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kho: rename kho_scratch= commandline parameter to kho_bootmem=

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KHO now no longer uses "scratch" to describe the memory areas passed by
previous kernel. Instead, it calls them boot memory, or bootmem in
short. Rename the kho_scratch= commandline parameter to reflect this
terminology change.

Signed-off-by: Pratyush Yadav (Google) <pratyush@kernel.org>
Link: https://patch.msgid.link/20260922041321.233986-5-pratyush@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
This commit is contained in:
Pratyush Yadav (Google) 2026-09-22 06:13:16 +02:00 committed by Mike Rapoport
parent 8ebd2eb87f
commit 10823ced2f
3 changed files with 6 additions and 6 deletions
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2
Documentation/admin-guide/kernel-parameters.txt
View File

@ -3031,7 +3031,7 @@ Kernel parameters
"0" | "off" | "n" - kexec handover is disabled
"1" | "on" | "y" - kexec handover is enabled
kho_scratch= [KEXEC,EARLY]
kho_bootmem= [KEXEC,EARLY]
Format: ll[KMG],mm[KMG],nn[KMG] | nn%
Defines the size of the KHO boot memory region. The

4
Documentation/admin-guide/mm/kho.rst
View File

@ -20,8 +20,8 @@ need to enable if you would like to preserve their respective state across
kexec.
To use KHO, please boot the kernel with the ``kho=on`` command line
parameter. You may use ``kho_scratch`` parameter to define size of the
boot memory regions. For example ``kho_scratch=16M,512M,256M`` will reserve a
parameter. You may use ``kho_bootmem`` parameter to define size of the
boot memory regions. For example ``kho_bootmem=16M,512M,256M`` will reserve a
16 MiB low memory bootmem area, a 512 MiB global bootmem region, and 256 MiB
per NUMA node bootmem regions on boot.

6
kernel/liveupdate/kexec_handover.c
View File

@ -671,12 +671,12 @@ unsigned int kho_bootmem_cnt;
* The bootmem areas are scaled by default as percent of memory allocated from
* memblock. A user can override the scale with command line parameter:
*
* kho_scratch=N%
* kho_bootmem=N%
*
* It is also possible to explicitly define size for a lowmem, a global and
* per-node bootmem areas:
*
* kho_scratch=l[KMG],n[KMG],m[KMG]
* kho_bootmem=l[KMG],n[KMG],m[KMG]
*
* The explicit size definition takes precedence over scale definition.
*/
@ -751,7 +751,7 @@ static int __init kho_parse_bootmem_size(char *p)
return 0;
}
early_param("kho_scratch", kho_parse_bootmem_size);
early_param("kho_bootmem", kho_parse_bootmem_size);
static void __init bootmem_size_update(void)
{