Since the page mallocator returns va, make it return void *

Remove all the silly casts from calls to bmk_pgalloc

convert xen platform to use the bmk_pgalloc() interface

Don't free dev->nodename

It's no longer dynamically allocated.

Start introducing memory allocation arenas to bmk_memalloc.

Step 1: include information on who is allocation memory
in the memory allocation requests.

kill libc dependency from blkfront

use bmk_strtoul() instead of one leaked from libc

Add a minios_wait() macro.

It's for symmetry with minios_add_waiter(), so that we don't have
go editing a billion sites if we want to change bmk_sched().

xen/events: move notify_remote_via_evtchn to minios namespace

Signed-off-by: Wei Liu <liuw@liuw.name>

use bmk-core instead of stdio

Nuke fcntl.h dependencies from blkfront.

Simply define our own rd/wr identifiers.

change xen platform to use the scheduler interface from bmk-core

sensible layering drama, act 2

don't use libc malloc from the xen platform "kernel"

Separate bmk-common to bmk-base and bmk-core, mirroring the libs

This mechanical change makes it easy to look at the headers and determine
at which layer a file is, instead of having to wonder if some bmk-common
interface is provided by -base or -core.

sensible layering drama, act 1

Do not include errno.h in modules which do not run on top of libc.

Just for clarity: libc = NetBSD libc. We do not have any other libc
in the stack.

Move files into platform/xen

Prepares for the rumprun merge.