diff options
Diffstat (limited to 'arch/um')
| -rw-r--r-- | arch/um/include/sysdep-i386/thread.h | 2 | ||||
| -rw-r--r-- | arch/um/include/sysdep-x86_64/thread.h | 2 | ||||
| -rw-r--r-- | arch/um/include/tlb.h | 1 | ||||
| -rw-r--r-- | arch/um/kernel/mem.c | 2 | ||||
| -rw-r--r-- | arch/um/kernel/process_kern.c | 10 | ||||
| -rw-r--r-- | arch/um/kernel/skas/mmu.c | 4 | ||||
| -rw-r--r-- | arch/um/kernel/tt/tlb.c | 36 |
7 files changed, 10 insertions, 47 deletions
diff --git a/arch/um/include/sysdep-i386/thread.h b/arch/um/include/sysdep-i386/thread.h index e2bd6bae8b8..243fed44d78 100644 --- a/arch/um/include/sysdep-i386/thread.h +++ b/arch/um/include/sysdep-i386/thread.h @@ -4,7 +4,7 @@ #include <kern_constants.h> #define TASK_DEBUGREGS(task) ((unsigned long *) &(((char *) (task))[HOST_TASK_DEBUGREGS])) -#ifdef CONFIG_MODE_TT +#ifdef UML_CONFIG_MODE_TT #define TASK_EXTERN_PID(task) *((int *) &(((char *) (task))[HOST_TASK_EXTERN_PID])) #endif diff --git a/arch/um/include/sysdep-x86_64/thread.h b/arch/um/include/sysdep-x86_64/thread.h index 6a76a7f3683..cbef3e1697f 100644 --- a/arch/um/include/sysdep-x86_64/thread.h +++ b/arch/um/include/sysdep-x86_64/thread.h @@ -3,7 +3,7 @@ #include <kern_constants.h> -#ifdef CONFIG_MODE_TT +#ifdef UML_CONFIG_MODE_TT #define TASK_EXTERN_PID(task) *((int *) &(((char *) (task))[HOST_TASK_EXTERN_PID])) #endif diff --git a/arch/um/include/tlb.h b/arch/um/include/tlb.h index 45d7da6c3b2..8efc1e0f1b8 100644 --- a/arch/um/include/tlb.h +++ b/arch/um/include/tlb.h @@ -34,7 +34,6 @@ struct host_vm_op { } u; }; -extern void mprotect_kernel_vm(int w); extern void force_flush_all(void); extern void fix_range_common(struct mm_struct *mm, unsigned long start_addr, unsigned long end_addr, int force, diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c index ea008b031a8..462cc9d6538 100644 --- a/arch/um/kernel/mem.c +++ b/arch/um/kernel/mem.c @@ -252,7 +252,7 @@ void paging_init(void) #endif } -struct page *arch_validate(struct page *page, int mask, int order) +struct page *arch_validate(struct page *page, gfp_t mask, int order) { unsigned long addr, zero = 0; int i; diff --git a/arch/um/kernel/process_kern.c b/arch/um/kernel/process_kern.c index ea65db679e9..34b54a3e213 100644 --- a/arch/um/kernel/process_kern.c +++ b/arch/um/kernel/process_kern.c @@ -80,7 +80,7 @@ void free_stack(unsigned long stack, int order) unsigned long alloc_stack(int order, int atomic) { unsigned long page; - int flags = GFP_KERNEL; + gfp_t flags = GFP_KERNEL; if (atomic) flags = GFP_ATOMIC; @@ -222,6 +222,7 @@ void *um_virt_to_phys(struct task_struct *task, unsigned long addr, pud_t *pud; pmd_t *pmd; pte_t *pte; + pte_t ptent; if(task->mm == NULL) return(ERR_PTR(-EINVAL)); @@ -238,12 +239,13 @@ void *um_virt_to_phys(struct task_struct *task, unsigned long addr, return(ERR_PTR(-EINVAL)); pte = pte_offset_kernel(pmd, addr); - if(!pte_present(*pte)) + ptent = *pte; + if(!pte_present(ptent)) return(ERR_PTR(-EINVAL)); if(pte_out != NULL) - *pte_out = *pte; - return((void *) (pte_val(*pte) & PAGE_MASK) + (addr & ~PAGE_MASK)); + *pte_out = ptent; + return((void *) (pte_val(ptent) & PAGE_MASK) + (addr & ~PAGE_MASK)); } char *current_cmd(void) diff --git a/arch/um/kernel/skas/mmu.c b/arch/um/kernel/skas/mmu.c index 240143b616a..9e5e39cea82 100644 --- a/arch/um/kernel/skas/mmu.c +++ b/arch/um/kernel/skas/mmu.c @@ -28,7 +28,6 @@ static int init_stub_pte(struct mm_struct *mm, unsigned long proc, pmd_t *pmd; pte_t *pte; - spin_lock(&mm->page_table_lock); pgd = pgd_offset(mm, proc); pud = pud_alloc(mm, pgd, proc); if (!pud) @@ -63,7 +62,6 @@ static int init_stub_pte(struct mm_struct *mm, unsigned long proc, *pte = mk_pte(virt_to_page(kernel), __pgprot(_PAGE_PRESENT)); *pte = pte_mkexec(*pte); *pte = pte_wrprotect(*pte); - spin_unlock(&mm->page_table_lock); return(0); out_pmd: @@ -71,7 +69,6 @@ static int init_stub_pte(struct mm_struct *mm, unsigned long proc, out_pte: pmd_free(pmd); out: - spin_unlock(&mm->page_table_lock); return(-ENOMEM); } @@ -147,6 +144,7 @@ void destroy_context_skas(struct mm_struct *mm) if(!proc_mm || !ptrace_faultinfo){ free_page(mmu->id.stack); + pte_lock_deinit(virt_to_page(mmu->last_page_table)); pte_free_kernel((pte_t *) mmu->last_page_table); dec_page_state(nr_page_table_pages); #ifdef CONFIG_3_LEVEL_PGTABLES diff --git a/arch/um/kernel/tt/tlb.c b/arch/um/kernel/tt/tlb.c index f1d85dbb45b..ae6217c8613 100644 --- a/arch/um/kernel/tt/tlb.c +++ b/arch/um/kernel/tt/tlb.c @@ -74,42 +74,6 @@ void flush_tlb_kernel_range_tt(unsigned long start, unsigned long end) atomic_inc(&vmchange_seq); } -static void protect_vm_page(unsigned long addr, int w, int must_succeed) -{ - int err; - - err = protect_memory(addr, PAGE_SIZE, 1, w, 1, must_succeed); - if(err == 0) return; - else if((err == -EFAULT) || (err == -ENOMEM)){ - flush_tlb_kernel_range(addr, addr + PAGE_SIZE); - protect_vm_page(addr, w, 1); - } - else panic("protect_vm_page : protect failed, errno = %d\n", err); -} - -void mprotect_kernel_vm(int w) -{ - struct mm_struct *mm; - pgd_t *pgd; - pud_t *pud; - pmd_t *pmd; - pte_t *pte; - unsigned long addr; - - mm = &init_mm; - for(addr = start_vm; addr < end_vm;){ - pgd = pgd_offset(mm, addr); - pud = pud_offset(pgd, addr); - pmd = pmd_offset(pud, addr); - if(pmd_present(*pmd)){ - pte = pte_offset_kernel(pmd, addr); - if(pte_present(*pte)) protect_vm_page(addr, w, 0); - addr += PAGE_SIZE; - } - else addr += PMD_SIZE; - } -} - void flush_tlb_kernel_vm_tt(void) { flush_tlb_kernel_range(start_vm, end_vm); |