Commit Graph

54896 Commits

Author SHA1 Message Date
David Gibson
ba50822ff8 spapr: Abort on delete failure in spapr_drc_release()
We currently ignore errors from the object_property_del() in
spapr_drc_release().  But the only way that could fail is if the property
doesn't exist, in which case it's a bug that we're in spapr_drc_release()
at all.  So change from ignoring to abort()ing on errors.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2017-07-17 15:07:05 +10:00
David Gibson
765d1bdda5 spapr: Simplify unplug path
spapr_lmb_release() and spapr_core_release() call hotplug_handler_unplug()
which after a bunch of indirection calls spapr_memory_unplug() or
spapr_core_unplug().  But we already know which is the appropriate thing
to call here, so we can just fold it directly into the release function.

Once that's done, there's no need for an hc->unplug method in the spapr
machine at all: since we also have an hc->unplug_request method, the
hotplug core will never use ->unplug.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Greg Kurz <groug@kaod.org>
Tested-by: Daniel Barboza <danielhb@linux.vnet.ibm.com>
2017-07-17 15:07:05 +10:00
David Gibson
82a93a1d30 spapr: Remove 'awaiting_allocation' DRC flag
The awaiting_allocation flag in the DRC was introduced by aab9913
"spapr_drc: Prevent detach racing against attach for CPU DR", allegedly to
prevent a guest crash on racing attach and detach.  Except.. information
from the BZ actually suggests a qemu crash, not a guest crash.  And there
shouldn't be a problem here anyway: if the guest has already moved the DRC
away from UNUSABLE state, the detach would already be deferred, and if it
hadn't it should be safe to detach it (the guest should fail gracefully
when it attempts to change the allocation state).

I think this was probably just a bandaid for some other problem in the
state management.  So, remove awaiting_allocation and associated code.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Tested-by: Greg Kurz <groug@kaod.org>
Tested-by: Daniel Barboza <danielhb@linux.vnet.ibm.com>
2017-07-17 15:07:05 +10:00
Laurent Vivier
94fd9cbaa3 spapr: Treat devices added before inbound migration as coldplugged
When migrating a guest which has already had devices hotplugged,
libvirt typically starts the destination qemu with -incoming defer,
adds those hotplugged devices with qmp, then initiates the incoming
migration.

This causes problems for the management of spapr DRC state.  Because
the device is treated as hotplugged, it goes into a DRC state for a
device immediately after it's plugged, but before the guest has
acknowledged its presence.  However, chances are the guest on the
source machine *has* acknowledged the device's presence and configured
it.

If the source has fully configured the device, then DRC state won't be
sent in the migration stream: for maximum migration compatibility with
earlier versions we don't migrate DRCs in coldplug-equivalent state.
That means that the DRC effectively changes state over the migrate,
causing problems later on.

In addition, logging hotplug events for these devices isn't what we
want because a) those events should already have been issued on the
source host and b) the event queue should get wiped out by the
incoming state anyway.

In short, what we really want is to treat devices added before an
incoming migration as if they were coldplugged.

To do this, we first add a spapr_drc_hotplugged() helper which
determines if the device is hotplugged in the sense relevant for DRC
state management.  We only send hotplug events when this is true.
Second, when we add a device which isn't hotplugged in this sense, we
force a reset of the DRC state - this ensures the DRC is in a
coldplug-equivalent state (there isn't usually a system reset between
these device adds and the incoming migration).

This is based on an earlier patch by Laurent Vivier, cleaned up and
extended.

Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Greg Kurz <groug@kaod.org>
Tested-by: Daniel Barboza <danielhb@linux.vnet.ibm.com>
2017-07-17 15:07:05 +10:00
David Gibson
5341258e86 spapr: Minor cleanups to events handling
The rtas_error_log structure is marked packed, which strongly suggests its
precise layout is important to match an external interface.  Along with
that one could expect it to have a fixed endianness to match the same
interface.  That used to be the case - matching the layout of PAPR RTAS
event format and requiring BE fields.

Now, however, it's only used embedded within sPAPREventLogEntry with the
fields in native order, since they're processed internally.

Clear that up by removing the nested structure in sPAPREventLogEntry.
struct rtas_error_log is moved back to spapr_events.c where it is used as
a temporary to help convert the fields in sPAPREventLogEntry to the correct
in memory format when delivering an event to the guest.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2017-07-17 15:07:05 +10:00
Daniel Henrique Barboza
fd38804b38 spapr: migrate pending_events of spapr state
In racing situations between hotplug events and migration operation,
a rtas hotplug event could have not yet be delivered to the source
guest when migration is started. In this case the pending_events of
spapr state need be transmitted to the target so that the hotplug
event can be finished on the target.

To achieve the minimal VMSD possible to migrate the pending_events list,
this patch makes the changes in spapr_events.c:

- 'log_type' of sPAPREventLogEntry struct deleted. This information can be
derived by inspecting the rtas_error_log summary field. A new function
called 'spapr_event_log_entry_type' was added to retrieve the type of
a given sPAPREventLogEntry.

- sPAPREventLogEntry, epow_log_full and hp_log_full were redesigned. The
only data we're going to migrate in the VMSD is the event log data itself,
which can be divided in two parts: a rtas_error_log header and an extended
event log field. The rtas_error_log header contains information about the
size of the extended log field, which can be used inside VMSD as the size
parameter of the VBUFFER_ALOC field that will store it. To allow this use,
the header.extended_length field must be exposed inline to the VMSD instead
of embedded into a 'data' field that holds everything. With this in mind,
the following changes were done:

    * a new 'header' field was added to sPAPREventLogEntry. This field holds a
a struct rtas_error_log inline.
    * the declaration of the 'rtas_error_log' struct was moved to spapr.h
to be visible to the VMSD macros.
    * 'data' field of sPAPREventLogEntry was renamed to 'extended_log' and
now holds only the contents of the extended event log.
   *  'struct rtas_error_log hdr' were taken away from both epow_log_full
and hp_log_full. This information is now available at the header field of
sPAPREventLogEntry.
   * epow_log_full and hp_log_full were renamed to epow_extended_log and
hp_extended_log respectively. This rename makes it clearer to understand
the new purpose of both structures: hold the information of an extended
event log field.
    * spapr_powerdown_req and spapr_hotplug_req_event now creates a
sPAPREventLogEntry structure that contains the full rtas log entry.
    * rtas_event_log_queue and rtas_event_log_dequeue now receives a
sPAPREventLogEntry pointer as a parameter instead of a void pointer.

- the endianess of the sPAPREventLogEntry header is now native instead
of be32. We can use the fields in native endianess internally and write
them in be32 in the guest physical memory inside 'check_exception'. This
allows the VMSD inside spapr.c to read the correct size of the
entended_log field.

- inside spapr.c, pending_events is put in a subsection in the spapr state
VMSD to make sure migration across different versions is not broken.

A small change in rtas_event_log_queue and rtas_event_log_dequeue were also
made: instead of calling qdev_get_machine(), both functions now receive
a pointer to the sPAPRMachineState. This pointer is already available in
the callers of these functions and we don't need to waste resources
calling qdev() again.

Signed-off-by: Daniel Henrique Barboza <danielhb@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2017-07-17 15:07:05 +10:00
David Gibson
3579d606a0 spapr: Remove unnecessary instance_size specifications from DRC subtypes
All the DRC subtypes explicitly list instance_size in TypeInfo (all as
sizeof(sPAPRDRConnector).  This isn't necessary, since if it's not listed
it will be derived from the parent type.

Worse, this is dangerous, because if a subtype is changed in future to
have a larger structure, then subtypes of that subtype also need to have
instance_size changed, or it will lead to hard to track memory corruption
bugs.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2017-07-17 15:06:08 +10:00
Paolo Bonzini
978373143c travis: add no-TCG build
It's fairly easy for --disable-tcg to bitrot.  Test it in our CI.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20170714093016.10897-1-pbonzini@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
2017-07-17 11:34:20 +08:00
Fam Zheng
0b95ff72cb docker.py: Improve subprocess exit code handling
A few error handlings are missing because we ignore the subprocess exit
code, for example "docker build" errors are currently ignored.

Introduce _do_check() aside the existing _do() method and use it in a
few places.

Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <20170712075528.22770-3-famz@redhat.com>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Fam Zheng <famz@redhat.com>
2017-07-17 11:34:20 +08:00
Fam Zheng
58bf7b6d8c docker.py: Drop infile parameter
The **kwargs can do this just well.

Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <20170712075528.22770-2-famz@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Fam Zheng <famz@redhat.com>
2017-07-17 11:34:20 +08:00
Daniel P. Berrange
8a2390a4f4 docker: Don't enable networking as a side-effect of DEBUG=1
When trying to debug problems with tests it is natural to set
DEBUG=1 when starting the docker environment. Unfortunately
this has a side-effect of enabling an eth0 network interface
in the container, which changes the operating environment of
the test suite. IOW tests with fail may suddenly start
working again if DEBUG=1 is set, due to changed network setup.

Add a separate NETWORK variable to allow enablement of
networking separately from DEBUG=1. This can be used in two
ways. To enable the default docker network backend

  make docker-test-build@fedora NETWORK=1

while to enable a specific network backend, eg join the network
associated with the container 'wibble':

  make docker-test-build@fedora NETWORK=container:wibble

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <20170713144352.2212-1-berrange@redhat.com>
[Drop the superfluous second $(subst ...). - Fam]
Signed-off-by: Fam Zheng <famz@redhat.com>
2017-07-17 11:34:20 +08:00
Paolo Bonzini
5aca18a4ff ssh: support I/O from any AioContext
The coroutine may run in a different AioContext, causing the
fd handler to busy wait.  Fix this by resetting the handler
in restart_coroutine, before the coroutine is restarted.

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20170629132749.997-12-pbonzini@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
2017-07-17 11:34:20 +08:00
Paolo Bonzini
f1af3251f8 sheepdog: add queue_lock
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20170629132749.997-11-pbonzini@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
2017-07-17 11:34:20 +08:00
Paolo Bonzini
1f01e50b83 qed: protect table cache with CoMutex
This makes the driver thread-safe.  The CoMutex is dropped temporarily
while accessing the data clusters or the backing file.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20170629132749.997-10-pbonzini@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
2017-07-17 11:34:11 +08:00
Paolo Bonzini
61c7887e0f qed: introduce bdrv_qed_init_state
This will be used in the next patch, which will call bdrv_qed_do_open
with a CoMutex taken.  bdrv_qed_init_state provides a nice place to
initialize it.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20170629132749.997-9-pbonzini@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
2017-07-17 11:33:11 +08:00
Paolo Bonzini
61124f03ab block: invoke .bdrv_drain callback in coroutine context and from AioContext
This will let the callback take a CoMutex in the next patch.

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20170629132749.997-8-pbonzini@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
2017-07-17 11:28:15 +08:00
Paolo Bonzini
e7569c1829 qed: move tail of qed_aio_write_main to qed_aio_write_{cow, alloc}
This part is never called for in-place writes, move it away to avoid
the "backwards" coding style typical of callback-based code.

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20170629132749.997-7-pbonzini@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
2017-07-17 11:28:15 +08:00
Paolo Bonzini
254aee4dbb vvfat: make it thread-safe
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20170629132749.997-6-pbonzini@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
2017-07-17 11:28:15 +08:00
Paolo Bonzini
778b087e51 vpc: make it thread-safe
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20170629132749.997-5-pbonzini@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
2017-07-17 11:28:15 +08:00
Paolo Bonzini
1e88663979 vdi: make it thread-safe
The VirtualBox driver is using a mutex to order all allocating writes,
but it is not protecting accesses to the bitmap because they implicitly
happen under the AioContext mutex.  Change this to use a CoRwlock
explicitly.

Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20170629132749.997-4-pbonzini@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
2017-07-17 11:28:15 +08:00
Paolo Bonzini
667221c10d coroutine-lock: add qemu_co_rwlock_downgrade and qemu_co_rwlock_upgrade
These functions are more efficient in the presence of contention.
qemu_co_rwlock_downgrade also guarantees not to block, which may
be useful in some algorithms too.

Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20170629132749.997-3-pbonzini@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
2017-07-17 11:28:15 +08:00
Paolo Bonzini
a8c57408cd qcow2: call CoQueue APIs under CoMutex
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20170629132749.997-2-pbonzini@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
2017-07-17 11:28:15 +08:00
Peter Maydell
75cb298d90 slirp: Handle error returns from sosendoob()
sosendoob() can return a failure code, but all its callers ignore it.
This is OK in sbappend(), as the comment there states -- we will try
again later in sowrite(). Add a (void) cast to tell Coverity so.
In sowrite() we do need to check the return value -- we should handle
a write failure in sosendoob() the same way we handle a write failure
for the normal data.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2017-07-15 14:28:25 +02:00
Peter Maydell
0b466065eb slirp: Handle error returns from slirp_send() in sosendoob()
The code in sosendoob() assumes that slirp_send() always
succeeds, but it might return an OS error code (for instance
if the other end has disconnected). Catch these and return
the caller either -1 on error or the number of urgent bytes
actually written. (None of the callers check this return
value currently, though.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2017-07-15 14:28:25 +02:00
Peter Maydell
12dccfe4f5 slirp: fork_exec(): Don't close() a negative number in fork_exec()
In a fork_exec() error path we try to closesocket(s) when s might
be a negative number because the thing that failed was the
qemu_socket() call. Add a guard so we don't do this.

(Spotted by Coverity: CID 1005727 issue 1 of 2.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2017-07-15 14:28:25 +02:00
Marc-André Lureau
e88718fc0b slirp: use DIV_ROUND_UP
I used the clang-tidy qemu-round check to generate the fix:
https://github.com/elmarco/clang-tools-extra

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2017-07-15 14:28:25 +02:00
Peter Maydell
2286468fac docs/devel/memory.txt: Add section about RAM migration
Add a section to docs/devel/memory.txt about migration of
the backing memory for RAM regions.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1499438577-7674-12-git-send-email-peter.maydell@linaro.org
2017-07-14 17:59:42 +01:00
Peter Maydell
ce66d778cd hw/display/qxl.c Use memory_region_init_ram()
Switch to memory_region_init_ram(), since we pass the same DeviceState
to both memory_region_init_ram_nomigrate() and vmstate_register_ram().

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1499438577-7674-11-git-send-email-peter.maydell@linaro.org
2017-07-14 17:59:42 +01:00
Peter Maydell
fefa92565f hw/pci/pci.c: Use memory_region_init_rom()
Since we pass the same DeviceState object to
memory_region_init_rom_nomigrate() and vmstate_register_ram(), we can
switch to using memory_region_init_rom() instead.

(This isn't entirely obvious from the code since it is using
&pdev->qdev rather than DEVICE(pdov) for some reason, but
PCIDevice does indeed use 'qdev' for its parent DeviceState member.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1499438577-7674-10-git-send-email-peter.maydell@linaro.org
2017-07-14 17:59:42 +01:00
Peter Maydell
bba3ddf72e hw/block/pflash_cfi01, pflash_cfi02: Use memory_region_init_rom_device()
Since we pass the same DeviceState object to
memory_region_init_rom_device_nomigrate() and vmstate_register_ram(),
we can switch to using memory_region_init_rom_device() instead.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1499438577-7674-9-git-send-email-peter.maydell@linaro.org
2017-07-14 17:59:42 +01:00
Peter Maydell
98a99ce084 hw: Use new memory_region_init_{ram, rom, rom_device}() functions
Use the new functions memory_region_init_{ram,rom,rom_device}()
instead of manually calling the _nomigrate() version and then
vmstate_register_ram_global().

Patch automatically created using coccinelle script:
 spatch --in-place -sp_file scripts/coccinelle/memory-region-init-ram.cocci -dir hw

(As it turns out, there are no instances of the rom and
rom_device functions that are caught by this script.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1499438577-7674-8-git-send-email-peter.maydell@linaro.org
2017-07-14 17:59:42 +01:00
Peter Maydell
96d851a64b scripts/coccinelle/memory-region-init-ram.cocci: New script
Add a coccinelle script that can be used to automatically convert
manual sequences of
 memory_region_init_ram_nomigrate()
 vmstate_register_ram{,_global}()
to use the new
 memory_region_init_ram()

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1499438577-7674-7-git-send-email-peter.maydell@linaro.org
2017-07-14 17:59:42 +01:00
Peter Maydell
b08199c6fb memory.h: Add memory_region_init_{ram, rom, rom_device}() handling migration
Add new utility functions which both initialize a RAM
MemoryRegion and arrange for its contents to be migrated;
we give thes the memory_region_init_ram(), memory_region_init_rom()
and memory_region_init_rom_device() names that we just freed up
by renaming the old implementations to _nomigrate().

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1499438577-7674-6-git-send-email-peter.maydell@linaro.org
2017-07-14 17:59:42 +01:00
Peter Maydell
b59821a95b memory: Rename memory_region_init_rom() and _rom_device() to _nomigrate()
Rename memory_region_init_rom() to memory_region_init_rom_nomigrate()
and memory_region_init_rom_device() to
memory_region_init_rom_device_nomigrate().

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1499438577-7674-5-git-send-email-peter.maydell@linaro.org
2017-07-14 17:59:42 +01:00
Peter Maydell
1cfe48c1ce memory: Rename memory_region_init_ram() to memory_region_init_ram_nomigrate()
Rename memory_region_init_ram() to memory_region_init_ram_nomigrate().
This leaves the way clear for us to provide a memory_region_init_ram()
which does handle migration.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1499438577-7674-4-git-send-email-peter.maydell@linaro.org
2017-07-14 17:59:42 +01:00
Peter Maydell
a5c0234bb2 memory: Document that the RAM MR initializers do not handle migration
The various functions for initializing RAM MemoryRegions do not do
anything to cause the data in the MemoryRegion to be migrated.
Note in their documentation comments that this is the responsibility
of the caller.

(We will shortly add a new function that *does* do this for you.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1499438577-7674-3-git-send-email-peter.maydell@linaro.org
2017-07-14 17:59:42 +01:00
Peter Maydell
09ad643823 include/hw/boards.h: Document memory_region_allocate_system_memory()
Add a documentation comment for memory_region_allocate_system_memory().

In particular, the reason for this function's existence and the
requirement on board code to call it exactly once are non-obvious.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1499438577-7674-2-git-send-email-peter.maydell@linaro.org
2017-07-14 17:47:52 +01:00
Michael S. Tsirkin
4871b51b92 vmgenid-test: use boot-sector infrastructure
There's no requirement for RSDP to be installed last
by the firmware, so in rare cases vmgen id test hits
a race: RSDP is there but VM GEN ID isn't.

To fix, switch to common boot sector infrastructure.

Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Ben Warren <ben@skyportsystems.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Ben Warren <ben@skyportsystems.com>
Message-id: 1500046217-24597-1-git-send-email-mst@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-07-14 17:03:03 +01:00
Peter Maydell
23f87b9973 Merge sockets 2017/07/11 v3
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Merge remote-tracking branch 'remotes/berrange/tags/pull-sockets-2017-07-11-3' into staging

Merge sockets 2017/07/11 v3

# gpg: Signature made Fri 14 Jul 2017 16:09:03 BST
# gpg:                using RSA key 0xBE86EBB415104FDF
# gpg: Good signature from "Daniel P. Berrange <dan@berrange.com>"
# gpg:                 aka "Daniel P. Berrange <berrange@redhat.com>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: DAF3 A6FD B26B 6291 2D0E  8E3F BE86 EBB4 1510 4FDF

* remotes/berrange/tags/pull-sockets-2017-07-11-3:
  io: preserve ipv4/ipv6 flags when resolving InetSocketAddress
  sockets: ensure we don't accept IPv4 clients when IPv4 is disabled
  sockets: don't block IPv4 clients when listening on "::"
  sockets: ensure we can bind to both ipv4 & ipv6 separately

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-07-14 16:13:30 +01:00
Daniel P. Berrange
563a3987b9 io: preserve ipv4/ipv6 flags when resolving InetSocketAddress
The original InetSocketAddress struct may have has_ipv4 and
has_ipv6 fields set, which will control both the ai_family
used during DNS resolution, and later use of the V6ONLY
flag.

Currently the standalone DNS resolver code drops the
has_ipv4 & has_ipv6 flags after resolving, which means
the later bind() code won't correctly set V6ONLY.

This fixes the following scenarios

  -vnc :0,ipv4=off
  -vnc :0,ipv6=on
  -vnc :::0,ipv4=off
  -vnc :::0,ipv6=on

which all mistakenly accepted IPv4 clients

Acked-by: Gerd Hoffmann <kraxel@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2017-07-14 14:28:29 +01:00
Daniel P. Berrange
94bc0d1978 sockets: ensure we don't accept IPv4 clients when IPv4 is disabled
Currently if you disable listening on IPv4 addresses, via the
CLI flag ipv4=off, we still mistakenly accept IPv4 clients via
the IPv6 listener socket due to IPV6_V6ONLY flag being unset.

We must ensure IPV6_V6ONLY is always set if ipv4=off

This fixes the following scenarios

  -incoming tcp::9000,ipv6=on
  -incoming tcp:[::]:9000,ipv6=on
  -chardev socket,id=cdev0,host=,port=9000,server,nowait,ipv4=off
  -chardev socket,id=cdev0,host=,port=9000,server,nowait,ipv6=on
  -chardev socket,id=cdev0,host=::,port=9000,server,nowait,ipv4=off
  -chardev socket,id=cdev0,host=::,port=9000,server,nowait,ipv6=on

which all mistakenly accepted IPv4 clients

Acked-by: Gerd Hoffmann <kraxel@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2017-07-14 14:28:29 +01:00
Daniel P. Berrange
4dc5d815c4 sockets: don't block IPv4 clients when listening on "::"
When inet_parse() parses the hostname, it is forcing the
has_ipv6 && ipv6 flags if the address contains a ":". This
means that if the user had set the ipv4=on flag, to try to
restrict the listener to just ipv4, an error would not have
been raised.  eg

   -incoming tcp:[::]:9000,ipv4

should have raised an error because listening for IPv4
on "::" is a non-sensical combination. With this removed,
we now call getaddrinfo() on "::" passing PF_INET and
so getaddrinfo reports an error about the hostname being
incompatible with the requested protocol:

 qemu-system-x86_64: -incoming tcp:[::]:9000,ipv4: address resolution
    failed for :::9000: Address family for hostname not supported

Likewise it is explicitly setting the has_ipv4 & ipv4
flags when the address contains only digits + '.'. This
has no ill-effect, but also has no benefit, so is removed.

Acked-by: Gerd Hoffmann <kraxel@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2017-07-14 14:28:29 +01:00
Daniel P. Berrange
5e059be4c7 sockets: ensure we can bind to both ipv4 & ipv6 separately
When binding to an IPv6 socket we currently force the
IPV6_V6ONLY flag to off. This means that the IPv6 socket
will accept both IPv4 & IPv6 sockets when QEMU is launched
with something like

  -vnc :::1

While this is good for that case, it is bad for other
cases. For example if an empty hostname is given,
getaddrinfo resolves it to 2 addresses 0.0.0.0 and ::,
in that order. We will thus bind to 0.0.0.0 first, and
then fail to bind to :: on the same port. The same
problem can happen if any other hostname lookup causes
the IPv4 address to be reported before the IPv6 address.

When we get an IPv6 bind failure, we should re-try the
same port, but with IPV6_V6ONLY turned on again, to
avoid clash with any IPv4 listener.

This ensures that

  -vnc :1

will bind successfully to both 0.0.0.0 and ::, and also
avoid

  -vnc :1,to=2

from mistakenly using a 2nd port for the :: listener.

This is a regression due to commit 396f935 "ui: add ability to
specify multiple VNC listen addresses".

Acked-by: Gerd Hoffmann <kraxel@gmail.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2017-07-14 14:28:29 +01:00
Peter Maydell
fbc8ea1ed0 s390x/kvm/migration/cpumodel: fixes, enhancements and cleanups
- add a network boot rom for s390 (Thomas Huth)
 - migration of storage attributes like the CMMA used/unused state
 - PCI related enhancements - full support for aen, ais and zpci
 - migration support for css with vmstates (Halil Pasic)
 - cpu model enhancements for cpu features
 - guarded storage support
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Merge remote-tracking branch 'remotes/borntraeger/tags/s390x-20170714' into staging

s390x/kvm/migration/cpumodel: fixes, enhancements and cleanups

- add a network boot rom for s390 (Thomas Huth)
- migration of storage attributes like the CMMA used/unused state
- PCI related enhancements - full support for aen, ais and zpci
- migration support for css with vmstates (Halil Pasic)
- cpu model enhancements for cpu features
- guarded storage support

# gpg: Signature made Fri 14 Jul 2017 11:33:04 BST
# gpg:                using RSA key 0x117BBC80B5A61C7C
# gpg: Good signature from "Christian Borntraeger (IBM) <borntraeger@de.ibm.com>"
# Primary key fingerprint: F922 9381 A334 08F9 DBAB  FBCA 117B BC80 B5A6 1C7C

* remotes/borntraeger/tags/s390x-20170714: (40 commits)
  s390x/gdb: add gs registers
  s390x/arch_dump: also dump guarded storage control block
  s390x/kvm: enable guarded storage
  s390x/kvm: Enable KSS facility for nested virtualization
  s390x/cpumodel: add esop/esop2 to z12 model
  s390x/cpumodel: we are always in zarchitecture mode
  s390x/cpumodel: wire up new hardware features
  s390x/flic: migrate ais states
  s390x/cpumodel: add zpci, aen and ais facilities
  s390x: initialize cpu firstly
  pc-bios/s390: rebuild s390-ccw.img
  pc-bios/s390: add s390-netboot.img
  pc-bios/s390-ccw: Link libnet into the netboot image and do the TFTP load
  pc-bios/s390-ccw: Add virtio-net driver code
  pc-bios/s390-ccw: Add core files for the network bootloading program
  roms/SLOF: Update submodule to latest status
  pc-bios/s390-ccw: Add code for virtio feature negotiation
  pc-bios/s390-ccw: Remove unused structs from virtio.h
  pc-bios/s390-ccw: Move byteswap functions to a separate header
  pc-bios/s390-ccw: Add a write() function for stdio
  ...

Conflicts:
	target/s390x/kvm.c

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-07-14 14:19:35 +01:00
Peter Maydell
6c6076662d * gdbstub fixes (Alex)
* IOMMU MemoryRegion subclass (Alexey)
 * Chardev hotswap (Anton)
 * NBD_OPT_GO support (Eric)
 * Misc bugfixes
 * DEFINE_PROP_LINK (minus the ARM patches - Fam)
 * MAINTAINERS updates (Philippe)
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Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

* gdbstub fixes (Alex)
* IOMMU MemoryRegion subclass (Alexey)
* Chardev hotswap (Anton)
* NBD_OPT_GO support (Eric)
* Misc bugfixes
* DEFINE_PROP_LINK (minus the ARM patches - Fam)
* MAINTAINERS updates (Philippe)

# gpg: Signature made Fri 14 Jul 2017 11:06:27 BST
# gpg:                using RSA key 0xBFFBD25F78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>"
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4  E2F7 7E15 100C CD36 69B1
#      Subkey fingerprint: F133 3857 4B66 2389 866C  7682 BFFB D25F 78C7 AE83

* remotes/bonzini/tags/for-upstream: (55 commits)
  spapr_rng: Convert to DEFINE_PROP_LINK
  cpu: Convert to DEFINE_PROP_LINK
  mips_cmgcr: Convert to DEFINE_PROP_LINK
  ivshmem: Convert to DEFINE_PROP_LINK
  dimm: Convert to DEFINE_PROP_LINK
  virtio-crypto: Convert to DEFINE_PROP_LINK
  virtio-rng: Convert to DEFINE_PROP_LINK
  virtio-scsi: Convert to DEFINE_PROP_LINK
  virtio-blk: Convert to DEFINE_PROP_LINK
  qdev: Add const qualifier to PropertyInfo definitions
  qmp: Use ObjectProperty.type if present
  qdev: Introduce DEFINE_PROP_LINK
  qdev: Introduce PropertyInfo.create
  qom: enforce readonly nature of link's check callback
  translate-all: remove redundant !tcg_enabled check in dump_exec_info
  vl: fix breakage of -tb-size
  nbd: Implement NBD_INFO_BLOCK_SIZE on client
  nbd: Implement NBD_INFO_BLOCK_SIZE on server
  nbd: Implement NBD_OPT_GO on client
  nbd: Implement NBD_OPT_GO on server
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-07-14 12:16:09 +01:00
Christian Borntraeger
86158a2a2b s390x/gdb: add gs registers
Let's provide the guarded storage registers via gdb server.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2017-07-14 12:29:49 +02:00
Christian Borntraeger
21a106904b s390x/arch_dump: also dump guarded storage control block
Write the new note section of type 30b (guarded storage control block).

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2017-07-14 12:29:49 +02:00
Fan Zhang
62deb62d99 s390x/kvm: enable guarded storage
Introduce guarded storage support for KVM guests on s390.
We need to enable the capability, extend machine check validity,
sigp store-additional-status-at-address, and migration.

The feature is fenced for older machine type versions.

Signed-off-by: Fan Zhang <zhangfan@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2017-07-14 12:29:49 +02:00
Farhan Ali
c0a9cd940e s390x/kvm: Enable KSS facility for nested virtualization
If the host supports keyless subset (KSS) then first level
guest (G2) should enable KSS facility as well.

Signed-off-by: Farhan Ali <alifm@linux.vnet.ibm.com>
Reviewed-by: Eric Farman <farman@linux.vnet.ibm.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2017-07-14 12:29:49 +02:00
Jason J. Herne
7223bccea3 s390x/cpumodel: add esop/esop2 to z12 model
Add esop and esop2 features to z12 model where esop2 was originally
introduced. Disable esop and esop2 when using compatibility machine
v2.9 or earlier.

Signed-off-by: Jason J. Herne <jjherne@linux.vnet.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2017-07-14 12:29:49 +02:00