Re: [PATCH 0/2 -mm] kexec based hibernation -v5

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Huang, Ying wrote:
The hibernation procedure with the patch set is as follow:

1. Boot a kernel A

2. Work under kernel A

3. Kexec another kernel B (crash dump enabled) in kernel A.

4. Save the memory image of kernel A through crash dump (such as "cp
   /proc/vmcore ~"). Save the "jump back entry".

Doesn't this also save the memory of kernel B?

5. Shutdown or reboot


The restore process with the patch set is as follow:

1. Boot a kernel C (crash dump enabled), the memory area used by
   kernel C must be a subset of memory area used by kernel B.

Why is a third kernel needed? Why can't kernel B be used for this as well? In fact, if kernel A has been compiled to be relocatable and crash dump enabled, why wouldn't it suffice for all 3 instances?


_______________________________________________
linux-pm mailing list
linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx
https://lists.linux-foundation.org/mailman/listinfo/linux-pm

[Index of Archives]     [Linux ACPI]     [Netdev]     [Ethernet Bridging]     [Linux Wireless]     [CPU Freq]     [Kernel Newbies]     [Fedora Kernel]     [Security]     [Linux for Hams]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux RAID]     [Linux Admin]     [Samba]

  Powered by Linux