Messages in this thread Patch in this message | | | From | Kamal Mostafa <> | Subject | [3.19.y-ckt stable] Patch "MIPS: CPS: Don't include MT code in non-MT kernels." has been added to staging queue | Date | Thu, 12 Nov 2015 12:39:45 -0800 |
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This is a note to let you know that I have just added a patch titled
MIPS: CPS: Don't include MT code in non-MT kernels.
to the linux-3.19.y-queue branch of the 3.19.y-ckt extended stable tree which can be found at:
http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-3.19.y-queue
This patch is scheduled to be released in version 3.19.8-ckt10.
If you, or anyone else, feels it should not be added to this tree, please reply to this email.
For more information about the 3.19.y-ckt tree, see https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable
Thanks. -Kamal
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From 1e3159d27000240307fee68bf78f6d1f91514ae2 Mon Sep 17 00:00:00 2001 From: Paul Burton <paul.burton@imgtec.com> Date: Wed, 5 Aug 2015 15:42:37 -0700 Subject: MIPS: CPS: Don't include MT code in non-MT kernels.
commit a5b0f6db0e6cf6224e50f6585e9c8f0c2d38a8f8 upstream.
The MT-specific code in mips_cps_boot_vpes can safely be omitted from kernels which don't support MT, with the default VPE==0 case being used as it would be after the has_mt (Config3.MT) check failed at runtime. Discarding the code entirely will save us a few bytes & allow cleaner handling of MT ASE instructions by later patches.
Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Markos Chandras <markos.chandras@imgtec.com> Cc: James Hogan <james.hogan@imgtec.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/10866/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Kamal Mostafa <kamal@canonical.com> --- arch/mips/kernel/cps-vec.S | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/arch/mips/kernel/cps-vec.S b/arch/mips/kernel/cps-vec.S index 24b8c0b6..d729a5e 100644 --- a/arch/mips/kernel/cps-vec.S +++ b/arch/mips/kernel/cps-vec.S @@ -311,6 +311,7 @@ LEAF(mips_cps_boot_vpes)
/* Calculate this VPEs ID. If the core doesn't support MT use 0 */ li t9, 0 +#ifdef CONFIG_MIPS_MT has_mt t6, 1f
/* Find the number of VPEs present in the core */ @@ -330,6 +331,7 @@ LEAF(mips_cps_boot_vpes) /* Retrieve the VPE ID from EBase.CPUNum */ mfc0 t9, $15, 1 and t9, t9, t1 +#endif
1: /* Calculate a pointer to this VPEs struct vpe_boot_config */ li t1, VPEBOOTCFG_SIZE -- 1.9.1
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