diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-10-16 16:51:32 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-10-16 16:51:32 +0200 |
| commit | 5fef06e8c8c52aa7170dbbb068aa996d83738d38 (patch) | |
| tree | f46a1eefd68863bdae57afa004e5281801a6b61e /arch/x86/kernel/ldt.c | |
| parent | 0c5d1eb77a8be917b638344a22afe1398236482b (diff) | |
| parent | 278429cff8809958d25415ba0ed32b59866ab1a8 (diff) | |
Merge branch 'linus' into genirq
Diffstat (limited to 'arch/x86/kernel/ldt.c')
| -rw-r--r-- | arch/x86/kernel/ldt.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/arch/x86/kernel/ldt.c b/arch/x86/kernel/ldt.c index b68e21f06f4..eee32b43fee 100644 --- a/arch/x86/kernel/ldt.c +++ b/arch/x86/kernel/ldt.c @@ -18,6 +18,7 @@ #include <asm/ldt.h> #include <asm/desc.h> #include <asm/mmu_context.h> +#include <asm/syscalls.h> #ifdef CONFIG_SMP static void flush_ldt(void *current_mm) @@ -51,6 +52,8 @@ static int alloc_ldt(mm_context_t *pc, int mincount, int reload) memset(newldt + oldsize * LDT_ENTRY_SIZE, 0, (mincount - oldsize) * LDT_ENTRY_SIZE); + paravirt_alloc_ldt(newldt, mincount); + #ifdef CONFIG_X86_64 /* CHECKME: Do we really need this ? */ wmb(); @@ -73,6 +76,7 @@ static int alloc_ldt(mm_context_t *pc, int mincount, int reload) #endif } if (oldsize) { + paravirt_free_ldt(oldldt, oldsize); if (oldsize * LDT_ENTRY_SIZE > PAGE_SIZE) vfree(oldldt); else @@ -84,10 +88,13 @@ static int alloc_ldt(mm_context_t *pc, int mincount, int reload) static inline int copy_ldt(mm_context_t *new, mm_context_t *old) { int err = alloc_ldt(new, old->size, 0); + int i; if (err < 0) return err; - memcpy(new->ldt, old->ldt, old->size * LDT_ENTRY_SIZE); + + for(i = 0; i < old->size; i++) + write_ldt_entry(new->ldt, i, old->ldt + i * LDT_ENTRY_SIZE); return 0; } @@ -124,6 +131,7 @@ void destroy_context(struct mm_struct *mm) if (mm == current->active_mm) clear_LDT(); #endif + paravirt_free_ldt(mm->context.ldt, mm->context.size); if (mm->context.size * LDT_ENTRY_SIZE > PAGE_SIZE) vfree(mm->context.ldt); else |