在 2022/7/26 下午4:16, Xianting Tian 写道:
 在 2022/7/26 下午4:01, Conor.Dooley(a)microchip.com 写道:
> On 26/07/2022 08:54, tianxianting wrote:
>> 在 2022/7/26 上午1:13, Conor.Dooley(a)microchip.com 写道:
>>> That said, this does not apply to riscv/for-next:
>>> b4 shazam 20220725014539.1037627-1-xianting.tian(a)linux.alibaba.com
>>> Grabbing thread from 
>>>
lore.kernel.org/all/20220725014539.1037627-1-xianting.tian%40linux.alibab...
>>> Checking for newer revisions on 
https://lore.kernel.org/all/
>>> Analyzing 6 messages in the thread
>>> Checking attestation on all messages, may take a moment...
>>> ---
>>>     [PATCH v2 1/5] RISC-V: use __smp_processor_id() instead of 
>>> smp_processor_id()
>>>     [PATCH v2 2/5] RISC-V: Add arch_crash_save_vmcoreinfo support
>>>     [PATCH v2 3/5] riscv: Add modules to virtual kernel memory 
>>> layout dump
>>>     [PATCH v2 4/5] RISC-V: Fixup getting correct current pc
>>>     [PATCH v2 5/5] riscv: crash_core: Export kernel vm layout, 
>>> phys_ram_base
>>> ---
>>> Total patches: 5
>>> ---
>>> Applying: RISC-V: use __smp_processor_id() instead of 
>>> smp_processor_id()
>>> Applying: RISC-V: Add arch_crash_save_vmcoreinfo support
>>> Patch failed at 0002 RISC-V: Add arch_crash_save_vmcoreinfo support
>> patch 2 apply is OK for me, I don't know why you failed :(
>> Do you have more detals for this?
>>
> What did you apply it to? It does not apply for me to riscv/for-next:
> 
https://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git/log/?h=fo... 
>
 This 5 patches are based on the master branch of below git:
 
https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux.git 
 "git am 0002-RISC-V-Add-arch_crash_save_vmcoreinfo-support.patch" to 
 this git is ok for me.
 All is correct? 
I figured out the reason, there is one difference in 
arch/riscv/kernel/Makefile between riscv/for-next and torvalds/linux.
For riscv/for-next, in line 81 of arch/riscv/kernel/Makefile, it is:
     obj-$(CONFIG_KEXEC)        += kexec_relocate.o crash_save_regs.o 
machine_kexec.o
But for torvalds/linux, in line 81 of arch/riscv/kernel/Makefile, it is:
     obj-$(CONFIG_KEXEC_CORE)        += kexec_relocate.o 
crash_save_regs.o machine_kexec.o
torvalds/linux is newer than riscv/for-next,  commit 3a66a08759 
("RISC-V: kexec: Fix build error without CONFIG_KEXEC") added 
"CONFIG_KEXEC_CORE" for torvalds/linux, But riscv/for-next
doesn't contain the commit.
>
> Thanks,
> Conor.
>