xen: pin correct PGD on suspend

[linux-2.6-omap-h63xx.git] / arch / x86 / xen / mmu.c

diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 688936044dc95cdac8d6ce79e3ee10f39e898178..636ef4caa52d3dee2a24fc3b1913fe23b8ab34db 100644 (file)
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -661,12 +661,11 @@ void xen_set_pgd(pgd_t *ptr, pgd_t val)
  * For 64-bit, we must skip the Xen hole in the middle of the address
  * space, just after the big x86-64 virtual hole.
  */
-static int xen_pgd_walk(struct mm_struct *mm,
-                       int (*func)(struct mm_struct *mm, struct page *,
-                                   enum pt_level),
-                       unsigned long limit)
+static int __xen_pgd_walk(struct mm_struct *mm, pgd_t *pgd,
+                         int (*func)(struct mm_struct *mm, struct page *,
+                                     enum pt_level),
+                         unsigned long limit)
 {
-       pgd_t *pgd = mm->pgd;
        int flush = 0;
        unsigned hole_low, hole_high;
        unsigned pgdidx_limit, pudidx_limit, pmdidx_limit;
@@ -753,6 +752,14 @@ out:
        return flush;
 }
 
+static int xen_pgd_walk(struct mm_struct *mm,
+                       int (*func)(struct mm_struct *mm, struct page *,
+                                   enum pt_level),
+                       unsigned long limit)
+{
+       return __xen_pgd_walk(mm, mm->pgd, func, limit);
+}
+
 /* If we're using split pte locks, then take the page's lock and
    return a pointer to it.  Otherwise return NULL. */
 static spinlock_t *xen_pte_lock(struct page *page, struct mm_struct *mm)
@@ -854,7 +861,7 @@ static void __xen_pgd_pin(struct mm_struct *mm, pgd_t *pgd)
 
        xen_mc_batch();
 
-        if (xen_pgd_walk(mm, xen_pin_page, USER_LIMIT)) {
+       if (__xen_pgd_walk(mm, pgd, xen_pin_page, USER_LIMIT)) {
                /* re-enable interrupts for flushing */
                xen_mc_issue(0);
 
@@ -998,7 +1005,7 @@ static void __xen_pgd_unpin(struct mm_struct *mm, pgd_t *pgd)
                       PT_PMD);
 #endif
 
-       xen_pgd_walk(mm, xen_unpin_page, USER_LIMIT);
+       __xen_pgd_walk(mm, pgd, xen_unpin_page, USER_LIMIT);
 
        xen_mc_issue(0);
 }