Create two new variables called APPEND_ and PREPEND_ to add compile
flags at the beginning or at the end of the search path.
Added a new semantic for user defined compile flags, here is the list
of possible options:
PREPEND_LIB: add libraries to the search path before xen
(before xen installation folders).
PREPEND_INCLUDES: add headers to the search path before xen
(before xen installation folders).
APPEND_LIB: add libraries to the search path at the end
(after all xen installation folders have been added).
APPEND_INCLUDES: add libraries to the search path at the end
(after all xen installation folders have been added).
EXTRA_INCLUDES and EXTRA_LIB can still be used, and they will have the
same effect as PREPEND_INCLUDES and PREPEND_LIB.
Signed-off-by: Roger Pau Monne <roger.pau@entel.upc.edu>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
Up to now a single ring buffer was used for mem_share, xenpaging and
xen-access. Each helper would have to cooperate and pull only its own
requests from the ring. Unfortunately this was not implemented. And
even if it was, it would make the whole concept fragile because a crash
or early exit of one helper would stall the others.
What happend up to now is that active xenpaging + memory_sharing would
push memsharing requests in the buffer. xenpaging is not prepared for
such requests.
This patch creates an independet ring buffer for mem_share, xenpaging
and xen-access and adds also new functions to enable xenpaging and
xen-access. The xc_mem_event_enable/xc_mem_event_disable functions will
be removed. The various XEN_DOMCTL_MEM_EVENT_* macros were cleaned up.
Due to the removal the API changed, so the SONAME will be changed too.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Acked-by: Tim Deegan <tim@xen.org>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed-by: Tim Deegan <tim@xen.org>
Several places include it in CFLAGS even though it is never defined. A
few others use it as nothing more than a gathering point for
CFLAGS. Get rid of it.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
Tested by forcing --as-needed via tools/Rules.mk but this is included
since the intention is simply to support diustros which default to
--as-needed, not to enable it everywhere.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
Otherwise make can search the path relative to certain standard paths
such as /usr/include (e.g., the line '-include $(XEN_ROOT)/.config' in
Config.mk suffers from this).
Signed-off-by: Keir Fraser <keir@xen.org>
* Creates HVMOPs for setting and getting memory access. The hypercalls
can set individual pages or the default access for new/refreshed
pages.
* Added functions to libxc to access these hypercalls.
Signed-off-by: Joe Epstein <jepstein98@gmail.com>
Reviewed-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Acked-by: Keir Fraser <keir@xen.org>
Acked-by: Tim Deegan <Tim.Deegan@citrix.com>
Attached patch makes libxc build again on NetBSD after the recent rework.
[ Modified by iwj:
I changed the name of the new make variable from LIBDL to DLOPEN_LIBS.
The latter conforms to the naming scheme for similar variables found
in config/*.mk - PTHREAD_LIBS et al.
Also I moved the setting of the variable to -dl from Linux to StdGNU
(which makes it apply more widely) and also added it to SunOS.mk
(based on pure guesswork). ]
Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Resolves build error:
/usr/bin/ld: xenctrl_osdep_ENOSYS.o: relocation R_X86_64_32
against `a local symbol' can not be used when making a shared
object; recompile with -fPIC
xenctrl_osdep_ENOSYS.o: could not read symbols: Bad value
collect2: ld returned 1 exit status
Clean up object files correctly too.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
This helps ensure that the osdep abstraction is complete by
allowing us to avoid including xc_private.h.
All the other OS backends could benefit from the same treatment but
since I cannot compile test I did not do this.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson.citrix.com>
Add a dummy backend which always returns ENOSYS. Mainly as a compile
time testbed rather than because it is a useful backend.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson.citrix.com>
This patch introduces the basic infrastructure and uses it for open
and close operations on privcmd, evtchn and gnttab devices.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson.citrix.com>
They simply make hypercalls and perform other operations via the
abstract interface. Create xc_gnttab.c and move those functions there.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Christoph Egger <Christoph.Egger@amd.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
(Modified version of this patch, with updated #includes in
xc_hcall_buf.c to fix stubdomain build.)
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
It has been unused since 21732:eb34666befcc. There was no response to
my RFC regarding its removal
http://marc.info/?l=xen-devel&m=128170404422822 and unfortunately we
have not been able to trace down all copyright holders of this code
for the purposes of relicensing libxc.
The code will be available in mercurial if we need to retrieve it in
the future.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
It has been unused since 21732:eb34666befcc.
Removing the include of sys/ptrace.h and threaddb.h exposed a few
places which were using time(2) or gettimeofday(2) without including
time.h or sys/time.h respectively and were relying on an include.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Linker command lines are order-sensitive.
Move linker options -Lfoo -lfoo from LDFLAGS to LDLIBS and place this new
variable after the objects to link. This resolves build errors in xenpagin
and blktap with recent toolchains.
rename SHLIB_CFLAGS to SHLIB_LDFLAGS
rename LDFLAGS_* to LDLIBS_*
move LDFLAGS usage after CFLAGS in CC calls
remove stale comments in xenpaging Makefile
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
The order of objects and linked libraries is important with recent
toolchain when --as-needed is used.
Introduce new variable COMPRESSION_LIBS and place it at the end of cc
commandline options. Without this change, symbols in libbzip2 are not
found when building with openSuSE 11.2 and newer.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
We provide a new header file "xentoollog.h" which defines an interface
that libraries and applications can use for logging. This avoids
having to wrap each library's log callbacks up, massage arguments to
log callbacks, and so on.
The library's .o files are within libxc to avoid having to create a
separate lib*.a, but callers do not need to #include xenctrl.h and it
should be regarded as a separate API.
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Replace all calls to xc_map_foreign_batch() where the caller doesn't
look at the passed in array to check for errors by calls to
xc_map_foreign_pages(). Replace all remaining calls by such to the
newly introduced xc_map_foreign_bulk().
As a sideband modification (needed while writing the patch to ensure
they're unused) eliminate unused parameters to
uncanonicalize_pagetable() and xc_map_foreign_batch_single(). Also
unmap live_p2m_frame_list earlier in map_and_save_p2m_table(),
reducing the peak amount of virtual address space required.
All supported OSes other than Linux continue to use the old ioctl for
the time being.
Also change libxc's MAJOR to 4.0 to reflect the API change.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
- Fix an error message in xc_try_bzip2_decode()
- Check library installation on demand using a Makefile function,
rather than generating a dependency file. Cleaner and avoids a race
on generating the dep file.
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
1. Create an empty dep file if neither lib is installed
2. Forcibly disable support for libs if building minios
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Recent upstream kernels can be compressed using either gzip,
bzip2, or LZMA. However, the PV kernel loader in Xen currently only
understands gzip, and will fail on the other two types. The attached
patch implements kernel decompression for gzip, bzip2, and LZMA so
that kernels compressed with any of these methods can be launched.
Signed-off-by: Chris Lalancette <clalance@redhat.com>
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
On ia64, xen-unstable 19698:f72d26c00002 cannot be built:
../../tools/libxc/libxenguest.so: undefined reference to
`xc_core_arch_map_p2m_writable'
../../tools/libxc/libxenguest.so: undefined reference to `xc_map_m2p'
Because xc_offline_page.c requires xc_map_m2p() in xc_domain_save.c,
xc_offline_page.c must be compiled only if CONFIG_MIGRATE=3Dy.
Signed-off-by: KUWAMURA Shin'ya <kuwa@jp.fujitsu.com>
Tmem, when called from a tmem-capable (paravirtualized) guest, makes
use of otherwise unutilized ("fallow") memory to create and manage
pools of pages that can be accessed from the guest either as
"ephemeral" pages or as "persistent" pages. In either case, the pages
are not directly addressible by the guest, only copied to and fro via
the tmem interface. Ephemeral pages are a nice place for a guest to
put recently evicted clean pages that it might need again; these pages
can be reclaimed synchronously by Xen for other guests or other uses.
Persistent pages are a nice place for a guest to put "swap" pages to
avoid sending them to disk. These pages retain data as long as the
guest lives, but count against the guest memory allocation.
Tmem pages may optionally be compressed and, in certain cases, can be
shared between guests. Tmem also handles concurrency nicely and
provides limited QoS settings to combat malicious DoS attempts.
Save/restore and live migration support is not yet provided.
Tmem is primarily targeted for an x86 64-bit hypervisor. On a 32-bit
x86 hypervisor, it has limited functionality and testing due to
limitations of the xen heap. Nearly all of tmem is
architecture-independent; three routines remain to be ported to ia64
and it should work on that architecture too. It is also structured to
be portable to non-Xen environments.
Tmem defaults off (for now) and must be enabled with a "tmem" xen boot
option (and does nothing unless a tmem-capable guest is running). The
"tmem_compress" boot option enables compression which takes about 10x
more CPU but approximately doubles the number of pages that can be
stored.
Tmem can be controlled via several "xm" commands and many interesting
tmem statistics can be obtained. A README and internal specification
will follow, but lots of useful prose about tmem, as well as Linux
patches, can be found at http://oss.oracle.com/projects/tmem .
Signed-off-by: Dan Magenheimer <dan.magenheimer@oracle.com>
The suspend event channel functions are arch independent code
which xc_save uses.
The changeset of 19382:a5f497f02e34 cause link error on ia64.
This patch moves the functions into arch common file from
x86 specific file xc_domain_save.c
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
In c/s 19009 an incompatible change was made to the ABI of libelf-*,
which are included in libxenctrl and libxenguest. To avoid client
programs (such as python/lowlevel/xc/xc.so) picking up a wrong
version and perhaps crashing, the soname should be changed.
I have chosen the version number 3.4 as xen-unstable is currently the
pre-3.4 branch. I assume we don't care about API/ABI stability within
an unstable branch.
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
If you use -MMD -MF then the correct .o filename is written to the
.*.d file as the compiler driver arranges everything. This was done
in 19010:275abe1c5d24 for the hypervisor.
In this patch we do the same elsewhere in the xen-unstable tree,
particularly tools/. Specifically:
* Change tools/Rules.mk to add -MMD -MF ... to CFLAGS and set DEPS.
* Remove -Wp,-MD... from every other Makefile
* Remove setting of DEPS from every other Makefile
* Ensure that every Makefile says -include $(DEPS)
* Ensure that every Makefile's clean target removes $(DEPS)
Some Makefiles were already halfway there, but often for a different
variable name eg PROG_DEP. The variable name is now standardised in
Rules.mk as DEPS.
I have done a test build with this change, on Debian etch.
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Sampling and collecting dynamic Px statistic data, including
Px state value, Px count, Px residency time, Px transition
matrix, etc. Provide Px statistic data to user through libxc.
Signed-off-by: Liu Jinsong <jinsong.liu@intel.com>
CPUID's replies are now pre-calculated in libxc and given to the
hypervisor via a new domctl.
There are two parts to this feature:
- We can overwrite cpuid's replies.
- We can check that a vm is compatible with a host's processor.
Signed-off-by: Jean Guyader <jean.guyader@eu.citrix.com>
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Roger Pau Monne
Olaf Hering
Ian Campbell
Keir Fraser
Joe Epstein
Christoph Egger
Stefano Stabellini
Keir Fraser