Hi, On 02/26/18 at 04:16pm, Philipp Rudo wrote: > The main loop currently uses quite a lot of variables to update the section > headers. Some of them are unnecessary. So clean them up a little. > It looks better to use some patch subject eg below: "Remove unnecessary variables in kexec_purgatory_setup_sechdrs" > Signed-off-by: Philipp Rudo <prudo@xxxxxxxxxxxxxxxxxx> > --- > kernel/kexec_file.c | 34 ++++++++++++---------------------- > 1 file changed, 12 insertions(+), 22 deletions(-) > > diff --git a/kernel/kexec_file.c b/kernel/kexec_file.c > index bb31a3b627c2..746b91e46e34 100644 > --- a/kernel/kexec_file.c > +++ b/kernel/kexec_file.c > @@ -724,12 +724,8 @@ static int kexec_purgatory_setup_kbuf(struct purgatory_info *pi, > static int kexec_purgatory_setup_sechdrs(struct purgatory_info *pi, > struct kexec_buf *kbuf) > { > - unsigned long curr_load_addr; > - unsigned long load_addr; > unsigned long bss_addr; > unsigned long offset; > - unsigned char *buf_addr; > - unsigned char *src; > Elf_Shdr *sechdrs; > int i; > > @@ -762,20 +758,18 @@ static int kexec_purgatory_setup_sechdrs(struct purgatory_info *pi, > sechdrs[i].sh_offset; > } > > - /* Load SHF_ALLOC sections */ > - buf_addr = kbuf->buffer; > - load_addr = curr_load_addr = kbuf->mem; > - bss_addr = load_addr + kbuf->bufsz; > + offset = 0; > + bss_addr = kbuf->mem + kbuf->bufsz; > kbuf->image->start = pi->ehdr->e_entry; > > for (i = 0; i < pi->ehdr->e_shnum; i++) { > unsigned long align; > + void *src, *dst; > > if (!(sechdrs[i].sh_flags & SHF_ALLOC)) > continue; > > align = sechdrs[i].sh_addralign; > - > if (sechdrs[i].sh_type == SHT_NOBITS) { > bss_addr = ALIGN(bss_addr, align); > sechdrs[i].sh_addr = bss_addr; > @@ -783,31 +777,27 @@ static int kexec_purgatory_setup_sechdrs(struct purgatory_info *pi, > continue; > } > > - curr_load_addr = ALIGN(curr_load_addr, align); > - offset = curr_load_addr - load_addr; > - /* We already modifed ->sh_offset to keep src addr */ > - src = (char *)sechdrs[i].sh_offset; > - memcpy(buf_addr + offset, src, sechdrs[i].sh_size); > - > + offset = ALIGN(offset, align); > if (sechdrs[i].sh_flags & SHF_EXECINSTR && > pi->ehdr->e_entry >= sechdrs[i].sh_addr && > pi->ehdr->e_entry < (sechdrs[i].sh_addr > + sechdrs[i].sh_size)) { > kbuf->image->start -= sechdrs[i].sh_addr; > - kbuf->image->start += curr_load_addr > + kbuf->image->start += kbuf->mem + offset; > } > > - /* Store load address and source address of section */ > - sechdrs[i].sh_addr = curr_load_addr; > + src = (void *)sechdrs[i].sh_offset; > + dst = pi->purgatory_buf + offset; > + memcpy(dst, src, sechdrs[i].sh_size); > + > + sechdrs[i].sh_addr = kbuf->mem + offset; > > /* > * This section got copied to temporary buffer. Update > * ->sh_offset accordingly. > */ > - sechdrs[i].sh_offset = (unsigned long)(buf_addr + offset); > - > - /* Advance to the next address */ > - curr_load_addr += sechdrs[i].sh_size; > + sechdrs[i].sh_offset = (unsigned long)dst; > + offset += sechdrs[i].sh_size; > } > > return 0; > -- > 2.13.5 > Thanks Dave -- To unsubscribe from this list: send the line "unsubscribe linux-s390" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html