The console->conspath name is changed to console->xspath as it is
clear from the name that it is referring to xenstore path.
Signed-off-by: Bhupinder Thakur <bhupinder.thakur@linaro.org>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Xenconsole uses a domain structure which contains console specific fields. This
patch defines a new console structure, which would be used by the xenconsole
functions to perform console specific operations like reading/writing data from/to
the console ring buffer or reading/writing data from/to console tty.
This patch is in preparation to support multiple consoles to support vuart console.
Signed-off-by: Bhupinder Thakur <bhupinder.thakur@linaro.org>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Add a new vuart console node to xenstore. This node is added at
/local/domain/$DOMID/vuart/0.
The node contains information such as the ring-ref, event channel,
buffer limit and type of console.
Xenconsole reads the node information to setup the ring buffer and
event channel for sending/receiving vuart data.
Signed-off-by: Bhupinder Thakur <bhupinder.thakur@linaro.org>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>
Add a new domctl API to initialize vpl011. It takes the GFN and console
backend domid as input and returns an event channel to be used for
sending and receiving events from Xen.
Xen will communicate with xenconsole using GFN as the ring buffer and
the event channel to transmit and receive pl011 data on the guest domain's
behalf.
Signed-off-by: Bhupinder Thakur <bhupinder.thakur@linaro.org>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Acked-by: Wei Liu <wei.liu2@citrix.com>
An option is provided in libxl to enable/disable SBSA vuart while
creating a guest domain.
Libxl now supports a generic vuart console and SBSA uart is a specific type.
In future support can be added for multiple vuart of different types.
User can enable SBSA vuart by adding the following line in the guest
configuration file:
vuart = "sbsa_uart"
Signed-off-by: Bhupinder Thakur <bhupinder.thakur@linaro.org>
Acked-by: Stefano Stabellini <sstabellini@kernel.org>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>
DEFINE_XEN_FLEX_RING(xencons) defines common helper functions such as
xencons_queued() to tell the current size of the ring buffer,
xencons_mask() to mask off the index, which are useful helper functions.
pl011 emulation code will use these helper functions.
io/console.h includes io/ring.h which defines DEFINE_XEN_FLEX_RING.
In console/daemon/io.c, string.h had to be included before io/console.h
because ring.h uses string functions.
Signed-off-by: Bhupinder Thakur <bhupinder.thakur@linaro.org>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
If case of a vm_event with the emulate_flags set, if the instruction
is not implemented by the emulator, the monitor should be notified instead
of directly injecting a hw exception.
This behavior can be used to re-execute an instruction not supported by
the emulator using the real processor (e.g. altp2m) instead of just
crashing.
Signed-off-by: Petre Pircalabu <ppircalabu@bitdefender.com>
Acked-by: Tamas K Lengyel <tamas@tklengyel.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Paul Durrant <paul.durrant@citrix.com>
And the xl.cfg man page documentation.
It should be possible to re-introduce it in the future with a proper
implementation, in order to create a HVM guest without a device model,
which is slightly different from a PVHv2 guest.
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
This also includes the x86 ACPI related functions. Remove support for
device model "none"
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Remove the usage of device model "none" in the migration stream
related functions.
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
PVH guests use the same device model selection as PV guests, because
PVH guests only use the device model for the PV backends.
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
CD-ROM backend selection was partially based on the device model, this
is no longer needed since the device model "none" is now removed, so
HVM guests always have a device model.
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Remove the device model "none" support from domain creation and
introduce support for PVH.
This requires changing some of the HVM checks to be applied for both
HVM and PVH.
Setting device model to none was never supported since it was an
unstable interface used while transitioning from PVHv1 to PVHv2.
Now that PVHv1 has been finally removed and that a supported
interface for PVHv2 is being added this option is no longer necessary,
hence it's removed.
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
The new guest type is introduced to the libxl IDL. libxl__domain_make
is also modified to save the guest type, and libxl__domain_type is
expanded to fetch that information when detecting guest type.
This is required because the hypervisor only differentiates between PV
and HVM guests, so libxl needs some extra information in order to
differentiate between a HVM and a PVH guest.
The new PVH guest type and its options are documented on the xl.cfg
man page.
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
The new firmware option aims to provide a coherent way to set the
firmware for the different kind of guests Xen supports.
For PV guests the available firmwares are pvgrub{32|64}, and for HVM
the following are supported: bios, uefi, seabios, rombios and ovmf.
Note that uefi maps to ovmf, and bios maps to the default firmware for
each device model.
The xl.cfg man page is updated to document the new feature.
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Introduce a new type option to xl configuration files in order to
specify the domain type. This supersedes the current builder option.
The new option is documented in the xl.cfg man page, and the previous
builder option is marked as deprecated.
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
This is required because those options will be used by the new PVH
guest type, and thus need to be shared between PV and HVM.
Defines are added in order to signal consumers that the fields are
available.
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Code movement in preparation for making the bootloader,
bootloader_args, nested_hvm and timer_mode fields shared between all
guests types. While moving the code, limit the line-length to 80
columns.
No functional change.
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
The deprecation involves generating a function that copies the
deprecated fields into it's new location if the new location has not
been set.
The fields that are going to be shared between PVH and HVM or between
PVH and PV are moved to the top level of libxl_domain_build_info, and
the old locations are marked as deprecated.
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Those types are missing a helper to check whether a definition of the
type holds the default value. This will be required by a later patch
that will implement deprecation of fields inside of a libxl type.
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
The pad field needs to be zero as required by the hypervisor.
Instead of setting the pad separately, use C99 initialiser.
Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Reviewed-by: Paul Durrant <paul.durrant@citrix.com>
Add new domain config items for setting the limits for the maximum
numbers of grant table frames and maptrack frames of a domain.
Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Add xl.conf config items for default values of grant limits:
max_grant_frames will set the default for the maximum number of grant
frames for a domain which will take effect if the domain's config file
doesn't specify a value. If max_grant_frames isn't set in xl.conf it
will default to 32 for hosts with all memory below 16TB and to 64 for
hosts with memory above 16TB.
max_maptrack_frames will set the default for the maximum number of
maptrack frames for a domain. If max_maptrack_frames isn't set in
xl.conf it will default to 0, as normally only backend domains need
maptrack frames.
Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Add the maximum possible mfn of the host to the libxl_physinfo
data structure.
Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
When creating a Xenstore stubdom set the grant limits: the stubdom
will need to setup a very limited amount of grants only, so 4 grant
frames are enough. For being able to support up to 32768 domains it
will need 128 maptrack frames (1 mapping per domain, 256 maptrack
entries per maptrack frame).
Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Add a new libxc function xc_domain_set_gnttbl_limits() setting the
limits for the maximum numbers of grant table frames and maptrack
frames of a domain.
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Paul Durrant <paul.durrant@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
This Patch allows a migration precopy policy to be specified.
The precopy phase of the xc_domain_save() live migration algorithm has
historically been implemented to run until either a) (almost) no pages
are dirty or b) some fixed, hard-coded maximum number of precopy
iterations has been exceeded. This policy and its implementation are
less than ideal for a few reasons:
- the logic of the policy is intertwined with the control flow of the
mechanism of the precopy stage
- it can't take into account facts external to the immediate
migration context, such external state transfer state, interactive
user input, or the passage of wall-clock time.
- it does not permit the user to change their mind, over time, about
what to do at the end of the precopy (they get an unconditional
transition into the stop-and-copy phase of the migration)
To permit callers to implement arbitrary higher-level policies governing
when the live migration precopy phase should end, and what should be
done next:
- add a precopy_policy() callback to the xc_domain_save() user-supplied
callbacks
- during the precopy phase of live migrations, consult this policy after
each batch of pages transmitted and take the dictated action, which
may be to a) abort the migration entirely, b) continue with the
precopy, or c) proceed to the stop-and-copy phase.
- provide an implementation of the old policy, used when
precopy_policy callback is not provided.
Signed-off-by: Jennifer Herbert <Jennifer.Herbert@citrix.com>
Signed-off-by: Joshua Otto <jtotto@uwaterloo.ca>
Reviewed-by: Paul Durrant <paul.durrant@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Since ioreq servers are only relevant to HVM guests and all the names in
question unequivocally refer to guest frame numbers, name them all .*gfn
to avoid any confusion.
This patch is purely cosmetic. No semantic or functional change.
Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Reviewed-by: Wei Liu <wei.liu2@citrix.com>
Reviewed-by: Roger Pau Monné <roger.pau@citrix.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
PIE may (and commonly will) result in the binary being loaded above
the 4Gb boundary, which can't work with at least the VZEROUPPER compat
mode test.
Add -fno-PIE and -no-pie when appropriate so that gcc won't generate a
PIE executable.
Reported-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
xs_check_watch() checks for watch notifications without blocking.
Together with the binding for xs_fileno(), this makes it possible
to write event-driven clients in Python.
Signed-off-by: Euan Harris <euan.harris@citrix.com>
Reviewed-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
When a watch fires, xspy_read_watch() checks whether the client has
registered interest in the path which changed and, if so, returns the
path and a client-supplied token. The binding for xs_check_watch()
needs to do the same, so this patch extracts the search code into a
separate function.
Signed-off-by: Euan Harris <euan.harris@citrix.com>
Reviewed-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
xs_fileno() returns a file descriptor which receives events when Xenstore
watches fire. Exposing this in the Python bindings is a prerequisite
for writing event-driven clients in Python.
Signed-off-by: Euan Harris <euan.harris@citrix.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reviewed-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
As we have generic functions to get device list
(libxl__device_list) no need to have callback in
the framework. To resolve issue when XS entry
doesn't match device name, device type is
extended with field "entry" which keeps XS entry.
Signed-off-by: Oleksandr Grytsov <oleksandr_grytsov@epam.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Bhupinder Thakur
Petre Pircalabu
Roger Pau Monne
Wei Liu
Juergen Gross
Jennifer Herbert
Dario Faggioli
Paul Durrant
Euan Harris
Oleksandr Grytsov
Jan Beulich