allocate_ondemand can be used to allocate addresse space. Primarily
used for mapping MFNs, it can also be used e.g. to map grant refs.
Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
This adds fixes to the stub domain build into compiling Ian Jackson's
qemu-xen. The most notable change is that mini-os headers now
#include each other through a mini-os/ prefix, so that we can turn all
-I into -isystem and still be sure that we include Mini-OS headers
(and not qemu's console.h or blktaplib's list.h for instance...).
Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
markers at its beginning and end, and then link with mini-os.
That permits to stick a bit more to upstream qemu.
Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
- Move PAGE_SIZE and STACK_SIZE into __PAGE_SIZE and __STACK_SIZE in
arch_limits.h so as to permit getting them from there without
pulling all the internal Mini-OS defines.
- Setup a xen-elf cross-compilation environment in stubdom/cross-root
- Add a POSIX layer on top of Mini-OS by linking against the newlib C
library and lwIP, and implementing the Unixish part in mini-os/lib/sys.c
- Cross-compile zlib and libpci too.
- Add an xs.h-compatible layer on top of Mini-OS' xenbus.
- Cross-compile libxc with an additional xc_minios.c and a few things
disabled.
- Cross-compile ioemu with an additional block-vbd, but without sound,
tpm and other details. A few hacks are needed:
- Align ide and scsi buffers at least on sector size to permit
direct transmission to the block backend. While we are at it, just
page-align it to possibly save a segment. Also, limit the scsi
buffer size because of limitations of the block paravirtualization
protocol.
- Allocate big tables dynamically rather that letting them go to
bss: when Mini-OS gets installed in memory, bss is not lazily
allocated, and doing so during Mini-OS is unnecessarily trick while
we can simply use malloc.
- Had to change the Mini-OS compilation somehow, so as to export
Mini-OS compilation flags to the Makefiles of libxc and ioemu.
Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
contiguous frames, or the same frame several times, aligned, from
another domain, with specific protection, and with potential
failures.
Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
arch/x86/mm.c and arch/x86/sched.c. Header files were also refactored:
arch specific code got moved to include/x86/arch_mm.h and
include/x86/sched_mm.h.
Signed-off-by: Dietmar Hahn <dietmar.hahn@fujitsu-siemens.com>
Signed-off-by: Grzegorz Milos <gm281@cam.ac.uk>
1. Make Mini-OS start from 0x0.
2. Fixes the pagetable builder to handle half full, but already mapped
pt frames.=20
3. Add a bounds check to ensure than Mini-OS does not try to use Xen
virtual space.
Signed-off-by: Grzegorz Milos <gm281@cam.ac.uk>
Signed-off-by: Aravindh Puthiyaparambil
<aravindh.puthiyaparambil@unisys.com>
a) 64-bit switch_to scheduler macro (by Aravindh Puthiyaparambil)
b) implements 64-bit hypervisor_callback
c) fixes thread creation issues (thread_starter used to perform
initialisation)
Signed-off-by: Grzegorz Milos <gm281@cam.ac.uk>
to simplify the porting. 64 bit version of Mini-os now compiles, but does not work
because of the pagetables and some bits of scheduler not being written.
Signed-off-by: Grzegorz Milos <gm281@cam.ac.uk>
