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| author | Sascha Silbe <silbe@linux.vnet.ibm.com> | 2016-07-04 17:16:47 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2016-08-08 15:41:31 +0200 |
| commit | bf47dc572aaf53c3f2311c71e03ec01be3131fd6 (patch) | |
| tree | 199076746e7013463f782b78dcfa1b86fb463986 /arch/s390/kernel | |
| parent | Linux 4.8-rc1 (diff) | |
| download | linux-bf47dc572aaf53c3f2311c71e03ec01be3131fd6.tar.xz linux-bf47dc572aaf53c3f2311c71e03ec01be3131fd6.zip | |
s390: clarify compressed image code path
The way the decompressor is hooked into the start-up code is rather
subtle, with a mix of multiply-defined symbols and hardcoded address
literals. Add some comments at the junction points to clarify how it
works.
Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel')
| -rw-r--r-- | arch/s390/kernel/head.S | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/s390/kernel/head.S b/arch/s390/kernel/head.S index 56e4d8234ef2..4431905f8cfa 100644 --- a/arch/s390/kernel/head.S +++ b/arch/s390/kernel/head.S @@ -309,7 +309,9 @@ ENTRY(startup_kdump) l %r15,.Lstack-.LPG0(%r13) ahi %r15,-STACK_FRAME_OVERHEAD brasl %r14,verify_facilities - /* Continue with startup code in head64.S */ +# For uncompressed images, continue in +# arch/s390/kernel/head64.S. For compressed images, continue in +# arch/s390/boot/compressed/head.S. jg startup_continue .Lstack: |