[Xen-devel] [PATCH 8/9] xen/mmu: use apply_to_page_range_batch() in xen_remap_domain_mfn_range()

[Jeremy Fitzhardinge <jeremy@xxxxxxxx>]

From: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>
---
 arch/x86/xen/mmu.c |   19 ++++++++++++-------
 1 files changed, 12 insertions(+), 7 deletions(-)

diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 2b2b98a..930bddc 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -2656,14 +2656,19 @@ struct remap_data {
        struct mmu_update *mmu_update;
 };
 
-static int remap_area_mfn_pte_fn(pte_t *ptep, unsigned long addr, void *data)
+static int remap_area_mfn_pte_fn(pte_t *ptep, unsigned count,
+                                unsigned long addr, void *data)
 {
        struct remap_data *rmd = data;
-       pte_t pte = pte_mkspecial(pfn_pte(rmd->mfn++, rmd->prot));
 
-       rmd->mmu_update->ptr = arbitrary_virt_to_machine(ptep).maddr;
-       rmd->mmu_update->val = pte_val_ma(pte);
-       rmd->mmu_update++;
+       while (count--) {
+               pte_t pte = pte_mkspecial(pfn_pte(rmd->mfn++, rmd->prot));
+
+               rmd->mmu_update->ptr = arbitrary_virt_to_machine(ptep).maddr;
+               rmd->mmu_update->val = pte_val_ma(pte);
+               rmd->mmu_update++;
+               ptep++;
+       }
 
        return 0;
 }
@@ -2692,8 +2697,8 @@ int xen_remap_domain_mfn_range(struct vm_area_struct *vma,
                range = (unsigned long)batch << PAGE_SHIFT;
 
                rmd.mmu_update = mmu_update;
-               err = apply_to_page_range(vma->vm_mm, addr, range,
-                                         remap_area_mfn_pte_fn, &rmd);
+               err = apply_to_page_range_batch(vma->vm_mm, addr, range,
+                                               remap_area_mfn_pte_fn, &rmd);
                if (err)
                        goto out;
 
-- 
1.7.3.3


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