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| author |   Philipp Rudo <prudo@linux.ibm.com> | 2019-03-07 15:56:34 +0100 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2019-04-29 10:44:00 +0200 |
| commit | 653beba24d4cd281b078eab48c9bce956939061c (patch) | |
| tree | 666e391e3156330ba0f82d216408aae68bd9e2e6 /arch/s390/include/asm/kexec.h | |
| parent | s390/kexec_file: Unify loader code (diff) | |
| download | linux-dev-653beba24d4cd281b078eab48c9bce956939061c.tar.xz linux-dev-653beba24d4cd281b078eab48c9bce956939061c.zip | |
s390/kexec_file: Load new kernel to absolute 0
The leading 64 kB of a kernel image doesn't contain any data needed to boot
the new kernel when it was loaded via kexec_file. Thus kexec_file currently
strips them off before loading the image. Keep the leading 64 kB in order
to be able to pass a ipl_report to the next kernel.
Signed-off-by: Philipp Rudo <prudo@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/kexec.h')
| -rw-r--r-- | arch/s390/include/asm/kexec.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/s390/include/asm/kexec.h b/arch/s390/include/asm/kexec.h index a38a57ec6d8f..9ec077b0fb4d 100644 --- a/arch/s390/include/asm/kexec.h +++ b/arch/s390/include/asm/kexec.h @@ -43,6 +43,9 @@ /* The native architecture */ #define KEXEC_ARCH KEXEC_ARCH_S390 +/* Allow kexec_file to load a segment to 0 */ +#define KEXEC_BUF_MEM_UNKNOWN -1 + /* Provide a dummy definition to avoid build failures. */ static inline void crash_setup_regs(struct pt_regs *newregs, struct pt_regs *oldregs) { } @@ -52,6 +55,9 @@ struct s390_load_data { /* Pointer to the kernel buffer. Used to register cmdline etc.. */ void *kernel_buf; + /* Load address of the kernel_buf. */ + unsigned long kernel_mem; + /* Parmarea in the kernel buffer. */ struct parmarea *parm; |