Andi Kleen <andi at firstfloor.org> writes:
> Export kexec.h
>
> kexec_load is a system call and it needs a header
> file with its input arguments.
>
> Export the parts of kexec.h needed for this.
>
> Cc: ebiederm at xmission.com
>
> Signed-off-by: Andi Kleen <ak at linux.intel.com>
Is there a corresponding patch for /sbin/kexec ?
What is the reason for wanting to export a currently kernel only header?
Not that I am really opposed but without a bit more context I can't
make a reasonable review of these patches.
Eric
> diff --git a/include/linux/Kbuild b/include/linux/Kbuild
> index 2fc8e14..8fd5d09 100644
> --- a/include/linux/Kbuild
> +++ b/include/linux/Kbuild
> @@ -389,3 +389,5 @@ unifdef-y += xfrm.h
> objhdr-y += version.h
> header-y += wimax.h
> header-y += wimax/
> +
> +unifdef-y += kexec.h
> diff --git a/include/linux/kexec.h b/include/linux/kexec.h
> index 03e8e8d..f4c5a0e 100644
> --- a/include/linux/kexec.h
> +++ b/include/linux/kexec.h
> @@ -1,8 +1,46 @@
> #ifndef LINUX_KEXEC_H
> #define LINUX_KEXEC_H
>
> -#ifdef CONFIG_KEXEC
> +/* Kexec: one kernel loading another */
> +
> +#ifdef __KERNEL__
> +#include <linux/compiler.h>
> #include <linux/types.h>
> +#endif
> +
> +#define KEXEC_ON_CRASH 0x00000001
> +#define KEXEC_PRESERVE_CONTEXT 0x00000002
> +#define KEXEC_ARCH_MASK 0xffff0000
> +
> +/* These values match the ELF architecture values.
> + * Unless there is a good reason that should continue to be the case.
> + */
> +#define KEXEC_ARCH_DEFAULT ( 0 << 16)
> +#define KEXEC_ARCH_386 ( 3 << 16)
> +#define KEXEC_ARCH_X86_64 (62 << 16)
> +#define KEXEC_ARCH_PPC (20 << 16)
> +#define KEXEC_ARCH_PPC64 (21 << 16)
> +#define KEXEC_ARCH_IA_64 (50 << 16)
> +#define KEXEC_ARCH_ARM (40 << 16)
> +#define KEXEC_ARCH_S390 (22 << 16)
> +#define KEXEC_ARCH_SH (42 << 16)
> +#define KEXEC_ARCH_MIPS_LE (10 << 16)
> +#define KEXEC_ARCH_MIPS ( 8 << 16)
> +
> +#define KEXEC_SEGMENT_MAX 16
> +struct kexec_segment {
> + void __user *buf;
> + size_t bufsz;
> +#ifdef __KERNEL__
> + unsigned long mem; /* User space sees this as a (void *) ... */
> +#else
> + void *mem;
> +#endif
> + size_t memsz;
> +};
> +
> +#ifdef __KERNEL__
> +#ifdef CONFIG_KEXEC
> #include <linux/list.h>
> #include <linux/linkage.h>
> #include <linux/compat.h>
> @@ -57,14 +95,6 @@ typedef unsigned long kimage_entry_t;
> #define IND_DONE 0x4
> #define IND_SOURCE 0x8
>
> -#define KEXEC_SEGMENT_MAX 16
> -struct kexec_segment {
> - void __user *buf;
> - size_t bufsz;
> - unsigned long mem; /* User space sees this as a (void *) ... */
> - size_t memsz;
> -};
> -
> #ifdef CONFIG_COMPAT
> struct compat_kexec_segment {
> compat_uptr_t buf;
> @@ -163,25 +193,6 @@ extern struct kimage *kexec_crash_image;
> #define kexec_flush_icache_page(page)
> #endif
>
> -#define KEXEC_ON_CRASH 0x00000001
> -#define KEXEC_PRESERVE_CONTEXT 0x00000002
> -#define KEXEC_ARCH_MASK 0xffff0000
> -
> -/* These values match the ELF architecture values.
> - * Unless there is a good reason that should continue to be the case.
> - */
> -#define KEXEC_ARCH_DEFAULT ( 0 << 16)
> -#define KEXEC_ARCH_386 ( 3 << 16)
> -#define KEXEC_ARCH_X86_64 (62 << 16)
> -#define KEXEC_ARCH_PPC (20 << 16)
> -#define KEXEC_ARCH_PPC64 (21 << 16)
> -#define KEXEC_ARCH_IA_64 (50 << 16)
> -#define KEXEC_ARCH_ARM (40 << 16)
> -#define KEXEC_ARCH_S390 (22 << 16)
> -#define KEXEC_ARCH_SH (42 << 16)
> -#define KEXEC_ARCH_MIPS_LE (10 << 16)
> -#define KEXEC_ARCH_MIPS ( 8 << 16)
> -
> /* List of defined/legal kexec flags */
> #ifndef CONFIG_KEXEC_JUMP
> #define KEXEC_FLAGS KEXEC_ON_CRASH
> @@ -215,4 +226,5 @@ struct task_struct;
> static inline void crash_kexec(struct pt_regs *regs) { }
> static inline int kexec_should_crash(struct task_struct *p) { return 0; }
> #endif /* CONFIG_KEXEC */
> +#endif
> #endif /* LINUX_KEXEC_H */
