In Other BSDs for 2015/12/26

There’s some DragonFly links I snuck in here because why not?

Qemu fixes, and a bonus

A number of people have reported problems with qemu and DragonFly, both running locally and on a host.  It turns out to be a problem with the getcontext(), setcontext(), and swapcontext() functions, but Matthew Dillon fixed it in a way that doesn’t affect performance very much.

That apparently wasn’t good enough, so he added _quick versions of those same functions, so it became not just a fix, but an improvement.

In related qemu news: qemu-devel can use vknetd similar to a vkernel, now.

New DragonFly installer disk arrangement

The DragonFly installer has been modified to produce disk arrangements that will generally match between UFS and Hammer installs, plus directories where you usually don’t want Hammer history or backups (like /tmp or /usr/obj) are now under /build and null-mounted to where you’d expect, since null-mounting works transparently well on DragonFly.  Matthew Dillon has a note explaining the whole thing.