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| author | Vasily Gorbik <gor@linux.ibm.com> | 2019-02-27 16:52:42 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2019-03-01 08:00:41 +0100 |
| commit | b5e804598d594934407a1a8548d7b65341fe2617 (patch) | |
| tree | db43a2962d8f9c57fad49589ed450fedc5ce20fd /arch/s390/boot/startup.c | |
| parent | s390: clean up redundant facilities list setup (diff) | |
| download | linux-b5e804598d594934407a1a8548d7b65341fe2617.tar.xz linux-b5e804598d594934407a1a8548d7b65341fe2617.zip | |
s390: allow overriding facilities via command line
Add "facilities=" command line option which allows to override
facility bits returned by stfle. The main purpose of that is debugging
aids which allows to test specific kernel behaviour depending on
specific facilities presence. It also affects CPU alternatives.
"facilities=" command line option format is comma separated list of
integer values to be additionally set or cleared (if value is starting
with "!"). Values ranges are also supported. e.g.:
facilities=!130-160,159,167-169
Reviewed-by: Heiko Carstens <heiko.carstens@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/startup.c')
| -rw-r--r-- | arch/s390/boot/startup.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/boot/startup.c b/arch/s390/boot/startup.c index 4d441317cdeb..bdfc5549a299 100644 --- a/arch/s390/boot/startup.c +++ b/arch/s390/boot/startup.c @@ -53,6 +53,7 @@ void startup_kernel(void) sclp_early_read_info(); store_ipl_parmblock(); setup_boot_command_line(); + parse_boot_command_line(); setup_memory_end(); detect_memory(); if (!IS_ENABLED(CONFIG_KERNEL_UNCOMPRESSED)) { |