On 11/20/13 at 12:50pm, Vivek Goyal wrote: > This patch adds support for loading a kexec on panic (kdump) kernel usning > new system call. > +int load_crashdump_segments(struct kimage *image) > +{ > + unsigned long src_start, src_sz; > + unsigned long elf_addr, elf_sz; > + int ret; > + > + /* > + * Determine and load a segment for backup area. First 640K RAM > + * region is backup source > + */ > + > + ret = walk_system_ram_res(KEXEC_BACKUP_SRC_START, KEXEC_BACKUP_SRC_END, > + image, determine_backup_region); > + > + /* Zero of postive return values are ok */ ^ Here I guess it is "or". > + if (ret < 0) > + return ret; > + > + src_start = image->arch.backup_src_start; > + src_sz = image->arch.backup_src_sz; > + > + /* Add backup segment. */ > + if (src_sz) { > + ret = kexec_add_buffer(image, __va(src_start), src_sz, src_sz, > + PAGE_SIZE, 0, -1, 0, > + &image->arch.backup_load_addr); > + if (ret) > + return ret; > + } > +