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zdev: Integrate firmware auto-configuration with initramfs-tools

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Add initramfs-tools scripts that apply firmware-provided I/O
configuration data as auto-configuration during boot. This way, all I/O
devices configured by DPM are automatically brought online without
further user interaction.

This mechanism is active by default. It can be deactivated by specifying
the following parameter on the kernel command line:

  rd.zdev=no-auto

Signed-off-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Peter Oberparleiter
2017-09-01 11:05:57 +02:00
committed by Jan Höppner
parent 3fb356ebd2
commit 3c5644ccfd
5 changed files with 130 additions and 0 deletions
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README.md
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@@ -271,6 +271,7 @@ This table lists additional build or install options:
| __COMPONENT__ | __OPTION__ | __TOOLS__ |
|----------------|:----------------:|:-------------------------------:|
| dracut | `HAVE_DRACUT` | zdev |
| initramfs-tools| `HAVE_INITRAMFS` | zdev |
The s390-tools build process uses "pkg-config" if available and hard-coded
compiler and linker options otherwise.