News
[$] Locking down hibernation for the winter
The Brief
- LWN.net reports that kernel changes lock down hibernation on Linux.
- Hibernation writes the contents of memory to disk before the system shuts down.
- Resuming reads that saved data back into memory so the kernel can continue where it left off.
Why it matters
Systems that use hibernation may see changed resume behaviour once these kernel changes land; the available source excerpt is truncated, so the exact restrictions are not stated here.
Who’s affected
- Linux users and administrators who rely on hibernation
When a computer hibernates, the kernel writes the contents of memory to disk and then shuts the system down. Resuming from hibernation involves reading that data back into memory, and then having the kernel pick up where it left off. Unfortunately, the kernel does not have any…