Ralf: is there a reason you've only applied patch 1 of this series?
v4.2 is broken because these didn't get in (despite being submitted well
before the release), and master is still broken because they still
haven't gotten in. If there's a reason you didn't merge them please let
me know, otherwise please can we get them in ASAP.
Thanks,
Paul
On Wed, Aug 05, 2015 at 03:42:40PM -0700, Paul Burton wrote:
> Commit 977e043d5ea1 ("MIPS: kernel: cps-vec: Replace mips32r2 ISA level
> with mips64r2") leads to .set mips64r2 directives being present in 32
> bit (ie. CONFIG_32BIT=y) kernels. This is incorrect & leads to MIPS64
> instructions being emitted by the assembler when expanding
> pseudo-instructions. For example the "move" instruction can legitimately
> be expanded to a "daddu". This causes problems when the kernel is run on
> a MIPS32 CPU, as CONFIG_32BIT kernels of course often are...
>
> Fix this by dropping the .set <ISA> directives entirely now that Kconfig
> should be ensuring that kernels including this code are built with a
> suitable -march= compiler flag.
>
> Signed-off-by: Paul Burton <paul.burton@xxxxxxxxxx>
> Cc: Markos Chandras <markos.chandras@xxxxxxxxxx>
> Cc: <stable@xxxxxxxxxxxxxxx> # 3.16+
> ---
>
> arch/mips/kernel/cps-vec.S | 2 --
> 1 file changed, 2 deletions(-)
>
> diff --git a/arch/mips/kernel/cps-vec.S b/arch/mips/kernel/cps-vec.S
> index 209ded1..763d8b7 100644
> --- a/arch/mips/kernel/cps-vec.S
> +++ b/arch/mips/kernel/cps-vec.S
> @@ -229,7 +229,6 @@ LEAF(mips_cps_core_init)
> has_mt t0, 3f
>
> .set push
> - .set mips64r2
> .set mt
>
> /* Only allow 1 TC per VPE to execute... */
> @@ -348,7 +347,6 @@ LEAF(mips_cps_boot_vpes)
> nop
>
> .set push
> - .set mips64r2
> .set mt
>
> 1: /* Enter VPE configuration state */
> --
> 2.5.0
>
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