The ARM SMC instructions are already configured to trap to Xen by default. In
this patch we allow a user-space process in a privileged domain to receive
notification of when such event happens through the vm_event subsystem by
introducing the PRIVILEGED_CALL type.
The intended use-case for this feature is for a monitor application to be able
insert tap-points into the domU kernel-code. For this task only unconditional
SMC instruction should be used.
Signed-off-by: Tamas K Lengyel <tamas.lengyel@zentific.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Razvan Cojocaru <rcojocaru@bitdefender.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
unsigned int is only 4-byte long and "4" is treated as int. The shift
would overflow.
Use unsigned long type, calculate the bits to shift before shifting
instead of shifting twice.
Caught by clang compilation test.
Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
The main purpose of the patch is to provide the xen-libxc
plumbing necessary to be able to change the value of the
ratelimit_us parameter online, for Credit2 (like it is
already for Credit1).
While there:
- mention in the Xen logs when rate limiting was enables
and is being disabled (and vice-versa);
- fix csched2_sys_cntl() which was always returning
-EINVAL in the XEN_SYSCTL_SCHEDOP_putinfo case.
And also:
- fix style of an if in csched_sys_cntl();
- fix the style of the switch in csched2_sys_cntl();
Signed-off-by: Dario Faggioli <dario.faggioli@citrix.com>
Reviewed-by: George Dunlap <george.dunlap@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
libxl__domain_make() may want to use b_info so we should set defaults
a little earlier.
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Provide ability to load multiple ACPI modules. Thie feature is needed
by PVHv2 guests and will be used in subsequent patches.
We assume that PVHv2 guests do not load their ACPI modules specified
in the configuration file. We can extend support for that in the future
if desired.
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
PVH guests require DSDT with only ACPI INFO (Xen-specific) and Processor
objects. We separate ASL's ACPI INFO definition into dsdt_acpi_info.asl so
that it can be included in ASLs for both HVM and PVH2.
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
In prepearation to moving acpi sources into generally available
libacpi:
1. Pass IOAPIC/LAPIC/PCI mask values via struct acpi_config
2. Modify include files search paths to point to acpi directory
3. Macro-ise include file for build.c that defines various
utilities used by that file. Users of libacpi will be expected
to define this macro when compiling build.c
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
ACPI sources will be available to various component which will build
them according to their own rules. ACPI's Makefile will only generate
necessary source files.
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
Non-hvmloader users may be building tables in virtual address space
and therefore we need to make sure that values that end up in tables
are physical addresses.
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Components that wish to use ACPI builder will need to provide their own
mem_alloc() and virt_to_phys() routines. Pointers to these routines will
be passed to the builder as memory ops.
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
ACPI builder is currently distributed under GPLv2 license.
We plan to make the builder available to components other than the
hvmloader (which is also GPLv2). Some of these components (such as
libxl) may be distributed under LGPL-2.1 so that they can be used by
non-GPLv2 callers. But this will not be possible if we incorporate
the ACPI builder in those other components.
To avoid this problem we are relicensing sources in ACPI bulder
directory to the Lesser GNU Public License (LGPL) version 2.1
gpl/mk_dsdt_asl.sh file will remain GPL-only pending permission to
relicense from Lenovo due to commit 801d469ad ("[HVM] ACPI support
patch 3 of 4: ACPI _PRT table."))
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Acked-by: Daniel Kiper <dkiper@net-space.pl>
Acked-by: Stefan Berger <stefanb@us.ibm.com>
Acked-by: Kouya Shimura <kouya@jp.fujitsu.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Kevin Tian <kevin.tian@intel.com>
Acked-by: Keir Fraser <keir@xen.org>
Acked-by: Simon Horman <horms@verge.net.au>
Acked-by: Lars Kurth <lars.kurth@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> [for Oracle, VirtualIron and Sun contributions]
Some code (specifically, introduced by commit 801d469ad ("[HVM] ACPI
support patch 3 of 4: ACPI _PRT table.")) has only been licensed under
GPLv2. We want to prevent this code from showing up in non-GPL
binaries which might become possible after we make ACPI builder code
available to users other than hvmloader.
There are two pieces that we need to be careful about:
(1) A small chunk of code in dsdt.asl that implements _PIC method
(2) A chunk of ASL generator in mk_dsdt.c that describes with PCI
interrupt routing.
This code will now be generated by a GPL-only script which will be
invoked only when ACPI builder's Makefile is called with GPL variable
set.
We also strip license header from generated ASL files to prevent
inadverent use of those files with incorrect license.
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Reviewed-by: Wei Liu <wei.liu2@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
This code will be needed by PVH guests who don't want to use full DSDT.
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
Currently configure code doesn't define {SEABIOS/OVMF}_PATH when
--with-system-{ovmf/seabios} is used. Fix this by making sure those
defines are always set if the internal {ovmf/seabios}_path variables are
also set.
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Suggested-by: Wei Liu <wei.liu2@citrix.com>
Cc: Wei Liu <wei.liu2@citrix.com>
Cc: Ian Jackson <ian.jackson@eu.citrix.com>
[ wei: run autogen.sh ]
Acked-by: Wei Liu <wei.liu2@citrix.com>
Fix the definition of the xengnttab_grant_copy function so it's in line
with the prototypes in xengnttab.h.
This unbreaks the tools build on systems that don't have a gnttab device.
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Cc: Ian Jackson <ian.jackson@eu.citrix.com>
Cc: Wei Liu <wei.liu2@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
That way we can print out the header if we are sure the
hypervisor has been compiled with Xen Livepatching.
Reviewed-by: Ross Lagerwall <ross.lagerwall@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Intermediate stages of building a target should be made with
temporary files that are copied to final target in the end.
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
Right now, two out of the three events related to
context switch (that is TRC_SCHED_SWITCH_INFPREV and
TRC_SCHED_SWITCH_INFNEXT) only report the domain id,
and not the vcpu id.
That's omitting a useful piece of information, and
even if we be figured that out by looking at other
records, that's unnecessarily complicated (especially
if working on a trace from a sctipt).
This changes both the tracing code in Xen and the parsing
code in tools at once, to avoid introducing transitional
regressions.
Signed-off-by: Dario Faggioli <dario.faggioli@citrix.com>
Acked-by: George Dunlap <george.dunlap@citrix.com>
Add HVM usb passthrough support to libxl by using qemu's capability
to emulate standard USB controllers.
A USB controller is added via qmp command to the emulated hardware
when a usbctrl device of type DEVICEMODEL is requested. Depending on
the requested speed the appropriate hardware type is selected. A host
USB device can then be added to the emulated USB controller via qmp
command.
Removing of the devices is done via qmp commands, too.
Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: George Dunlap <george.dunlap@citrix.com>
With the planned support of HVM USB passthrough via the USB emulation
capabilities of qemu libxl has to support guest devices which have no
back- and frontend. Information about those devices will live in the
libxl part of Xenstore only.
Add some basic support to libxl to be able to cope with this scenario.
Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
In case of failure when trying to add a new USB controller to a domain
libxl might leak xenstore entries. Add a function to remove them and
call this function in case of failure.
Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
3a7f872a ("tools: lift BUILD_BUG_ON to a tools header file") was taken
out from an rather old half finished branch by dropping unrelated
changes. Unfortunately two issues sneaked in.
1. Hvmloader should be standalone. Revert the changes to hvmloader.
2. The define guard in libs.h was erroneously deleted. Add that back.
Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
In a linux part an ioctl(gntdev, IOCTL_GNTDEV_GRANT_COPY, ..)
system call is invoked. In mini-os the operation is yet not
implemented. For the OSs that does not implement gnttab the
call of the grant copy operation causes abort.
Signed-off-by: Paulina Szubarczyk <paulinaszubarczyk@gmail.com>
Reviewed-by: David Vrabel <david.vrabel@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
[ wei: modify this patch to use BUILD_BUG_ON in xen-tools/libs.h ]
Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Only define BUILD_BUG_ON when there isn't one already, because mini-os
currently leaks that.
Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Currently it is only possible to set mem_access restrictions only for
a contiguous range of GFNs (or, as a particular case, for a single GFN).
This patch introduces a new libxc function taking an array of GFNs.
The alternative would be to set each page in turn, using a userspace-HV
roundtrip for each call, and triggering a TLB flush per page set.
Signed-off-by: Razvan Cojocaru <rcojocaru@bitdefender.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Tamas K Lengyel <tamas@tklengyel.com>
Acked-by: Julien Grall <julien.grall@arm.com>
Acked-by: George Dunlap <george.dunlap@citrix.com>
Add a new xl command "qemu-monitor-command" to issue arbitrary commands
to a domain's device model. Syntax is:
xl qemu-monitor-command <domain> <command>
The command is issued via qmp human-monitor-command command. Any
information returned by the command is printed to stdout.
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Dario Faggioli <dario.faggioli@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Instead of passing the array size as an argument when calling
libxl__xs_kvs_of_flexarray() let the function get the size from the
array instead.
Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Add a function libxl__qmp_run_command_flexarray() to run a qmp command
with an array of arguments. The arguments are name-value pairs stored
in a flexarray.
Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Rename libxl_pvusb.c to libxl_usb.c in order to reflect future support
of USB passthrough via qemu emulated USB controllers.
Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Add a parameter to xencommons configuration file for specifying the
maximum memory size of the xenstore domain.
Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Add a parameter to specify the maximum memory size of the xenstore
domain. In case the xenstore domain supports ballooning it will be
capable to adjust its own size according to its memory needs.
The maximum memory size can be specified as an absolute value in
MiB, as a fraction of the host's memory, or as a combination of
both (the maximum of the absolute and the fraction value):
--maxmem <m> maxmem is <m> MiB
--maxmem <a>/<b> maxmem is hostmem * a / b
--maxmem <m>:<a>/<b> maxmem is max(<m> MiB, hostmem * a / b)
Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Blktap2 is effectively dead code for a few years.
Notable changes in this patch:
0. Unhook blktap2 from build system
1. Now libxl no longer supports TAP disk backend, appropriate assertions
are added and some code paths now return ERROR_FAIL
2. Tap is no longer a supported backend in doc
3. Remove relevant entries in MAINTAINERS
A patch to actually remove blktap2 directory will come later.
Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: George Dunlap <George.Dunlap@eu.citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
We updated flex output files in 4b314c89 ("libxl: update flex output
files") for DSA 3653-1 / CVE-2016-6354. But Debian security team
discovered the fix to flex was incomplete and issued DSA 3653-2. We need
to update our flex output files accordingly.
Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Tamas K Lengyel
Wei Liu
Dario Faggioli
Boris Ostrovsky
Roger Pau Monne
Konrad Rzeszutek Wilk
Juergen Gross
Paulina Szubarczyk
Razvan Cojocaru
Marek Marczykowski-Górecki