On Thu, Aug 06, 2015 at 04:30:01PM -0700, [email protected] wrote:
>
> This is a note to let you know that I've just added the patch titled
>
> MIPS: kernel: cps-vec: Replace mips32r2 ISA level with mips64r2
>
> to the 4.1-stable tree which can be found at:
>
> http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
>
> The filename of the patch is:
> mips-kernel-cps-vec-replace-mips32r2-isa-level-with-mips64r2.patch
> and it can be found in the queue-4.1 subdirectory.
>
> If you, or anyone else, feels it should not be added to the stable tree,
> please let <[email protected]> know about it.
Hi Greg,
This patch breaks the boot of SMP kernels on Imagination's current
MIPS32 systems. This & the other MIPS64 related patches that were
submitted as part of the same series do not improve things for any CPUs
that Linux supports even as of the v4.2 cycle, so I do not believe they
should have been marked for backport.
So please either drop this patch (& preferrably the other MIPS64 CPS SMP
ones too) or also backport the series I've just submitted:
http://marc.info/?l=linux-mips&m=143881461431570&w=2
My preference would be for not backporting any of these:
> queue-4.1/mips-kernel-cps-vec-replace-mips32r2-isa-level-with-mips64r2.patch
> queue-4.1/mips-kernel-cps-vec-use-ta0-ta3-pseudo-registers-for-64-bit.patch
> queue-4.1/revert-mips-kconfig-disable-smp-cps-for-64-bit.patch
> queue-4.1/mips-kernel-cps-vec-replace-la-macro-with-ptr_la.patch
> queue-4.1/mips-kernel-smp-cps-fix-64-bit-compatibility-errors-due-to-pointer-casting.patch
> queue-4.1/mips-kernel-cps-vec-replace-kseg0-with-ckseg0.patch
> queue-4.1/mips-cps-vec-use-macros-for-various-arithmetics-and-memory-operations.patch
Thanks,
Paul
>
> From 977e043d5ea1270ce985e4c165724ff91dc3c3e2 Mon Sep 17 00:00:00 2001
> From: Markos Chandras <[email protected]>
> Date: Wed, 1 Jul 2015 09:13:30 +0100
> Subject: MIPS: kernel: cps-vec: Replace mips32r2 ISA level with mips64r2
>
> From: Markos Chandras <[email protected]>
>
> commit 977e043d5ea1270ce985e4c165724ff91dc3c3e2 upstream.
>
> mips32r2 is a subset of mips64r2, so we replace mips32r2 with mips64r2
> in preparation for 64-bit CPS support.
>
> Reviewed-by: Paul Burton <[email protected]>
> Signed-off-by: Markos Chandras <[email protected]>
> Cc: [email protected]
> Patchwork: https://patchwork.linux-mips.org/patch/10588/
> Signed-off-by: Ralf Baechle <[email protected]>
> Signed-off-by: Greg Kroah-Hartman <[email protected]>
>
> ---
> arch/mips/kernel/cps-vec.S | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> --- a/arch/mips/kernel/cps-vec.S
> +++ b/arch/mips/kernel/cps-vec.S
> @@ -229,7 +229,7 @@ LEAF(mips_cps_core_init)
> nop
>
> .set push
> - .set mips32r2
> + .set mips64r2
> .set mt
>
> /* Only allow 1 TC per VPE to execute... */
> @@ -346,7 +346,7 @@ LEAF(mips_cps_boot_vpes)
> nop
>
> .set push
> - .set mips32r2
> + .set mips64r2
> .set mt
>
> 1: /* Enter VPE configuration state */
>
>
> Patches currently in stable-queue which might be from
> [email protected] are
>
> queue-4.1/mips-kernel-cps-vec-replace-mips32r2-isa-level-with-mips64r2.patch
> queue-4.1/mips-kernel-cps-vec-use-ta0-ta3-pseudo-registers-for-64-bit.patch
> queue-4.1/revert-mips-kconfig-disable-smp-cps-for-64-bit.patch
> queue-4.1/mips-require-o32-fp64-support-for-mips64-with-o32-compat.patch
> queue-4.1/mips-fpu.h-allow-64-bit-fpu-on-a-64-bit-mips-r6-cpu.patch
> queue-4.1/mips-kernel-cps-vec-replace-la-macro-with-ptr_la.patch
> queue-4.1/mips-c-r4k-fix-cache-flushing-for-mt-cores.patch
> queue-4.1/mips-kernel-smp-cps-fix-64-bit-compatibility-errors-due-to-pointer-casting.patch
> queue-4.1/mips-kernel-cps-vec-replace-kseg0-with-ckseg0.patch
> queue-4.1/mips-fix-erroneous-jr-emulation-for-mips-r6.patch
> queue-4.1/mips-cps-vec-use-macros-for-various-arithmetics-and-memory-operations.patch
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