Merge remote-tracking branch 'lsk/v3.10/topic/arm64-insn' into linux-linaro-lsk

[firefly-linux-kernel-4.4.55.git] / arch / powerpc / kernel / crash_dump.c

diff --git a/arch/powerpc/kernel/crash_dump.c b/arch/powerpc/kernel/crash_dump.c
index 9ec3fe174cba7c0ec859bcbb665aeba2b1cc1cb7..555ae67e4086c12a7da46b06356c0ab65e65b19a 100644 (file)
--- a/arch/powerpc/kernel/crash_dump.c
+++ b/arch/powerpc/kernel/crash_dump.c
@@ -108,17 +108,19 @@ ssize_t copy_oldmem_page(unsigned long pfn, char *buf,
                        size_t csize, unsigned long offset, int userbuf)
 {
        void  *vaddr;
+       phys_addr_t paddr;
 
        if (!csize)
                return 0;
 
        csize = min_t(size_t, csize, PAGE_SIZE);
+       paddr = pfn << PAGE_SHIFT;
 
-       if ((min_low_pfn < pfn) && (pfn < max_pfn)) {
-               vaddr = __va(pfn << PAGE_SHIFT);
+       if (memblock_is_region_memory(paddr, csize)) {
+               vaddr = __va(paddr);
                csize = copy_oldmem_vaddr(vaddr, buf, csize, offset, userbuf);
        } else {
-               vaddr = __ioremap(pfn << PAGE_SHIFT, PAGE_SIZE, 0);
+               vaddr = __ioremap(paddr, PAGE_SIZE, 0);
                csize = copy_oldmem_vaddr(vaddr, buf, csize, offset, userbuf);
                iounmap(vaddr);
        }