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From: Christophe Leroy <christophe.leroy@csgroup.eu>
To: Nicholas Piggin <npiggin@gmail.com>,
	"linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>
Subject: Re: [PATCH 0/4] powerpc/64: ELFv2 conversion
Date: Fri, 5 May 2023 08:51:46 +0000	[thread overview]
Message-ID: <6d0609ae-e31b-8530-7509-7861b07d66c7@csgroup.eu> (raw)
In-Reply-To: <20230505071850.228734-1-npiggin@gmail.com>



Le 05/05/2023 à 09:18, Nicholas Piggin a écrit :
> This series has the steps to remove ELFv1 from the kernel build.
> Patch 1 is a build fix, 2 defaults everything to ELFv2, 3 is
> really a separate issue that concerns userspace. 4 removes v1
> support.

I see CONFIG_MPROFILE_KERNEL is restricted to LITTLE_ENDIAN. Is that 
correct ? Don't we have mprofile_kernel as well on BIG ENDIAN once 
switched to ABI v2 ? If so, can we drop the -pg based profiling 
completely, or is CLANG still not supporting mprofile_kernel ?

Christophe

> 
> Would like to try getting patch 1 in as a fix, then 2,3 merged in
> the next merge window.
> 
> Thanks,
> Nick
> 
> Nicholas Piggin (4):
>    powerpc/64: Force ELFv2 when building with LLVM linker
>    powerpc/64: Make ELFv2 the default for big-endian builds
>    powerpc/64s: Remove support for ELFv1 little endian userspace
>    powerpc/64: Remove support for kernel's built with ELFv1 ABI
> 
>   arch/powerpc/Kconfig                     | 21 ------
>   arch/powerpc/Makefile                    | 15 +----
>   arch/powerpc/boot/Makefile               |  4 +-
>   arch/powerpc/include/asm/code-patching.h | 36 ++--------
>   arch/powerpc/include/asm/elf.h           |  6 ++
>   arch/powerpc/include/asm/kfence.h        |  4 --
>   arch/powerpc/include/asm/linkage.h       |  9 ---
>   arch/powerpc/include/asm/module.h        |  3 -
>   arch/powerpc/include/asm/ppc_asm.h       | 38 +----------
>   arch/powerpc/include/asm/ptrace.h        | 17 +----
>   arch/powerpc/include/asm/sections.h      |  4 --
>   arch/powerpc/include/asm/thread_info.h   |  6 +-
>   arch/powerpc/kernel/exceptions-64s.S     |  2 +-
>   arch/powerpc/kernel/fadump.c             |  6 +-
>   arch/powerpc/kernel/head_64.S            |  5 +-
>   arch/powerpc/kernel/interrupt_64.S       |  4 --
>   arch/powerpc/kernel/kprobes.c            | 39 +----------
>   arch/powerpc/kernel/misc_64.S            |  4 --
>   arch/powerpc/kernel/module.c             |  8 ---
>   arch/powerpc/kernel/module_64.c          | 84 ++++--------------------
>   arch/powerpc/kernel/trace/ftrace.c       | 10 ---
>   arch/powerpc/kernel/vdso/Makefile        |  2 +-
>   arch/powerpc/kernel/vdso/gettimeofday.S  |  2 +-
>   arch/powerpc/kernel/vmlinux.lds.S        |  8 ---
>   arch/powerpc/kvm/book3s_hv_rmhandlers.S  | 36 +++++-----
>   arch/powerpc/kvm/book3s_interrupts.S     | 14 ++--
>   arch/powerpc/kvm/book3s_rmhandlers.S     | 12 +---
>   arch/powerpc/net/bpf_jit.h               |  6 --
>   arch/powerpc/net/bpf_jit_comp.c          | 14 ++--
>   arch/powerpc/net/bpf_jit_comp64.c        | 13 ++--
>   arch/powerpc/platforms/Kconfig.cputype   |  6 --
>   drivers/crypto/vmx/Makefile              |  4 --
>   kernel/extable.c                         |  2 +-
>   kernel/trace/ftrace.c                    | 12 ----
>   34 files changed, 79 insertions(+), 377 deletions(-)
> 

  parent reply	other threads:[~2023-05-05  8:52 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-05-05  7:18 [PATCH 0/4] powerpc/64: ELFv2 conversion Nicholas Piggin
2023-05-05  7:18 ` [PATCH 1/4] powerpc/64: Force ELFv2 when building with LLVM linker Nicholas Piggin
2023-05-05 21:39   ` Nathan Chancellor
2023-05-05 21:39     ` Nathan Chancellor
2023-05-05  7:18 ` [PATCH 2/4] powerpc/64: Make ELFv2 the default for big-endian builds Nicholas Piggin
2023-05-05  7:18 ` [PATCH 3/4] powerpc/64s: Remove support for ELFv1 little endian userspace Nicholas Piggin
2023-05-05  7:18 ` [RFC PATCH 4/4] powerpc/64: Remove support for kernel's built with ELFv1 ABI Nicholas Piggin
2023-05-05  8:49   ` Christophe Leroy
2023-05-09  8:25     ` Nicholas Piggin
2023-05-05  8:51 ` Christophe Leroy [this message]
2023-05-05 12:21   ` [PATCH 0/4] powerpc/64: ELFv2 conversion Michael Ellerman
2023-05-05 15:08     ` Naveen N. Rao

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