+ PPC ML as an FYI that this change will come through tip.
On Fri, Mar 25, 2022 at 11:39:51AM -0400, Brian Gerst wrote:
> x86-32 was the last architecture that implemented separate user and
> kernel registers.
>
> Signed-off-by: Brian Gerst <brge...@gmail.com>
> ---
> arch/powerpc/kernel/fadump.c | 2 +-
> arch/powerpc/platforms/powernv/opal-core.c | 2 +-
> include/linux/elfcore.h | 9 ---------
> kernel/kexec_core.c | 2 +-
> 4 files changed, 3 insertions(+), 12 deletions(-)
>
> diff --git a/arch/powerpc/kernel/fadump.c b/arch/powerpc/kernel/fadump.c
> index 4fdb7c77fda1..c0cf17196d6c 100644
> --- a/arch/powerpc/kernel/fadump.c
> +++ b/arch/powerpc/kernel/fadump.c
> @@ -752,7 +752,7 @@ u32 *__init fadump_regs_to_elf_notes(u32 *buf, struct
> pt_regs *regs)
> * FIXME: How do i get PID? Do I really need it?
> * prstatus.pr_pid = ????
> */
> - elf_core_copy_kernel_regs(&prstatus.pr_reg, regs);
> + elf_core_copy_regs(&prstatus.pr_reg, regs);
> buf = append_elf_note(buf, CRASH_CORE_NOTE_NAME, NT_PRSTATUS,
> &prstatus, sizeof(prstatus));
> return buf;
> diff --git a/arch/powerpc/platforms/powernv/opal-core.c
> b/arch/powerpc/platforms/powernv/opal-core.c
> index 0331f1973f0e..dd6e99edff76 100644
> --- a/arch/powerpc/platforms/powernv/opal-core.c
> +++ b/arch/powerpc/platforms/powernv/opal-core.c
> @@ -112,7 +112,7 @@ static void __init fill_prstatus(struct elf_prstatus
> *prstatus, int pir,
> struct pt_regs *regs)
> {
> memset(prstatus, 0, sizeof(struct elf_prstatus));
> - elf_core_copy_kernel_regs(&(prstatus->pr_reg), regs);
> + elf_core_copy_regs(&(prstatus->pr_reg), regs);
>
> /*
> * Overload PID with PIR value.
> diff --git a/include/linux/elfcore.h b/include/linux/elfcore.h
> index f8e206e82476..346a8b56cdc8 100644
> --- a/include/linux/elfcore.h
> +++ b/include/linux/elfcore.h
> @@ -84,15 +84,6 @@ static inline void elf_core_copy_regs(elf_gregset_t
> *elfregs, struct pt_regs *re
> #endif
> }
>
> -static inline void elf_core_copy_kernel_regs(elf_gregset_t *elfregs, struct
> pt_regs *regs)
> -{
> -#ifdef ELF_CORE_COPY_KERNEL_REGS
> - ELF_CORE_COPY_KERNEL_REGS((*elfregs), regs);
> -#else
> - elf_core_copy_regs(elfregs, regs);
> -#endif
> -}
> -
> static inline int elf_core_copy_task_regs(struct task_struct *t,
> elf_gregset_t* elfregs)
> {
> #if defined (ELF_CORE_COPY_TASK_REGS)
> diff --git a/kernel/kexec_core.c b/kernel/kexec_core.c
> index 68480f731192..be4b54c2c615 100644
> --- a/kernel/kexec_core.c
> +++ b/kernel/kexec_core.c
> @@ -1078,7 +1078,7 @@ void crash_save_cpu(struct pt_regs *regs, int cpu)
> return;
> memset(&prstatus, 0, sizeof(prstatus));
> prstatus.common.pr_pid = current->pid;
> - elf_core_copy_kernel_regs(&prstatus.pr_reg, regs);
> + elf_core_copy_regs(&prstatus.pr_reg, regs);
> buf = append_elf_note(buf, KEXEC_CORE_NOTE_NAME, NT_PRSTATUS,
> &prstatus, sizeof(prstatus));
> final_note(buf);
> --
> 2.35.1
>
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
