Merge branch 'ras-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...

[karo-tx-linux.git] / arch / x86 / kernel / setup.c

diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 3a896109e1dff3930fa069738ba5a5225f5102d9..a1e4da98c8f0db8c838766e9466c2608c124fe98 100644 (file)
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -1085,8 +1085,10 @@ void __init setup_arch(char **cmdline_p)
        memblock_set_current_limit(ISA_END_ADDRESS);
        memblock_x86_fill();
 
-       if (efi_enabled(EFI_BOOT))
+       if (efi_enabled(EFI_BOOT)) {
+               efi_fake_memmap();
                efi_find_mirror();
+       }
 
        /*
         * The EFI specification says that boot service code won't be called
@@ -1179,6 +1181,14 @@ void __init setup_arch(char **cmdline_p)
        clone_pgd_range(initial_page_table + KERNEL_PGD_BOUNDARY,
                        swapper_pg_dir     + KERNEL_PGD_BOUNDARY,
                        KERNEL_PGD_PTRS);
+
+       /*
+        * sync back low identity map too.  It is used for example
+        * in the 32-bit EFI stub.
+        */
+       clone_pgd_range(initial_page_table,
+                       swapper_pg_dir     + KERNEL_PGD_BOUNDARY,
+                       KERNEL_PGD_PTRS);
 #endif
 
        tboot_probe();