[Xen-devel] [PATCH] xen: correct size of level2_kernel_pgt

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

sizeof(pmd_t *) is 4 bytes on PAE leading to an allocation of only
2048 bytes. The correct size is sizeof(pmd_t) giving us a full page
allocation.

Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
Cc: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
---

Applies to mainline since 2.6.36 and to xen.git 2.6.32 based trees

 arch/x86/xen/mmu.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index c237b81..21ed8d7 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -2126,7 +2126,7 @@ __init pgd_t *xen_setup_kernel_pagetable(pgd_t *pgd,
 {
        pmd_t *kernel_pmd;
 
-       level2_kernel_pgt = extend_brk(sizeof(pmd_t *) * PTRS_PER_PMD, 
PAGE_SIZE);
+       level2_kernel_pgt = extend_brk(sizeof(pmd_t) * PTRS_PER_PMD, PAGE_SIZE);
 
        max_pfn_mapped = PFN_DOWN(__pa(xen_start_info->pt_base) +
                                  xen_start_info->nr_pt_frames * PAGE_SIZE +
-- 
1.5.6.5


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel