Merge tag 'char-misc-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...

[cascardo/linux.git] / arch / arm64 / kernel / vmlinux.lds.S

diff --git a/arch/arm64/kernel/vmlinux.lds.S b/arch/arm64/kernel/vmlinux.lds.S
index 89d6e17..5ce9b29 100644 (file)
--- a/arch/arm64/kernel/vmlinux.lds.S
+++ b/arch/arm64/kernel/vmlinux.lds.S
@@ -103,6 +103,7 @@ SECTIONS
                *(.discard)
                *(.discard.*)
                *(.interp .dynamic)
+               *(.dynsym .dynstr .hash)
        }
 
        . = KIMAGE_VADDR + TEXT_OFFSET;
@@ -174,19 +175,9 @@ SECTIONS
        .rela : ALIGN(8) {
                *(.rela .rela*)
        }
-       .dynsym : ALIGN(8) {
-               *(.dynsym)
-       }
-       .dynstr : {
-               *(.dynstr)
-       }
-       .hash : {
-               *(.hash)
-       }
 
-       __rela_offset   = ADDR(.rela) - KIMAGE_VADDR;
+       __rela_offset   = ABSOLUTE(ADDR(.rela) - KIMAGE_VADDR);
        __rela_size     = SIZEOF(.rela);
-       __dynsym_offset = ADDR(.dynsym) - KIMAGE_VADDR;
 
        . = ALIGN(SEGMENT_ALIGN);
        __init_end = .;
@@ -194,6 +185,25 @@ SECTIONS
        _data = .;
        _sdata = .;
        RW_DATA_SECTION(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
+
+       /*
+        * Data written with the MMU off but read with the MMU on requires
+        * cache lines to be invalidated, discarding up to a Cache Writeback
+        * Granule (CWG) of data from the cache. Keep the section that
+        * requires this type of maintenance to be in its own Cache Writeback
+        * Granule (CWG) area so the cache maintenance operations don't
+        * interfere with adjacent data.
+        */
+       .mmuoff.data.write : ALIGN(SZ_2K) {
+               __mmuoff_data_start = .;
+               *(.mmuoff.data.write)
+       }
+       . = ALIGN(SZ_2K);
+       .mmuoff.data.read : {
+               *(.mmuoff.data.read)
+               __mmuoff_data_end = .;
+       }
+
        PECOFF_EDATA_PADDING
        _edata = .;