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x86/kexec: remove unnecessary arch_kexec_kernel_image_load()

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Patch series "kexec: Remove unnecessary arch hook", v2.

There are no arch-specific things in arch_kexec_kernel_image_load(), so
remove it and just use the generic version.


This patch (of 2):

The x86 implementation of arch_kexec_kernel_image_load() is functionally
identical to the generic arch_kexec_kernel_image_load():

  arch_kexec_kernel_image_load                # x86
    if (!image->fops || !image->fops->load)
      return ERR_PTR(-ENOEXEC);
    return image->fops->load(image, image->kernel_buf, ...)

  arch_kexec_kernel_image_load                # generic
    kexec_image_load_default
      if (!image->fops || !image->fops->load)
	return ERR_PTR(-ENOEXEC);
      return image->fops->load(image, image->kernel_buf, ...)

Remove the x86-specific version and use the generic
arch_kexec_kernel_image_load().  No functional change intended.

Link: https://lkml.kernel.org/r/20230307224416.907040-1-helgaas@kernel.org
Link: https://lkml.kernel.org/r/20230307224416.907040-2-helgaas@kernel.org
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Acked-by: Baoquan He <bhe@redhat.com>
Cc: Borislav Petkov (AMD) <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Bjorn Helgaas 2023-03-07 16:44:15 -06:00 committed by Andrew Morton
parent a74d9a3f4f
commit 7982722ff7
3 changed files with 0 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
arch/x86/include/asm/kexec.h
View File

@ -200,9 +200,6 @@ int arch_kexec_apply_relocations_add(struct purgatory_info *pi,
const Elf_Shdr *symtab);
#define arch_kexec_apply_relocations_add arch_kexec_apply_relocations_add
void *arch_kexec_kernel_image_load(struct kimage *image);
#define arch_kexec_kernel_image_load arch_kexec_kernel_image_load
int arch_kimage_file_post_load_cleanup(struct kimage *image);
#define arch_kimage_file_post_load_cleanup arch_kimage_file_post_load_cleanup
#endif

11
arch/x86/kernel/machine_kexec_64.c
View File

@ -374,17 +374,6 @@ void machine_kexec(struct kimage *image)
/* arch-dependent functionality related to kexec file-based syscall */
#ifdef CONFIG_KEXEC_FILE
void *arch_kexec_kernel_image_load(struct kimage *image)
{
if (!image->fops || !image->fops->load)
return ERR_PTR(-ENOEXEC);
return image->fops->load(image, image->kernel_buf,
image->kernel_buf_len, image->initrd_buf,
image->initrd_buf_len, image->cmdline_buf,
image->cmdline_buf_len);
}
/*
* Apply purgatory relocations.
*

2
include/linux/kexec.h
View File

@ -207,12 +207,10 @@ static inline int arch_kimage_file_post_load_cleanup(struct kimage *image)
}
#endif
#ifndef arch_kexec_kernel_image_load
static inline void *arch_kexec_kernel_image_load(struct kimage *image)
{
return kexec_image_load_default(image);
}
#endif
#ifdef CONFIG_KEXEC_SIG
#ifdef CONFIG_SIGNED_PE_FILE_VERIFICATION