Bitmaps are used in save/restore, xenpaging and blktap2. Merge the code into a
private xc_bitops.h file. All users are single threaded, so locking is not an
issue. The array of bits is handled as volatile because the x86 save/restore
code passes the bitmap to the hypervisor which in turn modifies the bitmap.
blktap2 uses a private bitmap. There was a possible overflow in the
bitmap_size() function, the remainder was not considered.
ia64 save/restore uses a bitmap to send the number of vcpus to the host.
x86 save/restore uses a bitmap to track dirty pages. This bitmap is shared with
the hypervisor. An unused function count_bits() was removed and a new
bitmap_size() function is now used.
xenpaging uses 3 private bitmaps to track the gfns which are in paged-out
state. It had a copy of some Linux bitops.h, which is now obsolete. Also the
BITS_PER_LONG macro was hardcoded to 64 which made it impossible to run 32bit
tools on a 64bit host. Wether this works at all has to be tested, yet.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Committed-by: Ian Jackson <ian.jackson.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>
This patch fixes the following error in recent kernel:
ia64/asm/dom_fw_common.h:47:23: error: asm/fpswa.h: No such file or
directory
Signed-off-by: KUWAMURA Shin'ya <kuwa@jp.fujitsu.com>
This patch fixes compilation errors by 22275:e95dc0eb152d:
ia64/xc_ia64_linux_save.c:797: error: too few arguments to function 'callbacks->switch_qemu_logdirty'
and applies 22285:36a317494429 to ia64.
Signed-off-by: KUWAMURA Shin'ya <kuwa@jp.fujitsu.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
22066:eccfdeb41b80 replaced tools/libxc/ia64/aclinux.h with
xen/include/acpi/platform/aclinux.h.
Because both are incompatible, tools cannot be built on ia64.
This patch fixes compilation errors by defining identifiers at
ac_ia64_tools.h.
Signed-off-by: KUWAMURA Shin'ya <kuwa@jp.fujitsu.com>
Move the function into struct save_callbacks with the others and add
the void *closure to the callback arguments.
Add and propagate an error return code from the callback.
Use this in libxl to pass the save context to
libxl__domain_suspend_common_switch_qemu_logdirty allowing us to reuse
the parent's xenstore handle, gc context etc.
Also add an apparently missing libxl__free_all to
libxl__domain_suspend_common.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
The ia64 specific xc_get_pfn_list doesn't seem any different to the
generic xc_get_pfn_list once the call to xc_ia64_get_pfn_list is
expanded so remove and just use the generic one.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
xc_ia64_pv_recv_vcpu_context does not need to lock the ctxt buffer
since it calls xc_ia64_recv_vcpu_context which calls
xc_vcpu_setcontext which takes care of any necessary bouncing.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
The function isn't really ia64 specific but since the result isn't
actually used in the only caller and the same info is available via
xc_domain_getinfo simply drop the function.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Currently the wrappers for these hypercalls swallow partial success
and return failure to the caller.
In order to use these functions more widely instead of open-coding
uses of XENMEM_* and xc_memory_op add variants which return the actual
hypercall result.
Therefore add the following functions:
xc_domain_increase_reservation
xc_domain_decrease_reservation
xc_domain_populate_physmap
and implement the existing semantics using these new functions as
xc_domain_increase_reservation_exact
xc_domain_decrease_reservation_exact
xc_domain_populate_physmap_exact
replacing the existing xc_domain_memory_* functions.
Use these new functions to replace all open coded uses of
XENMEM_increase_reservation, XENMEM_decrease_reservation and
XENMEM_populate_physmap.
Also rename xc_domain_memory_*_pod_target to xc_domain_*_pod_target
for consistency.
Temporarily add a compatibility macro for
xc_domain_memory_populate_physmap to allow time for qemu to catch up.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
# User Ian Campbell <ian.campbell@citrix.com>
# Date 1282671421 -3600
# Node ID d1dd29a470ef1b9d2c77478a123326036dfe90bb
# Parent d7a4adad9c328decbd384d87b23001aea8951b86
tools/libxc, tools/libelf: Relicense under LGPL v2.1
Relicense these two libraries under LGPL v2.1 only except where
individual files already included the "or later" provision.
Copyright holders have been contacted by Stephen Spector and have all
agreed this change.
Removed tools/libxc/ia64/aclinux.h since it appeared to be
unused. There is a separate, more up to date, copy in
xen/include/acpi/platform/aclinux.h which does appear to be used.
Clarify the license of MiniOS privcmd.h under the same terms as other
tools/include/xen-sys headers.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Stephen Spector <stephen.spector@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
This patch fixes ia64 by the following method:
- rename xc_handle xch
- rename guest_xc xch
- add xc_interface *xch to arguments of some functions
- replace xc_dom_printf with macros
- Add *xch argument to corresponding x86 functions [iwj]
Signed-off-by: KUWAMURA Shin'ya <kuwa@jp.fujitsu.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
This is the patch for error reporting on ia64 that has a special
handling in comparison with i386/x86_64 platforms. This is pretty
straight-forward just to fail on "cannot map mfn page" message instead
of continue since the memory is not being correctly mapped using the
xc_map_foreign_range() function.
From: Michal Novotny <minovotn@redhat.com>
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Previously, the code was inconsistent: some calls to PERROR passed \n
and some did not. With the new logging arrangements, passing \n is
definitely incorrect.
Signed-off-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
This patch eliminate the global variables in libxenctrl (used for
logging and error reporting).
Instead the information which was in the global variables is now in a
new xc_interface* opaque structure, which xc_interface open returns
instead of the raw file descriptor; furthermore, logging is done via
xentoollog.
There are three new parameters to xc_interface_open to control the
logging, but existing callers can just pass "0" for all three to get
the old behaviour.
All libxc callers have been adjusted accordingly.
Also update QEMU_TAG for corresponding qemu change.
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
* Add necessary logging dirty in qemu to avoid guest error with
intensive disk access when live migration
* Take place of shared memory between qemu and migration tools by new
added hypercall, which is clean and simple
Signed-Off-By: Zhai, Edwin <edwin.zhai@intel.com>
Since the shared info layout is fixed, guests are required to use
VCPUOP_register_vcpu_info prior to booting any vCPU beyond the
traditional limit of 32.
MAX_VIRT_CPUS, being an implemetation detail of the hypervisor, is no
longer being exposed in the public headers.
The tools changes are clearly incomplete (and done only so things
would
build again), and the current state of the tools (using scalar
variables all over the place to represent vCPU bitmaps) very likely
doesn't permit booting DomU-s with more than the traditional number of
vCPU-s. Testing of the extended functionality was done with Dom0 (96
vCPU-s, as well as 128 vCPU-s out of which the kernel elected - by way
of a simple kernel side patch - to use only some, resulting in a
sparse
bitmap).
ia64 changes only to make things build, and build-tested only (and the
tools part only as far as the build would go without encountering
unrelated problems in the blktap code).
Signed-off-by: Jan Beulich <jbeulich@novell.com>
This patch fixes the following error.
ia64/xc_ia64_linux_restore.c:546: error: conflicting types for
xc_domain_restore
./xenguest.h:49: error: previous declaration of xc_domain_restore was
here
make[4]: *** [ia64/xc_ia64_linux_restore.o] Error 1
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
This patch defines ia64 xc_hvm_build_target_mem() which
is referenced by xc.c.
Without this patch, xend doesn't boot complaining
that symbol, xc_hvm_build_target_mem, is missing.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
ia64 linux 2.6.18 only use ar.itc for local ticks so that
ar.itc didn't need paravirtualization and it can be work arounded
when save/restore.
However recent ia64 linux uses ar.itc for sched_clock() and
CONFIG_VIRT_CPU_ACCOUNTING and other issues. So ar.itc needs
paravirtualization. Although Most part is done in guest OS,
save/restore needs hypervisor support.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Guest domain's memory map may be updated concurrently so that
it is protected sequence lock.
This patch makes xc_ia64_copy_memmap() use DOM0VP_get_memmap
hypercall to avoid the race.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
remove code duplication between xc_ia64_linux_save.c and xc_core_ia64.c
by introducing xc_ia64_copy_memmap().
Later xc_ia64_copy_memmap() will be enhanced.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
So far, VGA io size is ignored and memory size which assigned to
domain is smaller than what user specified by VGA io size.
This patch take VGA io size into consideration when memory population.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
ia64 compliation fix caused by 17814:9af7a535225f.
- generate_acpi_checksum() is replaced by acpi_tb_checksum()
- move dump_execution_state() definitions from asm-ia64/xenprocessor.h
to asm-ia64/bug.h
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Introduce ia64 save/restore new formart. save part.
The formart twist is necessary for pv_ops linux support saving/restoring
all of the online vcpu context.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Introduce ia64 save/restore new formart. restore part.
The formart twist is necessary for pv_ops linux support saving/restoring
all of the online vcpu context.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
privcmd_hypercall_t only has 5 args. This causes a build failure
with gcc-4.3. Fixes bugzilla #1186.
Signed-off-by: Alex Williamson <alex.williamson@hp.com>
This fixes a bug: by using pfn 0 for console, the page was not cleared,
sometimes causing the domain to fail to boot.
Signed-off-by: Tristan Gingold <tgingold@free.fr>
- 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>
In live migration, a domain is paused and *entire* memory is copied
after pre-copy phase.
(i.e. live migration is not live)
Signed-off-by: Kouya Shimura <kouya@jp.fujitsu.com>
Olaf Hering
Ian Campbell
Keir Fraser
KUWAMURA Shin'ya
Ian Jackson
Keir Fraser
Isaku Yamahata
Alex Williamson