diff options
| author | Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com> | 2016-11-29 23:45:48 +1100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-11-30 23:14:59 +1100 |
| commit | ec2b9bfaac44ea889625a6b9473d33898b10d35f (patch) | |
| tree | abb247ab853ca78135948da2e30da525b4a5839f /arch/x86/kernel/crash.c | |
| parent | 60fe3910bb029e3671ce7ac080a7acb7e032b9e0 (diff) | |
| download | linux-ec2b9bfaac44ea889625a6b9473d33898b10d35f.tar.bz2 | |
kexec_file: Change kexec_add_buffer to take kexec_buf as argument.
This is done to simplify the kexec_add_buffer argument list.
Adapt all callers to set up a kexec_buf to pass to kexec_add_buffer.
In addition, change the type of kexec_buf.buffer from char * to void *.
There is no particular reason for it to be a char *, and the change
allows us to get rid of 3 existing casts to char * in the code.
Signed-off-by: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Acked-by: Dave Young <dyoung@redhat.com>
Acked-by: Balbir Singh <bsingharora@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/x86/kernel/crash.c')
| -rw-r--r-- | arch/x86/kernel/crash.c | 37 |
1 files changed, 19 insertions, 18 deletions
diff --git a/arch/x86/kernel/crash.c b/arch/x86/kernel/crash.c index 650830e39e3a..3741461c63a0 100644 --- a/arch/x86/kernel/crash.c +++ b/arch/x86/kernel/crash.c @@ -631,9 +631,9 @@ static int determine_backup_region(u64 start, u64 end, void *arg) int crash_load_segments(struct kimage *image) { - unsigned long src_start, src_sz, elf_sz; - void *elf_addr; int ret; + struct kexec_buf kbuf = { .image = image, .buf_min = 0, + .buf_max = ULONG_MAX, .top_down = false }; /* * Determine and load a segment for backup area. First 640K RAM @@ -647,43 +647,44 @@ int crash_load_segments(struct kimage *image) 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) { + if (image->arch.backup_src_sz) { + kbuf.buffer = &crash_zero_bytes; + kbuf.bufsz = sizeof(crash_zero_bytes); + kbuf.memsz = image->arch.backup_src_sz; + kbuf.buf_align = PAGE_SIZE; /* * Ideally there is no source for backup segment. This is * copied in purgatory after crash. Just add a zero filled * segment for now to make sure checksum logic works fine. */ - ret = kexec_add_buffer(image, (char *)&crash_zero_bytes, - sizeof(crash_zero_bytes), src_sz, - PAGE_SIZE, 0, -1, 0, - &image->arch.backup_load_addr); + ret = kexec_add_buffer(&kbuf); if (ret) return ret; + image->arch.backup_load_addr = kbuf.mem; pr_debug("Loaded backup region at 0x%lx backup_start=0x%lx memsz=0x%lx\n", - image->arch.backup_load_addr, src_start, src_sz); + image->arch.backup_load_addr, + image->arch.backup_src_start, kbuf.memsz); } /* Prepare elf headers and add a segment */ - ret = prepare_elf_headers(image, &elf_addr, &elf_sz); + ret = prepare_elf_headers(image, &kbuf.buffer, &kbuf.bufsz); if (ret) return ret; - image->arch.elf_headers = elf_addr; - image->arch.elf_headers_sz = elf_sz; + image->arch.elf_headers = kbuf.buffer; + image->arch.elf_headers_sz = kbuf.bufsz; - ret = kexec_add_buffer(image, (char *)elf_addr, elf_sz, elf_sz, - ELF_CORE_HEADER_ALIGN, 0, -1, 0, - &image->arch.elf_load_addr); + kbuf.memsz = kbuf.bufsz; + kbuf.buf_align = ELF_CORE_HEADER_ALIGN; + ret = kexec_add_buffer(&kbuf); if (ret) { vfree((void *)image->arch.elf_headers); return ret; } + image->arch.elf_load_addr = kbuf.mem; pr_debug("Loaded ELF headers at 0x%lx bufsz=0x%lx memsz=0x%lx\n", - image->arch.elf_load_addr, elf_sz, elf_sz); + image->arch.elf_load_addr, kbuf.bufsz, kbuf.bufsz); return ret; } |