1 files changed, 2 insertions, 1 deletions

diff --git a/arch/x86/kernel/crash_dump_64.c b/arch/x86/kernel/crash_dump_64.c
index 045b36cada65..994828899e09 100644
--- a/arch/x86/kernel/crash_dump_64.c
+++ b/arch/x86/kernel/crash_dump_64.c
@@ -34,7 +34,7 @@ ssize_t copy_oldmem_page(unsigned long pfn, char *buf,
         if (!csize)
                 return 0;
 
-        vaddr = ioremap(pfn << PAGE_SHIFT, PAGE_SIZE);
+        vaddr = ioremap_cache(pfn << PAGE_SHIFT, PAGE_SIZE);
         if (!vaddr)
                 return -ENOMEM;
 
@@ -46,6 +46,7 @@ ssize_t copy_oldmem_page(unsigned long pfn, char *buf,
         } else
                 memcpy(buf, vaddr + offset, csize);
 
+        set_iounmap_nonlazy();
         iounmap(vaddr);
         return csize;
 }