proc/vmcore: convert oldmem_pfn_is_ram callback to more generic vmcore callbacks

[linux-2.6-microblaze.git] / arch / x86 / xen / mmu_hvm.c

diff --git a/arch/x86/xen/mmu_hvm.c b/arch/x86/xen/mmu_hvm.c
index 6ba8826..509bdee 100644 (file)
--- a/arch/x86/xen/mmu_hvm.c
+++ b/arch/x86/xen/mmu_hvm.c
@@ -12,10 +12,10 @@
  * The kdump kernel has to check whether a pfn of the crashed kernel
  * was a ballooned page. vmcore is using this function to decide
  * whether to access a pfn of the crashed kernel.
- * Returns 0 if the pfn is not backed by a RAM page, the caller may
+ * Returns "false" if the pfn is not backed by a RAM page, the caller may
  * handle the pfn special in this case.
  */
-static int xen_oldmem_pfn_is_ram(unsigned long pfn)
+static bool xen_vmcore_pfn_is_ram(struct vmcore_cb *cb, unsigned long pfn)
 {
        struct xen_hvm_get_mem_type a = {
                .domid = DOMID_SELF,
@@ -24,10 +24,13 @@ static int xen_oldmem_pfn_is_ram(unsigned long pfn)
 
        if (HYPERVISOR_hvm_op(HVMOP_get_mem_type, &a)) {
                pr_warn_once("Unexpected HVMOP_get_mem_type failure\n");
-               return -ENXIO;
+               return true;
        }
        return a.mem_type != HVMMEM_mmio_dm;
 }
+static struct vmcore_cb xen_vmcore_cb = {
+       .pfn_is_ram = xen_vmcore_pfn_is_ram,
+};
 #endif
 
 static void xen_hvm_exit_mmap(struct mm_struct *mm)
@@ -61,6 +64,6 @@ void __init xen_hvm_init_mmu_ops(void)
        if (is_pagetable_dying_supported())
                pv_ops.mmu.exit_mmap = xen_hvm_exit_mmap;
 #ifdef CONFIG_PROC_VMCORE
-       WARN_ON(register_oldmem_pfn_is_ram(&xen_oldmem_pfn_is_ram));
+       register_vmcore_cb(&xen_vmcore_cb);
 #endif
 }