diff options
Diffstat (limited to 'arch/x86/xen/mmu_hvm.c')
| -rw-r--r-- | arch/x86/xen/mmu_hvm.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/arch/x86/xen/mmu_hvm.c b/arch/x86/xen/mmu_hvm.c index 6ba8826dcdcc..509bdee3ab90 100644 --- 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 } |