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| author |   Gerald Schaefer <gerald.schaefer@de.ibm.com> | 2019-04-01 19:10:45 +0200 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2019-04-10 17:47:09 +0200 |
| commit | bf9921a9c15bad089c08b94c300a6cafa035a612 (patch) | |
| tree | dd69b006096cdae6c93cb892d892b00dc7e63e68 /arch/s390/boot/compressed/vmlinux.lds.S | |
| parent | s390/cpum_cf: Add support for CPU-MF SVN 6 (diff) | |
| download | linux-dev-bf9921a9c15bad089c08b94c300a6cafa035a612.tar.xz linux-dev-bf9921a9c15bad089c08b94c300a6cafa035a612.zip | |
s390: introduce .boot.preserved.data section
Introduce .boot.preserve.data section which is similar to .boot.data and
"shared" between the decompressor code and the decompressed kernel. The
decompressor will store values in it, and copy over to the decompressed
image before starting it. This method allows to avoid using pre-defined
addresses and other hacks to pass values between those boot phases.
Unlike .boot.data section .boot.preserved.data is NOT a part of init data,
and hence will be preserved for the kernel life time.
Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/boot/compressed/vmlinux.lds.S')
| -rw-r--r-- | arch/s390/boot/compressed/vmlinux.lds.S | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/boot/compressed/vmlinux.lds.S b/arch/s390/boot/compressed/vmlinux.lds.S index 7efc3938f595..1c8ef393c656 100644 --- a/arch/s390/boot/compressed/vmlinux.lds.S +++ b/arch/s390/boot/compressed/vmlinux.lds.S @@ -34,6 +34,7 @@ SECTIONS _edata = . ; } BOOT_DATA + BOOT_DATA_PRESERVED /* * uncompressed image info used by the decompressor it should match |