x86/paravirt/xen: properly fill out the ldt ops

[linux-2.6-omap-h63xx.git] / arch / x86 / kernel / ldt.c

diff --git a/arch/x86/kernel/ldt.c b/arch/x86/kernel/ldt.c
index 3fee2aa50f3f63d594304611090338d36f3fcc01..4895e0634d22bf83b1937777a6a15dbf4c93900d 100644 (file)
--- a/arch/x86/kernel/ldt.c
+++ b/arch/x86/kernel/ldt.c
@@ -51,6 +51,8 @@ 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();
@@ -75,6 +77,7 @@ 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
@@ -86,10 +89,13 @@ 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;
 }
 
@@ -126,6 +132,7 @@ 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