diff options
| author | Will Deacon <will.deacon@arm.com> | 2014-04-23 14:47:43 +0530 |
|---|---|---|
| committer | Ishan Mittal <imittal@nvidia.com> | 2014-04-30 15:04:12 +0530 |
| commit | d93892af2daca6d7ed76c2bd080195060cfa1932 (patch) | |
| tree | 0d025b2ab3af480e61c70aeba99a051e65a2cb62 /Documentation | |
| parent | 4c182b9bf0a66a43cf87ada30fe21a61f0965ac8 (diff) | |
arm64: module: ensure instruction is little-endian before manipulation
Relocations that require an instruction immediate to be re-encoded must
ensure that the instruction pattern is represented in a little-endian
format for the manipulation code to work correctly.
This patch converts the loaded instruction into native-endianess prior
to encoding and then converts back to little-endian byteorder before
updating memory.
Change-Id: I84a8946f66e6eb303d81b7b9198d95cca6b8d42f
(cherry picked from commit 122e2fa0d310d262cb85cf0b003032e5d2bc2ae7)
Signed-off-by: Will Deacon <will.deacon@arm.com>
Tested-by: Matthew Leach <matthew.leach@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Ishan Mittal <imittal@nvidia.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/arm64/memory.txt | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/Documentation/arm64/memory.txt b/Documentation/arm64/memory.txt index 5f583af0a6e1..a776d7a7c3cc 100644 --- a/Documentation/arm64/memory.txt +++ b/Documentation/arm64/memory.txt @@ -21,7 +21,7 @@ The swapper_pgd_dir address is written to TTBR1 and never written to TTBR0. -AArch64 Linux memory layout: +AArch64 Linux memory layout with 4KB pages: Start End Size Use ----------------------------------------------------------------------- @@ -46,6 +46,31 @@ ffffffbffc000000 ffffffbfffffffff 64MB modules ffffffc000000000 ffffffffffffffff 256GB kernel logical memory map +AArch64 Linux memory layout with 64KB pages: + +Start End Size Use +----------------------------------------------------------------------- +0000000000000000 000003ffffffffff 4TB user + +fffffc0000000000 fffffdfbfffeffff ~2TB vmalloc + +fffffdfbffff0000 fffffdfbffffffff 64KB [guard page] + +fffffdfc00000000 fffffdfdffffffff 8GB vmemmap + +fffffdfe00000000 fffffdfffbbfffff ~8GB [guard, future vmmemap] + +fffffdfffbc00000 fffffdfffbdfffff 2MB earlyprintk device + +fffffdfffbe00000 fffffdfffbe0ffff 64KB PCI I/O space + +fffffdfffbe10000 fffffdfffbffffff ~2MB [guard] + +fffffdfffc000000 fffffdffffffffff 64MB modules + +fffffe0000000000 ffffffffffffffff 2TB kernel logical memory map + + Translation table lookup with 4KB pages: +--------+--------+--------+--------+--------+--------+--------+--------+ |