@@ -18,7 +18,7 @@ memory image to a dump file on the local disk, or across the network to
a remote system.
Kdump and kexec are currently supported on the x86, x86_64, ppc64, ia64,
-s390x and arm architectures.
+s390x, arm and arm64 architectures.
When the system kernel boots, it reserves a small section of memory for
the dump-capture kernel. This ensures that ongoing Direct Memory Access
@@ -249,6 +249,12 @@ Dump-capture kernel config options (Arch Dependent, arm)
AUTO_ZRELADDR=y
+Dump-capture kernel config options (Arch Dependent, arm64)
+----------------------------------------------------------
+
+1) Currently, kvm will not be enabled on the dump-capture kernel even
+ if it is configured.
+
Extended crashkernel syntax
===========================
@@ -305,6 +311,8 @@ Boot into System Kernel
kernel will automatically locate the crash kernel image within the
first 512MB of RAM if X is not given.
+ On arm64, use "crashkernel=Y[@X]". Note that the start address of
+ the kernel, X if explicitly specified, must be aligned to 2MiB (0x200000).
Load the Dump-capture Kernel
============================
@@ -327,6 +335,8 @@ For s390x:
- Use image or bzImage
For arm:
- Use zImage
+For arm64:
+ - Use vmlinux or Image
If you are using a uncompressed vmlinux image then use following command
to load dump-capture kernel.
@@ -370,6 +380,9 @@ For s390x:
For arm:
"1 maxcpus=1 reset_devices"
+For arm64:
+ "1 maxcpus=1 reset_devices"
+
Notes on loading the dump-capture kernel:
* By default, the ELF headers are stored in ELF64 format to support