----- Original Message ----- > kmem -m|-M is used for displaying information of all ksm pages or > some ksm pages for specified ksm stable tree node addresses > > for example: > crash> kmem -m > STABLE_NODE : ffff88083fc927e0 > PAGE : ffffea000e667998 > PHYSICAL ADDRESS: 41d475000 > > PID: 2967 MAPPING: 3 > > STABLE_NODE : ffff88083fc84a10 > PAGE : ffffea000e3dd5d8 > PHYSICAL ADDRESS: 411aad000 > > PID: 2967 MAPPING: 7 > > STABLE_NODE : ffff88041980dda8 > PAGE : ffffea000e335568 > PHYSICAL ADDRESS: 40eaab000 > > PID: 2967 MAPPING: 8 > ... > > STABLE_NODE : ffff880841ea43f8 > PAGE : ffffea000f62de38 > PHYSICAL ADDRESS: 465641000 > > PID: 2967 MAPPING: 729 > PID: 3017 MAPPING: 499 > > P.S. > This patch is based on the patch from Qiao(qiaonuohan@xxxxxxxxxxxxxx) > 0001-make-rbtree-manipulation-functions-global.patch > Because this patch also uses rb_tree operations. I cannot test this because all of my sample dumps either return: crash> kmem -m kmem: -m option not supported or applicable on this architecture or kernel crash> or: crash> kmem -m ksm may not be enabled crash> which, by the way, is not a very helpful error message. Do you have a reasonably-sized vmcore that I can download and test? Also, I have a question about the help message: crash> help kmem NAME kmem - kernel memory SYNOPSIS kmem [-f|-F|-p|-c|-C|-i|-s|-S|-v|-V|-n|-z|-o|-m|-M] [slab] [[-P] address] [-g [flags] DESCRIPTION ... [ cut ] ... -m displays information of ksm pages. -M same as -m, but also dumps virtual addresses that mapping the ksm pages. ... [ cut ] ... address when used with -m or -M, the address can be either a ksm stable tree node address, a page's physical address, or a page pointer, the information of the ksm page (if it is) is displayed. ... [ cut ] ... Display information of ksm pages: crash> kmem -m ffff88086f22eec0 ffff8803573964c0 STABLE_NODE : ffff88083fc927e0 PAGE : ffffea000e667998 PHYSICAL ADDRESS: 41d475000 PID: 2967 MAPPING: 3 STABLE_NODE : ffff88083fc84a10 PAGE : ffffea000e3dd5d8 PHYSICAL ADDRESS: 411aad000 PID: 2967 MAPPING: 7 STABLE_NODE : ffff88041980dda8 PAGE : ffffea000e335568 PHYSICAL ADDRESS: 40eaab000 PID: 2967 MAPPING: 8 ...... STABLE_NODE : ffff880841ea43f8 PAGE : ffffea000f62de38 PHYSICAL ADDRESS: 465641000 PID: 2967 MAPPING: 729 PID: 3017 MAPPING: 499 crash> Please tell me how the two address arguments ffff88086f22eec0 and ffff8803573964c0 have any relationship to the subsequent display? Dave -- Crash-utility mailing list Crash-utility@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/crash-utility