Re: [PATCH 3/4] nvme-pci: add device coredump support

From: Minwoo Im
Date: Sat May 04 2019 - 10:46:52 EST


On 5/4/19 11:38 PM, Minwoo Im wrote:
On 5/4/19 11:26 PM, Akinobu Mita wrote:
2019å5æ4æ(å) 19:04 Minwoo Im <minwoo.im.dev@xxxxxxxxx>:

+ÂÂÂÂ { NVME_REG_INTMS,ÂÂÂÂÂÂ "intms",ÂÂÂÂÂÂÂ 32 },
+ÂÂÂÂ { NVME_REG_INTMC,ÂÂÂÂÂÂ "intmc",ÂÂÂÂÂÂÂ 32 },
+ÂÂÂÂ { NVME_REG_CC,ÂÂÂÂÂÂÂÂÂ "cc",ÂÂÂÂÂÂÂÂÂÂ 32 },
+ÂÂÂÂ { NVME_REG_CSTS,ÂÂÂÂÂÂÂ "csts",ÂÂÂÂÂÂÂÂ 32 },
+ÂÂÂÂ { NVME_REG_NSSR,ÂÂÂÂÂÂÂ "nssr",ÂÂÂÂÂÂÂÂ 32 },
+ÂÂÂÂ { NVME_REG_AQA,ÂÂÂÂÂÂÂÂ "aqa",ÂÂÂÂÂÂÂÂÂ 32 },
+ÂÂÂÂ { NVME_REG_ASQ,ÂÂÂÂÂÂÂÂ "asq",ÂÂÂÂÂÂÂÂÂ 64 },
+ÂÂÂÂ { NVME_REG_ACQ,ÂÂÂÂÂÂÂÂ "acq",ÂÂÂÂÂÂÂÂÂ 64 },
+ÂÂÂÂ { NVME_REG_CMBLOC,ÂÂÂÂÂ "cmbloc",ÂÂÂÂÂÂ 32 },
+ÂÂÂÂ { NVME_REG_CMBSZ,ÂÂÂÂÂÂ "cmbsz",ÂÂÂÂÂÂÂ 32 },

If it's going to support optional registers also, then we can have
BP-related things (BPINFO, BPRSEL, BPMBL) here also.

I'm going to change the register dump in binary format just like
'nvme show-regs -o binary' does. So we'll have registers from 00h to 4Fh.


Got it.

And now I can see those two commands `nvme show-regs` and
`nvme show-regs -o binary` have different results for the register
range. The binary output covers just 0x50 size, but it shows all the
registers including BP-related things in normal && json format.

Anyway, I'll prepare a patch for nvme-cli to support binary output
format to cover BP things also.

Thanks, for your reply.

My bad, I misunderstood what you have said above. Please ignore
what I mentioned. BP things are located from 40h. to 4Fh.

Sorry for making noises here. ;)