From: Pingfan Liu <[email protected]> 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 <[email protected]> Cc: Baoquan He <[email protected]> Cc: Dave Young <[email protected]> To: [email protected] To: [email protected] --- 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 _______________________________________________ kexec mailing list [email protected] http://lists.infradead.org/mailman/listinfo/kexec
