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Add the 64-bit processing support of the LoongArch architecture. For the time
being, the quick restart function(kexec) is supported. That is, the "kexec -l"
and "kexec -e" commands can be used normally.
At the same time, the crash dump function also supports, "kexec -p" operation
can be successfully performed, and the vmcore file can be generated.
I tested this on LoongArch 3A5000 machine and works as expected,
kexec:
$ sudo kexec -l /boot/vmlinux --reuse-cmdline
$ sudo kexec -e
kdump:
$ sudo kexec -p /boot/vmlinux-kdump --reuse-cmdline --append="nr_cpus=1"
# echo c > /proc/sysrq_trigger
Signed-off-by: Youling Tang <tangyouling@loongson.cn>
Signed-off-by: Simon Horman <horms@kernel.org>
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Normally vmlinux for arm64 is of ET_EXEC type, while if built with
CONFIG_RANDAMIZE_BASE (that is KASLR), it will be of ET_DYN type.
Meanwhile, physical address field of segments in vmlinux has actually
the same value as virtual address field.
Accordingly, in this case, it totally makes no sense to check for
validity of segments against physical memory ranges and, if necessary,
relocate them in elf_exec_load() on arm64.
This patch allows to unconditionally skip the check on arm64.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Signed-off-by: Simon Horman <horms@verge.net.au>
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When building in PPC64 little endian mode, the compiler is now using the
new ABI v2. Among other changes, this new ABI removes the function
descriptors and changes the way the TOC address is computed when entering a
C function.
The purgatory assembly part where the dot symbols are removed, and ELF
relocation code are impacted in this patch.
Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
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This patch adds kdump support for s390 to the kexec tool and enables the
"--load-panic" option. When loading the kdump kernel and ramdisk we add the
address of the crashkernel memory to the normal load address.
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
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- Initial import into git
- initial nbi image formage support
- ppc32 initial register setting fixes.
- gzipped multiboot file support
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