force || pgd_newpage(*pgd)) {
+ ret = add_munmap(addr, next - addr, &hvc);
+ pgd_mkuptodate(*pgd);
+ }
+ }
+ else ret = update_pud_range(pgd, addr, next, &hvc);
+ } while (pgd++, addr = next, ((addr != end_addr) && !ret));
- return(pte_offset_map(pmd, addr));
+ if (!ret)
+ ret = do_ops(&hvc, hvc.index, 1);
+
+ /* This is not an else because ret is modified above */
+ if (ret) {
+ printk(KERN_ERR "fix_range_common: failed, killing current "
+ "process\n");
+ force_sig(SIGKILL, current);
+ }
}
-int add_mmap(unsigned long virt, unsigned long phys, unsigned long len,
- int r, int w, int x, struct host_vm_op *ops, int index,
- int last_filled, union mm_context *mmu,
- void (*do_ops)(union mm_context *, struct host_vm_op *, int))
+int flush_tlb_kernel_range_common(unsigned long start, unsigned long end)
{
- __u64 offset;
- struct host_vm_op *last;
- int fd;
+ struct mm_struct *mm;
+ pgd_t *pgd;
+ pud_t *pud;
+ pmd_t *pmd;
+ pte_t *pte;
+ unsigned long addr, last;
+ int updated = 0, err;
+
+ mm = &init_mm;
+ for (addr = start; addr < end;) {
+ pgd = pgd_offset(mm, addr);
+ if (!pgd_present(*pgd)) {
+ last = ADD_ROUND(addr, PGDIR_SIZE);
+ if (last > end)
+ last = end;
+ if (pgd_newpage(*pgd)) {
+ updated = 1;
+ err = os_unmap_memory((void *) addr,
+ last - addr);
+ if (err < 0)
+ panic("munmap failed, errno = %d\n",
+ -err);
+ }
+ addr = last;
+ continue;
+ }
- fd = phys_mapping(phys, &offset);
- if(index != -1){
- last = &ops[index];
- if((last->type == MMAP) &&
- (last->u.mmap.addr + last->u.mmap.len == virt) &&
- (last->u.mmap.r == r) && (last->u.mmap.w == w) &&
- (last->u.mmap.x == x) && (last->u.mmap.fd == fd) &&
- (last->u.mmap.offset + last->u.mmap.len == offset)){
- last->u.mmap.len += len;
- return(index);
+ pud = pud_offset(pgd, addr);
+ if (!pud_present(*pud)) {
+ last = ADD_ROUND(addr, PUD_SIZE);
+ if (last > end)
+ last = end;
+ if (pud_newpage(*pud)) {
+ updated = 1;
+ err = os_unmap_memory((void *) addr,
+ last - addr);
+ if (err < 0)
+ panic("munmap failed, errno = %d\n",
+ -err);
+ }
+ addr = last;
+ continue;
}
- }
- if(index == last_filled){
- (*do_ops)(mmu, ops, last_filled);
- index = -1;
- }
+ pmd = pmd_offset(pud, addr);
+ if (!pmd_present(*pmd)) {
+ last = ADD_ROUND(addr, PMD_SIZE);
+ if (last > end)
+ last = end;
+ if (pmd_newpage(*pmd)) {
+ updated = 1;
+ err = os_unmap_memory((void *) addr,
+ last - addr);
+ if (err < 0)
+ panic("munmap failed, errno = %d\n",
+ -err);
+ }
+ addr = last;
+ continue;
+ }
- ops[++index] = ((struct host_vm_op) { .type = MMAP,
- .u = { .mmap = {
- .addr = virt,
- .len = len,
- .r = r,
- .w = w,
- .x = x,
- .fd = fd,
- .offset = offset }
- } });
- return(index);
+ pte = pte_offset_kernel(pmd, addr);
+ if (!pte_present(*pte) || pte_newpage(*pte)) {
+ updated = 1;
+ err = os_unmap_memory((void *) addr,
+ PAGE_SIZE);
+ if (err < 0)
+ panic("munmap failed, errno = %d\n",
+ -err);
+ if (pte_present(*pte))
+ map_memory(addr,
+ pte_val(*pte) & PAGE_MASK,
+ PAGE_SIZE, 1, 1, 1);
+ }
+ else if (pte_newprot(*pte)) {
+ updated = 1;
+ os_protect_memory((void *) addr, PAGE_SIZE, 1, 1, 1);
+ }
+ addr += PAGE_SIZE;
+ }
+ return updated;
}
-int add_munmap(unsigned long addr, unsigned long len, struct host_vm_op *ops,
- int index, int last_filled, union mm_context *mmu,
- void (*do_ops)(union mm_context *, struct host_vm_op *, int))
+void flush_tlb_page(struct vm_area_struct *vma, unsigned long address)
{
- struct host_vm_op *last;
+ pgd_t *pgd;
+ pud_t *pud;
+ pmd_t *pmd;
+ pte_t *pte;
+ struct mm_struct *mm = vma->vm_mm;
+ void *flush = NULL;
+ int r, w, x, prot, err = 0;
+ struct mm_id *mm_id;
+
+ address &= PAGE_MASK;
+ pgd = pgd_offset(mm, address);
+ if (!pgd_present(*pgd))
+ goto kill;
+
+ pud = pud_offset(pgd, address);
+ if (!pud_present(*pud))
+ goto kill;
+
+ pmd = pmd_offset(pud, address);
+ if (!pmd_present(*pmd))
+ goto kill;
+
+ pte = pte_offset_kernel(pmd, address);
+
+ r = pte_read(*pte);
+ w = pte_write(*pte);
+ x = pte_exec(*pte);
+ if (!pte_young(*pte)) {
+ r = 0;
+ w = 0;
+ } else if (!pte_dirty(*pte)) {
+ w = 0;
+ }
- if(index != -1){
- last = &ops[index];
- if((last->type == MUNMAP) &&
- (last->u.munmap.addr + last->u.mmap.len == addr)){
- last->u.munmap.len += len;
- return(index);
+ 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)) {
+ if (pte_present(*pte)) {
+ unsigned long long offset;
+ int fd;
+
+ fd = phys_mapping(pte_val(*pte) & PAGE_MASK, &offset);
+ err = map(mm_id, address, PAGE_SIZE, prot, fd, offset,
+ 1, &flush);
}
+ else err = unmap(mm_id, address, PAGE_SIZE, 1, &flush);
}
+ else if (pte_newprot(*pte))
+ err = protect(mm_id, address, PAGE_SIZE, prot, 1, &flush);
- if(index == last_filled){
- (*do_ops)(mmu, ops, last_filled);
- index = -1;
- }
+ if (err)
+ goto kill;
- ops[++index] = ((struct host_vm_op) { .type = MUNMAP,
- .u = { .munmap = {
- .addr = addr,
- .len = len } } });
- return(index);
+ *pte = pte_mkuptodate(*pte);
+
+ return;
+
+kill:
+ printk(KERN_ERR "Failed to flush page for address 0x%lx\n", address);
+ force_sig(SIGKILL, current);
}
-int add_mprotect(unsigned long addr, unsigned long len, int r, int w, int x,
- struct host_vm_op *ops, int index, int last_filled,
- union mm_context *mmu,
- void (*do_ops)(union mm_context *, struct host_vm_op *, int))
+pgd_t *pgd_offset_proc(struct mm_struct *mm, unsigned long address)
{
- struct host_vm_op *last;
+ return pgd_offset(mm, address);
+}
- if(index != -1){
- last = &ops[index];
- if((last->type == MPROTECT) &&
- (last->u.mprotect.addr + last->u.mprotect.len == addr) &&
- (last->u.mprotect.r == r) && (last->u.mprotect.w == w) &&
- (last->u.mprotect.x == x)){
- last->u.mprotect.len += len;
- return(index);
- }
- }
+pud_t *pud_offset_proc(pgd_t *pgd, unsigned long address)
+{
+ return pud_offset(pgd, address);
+}
- if(index == last_filled){
- (*do_ops)(mmu, ops, last_filled);
- index = -1;
- }
+pmd_t *pmd_offset_proc(pud_t *pud, unsigned long address)
+{
+ return pmd_offset(pud, address);
+}
- ops[++index] = ((struct host_vm_op) { .type = MPROTECT,
- .u = { .mprotect = {
- .addr = addr,
- .len = len,
- .r = r,
- .w = w,
- .x = x } } });
- return(index);
+pte_t *pte_offset_proc(pmd_t *pmd, unsigned long address)
+{
+ return pte_offset_kernel(pmd, address);
}
-void flush_tlb_page(struct vm_area_struct *vma, unsigned long address)
+pte_t *addr_pte(struct task_struct *task, unsigned long addr)
{
- address &= PAGE_MASK;
- flush_tlb_range(vma, address, address + PAGE_SIZE);
+ pgd_t *pgd = pgd_offset(task->mm, addr);
+ pud_t *pud = pud_offset(pgd, addr);
+ pmd_t *pmd = pmd_offset(pud, addr);
+
+ return pte_offset_map(pmd, addr);
}
void flush_tlb_all(void)
{
- flush_tlb_mm(current->mm);
+ flush_tlb_mm(current->mm);
}
void flush_tlb_kernel_range(unsigned long start, unsigned long end)
{
- CHOOSE_MODE_PROC(flush_tlb_kernel_range_tt,
- flush_tlb_kernel_range_common, start, end);
+ flush_tlb_kernel_range_common(start, end);
}
void flush_tlb_kernel_vm(void)
{
- CHOOSE_MODE(flush_tlb_kernel_vm_tt(),
- flush_tlb_kernel_range_common(start_vm, end_vm));
+ flush_tlb_kernel_range_common(start_vm, end_vm);
}
void __flush_tlb_one(unsigned long addr)
{
- CHOOSE_MODE_PROC(__flush_tlb_one_tt, __flush_tlb_one_skas, addr);
+ flush_tlb_kernel_range_common(addr, addr + PAGE_SIZE);
+}
+
+static void fix_range(struct mm_struct *mm, unsigned long start_addr,
+ unsigned long end_addr, int force)
+{
+ if (!proc_mm && (end_addr > STUB_START))
+ end_addr = STUB_START;
+
+ fix_range_common(mm, start_addr, end_addr, force);
}
void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
unsigned long end)
{
- CHOOSE_MODE_PROC(flush_tlb_range_tt, flush_tlb_range_skas, vma, start,
- end);
+ if (vma->vm_mm == NULL)
+ flush_tlb_kernel_range_common(start, end);
+ else fix_range(vma->vm_mm, start, end, 0);
}
void flush_tlb_mm(struct mm_struct *mm)
{
- CHOOSE_MODE_PROC(flush_tlb_mm_tt, flush_tlb_mm_skas, mm);
+ unsigned long end;
+
+ /*
+ * Don't bother flushing if this address space is about to be
+ * destroyed.
+ */
+ if (atomic_read(&mm->mm_users) == 0)
+ return;
+
+ end = proc_mm ? task_size : STUB_START;
+ fix_range(mm, 0, end, 0);
}
void force_flush_all(void)
{
- CHOOSE_MODE(force_flush_all_tt(), force_flush_all_skas());
-}
+ struct mm_struct *mm = current->mm;
+ struct vm_area_struct *vma = mm->mmap;
+ while (vma != NULL) {
+ fix_range(mm, vma->vm_start, vma->vm_end, 1);
+ vma = vma->vm_next;
+ }
+}
git.openpandora.org / pandora-kernel.git / blobdiff