[PATCH] Documentation: kdump: Clarify the default size of memory reserved by crashkernel low

[Pingfan Liu]

From: Pingfan Liu <piliu at redhat.com>

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 at redhat.com>
Cc: Baoquan He <bhe at redhat.com>
Cc: Dave Young <dyoung at redhat.com>
To: kexec at lists.infradead.org
To: linux-doc at vger.kernel.org
---
 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