Thank you so much for the details you provided. We are working with our BIOS vendors to resolve the problem.
-Rajesh -----Original Message----- From: Dan Williams [mailto:dan.j.willi...@intel.com] Sent: Friday, June 19, 2020 8:20 PM To: Ananth, Rajesh Cc: linux-nvdimm Subject: Re: Question on PMEM regions (Linux 4.9 Kernel & above) SMART Modular Security Checkpoint: External email. Please make sure you trust this source before clicking links or opening attachments. On Fri, Jun 19, 2020 at 7:02 PM Ananth, Rajesh <rajesh.ana...@smartm.com> wrote: > > We used the Ubuntu 18.04 to get the "acpdump" outputs (This is the only > complete package distribution we have. Otherwise, we use mainly the built > Kernels). The NFIT data is all valid, but somehow it is printing the "@ > addresss" at the beginning as zeros. > > ============================= acpdump -n NFIT > ======================================== > > NFIT @ 0x0000000000000000 <<<< DON'T KNOW WHY. That's fine, acpixtract was still able to convert it... I see this from disassembling it: acpixtract -s NFIT nfit.txt iasl -d nft.dat cat nfit.dsl [000h 0000 4] Signature : "NFIT" [NVDIMM Firmware Interface Table] [004h 0004 4] Table Length : 000001A4 [008h 0008 1] Revision : 01 [009h 0009 1] Checksum : 83 [00Ah 0010 6] Oem ID : "ALASKA" [010h 0016 8] Oem Table ID : "A M I " [018h 0024 4] Oem Revision : 00000002 [01Ch 0028 4] Asl Compiler ID : "INTL" [020h 0032 4] Asl Compiler Revision : 20091013 [024h 0036 4] Reserved : 00000000 [028h 0040 2] Subtable Type : 0000 [System Physical Address Range] [02Ah 0042 2] Length : 0038 [02Ch 0044 2] Range Index : 0001 [02Eh 0046 2] Flags (decoded below) : 0002 Add/Online Operation Only : 0 Proximity Domain Valid : 1 [030h 0048 4] Reserved : 00000000 [034h 0052 4] Proximity Domain : 00000000 [038h 0056 16] Region Type GUID : 66F0D379-B4F3-4074-AC43-0D3318B78CDB [048h 0072 8] Address Range Base : 0000004080000000 [050h 0080 8] Address Range Length : 0000000400000000 [058h 0088 8] Memory Map Attribute : 0000000000008008 [..] [0E0h 0224 2] Subtable Type : 0000 [System Physical Address Range] [0E2h 0226 2] Length : 0038 [0E4h 0228 2] Range Index : 0002 [0E6h 0230 2] Flags (decoded below) : 0002 Add/Online Operation Only : 0 Proximity Domain Valid : 1 [0E8h 0232 4] Reserved : 00000000 [0ECh 0236 4] Proximity Domain : 00000000 [0F0h 0240 16] Region Type GUID : 66F0D379-B4F3-4074-AC43-0D3318B78CDB [100h 0256 8] Address Range Base : 0000004480000000 [108h 0264 8] Address Range Length : 0000000400000000 [110h 0272 8] Memory Map Attribute : 0000000000008008 ...so Linux is being handed an NFIT with 2 regions. So the 4.16 interpretation looks correct to me. Are you sure you only changed kernel versions and did not also do a BIOS update? If not the 4.7 result looks like a bug for this NFIT. _______________________________________________ Linux-nvdimm mailing list -- linux-nvdimm@lists.01.org To unsubscribe send an email to linux-nvdimm-le...@lists.01.org
