From: Pingfan Liu <piliu@xxxxxxxxxx>
The default size reserved for crashkernel=,low is decided by the macro
DEFAULT_CRASH_KERNEL_LOW_SIZE, which is based on arch.
Signed-off-by: Pingfan Liu <piliu@xxxxxxxxxx>
Cc: Baoquan He <bhe@xxxxxxxxxx>
Cc: Dave Young <dyoung@xxxxxxxxxx>
To: kexec@xxxxxxxxxxxxxxxxxxx
To: linux-doc@xxxxxxxxxxxxxxx
---
Documentation/admin-guide/kdump/kdump.rst | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/Documentation/admin-guide/kdump/kdump.rst b/Documentation/admin-guide/kdump/kdump.rst
index 5762e7477a0c..a021ff155012 100644
--- a/Documentation/admin-guide/kdump/kdump.rst
+++ b/Documentation/admin-guide/kdump/kdump.rst
@@ -310,8 +310,9 @@ crashkernel syntax
region above 4G, low memory under 4G is needed in this case. There are
three ways to get low memory:
- 1) Kernel will allocate at least 256M memory below 4G automatically
- if crashkernel=Y,low is not specified.
+ 1) Kernel will allocate a chunk of default size memory, which is based on
+ architecture, below 4G automatically if crashkernel=Y,low is not
+ specified.
2) Let user specify low memory size instead.
3) Specified value 0 will disable low memory allocation::
--
2.31.1
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