diff options
| author | Hari Bathini <hbathini@linux.ibm.com> | 2024-05-09 14:57:54 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2024-05-10 09:36:10 +0300 |
| commit | 683eab94da75bcf55a9c65e0c31d0529edebe86d (patch) | |
| tree | 709d2b7b19383de9c91841183e0e5111260e2ad7 /arch/powerpc/platforms/powernv | |
| parent | 78d5cc15fb7d1b2683f0baf418a9a870c02319fb (diff) | |
| download | linux-683eab94da75bcf55a9c65e0c31d0529edebe86d.tar.xz | |
powerpc/fadump: setup additional parameters for dump capture kernel
For fadump case, passing additional parameters to dump capture kernel
helps in minimizing the memory footprint for it and also provides the
flexibility to disable components/modules, like hugepages, that are
hindering the boot process of the special dump capture environment.
Set up a dedicated parameter area to be passed to the capture kernel.
This area type is defined as RTAS_FADUMP_PARAM_AREA. Sysfs attribute
'/sys/kernel/fadump/bootargs_append' is exported to the userspace to
specify the additional parameters to be passed to the capture kernel
Signed-off-by: Hari Bathini <hbathini@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240509115755.519982-3-hbathini@linux.ibm.com
Diffstat (limited to 'arch/powerpc/platforms/powernv')
| -rw-r--r-- | arch/powerpc/platforms/powernv/opal-fadump.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/powerpc/platforms/powernv/opal-fadump.c b/arch/powerpc/platforms/powernv/opal-fadump.c index 5a88d7efb48a..c9c1dfb35464 100644 --- a/arch/powerpc/platforms/powernv/opal-fadump.c +++ b/arch/powerpc/platforms/powernv/opal-fadump.c @@ -665,8 +665,10 @@ void __init opal_fadump_dt_scan(struct fw_dump *fadump_conf, u64 node) } } - fadump_conf->ops = &opal_fadump_ops; - fadump_conf->fadump_supported = 1; + fadump_conf->ops = &opal_fadump_ops; + fadump_conf->fadump_supported = 1; + /* TODO: Add support to pass additional parameters */ + fadump_conf->param_area_supported = 0; /* * Firmware supports 32-bit field for size. Align it to PAGE_SIZE |