Commit 9554e908 authored by Brian Gerst's avatar Brian Gerst Committed by Borislav Petkov
Browse files

ELF: Remove elf_core_copy_kernel_regs() 



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

Signed-off-by: default avatarBrian Gerst <brgerst@gmail.com>
Signed-off-by: default avatarBorislav Petkov <bp@suse.de>
Reviewed-by: default avatarThomas Gleixner <tglx@linutronix.de>
Acked-by: default avatarAndy Lutomirski <luto@kernel.org>
Acked-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220325153953.162643-3-brgerst@gmail.com
parent f5d9283e

arch/powerpc/kernel/fadump.c

+1 −1
Original line number Diff line number Diff line
@@ -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;

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

+1 −1
Original line number Diff line number Diff line
@@ -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.

include/linux/elfcore.h

+0 −9
Original line number Diff line number Diff line
@@ -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)

kernel/kexec_core.c

+1 −1
Original line number Diff line number Diff line
@@ -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);