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ELF: Remove elf_core_copy_kernel_regs()

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x86-32 was the last architecture that implemented separate user and
kernel registers.

Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Andy Lutomirski <luto@kernel.org>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220325153953.162643-3-brgerst@gmail.com
This commit is contained in:
Brian Gerst 2022-03-25 11:39:51 -04:00 committed by Borislav Petkov
parent f5d9283ecb
commit 9554e908fb
4 changed files with 3 additions and 12 deletions
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2
arch/powerpc/kernel/fadump.c
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@ -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;

2
arch/powerpc/platforms/powernv/opal-core.c
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@ -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.

9
include/linux/elfcore.h
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@ -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)

2
kernel/kexec_core.c
View File

@ -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);