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s390/kexec_file: Simplify parmarea access

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Access the parmarea in head.S via a struct instead of individual offsets.

While at it make the fields in the parmarea .quads.

Signed-off-by: Philipp Rudo <prudo@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Philipp Rudo
2019-03-06 17:36:26 +01:00
committed by Martin Schwidefsky
parent 4c0f032d49
commit d0d249d75d
6 changed files with 28 additions and 25 deletions
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23
arch/s390/kernel/machine_kexec_file.c
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@@ -25,24 +25,12 @@ int *kexec_file_update_kernel(struct kimage *image,
if (image->cmdline_buf_len >= ARCH_COMMAND_LINE_SIZE)
return ERR_PTR(-EINVAL);
if (image->cmdline_buf_len)
memcpy(data->kernel_buf + COMMAND_LINE_OFFSET,
image->cmdline_buf, image->cmdline_buf_len);
memcpy(data->parm->command_line, image->cmdline_buf,
image->cmdline_buf_len);
if (image->type == KEXEC_TYPE_CRASH) {
loc = (unsigned long *)(data->kernel_buf + OLDMEM_BASE_OFFSET);
*loc = crashk_res.start;
loc = (unsigned long *)(data->kernel_buf + OLDMEM_SIZE_OFFSET);
*loc = crashk_res.end - crashk_res.start + 1;
}
if (image->initrd_buf) {
loc = (unsigned long *)(data->kernel_buf + INITRD_START_OFFSET);
*loc = data->initrd_load_addr;
loc = (unsigned long *)(data->kernel_buf + INITRD_SIZE_OFFSET);
*loc = image->initrd_buf_len;
data->parm->oldmem_base = crashk_res.start;
data->parm->oldmem_size = crashk_res.end - crashk_res.start + 1;
}
return NULL;
@@ -127,7 +115,8 @@ int kexec_file_add_initrd(struct kimage *image, struct s390_load_data *data,
buf.mem += crashk_res.start;
buf.memsz = buf.bufsz;
data->initrd_load_addr = buf.mem;
data->parm->initrd_start = buf.mem;
data->parm->initrd_size = buf.memsz;
data->memsz += buf.memsz;
ret = kexec_add_buffer(&buf);