On 06/23/16 at 05:54pm, Geoff Levand wrote: > From: AKASHI Takahiro <takahiro.akashi at linaro.org> > > This patch adds arch specific descriptions about kdump usage on arm64 > to kdump.txt. > > Signed-off-by: AKASHI Takahiro <takahiro.akashi at linaro.org> > --- > Documentation/kdump/kdump.txt | 15 ++++++++++++++- > 1 file changed, 14 insertions(+), 1 deletion(-) > > diff --git a/Documentation/kdump/kdump.txt b/Documentation/kdump/kdump.txt > index 88ff63d..5d6da09 100644 > --- a/Documentation/kdump/kdump.txt > +++ b/Documentation/kdump/kdump.txt > @@ -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 ~ Why square brackets here, is it different than other arch? Except for this, it looks good to me. Thanks Baoquan > + 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 > -- > 2.5.0 > > > > _______________________________________________ > kexec mailing list > kexec at lists.infradead.org > http://lists.infradead.org/mailman/listinfo/kexec
