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* Update Xen version to 4.2.0-rc14.2.0-rc1Keir Fraser2012-07-302-2/+2
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* x86: fix off-by-one in nr_irqs_gsi calculationJan Beulich2012-07-271-1/+1
| | | | | | | | highest_gsi() returns the last valid GSI, not a count. Signed-off-by: Jan Beulich <jbeulich@suse.com> Acked-by: Joe Jin <joe.jin@oracle.com> Acked-by: Keir Fraser <keir@xen.org>
* x86-64: drop updating of UREGS_rip when converting sysenter to #GPJan Beulich2012-07-271-5/+2
| | | | | | | | | | | | | | | This was set to zero immediately before the #GP injection code, since SYSENTER doesn't really have a return address. Reported-by: Ian Campbell <Ian.Campbell@citrix.com> Furthermore, UREGS_cs and UREGS_rip don't need to be written a second time, as the PUSHes above already can/do take care of putting in place the intended values. Signed-off-by: Jan Beulich <jbeulich@suse.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Keir Fraser <keir@xen.org>
* use C11's _Static_assert() for BUILD_BUG_ON etc when availableJan Beulich2012-07-271-2/+8
| | | | | | | | | | | | This produces a more meaningful compiler diagnostic in case it happens to trigger. As a minor piece of cleanup, at once also use BUILD_BUG_ON_ZERO() to actually define BUILD_BUG_ON() in the legacy case, slightly reducing redundancy. Signed-off-by: Jan Beulich <jbeulich@suse.com> Acked-by: Keir Fraser <keir@xen.org>
* serial: don't waste space allocated for the tx buffer(s)Jan Beulich2012-07-271-2/+2
| | | | | | | | We're allocating minimally a full page, so no reason to not also use all that space. Signed-off-by: Jan Beulich <jbeulich@suse.com> Acked-by: Keir Fraser <keir@xen.org>
* x86/mm/p2m: use NX bit for p2m entriesChristoph Egger2012-07-261-1/+1
| | | | | | | | | In addition to c/s 25614:7d8a2e8412f2 also use the NX bit for non-ram types. Signed-off-by: Christoph Egger <Christoph.Egger@amd.com> Acked-by: Tim Deegan <tim@xen.org> Committed-by: Tim Deegan <tim@xen.org>
* libxl: fix reentrancy hazard in fd event processingIan Jackson2012-07-262-16/+76
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In afterpoll_internal, the callback functions may register and deregister events arbitrarily. This means that we need to consider the reentrancy-safety of the event machinery state variables. Most of the code is safe but the fd handling is not. Fix this by arranging to restart the fd scan loop every time we call one of these callback functions. For this loop to terminate, we modify afterpoll_check_fd so that it returns only once for each of afterpoll's efds. Another possible solution would be simply to return from afterpoll_internal after calling efd->func. That would be a small and more obviously correct change but would prevent the process from handling more than one fd event with a single call to poll. This is apropos of a report from Roger Pau Monne to me (pers.comm.) of this crash on NetBSD: Program terminated with signal 11, Segmentation fault. #0 0x00007f7ff743131b in afterpoll_check_fd (poller=<optimized out>, fds=0x7f7ff7b241c0, nfds=7, fd=-1, events=1) at libxl_event.c:856 856 if (fds[slot].fd != fd) Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com> Reported-by: Roger Pau Monne <roger.pau@citrix.com> Tested-by: Roger Pau Monne <roger.pau@citrix.com> Acked-by: Ian Campbell <Ian.Campbell@citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* x86/hvm: don't leave emulator in inconsistent stateJan Beulich2012-07-261-0/+2
| | | | | | | | | | | | | | | | | The fact that handle_mmio(), and thus the instruction emulator, is being run through twice for emulations that require involvement of the device model, allows for the second run to see a different guest state than the first one. Since only the MMIO-specific emulation routines update the vCPU's io_state, if they get invoked on the second pass, internal state (and particularly this variable) can be left in a state making successful emulation of a subsequent MMIO operation impossible. Consequently, whenever the emulator invocation returns without requesting a retry of the guest instruction, reset io_state. Signed-off-by: Jan Beulich <jbeulich@suse.com> Acked-by: Keir Fraser <keir@xen.org> Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
* libxl: convert libxl_device_vfb_add to an async operationRoger Pau Monne2012-07-266-8/+27
| | | | | | | | | | Split libxl_device_vfb_add into libxl__device_vfb_add (to be used inside already running ao's), and make libxl_device_vfb_add a stub to call libxl__device_vfb_add. Signed-off-by: Roger Pau Monne <roger.pau@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: convert libxl_device_vkb_add to an async operationRoger Pau Monne2012-07-266-8/+29
| | | | | | | | | | Split libxl_device_vkb_add into libxl__device_vkb_add (to be used inside already running ao's), and make libxl_device_vkb_add a stub to call libxl__device_vkb_add. Signed-off-by: Roger Pau Monne <roger.pau@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: call hotplug scripts for nic devices from libxlRoger Pau Monne2012-07-265-13/+178
| | | | | | | | | | | | | | | Since most of the needed work is already done in previous patches, this patch only contains the necessary code to call hotplug scripts for nic devices, that should be called when the device is added or removed from a guest. Added another parameter to libxl__get_hotplug_script_info, that is used to know the number of times hotplug scripts have been called for that device. This is currently used by IOEMU nics on Linux. Signed-off-by: Roger Pau Monne <roger.pau@citrix.com> Acked-by: Ian Jackson<ian.jackson@eu.citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: call hotplug scripts for disk devices from libxlRoger Pau Monne2012-07-267-6/+273
| | | | | | | | | | | | | | | | Since most of the needed work is already done in previous patches, this patch only contains the necessary code to call hotplug scripts for disk devices, that should be called when the device is added or removed from a guest. We will chain the launch of the disk hotplug scripts after the device_backend_callback callback, or directly from libxl__initiate_device_{add,remove} if the device is already in the desired state. Signed-off-by: Roger Pau Monne <roger.pau@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: set correct nic type depending on the guestRoger Pau Monne2012-07-264-7/+30
| | | | | | | | | | | | Fix the use of nic type, which results in the following for each type of domain: * HVM: let the user choose, if none specified use VIF_IOEMU. * PV: use VIF is none provided, return error if VIF_IOEMU requested. Signed-off-by: Roger Pau Monne <roger.pau@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: add option to choose who executes hotplug scriptsRoger Pau Monne2012-07-2610-1/+84
| | | | | | | | | | | | | | | | | Add and option to xl.conf file to decide if hotplug scripts are executed from the toolstack (xl) or from udev as it used to be in the past. This option is only introduced in this patch, but it has no effect since the code to call hotplug scripts from libxl is introduced in a latter patch. This choice will be saved in "libxl/disable_udev", as specified in the DISABLE_UDEV_PATH constant. Signed-off-by: Roger Pau Monne <roger.pau@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: convert libxl_device_nic_add to an async operationRoger Pau Monne2012-07-268-22/+114
| | | | | | | | | | | | | | | | | | | | This patch converts libxl_device_nic_add to an ao operation that waits for device backend to reach state XenbusStateInitWait and then marks the operation as completed. This is not really useful now, but will be used by latter patches that will launch hotplug scripts after we reached the desired xenbus state. Calls to libxl_device_nic_add have also been moved to occur after the device model has been launched, so when hotplug scripts are called from this functions the interfaces already exists. As usual, libxl_device_nic_add callers have been modified, and the internal function libxl__device_disk_add has been used if the call was inside an already running ao. Signed-off-by: Roger Pau Monne <roger.pau@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: convert libxl_device_disk_add to an async opRoger Pau Monne2012-07-268-72/+306
| | | | | | | | | | | | | | | | | | This patch converts libxl_device_disk_add to an ao operation that waits for device backend to reach state XenbusStateInitWait and then marks the operation as completed. This is not really useful now, but will be used by later patches that will launch hotplug scripts after we reached the desired xenbus state. As usual, libxl_device_disk_add callers have been modified, and the internal function libxl__device_disk_add has been used if the call was inside an already running ao. Signed-off-by: Roger Pau Monne <roger.pau@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> [ ijc -- drop hunk modifying libxl_cdrom_insert which is not needed after 25670:3666e9712eaf "libxl: make libxl_cdrom_insert async" ] Committed-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: convert libxl__device_disk_local_attach to an async opRoger Pau Monne2012-07-263-51/+192
| | | | | | | | | | | | | | This will be needed in future patches, when libxl__device_disk_add becomes async also. Create a new status structure that defines the local attach of a disk device and use it in libxl__device_disk_local_attach. This is done in this patch to split the changes introduced when libxl__device_disk_add becomes async. Signed-off-by: Roger Pau Monne <roger.pau@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: refactor disk addition to take a helperRoger Pau Monne2012-07-262-124/+148
| | | | | | | | | | | | | Change libxl__device_disk_add to no longer take a xs transaction and instead pass a helper for the local attach case that's used to get the free vdev. This function contains some non-functional changes due to an indentation change. Signed-off-by: Roger Pau Monne <roger.pau@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: fix removal of secondary consolesRoger Pau Monne2012-07-261-1/+11
| | | | | | | | | | | | | | | | | | | | | | Secondary consoles are processed by libxl with the rest of the devices by calling libxl__initiate_device_remove that waits for the device to reach state 6 before procceeding with the removal. When libxl is destroying the console devices, Qemu is already dead or dying, and xenconsoled completely ignores the state backend entry for console devices, since it performs the cleanup based on the result of reads/writes to the tty. Since we don't want to execute hotplug scripts for consoles, leave the behaviour as it was previously, and just nuke the backend/frontend xenstore entries by calling libxl__device_destroy. Report: http://markmail.org/message/yqgppcsdip6tnmh6 Reported-by: Ian Campbell <ian.campbell@eu.citrix.com> Signed-off-by: Roger Pau Monne <roger.pau@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: make libxl_cdrom_insert async.Ian Campbell2012-07-265-19/+111
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This functionality is a bit of a mess and several configurations are not properly supported. The protocol for changing is basically to change the params node in the disk xenstore backend. There is no interlock or error reporting in this protocol. Completely removing the device and recreating it is not necessary nor expected. For reference the equivalent xend code is tools/python/xen/xend/server/blkif.py::BlkifController::reconfigureDevice(). Device model stub domains are not supported. There appears to be no way correctly to do a media change on the emulated device while also changing the stub domains PV backend to point to the new backend. Reworking this is a significant task deferred until 4.3. xend (via the equivalent "xm block-configure" functionality) also does not support media change for stub domains (confirmed by code inspection and experiment). Unlike xend this version errors out instead of silently not achieving anything in this case. There is no support for qemu-xen (upstream) media change. I expect this is supported on the qemu side and required QMP plumbing on the libxl side. Again this is deferred until 4.3. On the plus side the current implementation is trivially "asynchronous". Adds a libxl__xs_writev_atonce helper to write a key-value list to xenstore in one go. Tested with Windows 7. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: have NUMA placement deal with cpupoolsDario Faggioli2012-07-263-38/+95
| | | | | | | | | | | | | | | | | In such a way that only the cpus belonging to the cpupool of the domain being placed are considered for the placement itself. This happens by filtering out all the nodes in which the cpupool has not any cpu from the placement candidates. After that ---as cpu pooling not necessarily happens at NUMA nodes boundaries--- we also make sure only the actual cpus that are part of the pool are considered when counting how much processors a placement candidate provides. Signed-off-by: Dario Faggioli <dario.faggioli@citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: enable automatic placement of guests on NUMA nodesDario Faggioli2012-07-268-3/+674
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | If a domain does not have a VCPU affinity, try to pin it automatically to some PCPUs. This is done taking into account the NUMA characteristics of the host. In fact, we look for a combination of host's NUMA nodes with enough free memory and number of PCPUs for the new domain, and pin it to the VCPUs of those nodes. Deciding which placement is the best happens by means of some heuristics. For instance, smaller candidates are better, both from a domain perspective (less memory spreading among nodes) and from the entire system perspective (smaller memory fragmentation). In case of candidates of equal sizes (i.e., with the same number of nodes), the amount of free memory and the number of domains' vCPUs already pinned to the candidates' nodes are both considered. Very often, candidates with greater amount of memory are the one we wants, as this is good for keeping memory fragmentation under control. However, we do not want to overcommit some node too much, just because it has a lot of memory, and that's why the number of vCPUs must be accounted for. This all happens internally to libxl, and no API for driving the mechanism is provided for now. This matches what xend already does. Signed-off-by: Dario Faggioli <dario.faggioli@citrix.com> Acked-by: George Dunlap <george.dunlap@eu.citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Tested-by: Andre Przywara <andre.przywara@amd.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: libxl__xs_path_cleanup don't print error if ENOENTRoger Pau Monne2012-07-261-2/+4
| | | | | | Signed-off-by: Roger Pau Monne <roger.pau@citrix.com> Acked-by: Ian Campbell <ian.campbell@eu.citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* xen: update xensource.com to xen.orgAndrew Cooper2012-07-268-20/+20
| | | | | | | | | | | | This patch was constructed by grepping for xensource.com over the entire repository and eyeballing which ones were sensible to update. In addition, the xen-tools mailing list has been deprecated, so update xentop to refer to xen-devel instead. Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* xl: support xend empty cdrom device syntaxIan Jackson2012-07-265-8/+28
| | | | | | | | | | | | | | | xend accepts `,hdc:cdrom,r' as an empty CDROM drive. However this is not consistent with the existing xl syntax in docs/misc/xl-disk-configuration.txt which requires `,,hdc:cdrom,r' (the additional positional paramter is the format). We fix this by spotting the case specially: when the target is empty and the format contains a colon, reinterpret the format as <vdev>:<devtype>. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* xl: disk parsing preparation for empty cdrom devicesIan Jackson2012-07-264-68/+93
| | | | | | | | | | | | | | | | | | | | | Prepare the ground for parsing the xend empty cdrom syntax, by separating out some non-functional changes as this pre-patch: * Clarify the disk syntax documentation wording to refer to deprecated syntaxes too. * Make DPC in libxlu_disk_l.l useable in the helper functions as well as in lexer rules, by providing two definitions, each in force in the appropriate parts of the file. * Break the <vdev>[:<devtype>] parsing out into a helper function, `vdev_and_devtype'. No functional change. Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* xl: support empty CDROM devicesIan Campbell2012-07-268-44/+80
| | | | | | | | | | | | | | | | | | | | | | | | | The important change here is to xlu_disk_parse to correctly set format == EMPTY for CDROM devices which are empty. Test cases are added which check for correctness here. xend accepts ',hdc:cdrom,r'[0] as an empty CDROM drive however this is not consistent with the xl syntax in docs/misc/xl-disk-configuration.txt which requires ',,hdc:cdrom,r' (the additional positional paramter is the format). I'm not sure if/how this can be fixed. Note that xend does not accept ',,hdc:cdrom,r' There are several incidental cleanups included the the cdrom-{insert,eject} commands: - add a dry-run mode - use the non-deprecated disk specification syntax - check for and report errors from libxl_cdrom_insert [0] http://wiki.xen.org/wiki/CD_Rom_Support_in_Xen Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: set nic type of stub to PV instead of copying from the parentRoger Pau Monne2012-07-261-0/+1
| | | | | | | | | Set the type of the nics used in sutbdoms to PV unconditianlly, or the call to setdefaults later is going to fail. Signed-off-by: Roger Pau Monne <roger.pau@citrix.com> Acked-by: Ian Campbell <ian.campbell@eu.citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* xl: main_blockdetach don't call destroy if remove succeedsRoger Pau Monne2012-07-261-5/+6
| | | | | | | | | xl was calling libxl_device_disk_destroy after a successful call to libxl_device_disk_remove, which leads to an error. Signed-off-by: Roger Pau Monne <roger.pau@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: use libxl__xs_path_cleanup on device_destroyRoger Pau Monne2012-07-261-4/+14
| | | | | | | | | | Since the hotplug script that was in charge of cleaning the backend is no longer launched, we need to clean the backend by ourselves, so use libxl__xs_path_cleanup instead of xs_rm. Signed-off-by: Roger Pau Monne <roger.pau@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: rename _IOEMU nic type to VIF_IOEMURoger Pau Monne2012-07-264-10/+10
| | | | | | | | | This change will avoid the confusion caused by the fact that IOEMU means both PV and TAP network interfaces. Signed-off-by: Roger Pau Monne <roger.pau@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: rename vifs to nicsRoger Pau Monne2012-07-266-60/+60
| | | | | | | | | | | | | This change renames functions and struct values that used to contain vifs in their names to nics, that provides a more clear name to define network interfaces without referring to the backend that is behind them. This is not a functional change. Signed-off-by: Roger Pau Monne <roger.pau@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: libxl__device_model_version_running should return an intIan Campbell2012-07-252-4/+2
| | | | | | | | | | | On error it returns -1 and therefore it needs to return int and not libxl_device_model_enum. Otherwise gcc 4.6.2 complains: libxl.c: In function ‘libxl_domain_suspend’: libxl.c:778:9: error: case value ‘4294967295’ not in enumerated type ‘libxl_device_model_version’ [-Werror=switch] Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* MergeIan Campbell2012-07-253-8/+12
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| * x86/EFI: define and use EFI_DIR make variable, defaulting to /usr/lib64/efiMatt Wilson2012-07-243-8/+12
| | | | | | | | | | | | | | | | | | | | After commit 25594:ad08cd8e7097, EFI Xen binaries were installed to /efi instead of /usr/lib64/efi. This patch restores the previous behaviour established in commit 23645:638f31a30b6c. Signed-off-by: Matt Wilson <msw@amazon.com> Reported-by: Olaf Hering <olaf@aepfle.de> Committed-by: Jan Beulich <jbeulich@suse.com>
* | libxl: kill the need for checking and linking to libmDario Faggioli2012-07-254-52/+1
| | | | | | | | | | | | | | | | | | | | | | | | Which was introduced in 7b0dc7f3ddfe. This is because the NUMA placement heuristic does not need FP arith anymore. As usual when changing configure.ac, remember to rerun autoconf after applying this change. Signed-off-by: Dario Faggioli <dario.faggioli@citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* | libxl: libxl_domain_sched_params_set case for ARINC 653 schedulerAndrew Kane2012-07-251-0/+11
| | | | | | | | | | | | | | | | | | | | Implements sched_arinc653_domain_set to match the existing API. Currently, there is no domain-specific configuration when using the ARINC 653 scheduler, so we simply return success. Signed-off-by: Andrew Kane <Andrew.Kane@dornerworks.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* | arm: implement hypercall continuationsIan Campbell2012-07-254-11/+115
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Largely cribbed from x86, register names differ and the return value is r0 == the first argument rather than the hypercall number (which is r12). We must only clobber the hypercall arguments if PC has not been changed since continuations rely on them. Multicall variant is untested, On ARM do_multicall_call is currently a BUG() so we obviously don't use that yet. I have left a BUG in the hypercall continuation path too since it will need validation once multicalls are implemented. Since the multicall state is local we do not need a globally atomic {test,set}_bit. However we do need to be atomic WRT interrupts so can't just use the naive RMW version. Stick with the global atomic implementation for now but keep the __ as documentaion of the intention. Signed-off-by: Ian Campbell <Ian.Campbell@citrix.com> Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* | arm: add bounds check on hypercall arrayIan Campbell2012-07-251-0/+6
| | | | | | | | | | | | | | | | | | Otherwise a guest can cause us to run off the end of the array. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> [ ijc -- switched to >= not > ] Committed-by: Ian Campbell <ian.campbell@citrix.com>
* | arm: clobber only argument registersIan Campbell2012-07-252-22/+40
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Previously it was declared that r1..r4 would all be clobbered by all hypercalls. Instead declare that only actually used hypercall argument registers are clobbered. This is more inline with generally expected conventions and allows for more optimal code in the caller in some cases. This is an ABI change, although an older guest which expects more things to be clobbered than we do now won't be adversely impacted. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* | python: disable libxl bindingsIan Campbell2012-07-251-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | They are rather incomplete and have no users or maintainer. Many of the functions which do exsit raise a NotImplemented exception. Disable them so that users of the 4.2 release aren't confused into trying to use them. This only does the minimal to disable them and makes it easy to locally reenable if anyone wants to hack these into shape in the future. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* | build: include Tools.mk first in tools/Rules.mkRoger Pau Monne2012-07-251-1/+1
| | | | | | | | | | | | | | | | | | Tools.mk should be included first, or PREFIX is not honoured in the other conf/ files that define the paths of several tools. Signed-off-by: Roger Pau Monne <roger.pau@citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* | libxl: fix comment regarding bootloader disk lifetimeIan Jackson2012-07-251-3/+5
| | | | | | | | | | | | Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* | libxl: fix transaction leak in logdirty error pathIan Jackson2012-07-252-0/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | libxl__domain_suspend_common_switch_qemu_logdirty would leak t if there was an error. Fix this. Also, document the intended usage for libxl__xs_transaction_* in the doc comment in libxl_internal.h. Reported-by: Ian Campbell <Ian.Campbell@citrix.com> Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com> Acked-by: Ian Campbell <Ian.Campbell@citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* | hotplug: network-bridge: fix for interfaces with no gatewayIan Campbell2012-07-251-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This comes from an old Debian bug report http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=588477 which refers to http://lists.xen.org/archives/html/xen-users/2010-06/msg00420.html. Although we no longer have a trap in _claim_lock as described (this was removed in 25590:bb250383a4f5 "hotplug/Linux: use flock based locking") and the use of network-* scripts is discouraged (in favour of using distro provided mechanisms) the general principal that relying on the semantics of /bin/sh's && is unwise seems sound. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* | hotplug: fix ip_of for systems using a peer-to-peer linkIan Campbell2012-07-251-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is from an old Debian bug at http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=437127 I'm slightly inferring what the configuration which trigger this issue is, the bug report says: This code however fails if no slash is present in the address, which is the case in my configuration: $ ip addr show dev eth0 2: eth0: <BROADCAST,MULTICAST,UP,10000> mtu 1500 qdisc pfifo_fast qlen 1000 link/ether 00:16:17:90:b4:35 brd ff:ff:ff:ff:ff:ff inet 88.198.12.XXX peer 88.198.12.XXX/32 brd 88.255.255.255 scope global eth0 I hope either Marc or Stefan can correct me if I have surmised wrongly what this configuration represents. This function is used in the vif-route configuration. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* | libxl: refuse to try and migrate an HVM guest using qemu-xenIan Campbell2012-07-251-0/+17
|/ | | | | | | | | libxl/qemu-upstream currently do not collude together to enable log-dirty mode and therefore migrations are unsafe. Refuse to even try for now. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: fix bug the number of running vcpu inconsistent with config fileZhang, Yang Z2012-07-241-0/+1
| | | | | | | | | | | | The following patch will fix the bug 1825. http://bugzilla.xen.org/bugzilla/show_bug.cgi?id=1825 When using memcpy to update vcpu_online, the high bits of vcpu_online may unmodified if the size of avail_vcpus less than vcpu_online. So we need to clear it before the memory copying. Signed-off-by: Yang Zhang <yang.z.zhang@Intel.com> Acked-by: Ian Campbell <ian.campbelL@citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* docs: fix link in qemu-upstream docIan Campbell2012-07-241-2/+2
| | | | | | | | | | The current syntax created a link back to the source page rather than to the wiki. I couldn't find the markdown syntax to make the link text be the link as well, without repreating the URL, so I reworded it slightly. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: fix vif.ifname when used with stub device model.Ian Campbell2012-07-241-2/+19
| | | | | | | | | | | | | | | | | Currently the same libxl_device_nic is used to create both the HVM domain and its stub domain's NICs. This means that if a vifname is provided both the HVM domains PV NIC and the stub domains PV NIC will get the same name and the DM's NIC will fail to be attached. Instead launder the libxl_device_nic to add the TAP_DEVICE_SUFFIX ("-emu"). This is a bit of a misnomer, since the device is actually PV, but it is used to "back" the emulated device in the stub domain and this naming scheme is consistent with the non-stub case and is known to work e.g. with our hotplug scripts. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
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