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authorLinus Torvalds <torvalds@linux-foundation.org>2013-09-06 11:09:44 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-09-06 11:09:44 -0700
commit576c25eb5954035b64112188d9a2683144600f3d (patch)
tree7cef36c33078f18dcfb5614674044c4c10df8a0c /arch/arm64/kernel/entry.S
parent5872c84027fdcc982e8109ca26d11e1117995745 (diff)
parent4d5e0b1527dd330940e8b7180b8d7016fc900352 (diff)
Merge tag 'arm64-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64
Pull ARM64 update from Catalin Marinas: - User tagged pointers support (top 8-bit of user pointers automatically ignored by the CPU). - Kernel mode NEON (no users for arm64 yet but work in progress). - arm64 kernel Image header extended to accommodate future EFI stub. - Remove BogoMIPS reporting (not relevant, it's just the timer frequency). - Clean-up (EM_AARCH64/EM_ARM to elf-em.h, ELF notes in read-only segment, unused variable). - Bug-fixes (RAM boundaries not 2MB aligned, perf, includes). * tag 'arm64-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64: Documentation/arm64: clarify requirements for DTB placement arm64: mm: permit use of tagged pointers at EL0 Move the EM_ARM and EM_AARCH64 definitions to uapi/linux/elf-em.h arm64: Remove unused cpu_name ascii in arch/arm64/mm/proc.S arm64: delay: don't bother reporting bogomips in /proc/cpuinfo arm64: Fix mapping of memory banks not ending on a PMD_SIZE boundary arm64: move elf notes into readonly segment arm64: Enable interrupts in the EL0 undef handler arm64: Expand arm64 image header ARM64: include: asm: include "asm/types.h" in "pgtable-2level-types.h" and "pgtable-3level-types.h" arm64: add support for kernel mode NEON arm64: perf: fix ARMv8 EVTYPE_MASK to include NSH bit arm64: perf: fix group validation when using enable_on_exec
Diffstat (limited to 'arch/arm64/kernel/entry.S')
-rw-r--r--arch/arm64/kernel/entry.S3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm64/kernel/entry.S b/arch/arm64/kernel/entry.S
index 6ad781b21c0..3881fd115eb 100644
--- a/arch/arm64/kernel/entry.S
+++ b/arch/arm64/kernel/entry.S
@@ -423,6 +423,7 @@ el0_da:
* Data abort handling
*/
mrs x0, far_el1
+ bic x0, x0, #(0xff << 56)
disable_step x1
isb
enable_dbg
@@ -476,6 +477,8 @@ el0_undef:
* Undefined instruction
*/
mov x0, sp
+ // enable interrupts before calling the main handler
+ enable_irq
b do_undefinstr
el0_dbg:
/*