diff options
| author | Dave Martin <dave.martin@linaro.org> | 2012-11-30 12:56:05 +0100 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2013-01-10 22:08:22 +0100 |
| commit | a4a12e008e292a81d312659529b71be2026ab355 (patch) | |
| tree | 184dad4b209335a554ea5dc9d25c6e097f061d66 /arch | |
| parent | Linux 3.8-rc3 (diff) | |
| download | linux-a4a12e008e292a81d312659529b71be2026ab355.tar.xz linux-a4a12e008e292a81d312659529b71be2026ab355.zip | |
ARM: virt: Avoid bx instruction for compatibility with <=ARMv4
Non-T variants of ARMv4 do not support the bx instruction.
However, __hyp_stub_install is always called from the same
instruction set used to build the bulk of the kernel, so bx should
not be necessary.
This patch uses the traditional "mov pc" instead of bx.
Cc: <stable@vger.kernel.org>
Signed-off-by: Dave Martin <dave.martin@linaro.org>
[will: fixed up remaining bx instruction]
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/kernel/hyp-stub.S | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/arm/kernel/hyp-stub.S b/arch/arm/kernel/hyp-stub.S index 65b2417aebce..3c60256d3927 100644 --- a/arch/arm/kernel/hyp-stub.S +++ b/arch/arm/kernel/hyp-stub.S @@ -99,7 +99,7 @@ ENTRY(__hyp_stub_install_secondary) * immediately. */ compare_cpu_mode_with_primary r4, r5, r6, r7 - bxne lr + movne pc, lr /* * Once we have given up on one CPU, we do not try to install the @@ -111,7 +111,7 @@ ENTRY(__hyp_stub_install_secondary) */ cmp r4, #HYP_MODE - bxne lr @ give up if the CPU is not in HYP mode + movne pc, lr @ give up if the CPU is not in HYP mode /* * Configure HSCTLR to set correct exception endianness/instruction set @@ -200,7 +200,7 @@ ENDPROC(__hyp_get_vectors) @ fall through ENTRY(__hyp_set_vectors) __HVC(0) - bx lr + mov pc, lr ENDPROC(__hyp_set_vectors) #ifndef ZIMAGE |