Peter Maydell [Wed, 7 Feb 2018 14:38:53 +0000 (14:38 +0000)]
Merge remote-tracking branch 'remotes/awilliam/tags/vfio-update-
20180206.0' into staging
VFIO updates 2018-02-06
- SPAPR in-kernel TCE accleration (Alexey Kardashevskiy)
- MSI-X relocation (Alex Williamson)
- Add missing platform mutex init (Eric Auger)
- Redundant variable cleanup (Alexey Kardashevskiy)
- Option to disable GeForce quirks (Alex Williamson)
# gpg: Signature made Tue 06 Feb 2018 18:21:22 GMT
# gpg: using RSA key
239B9B6E3BB08B22
# gpg: Good signature from "Alex Williamson <alex.williamson@redhat.com>"
# gpg: aka "Alex Williamson <alex@shazbot.org>"
# gpg: aka "Alex Williamson <alwillia@redhat.com>"
# gpg: aka "Alex Williamson <alex.l.williamson@gmail.com>"
# Primary key fingerprint: 42F6 C04E 540B D1A9 9E7B 8A90 239B 9B6E 3BB0 8B22
* remotes/awilliam/tags/vfio-update-
20180206.0:
vfio/pci: Add option to disable GeForce quirks
vfio/common: Remove redundant copy of local variable
hw/vfio/platform: Init the interrupt mutex
vfio/pci: Allow relocating MSI-X MMIO
qapi: Create DEFINE_PROP_OFF_AUTO_PCIBAR
vfio/pci: Emulate BARs
vfio/pci: Add base BAR MemoryRegion
vfio/pci: Fixup VFIOMSIXInfo comment
spapr/iommu: Enable in-kernel TCE acceleration via VFIO KVM device
vfio/spapr: Use iommu memory region's get_attr()
memory/iommu: Add get_attr()
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Peter Maydell [Wed, 7 Feb 2018 12:07:23 +0000 (12:07 +0000)]
Merge remote-tracking branch 'remotes/dgilbert/tags/pull-migration-
20180206a' into staging
Migration pull 2018-02-06
This is based off Juan's last pull with a few extras, but
also removing:
Add migration xbzrle test
Add migration precopy test
As well as my normal test boxes, I also gave it a test
on a 32 bit ARM box and it seems happy (a Calxeda highbank)
and a big-endian power box.
Dave
# gpg: Signature made Tue 06 Feb 2018 15:33:31 GMT
# gpg: using RSA key
0516331EBC5BFDE7
# gpg: Good signature from "Dr. David Alan Gilbert (RH2) <dgilbert@redhat.com>"
# Primary key fingerprint: 45F5 C71B 4A0C B7FB 977A 9FA9 0516 331E BC5B FDE7
* remotes/dgilbert/tags/pull-migration-
20180206a:
migration: incoming postcopy advise sanity checks
migration: Don't leak IO channels
migration: Recover block devices if failure in device state
tests: Adjust sleeps for migration test
tests: Create migrate-start-postcopy command
tests: Add deprecated commands migration test
tests: Use consistent names for migration
tests: Consolidate accelerators declaration
tests: Remove deprecated migration tests commands
migration: Drop current address parameter from save_zero_page()
migration: use s->threshold_size inside migration_update_counters
migration/savevm.c: set MAX_VM_CMD_PACKAGED_SIZE to 1ul << 32
migration: Route errors down through migration_channel_connect
migration: Allow migrate_fd_connect to take an Error *
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Peter Maydell [Tue, 6 Feb 2018 19:28:08 +0000 (19:28 +0000)]
Merge remote-tracking branch 'remotes/ehabkost/tags/python-next-pull-request' into staging
Python queue, 2018-02-05
# gpg: Signature made Mon 05 Feb 2018 23:07:57 GMT
# gpg: using RSA key
2807936F984DC5A6
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>"
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF D1AA 2807 936F 984D C5A6
* remotes/ehabkost/tags/python-next-pull-request: (21 commits)
docker: change Fedora images to run with python3
travis: improve python version test coverage
ui: update keycodemapdb to get py3 fixes
input: add missing JIS keys to virtio input
qemu.py: don't launch again before shutdown()
qemu.py: cleanup redundant calls in launch()
qemu.py: use poll() instead of 'returncode'
qemu.py: always cleanup on shutdown()
qemu.py: refactor launch()
qemu.py: better control of created files
qemu.py: remove unused import
configure: allow use of python 3
scripts: ensure signrom treats data as bytes
qapi: force a UTF-8 locale for running Python
qapi: ensure stable sort ordering when checking QAPI entities
qapi: remove '-q' arg to diff when comparing QAPI output
qapi: Adapt to moved location of 'maketrans' function in py3
qapi: adapt to moved location of StringIO module in py3
qapi: Use OrderedDict from standard library if available
qapi: use items()/values() intead of iteritems()/itervalues()
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Alex Williamson [Tue, 6 Feb 2018 18:08:27 +0000 (11:08 -0700)]
vfio/pci: Add option to disable GeForce quirks
These quirks are necessary for GeForce, but not for Quadro/GRID/Tesla
assignment. Leaving them enabled is fully functional and provides the
most compatibility, but due to the unique NVIDIA MSI ACK behavior[1],
it also introduces latency in re-triggering the MSI interrupt. This
overhead is typically negligible, but has been shown to adversely
affect some (very) high interrupt rate applications. This adds the
vfio-pci device option "x-no-geforce-quirks=" which can be set to
"on" to disable this additional overhead.
A follow-on optimization for GeForce might be to make use of an
ioeventfd to allow KVM to trigger an irqfd in the kernel vfio-pci
driver, avoiding the bounce through userspace to handle this device
write.
[1] Background: the NVIDIA driver has been observed to issue a write
to the MMIO mirror of PCI config space in BAR0 in order to allow the
MSI interrupt for the device to retrigger. Older reports indicated a
write of 0xff to the (read-only) MSI capability ID register, while
more recently a write of 0x0 is observed at config space offset 0x704,
non-architected, extended config space of the device (BAR0 offset
0x88704). Virtualization of this range is only required for GeForce.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Alexey Kardashevskiy [Tue, 6 Feb 2018 18:08:27 +0000 (11:08 -0700)]
vfio/common: Remove redundant copy of local variable
There is already @hostwin in vfio_listener_region_add() so there is no
point in having the other one.
Fixes: 2e4109de8e58 ("vfio/spapr: Create DMA window dynamically (SPAPR IOMMU v2)")
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Eric Auger [Tue, 6 Feb 2018 18:08:26 +0000 (11:08 -0700)]
hw/vfio/platform: Init the interrupt mutex
Add the initialization of the mutex protecting the interrupt list.
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Alex Williamson [Tue, 6 Feb 2018 18:08:26 +0000 (11:08 -0700)]
vfio/pci: Allow relocating MSI-X MMIO
Recently proposed vfio-pci kernel changes (v4.16) remove the
restriction preventing userspace from mmap'ing PCI BARs in areas
overlapping the MSI-X vector table. This change is primarily intended
to benefit host platforms which make use of system page sizes larger
than the PCI spec recommendation for alignment of MSI-X data
structures (ie. not x86_64). In the case of POWER systems, the SPAPR
spec requires the VM to program MSI-X using hypercalls, rendering the
MSI-X vector table unused in the VM view of the device. However,
ARM64 platforms also support 64KB pages and rely on QEMU emulation of
MSI-X. Regardless of the kernel driver allowing mmaps overlapping
the MSI-X vector table, emulation of the MSI-X vector table also
prevents direct mapping of device MMIO spaces overlapping this page.
Thanks to the fact that PCI devices have a standard self discovery
mechanism, we can try to resolve this by relocating the MSI-X data
structures, either by creating a new PCI BAR or extending an existing
BAR and updating the MSI-X capability for the new location. There's
even a very slim chance that this could benefit devices which do not
adhere to the PCI spec alignment guidelines on x86_64 systems.
This new x-msix-relocation option accepts the following choices:
off: Disable MSI-X relocation, use native device config (default)
auto: Use a known good combination for the platform/device (none yet)
bar0..bar5: Specify the target BAR for MSI-X data structures
If compatible, the target BAR will either be created or extended and
the new portion will be used for MSI-X emulation.
The first obvious user question with this option is how to determine
whether a given platform and device might benefit from this option.
In most cases, the answer is that it won't, especially on x86_64.
Devices often dedicate an entire BAR to MSI-X and therefore no
performance sensitive registers overlap the MSI-X area. Take for
example:
# lspci -vvvs 0a:00.0
0a:00.0 Ethernet controller: Intel Corporation I350 Gigabit Network Connection
...
Region 0: Memory at
db680000 (32-bit, non-prefetchable) [size=512K]
Region 3: Memory at
db7f8000 (32-bit, non-prefetchable) [size=16K]
...
Capabilities: [70] MSI-X: Enable+ Count=10 Masked-
Vector table: BAR=3 offset=
00000000
PBA: BAR=3 offset=
00002000
This device uses the 16K bar3 for MSI-X with the vector table at
offset zero and the pending bits arrary at offset 8K, fully honoring
the PCI spec alignment guidance. The data sheet specifically refers
to this as an MSI-X BAR. This device would not see a benefit from
MSI-X relocation regardless of the platform, regardless of the page
size.
However, here's another example:
# lspci -vvvs 02:00.0
02:00.0 Serial Attached SCSI controller: xxxxxxxx
...
Region 0: I/O ports at c000 [size=256]
Region 1: Memory at
ef640000 (64-bit, non-prefetchable) [size=64K]
Region 3: Memory at
ef600000 (64-bit, non-prefetchable) [size=256K]
...
Capabilities: [c0] MSI-X: Enable+ Count=16 Masked-
Vector table: BAR=1 offset=
0000e000
PBA: BAR=1 offset=
0000f000
Here the MSI-X data structures are placed on separate 4K pages at the
end of a 64KB BAR. If our host page size is 4K, we're likely fine,
but at 64KB page size, MSI-X emulation at that location prevents the
entire BAR from being directly mapped into the VM address space.
Overlapping performance sensitive registers then starts to be a very
likely scenario on such a platform. At this point, the user could
enable tracing on vfio_region_read and vfio_region_write to determine
more conclusively if device accesses are being trapped through QEMU.
Upon finding a device and platform in need of MSI-X relocation, the
next problem is how to choose target PCI BAR to host the MSI-X data
structures. A few key rules to keep in mind for this selection
include:
* There are only 6 BAR slots, bar0..bar5
* 64-bit BARs occupy two BAR slots, 'lspci -vvv' lists the first slot
* PCI BARs are always a power of 2 in size, extending == doubling
* The maximum size of a 32-bit BAR is 2GB
* MSI-X data structures must reside in an MMIO BAR
Using these rules, we can evaluate each BAR of the second example
device above as follows:
bar0: I/O port BAR, incompatible with MSI-X tables
bar1: BAR could be extended, incurring another 64KB of MMIO
bar2: Unavailable, bar1 is 64-bit, this register is used by bar1
bar3: BAR could be extended, incurring another 256KB of MMIO
bar4: Unavailable, bar3 is 64bit, this register is used by bar3
bar5: Available, empty BAR, minimum additional MMIO
A secondary optimization we might wish to make in relocating MSI-X
is to minimize the additional MMIO required for the device, therefore
we might test the available choices in order of preference as bar5,
bar1, and finally bar3. The original proposal for this feature
included an 'auto' option which would choose bar5 in this case, but
various drivers have been found that make assumptions about the
properties of the "first" BAR or the size of BARs such that there
appears to be no foolproof automatic selection available, requiring
known good combinations to be sourced from users. This patch is
pre-enabled for an 'auto' selection making use of a validated lookup
table, but no entries are yet identified.
Tested-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Tested-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Alex Williamson [Tue, 6 Feb 2018 18:08:26 +0000 (11:08 -0700)]
qapi: Create DEFINE_PROP_OFF_AUTO_PCIBAR
Add an option which allows the user to specify a PCI BAR number,
including an 'off' and 'auto' selection.
Cc: Markus Armbruster <armbru@redhat.com>
Cc: Eric Blake <eblake@redhat.com>
Tested-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Tested-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Alex Williamson [Tue, 6 Feb 2018 18:08:25 +0000 (11:08 -0700)]
vfio/pci: Emulate BARs
The kernel provides similar emulation of PCI BAR register access to
QEMU, so up until now we've used that for things like BAR sizing and
storing the BAR address. However, if we intend to resize BARs or add
BARs that don't exist on the physical device, we need to switch to the
pure QEMU emulation of the BAR.
Tested-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Tested-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Alex Williamson [Tue, 6 Feb 2018 18:08:25 +0000 (11:08 -0700)]
vfio/pci: Add base BAR MemoryRegion
Add one more layer to our stack of MemoryRegions, this base region
allows us to register BARs independently of the vfio region or to
extend the size of BARs which do map to a region. This will be
useful when we want hypervisor defined BARs or sections of BARs,
for purposes such as relocating MSI-X emulation. We therefore call
msix_init() based on this new base MemoryRegion, while the quirks,
which only modify regions still operate on those sub-MemoryRegions.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Alex Williamson [Tue, 6 Feb 2018 18:08:25 +0000 (11:08 -0700)]
vfio/pci: Fixup VFIOMSIXInfo comment
The fields were removed in the referenced commit, but the comment
still mentions them.
Fixes: 2fb9636ebf24 ("vfio-pci: Remove unused fields from VFIOMSIXInfo")
Tested-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Tested-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Alexey Kardashevskiy [Tue, 6 Feb 2018 18:08:24 +0000 (11:08 -0700)]
spapr/iommu: Enable in-kernel TCE acceleration via VFIO KVM device
In order to enable TCE operations support in KVM, we have to inform
the KVM about VFIO groups being attached to specific LIOBNs;
the necessary bits are implemented already by IOMMU MR and VFIO.
This defines get_attr() for the SPAPR TCE IOMMU MR which makes VFIO
call the KVM_DEV_VFIO_GROUP_SET_SPAPR_TCE ioctl and establish
LIOBN-to-IOMMU link.
This changes spapr_tce_set_need_vfio() to avoid TCE table reallocation
if the kernel supports the TCE acceleration.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
[aw - remove unnecessary sys/ioctl.h include]
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Alexey Kardashevskiy [Tue, 6 Feb 2018 18:08:24 +0000 (11:08 -0700)]
vfio/spapr: Use iommu memory region's get_attr()
In order to enable TCE operations support in KVM, we have to inform
the KVM about VFIO groups being attached to specific LIOBNs. The KVM
already knows about VFIO groups, the only bit missing is which
in-kernel TCE table (the one with user visible TCEs) should update
the attached broups. There is an KVM_DEV_VFIO_GROUP_SET_SPAPR_TCE
attribute of the VFIO KVM device which receives a groupfd/tablefd couple.
This uses a new memory_region_iommu_get_attr() helper to get the IOMMU fd
and calls KVM to establish the link.
As get_attr() is not implemented yet, this should cause no behavioural
change.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Alexey Kardashevskiy [Tue, 6 Feb 2018 18:08:24 +0000 (11:08 -0700)]
memory/iommu: Add get_attr()
This adds get_attr() to IOMMUMemoryRegionClass, like
iommu_ops::domain_get_attr in the Linux kernel.
This defines the first attribute - IOMMU_ATTR_SPAPR_TCE_FD - which
will be used between the pSeries machine and VFIO-PCI.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Greg Kurz [Tue, 6 Feb 2018 11:23:30 +0000 (12:23 +0100)]
migration: incoming postcopy advise sanity checks
If postcopy-ram was set on the source but not on the destination,
migration doesn't occur, the destination prints an error and boots
the guest:
qemu-system-ppc64: Expected vmdescription section, but got 0
We end up with two running instances.
This behaviour was introduced in 2.11 by commit
58110f0acb1a "migration:
split common postcopy out of ram postcopy" to prepare ground for the
upcoming dirty bitmap postcopy support. It adds a new case where the
source may send an empty postcopy advise because dirty bitmap doesn't
need to check page sizes like RAM postcopy does.
If the source has enabled postcopy-ram, then it sends an advise with
the page size values. If the destination hasn't enabled postcopy-ram,
then loadvm_postcopy_handle_advise() leaves the page size values on
the stream and returns. This confuses qemu_loadvm_state() later on
and causes the destination to start execution.
As discussed several times, postcopy-ram should be enabled both sides
to be functional. This patch changes the destination to perform some
extra checks on the advise length to ensure this is the case. Otherwise
an error is returned and migration is aborted.
Reported-by: Balamuruhan S <bala24@linux.vnet.ibm.com>
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Daniel Henrique Barboza <danielhb@linux.vnet.ibm.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <
151791621042.19120.
3103118434734245776.stgit@bahia>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Ross Lagerwall [Wed, 1 Nov 2017 14:25:23 +0000 (14:25 +0000)]
migration: Don't leak IO channels
Since qemu_fopen_channel_{in,out}put take references on the underlying
IO channels, make sure to release our references to them.
Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com>
Message-Id: <
20171101142526.1006-2-ross.lagerwall@citrix.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Dr. David Alan Gilbert [Mon, 5 Feb 2018 09:13:37 +0000 (09:13 +0000)]
migration: Recover block devices if failure in device state
In
e91d895 I added the new pause-before-switchover mechanism
to allow migration completion to be delayed; this changes the
last state prior to completion to MIGRATE_STATUS_DEVICE rather
than MIGRATE_STATUS_ACTIVE.
Fix the failure path in migration_completion to recover the block
devices if it fails in MIGRATE_STATUS_DEVICE, not just the
MIGRATE_STATUS_ACTIVE that it previously had.
This corresponds to rh bz:
https://bugzilla.redhat.com/show_bug.cgi?id=
1538494
whose symptom is an occasional source crash on a failed migration.
Fixes: e91d8951d59d483f085f
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Juan Quintela [Fri, 5 Jan 2018 12:56:48 +0000 (13:56 +0100)]
tests: Adjust sleeps for migration test
Also reorder code to not sleep when event already happened.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Juan Quintela [Fri, 5 Jan 2018 12:35:56 +0000 (13:35 +0100)]
tests: Create migrate-start-postcopy command
This way, it is like the rest of commands
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Peter Maydell [Tue, 6 Feb 2018 14:21:40 +0000 (14:21 +0000)]
Merge remote-tracking branch 'remotes/rth/tags/pull-hppa-
20180204' into staging
hppa-softmmu update
# gpg: Signature made Sun 04 Feb 2018 22:20:40 GMT
# gpg: using RSA key
64DF38E8AF7E215F
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>"
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A 05C0 64DF 38E8 AF7E 215F
* remotes/rth/tags/pull-hppa-
20180204:
roms/seabios-hppa: Update submodule and image
tests: Enable boot-serial-test for hppa
hw/hppa: Use qemu_log_mask instead of fprintf to stderr
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Juan Quintela [Fri, 5 Jan 2018 12:18:49 +0000 (13:18 +0100)]
tests: Add deprecated commands migration test
We add deprecated commands on a new test, so we don't have to add it
on normal tests.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Juan Quintela [Fri, 5 Jan 2018 11:51:49 +0000 (12:51 +0100)]
tests: Use consistent names for migration
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Juan Quintela [Fri, 5 Jan 2018 11:49:59 +0000 (12:49 +0100)]
tests: Consolidate accelerators declaration
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Juan Quintela [Thu, 30 Nov 2017 20:12:03 +0000 (21:12 +0100)]
tests: Remove deprecated migration tests commands
We move to use migration_set_parameter() for everything.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Juan Quintela [Mon, 8 Jan 2018 17:58:17 +0000 (18:58 +0100)]
migration: Drop current address parameter from save_zero_page()
It already has RAMBlock and offset, it can calculate it itself.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Wei Wang [Mon, 22 Jan 2018 11:36:39 +0000 (19:36 +0800)]
migration: use s->threshold_size inside migration_update_counters
Fixes: b15df1ae50 ("migration: cleanup stats update into function")
The threshold size is changed to be recorded in s->threshold_size.
Signed-off-by: Wei Wang <wei.w.wang@intel.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Daniel Henrique Barboza [Fri, 26 Jan 2018 15:59:40 +0000 (13:59 -0200)]
migration/savevm.c: set MAX_VM_CMD_PACKAGED_SIZE to 1ul << 32
MAX_VM_CMD_PACKAGED_SIZE is a constant used in qemu_savevm_send_packaged
and loadvm_handle_cmd_packaged to determine whether a package is too
big to be sent or received. qemu_savevm_send_packaged is called inside
postcopy_start (migration/migration.c) to send the MigrationState
in a single blob to the destination, using the MIG_CMD_PACKAGED subcommand,
which will read it up using loadvm_handle_cmd_packaged. If the blob is
larger than MAX_VM_CMD_PACKAGED_SIZE, an error is thrown and the postcopy
migration is aborted. Both MAX_VM_CMD_PACKAGED_SIZE and MIG_CMD_PACKAGED
were introduced by commit
11cf1d984b ("MIG_CMD_PACKAGED: Send a packaged
chunk ..."). The constant has its original value of 1ul << 24 (16MB).
The current MAX_VM_CMD_PACKAGED_SIZE value is not enough to support postcopy
migration of bigger pseries guests. The blob size for a postcopy migration of
a pseries guest with the following setup:
qemu-system-ppc64 --nographic -vga none -machine pseries,accel=kvm -m 64G \
-smp 1,maxcpus=32 -device virtio-blk-pci,drive=rootdisk \
-drive file=f27.qcow2,if=none,cache=none,format=qcow2,id=rootdisk \
-netdev user,id=u1 -net nic,netdev=u1
Goes around 12MB. Bumping the RAM to 128G makes the blob sizes goes to 20MB.
With 256G the blob goes to 37MB - more than twice the current maximum size.
At this moment the pseries machine can handle guests with up to 1TB of RAM,
making this postcopy blob goes to 128MB of size approximately.
Following the discussions made in [1], there is a need to understand what
devices are aggressively consuming the blob in that manner and see if that
can be mitigated. Until then, we can set MAX_VM_CMD_PACKAGED_SIZE to the
maximum value allowed. Since the size is a 32 bit int variable, we can set
it as 1ul << 32, giving a maximum blob size of 4G that is enough to support
postcopy migration of 32TB RAM guests given the above constraints.
[1] https://lists.nongnu.org/archive/html/qemu-devel/2018-01/msg06313.html
Signed-off-by: Daniel Henrique Barboza <danielhb@linux.vnet.ibm.com>
Reported-by: Balamuruhan S <bala24@linux.vnet.ibm.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Dr. David Alan Gilbert [Fri, 15 Dec 2017 17:16:55 +0000 (17:16 +0000)]
migration: Route errors down through migration_channel_connect
Route async errors (especially from sockets) down through
migration_channel_connect and on to migrate_fd_connect where they
can be cleaned up.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Dr. David Alan Gilbert [Fri, 15 Dec 2017 17:16:54 +0000 (17:16 +0000)]
migration: Allow migrate_fd_connect to take an Error *
Allow whatever is performing the connection to pass migrate_fd_connect
an error to indicate there was a problem during connection, an allow
us to clean up.
The caller must free the error.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Daniel P. Berrange [Tue, 16 Jan 2018 13:42:17 +0000 (13:42 +0000)]
docker: change Fedora images to run with python3
Fedora has switched to Python 3 by default, so it makes sense to use that
for testing QEMU builds, so we get testing of Python 3 compatibility.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <
20180116134217.8725-15-berrange@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Daniel P. Berrange [Tue, 16 Jan 2018 13:42:16 +0000 (13:42 +0000)]
travis: improve python version test coverage
Currently travis declares ancient python 2.4 is desired. Update that to
2.6 which is the oldest version any targetted distros still needs. If we
just list a python 3 version at the top level this will double the
number of travis jobs we run which is unreasonable.
So arbitrarily pick the clang test matrix entries to build with python
3.0 and 3.6, to extend coverage of python versions, without increasing
job count or build time.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <
20180116134217.8725-14-berrange@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Daniel P. Berrange [Tue, 16 Jan 2018 13:42:15 +0000 (13:42 +0000)]
ui: update keycodemapdb to get py3 fixes
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <
20180116134217.8725-13-berrange@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Miika S [Tue, 16 Jan 2018 13:42:14 +0000 (13:42 +0000)]
input: add missing JIS keys to virtio input
keycodemapdb updated to add the QKeyCodes muhenkan and katakanahiragana
Signed-off-by: Miika S <miika9764@gmail.com>
Message-Id: <
20180116134217.8725-12-berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Amador Pahim [Mon, 22 Jan 2018 20:50:33 +0000 (21:50 +0100)]
qemu.py: don't launch again before shutdown()
If a VM is launched, files are created and a cleanup is required before
a new launch. This cleanup is executed by shutdown(), so shutdown() must
be called even if the VM is manually terminated (i.e. using kill).
This patch creates a control to make sure launch() will not be executed
again if shutdown() is not called after the previous launch().
Signed-off-by: Amador Pahim <apahim@redhat.com>
Message-Id: <
20180122205033.24893-7-apahim@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Amador Pahim [Mon, 22 Jan 2018 20:50:32 +0000 (21:50 +0100)]
qemu.py: cleanup redundant calls in launch()
Now that shutdown() is guaranteed to always execute self._load_io_log()
and self._post_shutdown(), their calls in 'except' became redundant and
we can safely replace it by a call to shutdown().
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Amador Pahim <apahim@redhat.com>
Message-Id: <
20180122205033.24893-6-apahim@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Amador Pahim [Mon, 22 Jan 2018 20:50:31 +0000 (21:50 +0100)]
qemu.py: use poll() instead of 'returncode'
The 'returncode' Popen attribute is not guaranteed to be updated. It
actually depends on a call to either poll(), wait() or communicate().
On the other hand, poll() will: "Check if child process has terminated.
Set and return returncode attribute."
Let's use the poll() to check whether the process is running and to get
the updated process exit code, when the process is finished.
Reviewed-by: Fam Zheng <famz@redhat.com>
eviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Amador Pahim <apahim@redhat.com>
Message-Id: <
20180122205033.24893-5-apahim@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Amador Pahim [Mon, 22 Jan 2018 20:50:30 +0000 (21:50 +0100)]
qemu.py: always cleanup on shutdown()
Currently we only cleanup on shutdown() if the VM is running.
To make sure we will always cleanup, this patch makes the
self._load_io_log() and the self._post_shutdown() to
always be called on shutdown(), regardless the VM running state.
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Amador Pahim <apahim@redhat.com>
Message-Id: <
20180122205033.24893-4-apahim@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Amador Pahim [Mon, 22 Jan 2018 20:50:29 +0000 (21:50 +0100)]
qemu.py: refactor launch()
This is just a refactor to separate the exception handler from the
actual launch procedure, improving the readability and making future
maintenances in this piece of code easier.
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Amador Pahim <apahim@redhat.com>
Message-Id: <
20180122205033.24893-3-apahim@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Amador Pahim [Mon, 22 Jan 2018 20:50:28 +0000 (21:50 +0100)]
qemu.py: better control of created files
To launch a VM, we need to create basically two files: the monitor
socket (if it's a UNIX socket) and the qemu log file.
For the qemu log file, we currently just open the path, which will
create the file if it does not exist or overwrite the file if it does
exist.
For the monitor socket, if it already exists, we are currently removing
it, even if it's not created by us.
This patch moves to _pre_launch() the responsibility to create a
temporary directory to host the files so we can remove the whole
directory on _post_shutdown().
Signed-off-by: Amador Pahim <apahim@redhat.com>
Message-Id: <
20180122205033.24893-2-apahim@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Amador Pahim [Tue, 14 Nov 2017 10:22:39 +0000 (11:22 +0100)]
qemu.py: remove unused import
Removing 'import sys' as it's not used anywhere.
Signed-off-by: Amador Pahim <apahim@redhat.com>
Message-Id: <
20171114102246.22221-2-apahim@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Daniel P. Berrange [Tue, 16 Jan 2018 13:42:13 +0000 (13:42 +0000)]
configure: allow use of python 3
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <
20180116134217.8725-11-berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Daniel P. Berrange [Tue, 16 Jan 2018 13:42:12 +0000 (13:42 +0000)]
scripts: ensure signrom treats data as bytes
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <
20180116134217.8725-10-berrange@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Daniel P. Berrange [Tue, 16 Jan 2018 13:42:11 +0000 (13:42 +0000)]
qapi: force a UTF-8 locale for running Python
Python2 did not validate locale correctness when reading input data, so
would happily read UTF-8 data in non-UTF-8 locales. Python3 is strict so
if you try to read UTF-8 data in the C locale, it will raise an error
for any UTF-8 bytes that aren't representable in 7-bit ascii encoding.
e.g.
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 54: ordinal not in range(128)
Traceback (most recent call last):
File "/tmp/qemu-test/src/scripts/qapi-commands.py", line 317, in <module>
schema = QAPISchema(input_file)
File "/tmp/qemu-test/src/scripts/qapi.py", line 1468, in __init__
parser = QAPISchemaParser(open(fname, 'r'))
File "/tmp/qemu-test/src/scripts/qapi.py", line 301, in __init__
previously_included)
File "/tmp/qemu-test/src/scripts/qapi.py", line 348, in _include
exprs_include = QAPISchemaParser(fobj, previously_included, info)
File "/tmp/qemu-test/src/scripts/qapi.py", line 271, in __init__
self.src = fp.read()
File "/usr/lib64/python3.5/encodings/ascii.py", line 26, in decode
return codecs.ascii_decode(input, self.errors)[0]
More background on this can be seen in
https://www.python.org/dev/peps/pep-0538/
Many distros support a new C.UTF-8 locale that is like the C locale,
but with UTF-8 instead of 7-bit ASCII. That is not entirely portable
though. This patch thus sets the LANG to "C", but overrides LC_CTYPE
to be en_US.UTF-8 locale. This gets us pretty close to C.UTF-8, but
in a way that should be portable to everywhere QEMU builds.
This patch only forces UTF-8 for QAPI scripts, since that is the one
showing the immediate error under Python3 with C locale, but potentially
we ought to force this for all python scripts used in the build process.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <
20180116134217.8725-9-berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Daniel P. Berrange [Tue, 16 Jan 2018 13:42:10 +0000 (13:42 +0000)]
qapi: ensure stable sort ordering when checking QAPI entities
Some early python 3.x versions will have different default
ordering when calling the 'values()' method on a dict, compared
to python 2.x and later 3.x versions. Explicitly sort the items
to get a stable ordering.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <
20180116134217.8725-8-berrange@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Daniel P. Berrange [Tue, 16 Jan 2018 13:42:09 +0000 (13:42 +0000)]
qapi: remove '-q' arg to diff when comparing QAPI output
When the qapi schema tests fail they merely print that the expected
output didn't match the actual output. This is largely useless when
trying diagnose what went wrong. Removing the '-q' arg to diff
means that it is still silent on successful tests, but when it
fails we'll see details of the incorrect output.
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <
20180116134217.8725-7-berrange@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Daniel P. Berrange [Tue, 16 Jan 2018 13:42:08 +0000 (13:42 +0000)]
qapi: Adapt to moved location of 'maketrans' function in py3
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <
20180116134217.8725-6-berrange@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Daniel P. Berrange [Tue, 16 Jan 2018 13:42:07 +0000 (13:42 +0000)]
qapi: adapt to moved location of StringIO module in py3
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <
20180116134217.8725-5-berrange@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Daniel P. Berrange [Tue, 16 Jan 2018 13:42:06 +0000 (13:42 +0000)]
qapi: Use OrderedDict from standard library if available
The OrderedDict class appeared in the 'collections' module
from python 2.7 onwards, so use that in preference to our
local backport if available.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <
20180116134217.8725-4-berrange@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Daniel P. Berrange [Tue, 16 Jan 2018 13:42:05 +0000 (13:42 +0000)]
qapi: use items()/values() intead of iteritems()/itervalues()
The iteritems()/itervalues() methods are gone in py3, but the
items()/values() methods are still around. The latter are less
efficient than the former in py2, but this has unmeasurably
small impact on QEMU build time, so taking portability over
efficiency is a net win.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <
20180116134217.8725-3-berrange@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Daniel P. Berrange [Tue, 16 Jan 2018 13:42:04 +0000 (13:42 +0000)]
qapi: convert to use python print function instead of statement
Python 3 no longer supports the bare "print" statement, it must be
called as a normal function with round brackets. It is possible to
opt-in to this new syntax with Python 2.6 onwards by importing the
"print_function" from the "__future__" module, making it easy to
support Python 2 and 3 in parallel.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <
20180116134217.8725-2-berrange@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Peter Maydell [Mon, 5 Feb 2018 09:31:37 +0000 (09:31 +0000)]
Merge remote-tracking branch 'remotes/stefanberger/tags/pull-tpm-2018-02-03-1' into staging
Merge tpm 2018/02/03 v1
# gpg: Signature made Sat 03 Feb 2018 14:02:35 GMT
# gpg: using RSA key
75AD65802A0B4211
# gpg: Good signature from "Stefan Berger <stefanb@linux.vnet.ibm.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: B818 B9CA DF90 89C2 D5CE C66B 75AD 6580 2A0B 4211
* remotes/stefanberger/tags/pull-tpm-2018-02-03-1:
tpm: tis: move one-line function into caller
MAINTAINERS: add pointer to tpm-next repository
tpm: wrap stX_be_p in tpm_cmd_set_XYZ functions
tpm: Split off tpm_crb_reset function
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Richard Henderson [Sun, 4 Feb 2018 22:08:37 +0000 (14:08 -0800)]
roms/seabios-hppa: Update submodule and image
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Richard Henderson [Sun, 4 Feb 2018 06:46:15 +0000 (22:46 -0800)]
tests: Enable boot-serial-test for hppa
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Richard Henderson [Sun, 4 Feb 2018 06:41:41 +0000 (22:41 -0800)]
hw/hppa: Use qemu_log_mask instead of fprintf to stderr
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reported-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Stefan Berger [Fri, 2 Feb 2018 13:39:18 +0000 (08:39 -0500)]
tpm: tis: move one-line function into caller
Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Stefan Berger [Fri, 2 Feb 2018 11:51:38 +0000 (06:51 -0500)]
MAINTAINERS: add pointer to tpm-next repository
Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Stefan Berger [Thu, 1 Feb 2018 23:05:10 +0000 (18:05 -0500)]
tpm: wrap stX_be_p in tpm_cmd_set_XYZ functions
Wrap the calls to stl_be_p and stw_be_p in tpm_cmd_set_XYZ functions
that are similar to existing getters.
Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Stefan Berger [Thu, 1 Feb 2018 22:55:50 +0000 (17:55 -0500)]
tpm: Split off tpm_crb_reset function
Split off the tpm_crb_reset function part from tpm_crb_realize
that we need to run every time the machine resets.
Also register our reset function with the system since TYPE_DEVICE
seems to not get a reset otherwise.
Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Peter Maydell [Fri, 2 Feb 2018 18:54:11 +0000 (18:54 +0000)]
Merge remote-tracking branch 'remotes/kraxel/tags/ui-
20180202-pull-request' into staging
ui: use QIONetListener in vnc, bugfixes for sdl1 and vnc.
# gpg: Signature made Fri 02 Feb 2018 07:17:36 GMT
# gpg: using RSA key
4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg: aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg: aka "Gerd Hoffmann (private) <kraxel@gmail.com>"
# Primary key fingerprint: A032 8CFF B93A 17A7 9901 FE7D 4CB6 D8EE D3E8 7138
* remotes/kraxel/tags/ui-
20180202-pull-request:
ui: correctly advance output buffer when writing SASL data
ui: convert VNC server to QIONetListener
ui: fix mixup between qnum and qcode in SDL1 key handling
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Peter Maydell [Fri, 2 Feb 2018 17:24:00 +0000 (17:24 +0000)]
Merge remote-tracking branch 'remotes/kraxel/tags/vga-
20180202-pull-request' into staging
virtio-gpu: disallow vIOMMU
# gpg: Signature made Fri 02 Feb 2018 08:31:52 GMT
# gpg: using RSA key
4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg: aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg: aka "Gerd Hoffmann (private) <kraxel@gmail.com>"
# Primary key fingerprint: A032 8CFF B93A 17A7 9901 FE7D 4CB6 D8EE D3E8 7138
* remotes/kraxel/tags/vga-
20180202-pull-request:
virtio-gpu: disallow vIOMMU
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Peter Maydell [Fri, 2 Feb 2018 16:26:41 +0000 (16:26 +0000)]
Merge remote-tracking branch 'remotes/gkurz/tags/for-upstream' into staging
This series is mostly about 9p request cancellation. It fixes a
long standing bug (read "specification violation") where the server
would send an invalid response when the client has cancelled an
in-flight request. This was causing annoying spurious EINTR returns
in linux. The fix comes with some related testing in QTEST.
Other patches are code cleanup and improvements.
# gpg: Signature made Fri 02 Feb 2018 10:16:03 GMT
# gpg: using RSA key
71D4D5E5822F73D6
# gpg: Good signature from "Greg Kurz <groug@kaod.org>"
# gpg: aka "Gregory Kurz <gregory.kurz@free.fr>"
# gpg: aka "[jpeg image of size 3330]"
# Primary key fingerprint: B482 8BAF 9431 40CE F2A3 4910 71D4 D5E5 822F 73D6
* remotes/gkurz/tags/for-upstream:
tests/virtio-9p: explicitly handle potential integer overflows
tests: virtio-9p: add FLUSH operation test
libqos/virtio: return length written into used descriptor
tests: virtio-9p: add WRITE operation test
tests: virtio-9p: add LOPEN operation test
tests: virtio-9p: use the synth backend
tests: virtio-9p: wait for completion in the test code
tests: virtio-9p: move request tag to the test functions
9pfs: Correctly handle cancelled requests
9pfs: drop v9fs_register_transport()
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Peter Maydell [Fri, 2 Feb 2018 15:33:57 +0000 (15:33 +0000)]
Merge remote-tracking branch 'remotes/kraxel/tags/audio-
20180202-pull-request' into staging
audio: two small fixes.
# gpg: Signature made Fri 02 Feb 2018 07:49:20 GMT
# gpg: using RSA key
4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg: aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg: aka "Gerd Hoffmann (private) <kraxel@gmail.com>"
# Primary key fingerprint: A032 8CFF B93A 17A7 9901 FE7D 4CB6 D8EE D3E8 7138
* remotes/kraxel/tags/audio-
20180202-pull-request:
hw/audio/sb16.c: change dolog() to qemu_log_mask()
hw/audio/wm8750: move WM8750 declarations from i2c/i2c.h to audio/wm8750.h
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Peter Maydell [Fri, 2 Feb 2018 14:10:13 +0000 (14:10 +0000)]
Merge remote-tracking branch 'remotes/cminyard/tags/for-release-
20180201' into staging
Lots of litte miscellaneous fixes for the IPMI code, plus
add me as the IPMI maintainer.
# gpg: Signature made Thu 01 Feb 2018 18:44:55 GMT
# gpg: using RSA key
61F38C90919BFF81
# gpg: Good signature from "Corey Minyard <cminyard@mvista.com>"
# gpg: aka "Corey Minyard <minyard@acm.org>"
# gpg: aka "Corey Minyard <corey@minyard.net>"
# gpg: aka "Corey Minyard <minyard@mvista.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: FD0D 5CE6 7CE0 F59A 6688 2686 61F3 8C90 919B FF81
* remotes/cminyard/tags/for-release-
20180201:
ipmi: Allow BMC device properties to be set
ipmi: disable IRQ and ATN on an external disconnect
ipmi: Fix macro issues
ipmi: Add the platform event message command
ipmi: Don't set the timestamp on add events that don't have it
ipmi: Fix SEL get/set time commands
Add maintainer for the IPMI code
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Peter Maydell [Fri, 2 Feb 2018 10:57:50 +0000 (10:57 +0000)]
Merge remote-tracking branch 'remotes/elmarco/tags/dump-pull-request' into staging
# gpg: Signature made Thu 01 Feb 2018 11:15:42 GMT
# gpg: using RSA key
DAE8E10975969CE5
# gpg: Good signature from "Marc-André Lureau <marcandre.lureau@redhat.com>"
# gpg: aka "Marc-André Lureau <marcandre.lureau@gmail.com>"
# Primary key fingerprint: 87A9 BD93 3F87 C606 D276 F62D DAE8 E109 7596 9CE5
* remotes/elmarco/tags/dump-pull-request:
dump-guest-memory.py: skip vmcoreinfo section if not available
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Greg Kurz [Thu, 1 Feb 2018 20:21:28 +0000 (21:21 +0100)]
tests/virtio-9p: explicitly handle potential integer overflows
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Greg Kurz [Thu, 1 Feb 2018 20:21:28 +0000 (21:21 +0100)]
tests: virtio-9p: add FLUSH operation test
The idea is to send a victim request that will possibly block in the
server and to send a flush request to cancel the victim request.
This patch adds two test to verifiy that:
- the server does not reply to a victim request that was actually
cancelled
- the server replies to the flush request after replying to the
victim request if it could not cancel it
9p request cancellation reference:
http://man.cat-v.org/plan_9/5/flush
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
(groug, change the test to only write a single byte to avoid
any alignment or endianess consideration)
Greg Kurz [Thu, 1 Feb 2018 20:21:28 +0000 (21:21 +0100)]
libqos/virtio: return length written into used descriptor
When a 9p request is flushed (ie, cancelled) by the guest, the device
is expected to simply mark the request as used, without sending a 9p
reply (ie, without writing anything into the used buffer).
To be able to test this, we need access to the length written by the
device into the used descriptor. This patch adds a uint32_t * argument
to qvirtqueue_get_buf() and qvirtio_wait_used_elem() for this purpose.
All existing users are updated accordingly.
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Peter Maydell [Fri, 2 Feb 2018 09:53:15 +0000 (09:53 +0000)]
Merge remote-tracking branch 'remotes/cody/tags/block-pull-request' into staging
# gpg: Signature made Thu 01 Feb 2018 04:05:22 GMT
# gpg: using RSA key
BDBE7B27C0DE3057
# gpg: Good signature from "Jeffrey Cody <jcody@redhat.com>"
# gpg: aka "Jeffrey Cody <jeff@codyprime.org>"
# gpg: aka "Jeffrey Cody <codyprime@gmail.com>"
# Primary key fingerprint: 9957 4B4D 3474 90E7 9D98 D624 BDBE 7B27 C0DE 3057
* remotes/cody/tags/block-pull-request:
iotests: Make 200 run on tmpfs
block/ssh: fix possible segmentation fault when .desc is not null-terminated
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Peter Xu [Wed, 31 Jan 2018 04:04:01 +0000 (12:04 +0800)]
virtio-gpu: disallow vIOMMU
virtio-gpu has special code path that bypassed vIOMMU protection. So
for now let's disable iommu_platform for the device until we fully
support that (if needed).
After the patch, both virtio-vga and virtio-gpu won't allow to boot with
iommu_platform parameter set.
CC: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-id:
20180131040401.3550-1-peterx@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
John Arbuckle [Thu, 1 Feb 2018 17:27:44 +0000 (12:27 -0500)]
hw/audio/sb16.c: change dolog() to qemu_log_mask()
Changes all the occurrances of dolog() to qemu_log_mask().
Signed-off-by: John Arbuckle <programmingkidx@gmail.com>
Message-id:
20180201172744.7504-1-programmingkidx@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Philippe Mathieu-Daudé [Tue, 19 Sep 2017 12:30:53 +0000 (09:30 -0300)]
hw/audio/wm8750: move WM8750 declarations from i2c/i2c.h to audio/wm8750.h
while here use TYPE_WM8750 and declare a data_req_cb() typedef.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id:
20170919123053.32675-1-f4bug@amsat.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Daniel P. Berrangé [Thu, 1 Feb 2018 15:58:41 +0000 (15:58 +0000)]
ui: correctly advance output buffer when writing SASL data
In this previous commit:
commit
8f61f1c5a6bc06438a1172efa80bc7606594fa07
Author: Daniel P. Berrange <berrange@redhat.com>
Date: Mon Dec 18 19:12:20 2017 +0000
ui: track how much decoded data we consumed when doing SASL encoding
I attempted to fix a flaw with tracking how much data had actually been
processed when encoding with SASL. With that flaw, the VNC server could
mistakenly discard queued data that had not been sent.
The fix was not quite right though, because it merely decremented the
vs->output.offset value. This is effectively discarding data from the
end of the pending output buffer. We actually need to discard data from
the start of the pending output buffer. We also want to free memory that
is no longer required. The correct way to handle this is to use the
buffer_advance() helper method instead of directly manipulating the
offset value.
Reported-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Message-id:
20180201155841.27509-1-berrange@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Daniel P. Berrange [Thu, 1 Feb 2018 16:45:14 +0000 (16:45 +0000)]
ui: convert VNC server to QIONetListener
The VNC server already has the ability to listen on multiple sockets.
Converting it to use the QIONetListener APIs though, will reduce the
amount of code in the VNC server and improve the clarity of what is
left.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-id:
20180201164514.10330-1-berrange@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Daniel P. Berrangé [Thu, 1 Feb 2018 18:00:33 +0000 (18:00 +0000)]
ui: fix mixup between qnum and qcode in SDL1 key handling
The previous commit:
commit
2ec78706d188df7d3dab43d07b19b05ef7800a44
Author: Daniel P. Berrange <berrange@redhat.com>
Date: Wed Jan 17 16:47:15 2018 +0000
ui: convert GTK and SDL1 frontends to keycodemapdb
changed the x_keymap.c keymap so that its target was qcodes instead of
qnums. It updated the GTK frontend to take account of this change, but
forgot to update the SDL1 frontend. Thus the SDL frontend was getting
qcodes but dispatching them as if they were qnums. IOW, keyboard input
was completely hosed with SDL1. Since the keyboard layout tables are
still all based on qnums, it is easier to just keep SDL1 using qnums as
it will be deleted in a few releases time.
Reported-by: BALATON Zoltan <balaton@eik.bme.hu>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Tested-by: BALATON Zoltan <balaton@eik.bme.hu>
Message-id:
20180201180033.14255-1-berrange@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Greg Kurz [Thu, 1 Feb 2018 20:21:28 +0000 (21:21 +0100)]
tests: virtio-9p: add WRITE operation test
Trivial test of a successful write.
Signed-off-by: Greg Kurz <groug@kaod.org>
(groug, handle potential overflow when computing request size,
add missing g_free(buf),
backend handles one written byte at a time to validate
the server doesn't do short-reads)
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Greg Kurz [Thu, 1 Feb 2018 20:21:28 +0000 (21:21 +0100)]
tests: virtio-9p: add LOPEN operation test
Trivial test of a successful open.
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Greg Kurz [Thu, 1 Feb 2018 20:21:27 +0000 (21:21 +0100)]
tests: virtio-9p: use the synth backend
The purpose of virtio-9p-test is to test the virtio-9p device, especially
the 9p server state machine. We don't really care what fsdev backend we're
using. Moreover, if we want to be able to test the flush request or a
device reset with in-flights I/O, it is close to impossible to achieve
with a physical backend because we cannot ask it reliably to put an I/O
on hold at a specific point in time.
Fortunately, we can do that with the synthetic backend, which allows to
register callbacks on read/write accesses to a specific file. This will
be used by a later patch to test the 9P flush request.
The walk request test is converted to using the synth backend.
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Greg Kurz [Thu, 1 Feb 2018 20:21:27 +0000 (21:21 +0100)]
tests: virtio-9p: wait for completion in the test code
In order to test request cancellation, we will need to send multiple
requests and wait for the associated replies. Since we poll the ISR
to know if a request completed, we may have several replies to parse
when we detect ISR was set to 1.
This patch moves the waiting out of the reply parsing path, up into
the functional tests.
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Greg Kurz [Thu, 1 Feb 2018 20:21:27 +0000 (21:21 +0100)]
tests: virtio-9p: move request tag to the test functions
It doesn't really makes sense to hide the request tag from the test
functions. It prevents to test the 9p server behavior when passed
a wrong tag (ie, still in use or different from P9_NOTAG for a
version request). Also the spec says that a tag is reusable as soon
as the corresponding request was replied or flushed: no need to
always increment tags like we do now. And finaly, an upcoming test
of the flush command will need to manipulate tags explicitely.
This simply changes all request functions to have a tag argument.
Except for the version request which needs P9_NOTAG, all other
tests can pass 0 since they wait for the reply before sending
another request.
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Keno Fischer [Thu, 1 Feb 2018 20:21:27 +0000 (21:21 +0100)]
9pfs: Correctly handle cancelled requests
# Background
I was investigating spurious non-deterministic EINTR returns from
various 9p file system operations in a Linux guest served from the
qemu 9p server.
## EINTR, ERESTARTSYS and the linux kernel
When a signal arrives that the Linux kernel needs to deliver to user-space
while a given thread is blocked (in the 9p case waiting for a reply to its
request in 9p_client_rpc -> wait_event_interruptible), it asks whatever
driver is currently running to abort its current operation (in the 9p case
causing the submission of a TFLUSH message) and return to user space.
In these situations, the error message reported is generally ERESTARTSYS.
If the userspace processes specified SA_RESTART, this means that the
system call will get restarted upon completion of the signal handler
delivery (assuming the signal handler doesn't modify the process state
in complicated ways not relevant here). If SA_RESTART is not specified,
ERESTARTSYS gets translated to EINTR and user space is expected to handle
the restart itself.
## The 9p TFLUSH command
The 9p TFLUSH commands requests that the server abort an ongoing operation.
The man page [1] specifies:
```
If it recognizes oldtag as the tag of a pending transaction, it should
abort any pending response and discard that tag.
[...]
When the client sends a Tflush, it must wait to receive the corresponding
Rflush before reusing oldtag for subsequent messages. If a response to the
flushed request is received before the Rflush, the client must honor the
response as if it had not been flushed, since the completed request may
signify a state change in the server
```
In particular, this means that the server must not send a reply with the
orignal tag in response to the cancellation request, because the client is
obligated to interpret such a reply as a coincidental reply to the original
request.
# The bug
When qemu receives a TFlush request, it sets the `cancelled` flag on the
relevant pdu. This flag is periodically checked, e.g. in
`v9fs_co_name_to_path`, and if set, the operation is aborted and the error
is set to EINTR. However, the server then violates the spec, by returning
to the client an Rerror response, rather than discarding the message
entirely. As a result, the client is required to assume that said Rerror
response is a result of the original request, not a result of the
cancellation and thus passes the EINTR error back to user space.
This is not the worst thing it could do, however as discussed above, the
correct error code would have been ERESTARTSYS, such that user space
programs with SA_RESTART set get correctly restarted upon completion of
the signal handler.
Instead, such programs get spurious EINTR results that they were not
expecting to handle.
It should be noted that there are plenty of user space programs that do not
set SA_RESTART and do not correctly handle EINTR either. However, that is
then a userspace bug. It should also be noted that this bug has been
mitigated by a recent commit to the Linux kernel [2], which essentially
prevents the kernel from sending Tflush requests unless the process is about
to die (in which case the process likely doesn't care about the response).
Nevertheless, for older kernels and to comply with the spec, I believe this
change is beneficial.
# Implementation
The fix is fairly simple, just skipping notification of a reply if
the pdu was previously cancelled. We do however, also notify the transport
layer that we're doing this, so it can clean up any resources it may be
holding. I also added a new trace event to distinguish
operations that caused an error reply from those that were cancelled.
One complication is that we only omit sending the message on EINTR errors in
order to avoid confusing the rest of the code (which may assume that a
client knows about a fid if it sucessfully passed it off to pud_complete
without checking for cancellation status). This does mean that if the server
acts upon the cancellation flag, it always needs to set err to EINTR. I
believe this is true of the current code.
[1] https://9fans.github.io/plan9port/man/man9/flush.html
[2] https://github.com/torvalds/linux/commit/
9523feac272ccad2ad8186ba4fcc891
Signed-off-by: Keno Fischer <keno@juliacomputing.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
[groug, send a zero-sized reply instead of detaching the buffer]
Signed-off-by: Greg Kurz <groug@kaod.org>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Greg Kurz [Thu, 1 Feb 2018 20:21:27 +0000 (21:21 +0100)]
9pfs: drop v9fs_register_transport()
No good reasons to do this outside of v9fs_device_realize_common().
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Marc-André Lureau [Wed, 31 Jan 2018 10:37:24 +0000 (11:37 +0100)]
dump-guest-memory.py: skip vmcoreinfo section if not available
On some architectures, qemu doesn't support vmcoreinfo device,
and dump-guest-memory fails:
(gdb) dump-guest-memory /tmp/vmcore ppc64-le
guest RAM blocks:
target_start target_end host_addr message count
---------------- ---------------- ---------------- ------- -----
0000000000000000 0000000200000000 00003ffd86980000 added 1
0000200080000000 0000200080800000 00003ffd86170000 added 2
Python Exception <class 'gdb.error'> No symbol "vmcoreinfo_realize" in current context.:
Error occurred in Python command: No symbol "vmcoreinfo_realize" in current context.
Check that vmcoreinfo_realize symbol exists before evaluating an
expression with it.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Max Reitz [Wed, 17 Jan 2018 13:50:15 +0000 (14:50 +0100)]
iotests: Make 200 run on tmpfs
200 currently fails on tmpfs because it sets cache=none. However,
without that (and aio=native), the test still works now and it fails
before Jeff's series (on
fc7dbc119e0852a70dc9fa68bb41a318e49e4cd6). So
we can probably remove the aio=native safely, and replace cache=none by
cache=$CACHEMODE.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Message-id:
20180117135015.15051-1-mreitz@redhat.com
Signed-off-by: Jeff Cody <jcody@redhat.com>
Murilo Opsfelder Araujo [Fri, 5 Jan 2018 14:44:40 +0000 (12:44 -0200)]
block/ssh: fix possible segmentation fault when .desc is not null-terminated
This patch prevents a possible segmentation fault when .desc members are checked
against NULL.
The ssh_runtime_opts was added by commit
8a6a80896d6af03b8ee0c17cdf37219eca2588a7 ("block/ssh: Use QemuOpts for runtime
options").
This fix was inspired by
http://lists.nongnu.org/archive/html/qemu-devel/2018-01/msg00883.html.
Fixes: 8a6a80896d6af03b8ee0c17cdf37219eca2588a7 ("block/ssh: Use QemuOpts for runtime options")
Cc: Max Reitz <mreitz@redhat.com>
Cc: Eric Blake <eblake@redhat.com>
Signed-off-by: Murilo Opsfelder Araujo <muriloo@linux.vnet.ibm.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Jeff Cody <jcody@redhat.com>
Peter Maydell [Wed, 31 Jan 2018 15:50:29 +0000 (15:50 +0000)]
Merge remote-tracking branch 'remotes/rth/tags/pull-hppa-
20180131' into staging
Implement hppa-softmmu
# gpg: Signature made Wed 31 Jan 2018 14:19:06 GMT
# gpg: using RSA key 0x64DF38E8AF7E215F
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>"
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A 05C0 64DF 38E8 AF7E 215F
* remotes/rth/tags/pull-hppa-
20180131: (43 commits)
target/hppa: Implement PROBE for system mode
target/hppa: Fix 32-bit operand masks for 0E FCVT
hw/hppa: Add MAINTAINERS entry
pc-bios: Add hppa-firmware.img and git submodule
hw/hppa: Implement DINO system board
target/hppa: Enable MTTCG
target/hppa: Implement STWA
target/hppa: Implement a pause instruction
target/hppa: Implement LDSID for system mode
target/hppa: Fix comment
target/hppa: Increase number of temp regs
target/hppa: Only use EXCP_DTLB_MISS
target/hppa: Implement B,GATE insn
target/hppa: Add migration for the cpu
target/hppa: Add system registers to gdbstub
target/hppa: Optimize for flat addressing space
target/hppa: Implement halt and reset instructions
target/hppa: Implement SYNCDMA insn
target/hppa: Implement LCI
target/hppa: Implement LPA
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Richard Henderson [Wed, 24 Jan 2018 23:03:25 +0000 (15:03 -0800)]
target/hppa: Implement PROBE for system mode
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Richard Henderson [Wed, 24 Jan 2018 22:24:53 +0000 (14:24 -0800)]
target/hppa: Fix 32-bit operand masks for 0E FCVT
We masked the wrong bits, which prevented some of the
32-bit R registers. E.g. "fcnvxf,sgl,sgl fr22R,fr6R".
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Richard Henderson [Sun, 21 Jan 2018 22:05:03 +0000 (14:05 -0800)]
hw/hppa: Add MAINTAINERS entry
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Richard Henderson [Sun, 21 Jan 2018 21:04:45 +0000 (13:04 -0800)]
pc-bios: Add hppa-firmware.img and git submodule
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Helge Deller [Sun, 8 Oct 2017 20:47:27 +0000 (16:47 -0400)]
hw/hppa: Implement DINO system board
Now that we have the prerequisites in target/hppa/,
implement the hardware for a PA7100LC.
This also enables build for hppa-softmmu.
Signed-off-by: Helge Deller <deller@gmx.de>
[rth: Since it is all new code, squashed all branch development
withing hw/hppa/ to a single patch.]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Richard Henderson [Sun, 7 Jan 2018 00:02:27 +0000 (16:02 -0800)]
target/hppa: Enable MTTCG
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Richard Henderson [Sat, 6 Jan 2018 23:30:45 +0000 (15:30 -0800)]
target/hppa: Implement STWA
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Richard Henderson [Fri, 5 Jan 2018 00:49:29 +0000 (16:49 -0800)]
target/hppa: Implement a pause instruction
This is an extension to the base ISA, but we can use this in
the kernel idle loop to reduce the host cpu time consumed.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Helge Deller [Tue, 2 Jan 2018 20:31:45 +0000 (21:31 +0100)]
target/hppa: Implement LDSID for system mode
Signed-off-by: Helge Deller <deller@gmx.de>
Message-Id: <
20180102203145.GA17059@ls3530.fritz.box>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Helge Deller [Tue, 12 Dec 2017 21:23:19 +0000 (22:23 +0100)]
target/hppa: Fix comment
Signed-off-by: Helge Deller <deller@gmx.de>
Message-Id: <
20171212212319.GA31494@ls3530.fritz.box>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Richard Henderson [Wed, 1 Nov 2017 12:03:09 +0000 (05:03 -0700)]
target/hppa: Increase number of temp regs
HP-UX 10.20 CD contains "add r0, r0, r27" in a delay slot,
which uses at least 5 temps.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Richard Henderson [Fri, 29 Dec 2017 03:26:52 +0000 (19:26 -0800)]
target/hppa: Only use EXCP_DTLB_MISS
Unknown why this works, but if we return EXCP_ITLB_MISS we
will triple-fault the first userland instruction fetch.
Is it something to do with having a combined I/DTLB?
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Richard Henderson [Fri, 15 Dec 2017 20:37:26 +0000 (14:37 -0600)]
target/hppa: Implement B,GATE insn
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Richard Henderson [Mon, 20 Nov 2017 10:06:04 +0000 (11:06 +0100)]
target/hppa: Add migration for the cpu
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Richard Henderson [Tue, 7 Nov 2017 04:42:14 +0000 (05:42 +0100)]
target/hppa: Add system registers to gdbstub
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>