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authorLinus Torvalds <torvalds@linux-foundation.org>2012-07-11 13:01:57 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-07-11 13:01:57 -0700
commit605cd83694fa175894a1c63191f1f10c449b93a8 (patch)
tree951cb8b9881d696d82e722a734a6b13bee4e924d /arch
parent5f8ebd36f7dd95ec97aec82d5907522dc54e85ba (diff)
parent9e0304e388ef0e7495b279ce737c24ad56d20b5d (diff)
Merge branch 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile
Pull arch/tile fix from Chris Metcalf: "This is a single change to fix backtracing in big-endian mode." * 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile: arch/tile: big-endian: properly bswap instruction bundles when backtracing
Diffstat (limited to 'arch')
-rw-r--r--arch/tile/kernel/backtrace.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/tile/kernel/backtrace.c b/arch/tile/kernel/backtrace.c
index 9092ce8aa6b..f8b74ca83b9 100644
--- a/arch/tile/kernel/backtrace.c
+++ b/arch/tile/kernel/backtrace.c
@@ -14,6 +14,7 @@
#include <linux/kernel.h>
#include <linux/string.h>
+#include <asm/byteorder.h>
#include <asm/backtrace.h>
#include <asm/tile-desc.h>
#include <arch/abi.h>
@@ -336,8 +337,12 @@ static void find_caller_pc_and_caller_sp(CallerLocation *location,
bytes_to_prefetch / sizeof(tile_bundle_bits);
}
- /* Decode the next bundle. */
- bundle.bits = prefetched_bundles[next_bundle++];
+ /*
+ * Decode the next bundle.
+ * TILE always stores instruction bundles in little-endian
+ * mode, even when the chip is running in big-endian mode.
+ */
+ bundle.bits = le64_to_cpu(prefetched_bundles[next_bundle++]);
bundle.num_insns =
parse_insn_tile(bundle.bits, pc, bundle.insns);
num_info_ops = bt_get_info_ops(&bundle, info_operands);