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    Subject[PATCH 01/03] kexec: Avoid overwriting the current pgd (V2, stubs)
    Date
    kexec: Avoid overwriting the current pgd (V2, stubs)

    This patch adds an architecture specific structure "struct kimage_arch" to
    struct kimage. This structure is filled in with members by the architecture
    specific patches followed by this one.

    Signed-off-by: Magnus Damm <magnus@valinux.co.jp>
    ---

    Applies on top of 2.6.16 and 2.6.17-rc4.

    asm-i386/kexec.h | 2 ++
    asm-powerpc/kexec.h | 2 ++
    asm-s390/kexec.h | 2 ++
    asm-sh/kexec.h | 2 ++
    asm-x86_64/kexec.h | 2 ++
    linux/kexec.h | 2 ++
    6 files changed, 12 insertions(+)

    --- 0001/include/asm-i386/kexec.h
    +++ work/include/asm-i386/kexec.h 2006-05-19 11:54:07.000000000 +0900
    @@ -29,6 +29,8 @@

    #define MAX_NOTE_BYTES 1024

    +struct kimage_arch {};
    +
    /* CPU does not save ss and esp on stack if execution is already
    * running in kernel mode at the time of NMI occurrence. This code
    * fixes it.
    --- 0001/include/asm-powerpc/kexec.h
    +++ work/include/asm-powerpc/kexec.h 2006-05-18 11:13:13.000000000 +0900
    @@ -108,6 +108,8 @@ static inline void crash_setup_regs(stru

    #define MAX_NOTE_BYTES 1024

    +struct kimage_arch {};
    +
    #ifdef __powerpc64__
    extern void kexec_smp_wait(void); /* get and clear naca physid, wait for
    master to copy new code to 0 */
    --- 0001/include/asm-s390/kexec.h
    +++ work/include/asm-s390/kexec.h 2006-05-18 11:13:13.000000000 +0900
    @@ -36,6 +36,8 @@

    #define MAX_NOTE_BYTES 1024

    +struct kimage_arch {};
    +
    /* Provide a dummy definition to avoid build failures. */
    static inline void crash_setup_regs(struct pt_regs *newregs,
    struct pt_regs *oldregs) { }
    --- 0001/include/asm-sh/kexec.h
    +++ work/include/asm-sh/kexec.h 2006-05-18 11:13:13.000000000 +0900
    @@ -25,6 +25,8 @@

    #ifndef __ASSEMBLY__

    +struct kimage_arch {};
    +
    extern void machine_shutdown(void);
    extern void *crash_notes;

    --- 0001/include/asm-x86_64/kexec.h
    +++ work/include/asm-x86_64/kexec.h 2006-05-18 11:13:13.000000000 +0900
    @@ -29,6 +29,8 @@

    #define MAX_NOTE_BYTES 1024

    +struct kimage_arch {};
    +
    /*
    * Saving the registers of the cpu on which panic occured in
    * crash_kexec to save a valid sp. The registers of other cpus
    --- 0001/include/linux/kexec.h
    +++ work/include/linux/kexec.h 2006-05-18 11:13:13.000000000 +0900
    @@ -69,6 +69,8 @@ struct kimage {
    unsigned long start;
    struct page *control_code_page;

    + struct kimage_arch arch_data;
    +
    unsigned long nr_segments;
    struct kexec_segment segment[KEXEC_SEGMENT_MAX];

    -
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