target/alpha: Merge several flag bytes into ENV->FLAGS
The flags are arranged such that we can manipulate them either
a whole, or as individual bytes. The computation within
cpu_get_tb_cpu_state is now reduced to a single load and mask.
* remotes/ericb/tags/pull-nbd-2017-07-17:
nbd: Fix server reply to NBD_OPT_EXPORT_NAME of older clients
nbd: Trace client command being sent
nbd: Fix iotests failure due to changed client error message
Peter Maydell [Tue, 18 Jul 2017 14:24:11 +0000 (15:24 +0100)]
Merge remote-tracking branch 'remotes/ehabkost/tags/x86-and-machine-pull-request' into staging
x86 and machine queue, 2017-07-17
# gpg: Signature made Mon 17 Jul 2017 19:46:14 BST
# gpg: using RSA key 0x2807936F984DC5A6
# gpg: Good signature from "Eduardo Habkost <[email protected]>"
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF D1AA 2807 936F 984D C5A6
* remotes/ehabkost/tags/x86-and-machine-pull-request:
qmp: Include parent type on 'qom-list-types' output
qmp: Include 'abstract' field on 'qom-list-types' output
tests: Simplify abstract-interfaces check with a helper
i386: add Skylake-Server cpu model
i386: Update comment about XSAVES on Skylake-Client
i386: expose "TCGTCGTCGTCG" in the 0x40000000 CPUID leaf
fw_cfg: move QOM type defines and fw_cfg types into fw_cfg.h
fw_cfg: move qdev_init_nofail() from fw_cfg_init1() to callers
fw_cfg: switch fw_cfg_find() to locate the fw_cfg device by type rather than path
qom: Fix ambiguous path detection when ambiguous=NULL
Revert "machine: Convert abstract typename on compat_props to subclass names"
test-qdev-global-props: Test global property ordering
qdev: fix the order compat and global properties are applied
tests: Test case for object_resolve_path*()
device-crash-test: Fix regexp on whitelist
Peter Maydell [Tue, 18 Jul 2017 13:14:32 +0000 (14:14 +0100)]
Merge remote-tracking branch 'remotes/mdroth/tags/qga-pull-2017-07-17-v2-tag' into staging
qemu-ga patch queue
* new command: qemu-get-osinfo
* build fix for OpenBSD
* better error-reporting for failure on keyfile dump
* remove redundant initialization of qa_state global
* include libpcre in w32 package
* w32 localization fixes for service installation/registration
v2:
* fix build issue with older GCCs introduced with guest_get_osinfo
* relocated some declarations in guest_get_osinfo
* remotes/mdroth/tags/qga-pull-2017-07-17-v2-tag:
test-qga: add test for guest-get-osinfo
test-qga: pass environemnt to qemu-ga
qemu-ga: add guest-get-osinfo command
qga: report error on keyfile dump error
qga-win32: remove a redundancy code
qemu-ga: check if utmpx.h is available on the system
qemu-ga: add missing libpcre to MSI build
qga-win: fix installation on localized windows
* remotes/stefanha/tags/block-pull-request:
block: fix shadowed variable in bdrv_co_pdiscard
util/aio-win32: Only select on what we are actually waiting for
Qemu-ga was modified to accept QGA_OS_RELEASE environment variable. If
the variable is defined it is interpreted as path to the os-release file
and it is parsed instead of the default paths.
Add a new 'guest-get-osinfo' command for reporting basic information of
the guest operating system. This includes machine architecture,
version and release of the kernel and several fields from os-release
file if it is present (as defined in [1]).
Signed-off-by: Vinzenz Feenstra <[email protected]> Signed-off-by: Tomáš Golembiovský <[email protected]>
* moved declarations to beginning of functions
* dropped unecessary initialization of struct utsname Signed-off-by: Michael Roth <[email protected]>
Peter Maydell [Tue, 18 Jul 2017 10:41:03 +0000 (11:41 +0100)]
Merge remote-tracking branch 'remotes/aurel/tags/pull-target-mips-20170717' into staging
Queued target/mips patches
# gpg: Signature made Mon 17 Jul 2017 15:50:27 BST
# gpg: using RSA key 0xBA9C78061DDD8C9B
# gpg: Good signature from "Aurelien Jarno <[email protected]>"
# gpg: aka "Aurelien Jarno <[email protected]>"
# gpg: aka "Aurelien Jarno <[email protected]>"
# 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: 7746 2642 A9EF 94FD 0F77 196D BA9C 7806 1DDD 8C9B
* remotes/aurel/tags/pull-target-mips-20170717:
target/mips: optimize WSBH, DSBH and DSHD
mips: set CP0 Debug DExcCode for SDBBP instruction
Peter Maydell [Tue, 18 Jul 2017 09:35:06 +0000 (10:35 +0100)]
Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20170717' into staging
target-arm queue:
* new model of the ARM MPS2/MPS2+ FPGA based development board
* clean up DISAS_* exit conditions and fix various regressions
since commits e75449a3468a6b28c7b5 (in particular including
ones which broke OP-TEE guests)
* make Cortex-M3 and M4 correctly default to 8 PMSA regions
* remotes/pmaydell/tags/pull-target-arm-20170717:
MAINTAINERS: Add entries for MPS2 board
hw/arm/mps2: Add ethernet
hw/arm/mps2: Add SCC
hw/misc/mps2_scc: Implement MPS2 Serial Communication Controller
hw/arm/mps2: Add timers
hw/char/cmsdk-apb-timer: Implement CMSDK APB timer device
hw/arm/mps2: Add UARTs
hw/char/cmsdk-apb-uart.c: Implement CMSDK APB UART
hw/arm/mps2: Implement skeleton mps2-an385 and mps2-an511 board models
target/arm: use DISAS_EXIT for eret handling
target/arm: use gen_goto_tb for ISB handling
target/arm/translate: ensure gen_goto_tb sets exit flags
target/arm/translate.h: expand comment on DISAS_EXIT
target/arm/translate: make DISAS_UPDATE match declared semantics
include/exec/exec-all: document common exit conditions
target/arm: Make Cortex-M3 and M4 default to 8 PMSA regions
qdev: support properties which don't set a default value
qdev-properties.h: Explicitly set the default value for arraylen properties
Peter Maydell [Tue, 18 Jul 2017 08:16:43 +0000 (09:16 +0100)]
Merge remote-tracking branch 'remotes/jasowang/tags/net-pull-request' into staging
# gpg: Signature made Mon 17 Jul 2017 13:17:17 BST
# gpg: using RSA key 0xEF04965B398D6211
# gpg: Good signature from "Jason Wang (Jason Wang on RedHat) <[email protected]>"
# 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: 215D 46F4 8246 689E C77F 3562 EF04 965B 398D 6211
* remotes/jasowang/tags/net-pull-request:
virtio-net: fix offload ctrl endian
virtion-net: Prefer is_power_of_2()
docs/colo-proxy.txt: Update colo-proxy usage of net driver with vnet_header
net/filter-rewriter.c: Make filter-rewriter support vnet_hdr_len
net/colo-compare.c: Add vnet packet's tcp/udp/icmp compare
net/colo.c: Add vnet packet parse feature in colo-proxy
net/colo-compare.c: Make colo-compare support vnet_hdr_len
net/colo-compare.c: Introduce parameter for compare_chr_send()
net/colo.c: Make vnet_hdr_len as packet property
net/filter-mirror.c: Add new option to enable vnet support for filter-redirector
net/filter-mirror.c: Make filter mirror support vnet support.
net/filter-mirror.c: Introduce parameter for filter_send()
net/net.c: Add vnet_hdr support in SocketReadState
net: Add vnet_hdr_len arguments in NetClientState
- Use reStructuredText as markup language (with the goal of generating
the HTML output using the Sphinx Documentation Generator). It is
gentler on the eye, and can be trivially converted to different
formats. (Another reason: upstream QEMU is considering to switch to
Sphinx, which uses reStructuredText as its markup language.)
- Raw QMP JSON output vs. 'qmp-shell'. I debated with myself whether
to only show raw QMP JSON output (as that is the canonical
representation), or use 'qmp-shell', which takes key-value pairs. I
settled on the approach of: for the first occurrence of a command,
use raw JSON; for subsequent occurrences, use 'qmp-shell', with an
occasional exception.
- Usage of `-blockdev` command-line.
- Usage of 'node-name' vs. file path to refer to disks. While we have
`blockdev-{mirror, backup}` as 'node-name'-alternatives for
`drive-{mirror, backup}`, the `block-commit` command still operates
on file names for parameters 'base' and 'top'. So I added a caveat
at the beginning to that effect.
Refer this related thread that I started (where I learnt
`block-stream` was recently reworked to accept 'node-name' for 'top'
and 'base' parameters):
https://lists.nongnu.org/archive/html/qemu-devel/2017-05/msg06466.html
"[RFC] Making 'block-stream', and 'block-commit' accept node-name"
All commands showed in this document were tested while documenting.
Thanks: Eric Blake for the section: "A note on points-in-time vs file
names". This useful bit was originally articulated by Eric in his
KVMForum 2015 presentation, so I included that specific bit in this
document.
qemu-ga: check if utmpx.h is available on the system
Commit 161a56a9065 added command guest-get-users and requires the
utmpx.h (defined by POSIX) to work. It is however not always available
(e.g. on OpenBSD) therefor a check for its existence is necessary.
Daniel Rempel [Wed, 5 Jul 2017 09:01:13 +0000 (12:01 +0300)]
qga-win: fix installation on localized windows
Bug: https://bugzilla.redhat.com/show_bug.cgi?id=1357789
Replace hardcoded user and group names ("Administrators", "SYSTEM") with the ones acquired from system. Windows uses localized strings for these names and it may cause the installation to fail.
Windows has Well-known SIDs for "Administrators" group and "SYSTEM" user so they were used to identify required users and groups.
Well-known SIDs: https://support.microsoft.com/en-us/help/243330/well-known-security-identifiers-in-windows-operating-systems
Eric Blake [Mon, 17 Jul 2017 19:26:35 +0000 (14:26 -0500)]
nbd: Fix server reply to NBD_OPT_EXPORT_NAME of older clients
A typo in commit 23e099c set the size of buf[] used in response
to NBD_OPT_EXPORT_NAME according to the length needed for old-style
negotiation (4 bytes of flag information) instead of the intended
2 bytes used in new style. If the client doesn't enable
NBD_FLAG_C_NO_ZEROES, then the server sends two bytes too many,
and is then out of sync in response to the client's next command
(the bug is masked when modern qemu is the client, since we enable
the no zeroes flag).
While touching this code, add some more defines to nbd_internal.h
rather than having quite so many magic numbers in the .c; also,
use "" initialization rather than memset(), and tweak the oldstyle
negotiation to better match the spec description of the layout
(since the spec is big-endian, skipping two bytes as 0 followed by
writing a 2-byte flag is the same as writing a zero-extended 4-byte
flag), to make it a bit easier to follow compared to the spec.
[checkpatch.pl has some false positives in the comments]
target/s390x: Allow to enable "idtes" feature for TCG
STFL bit 4 and 5 are just indications to the guest, which TLB entries an
IDTE call will clear. These are performance indicators for the guest.
STFL bit 4:
INVALIDATE DAT TABLE ENTRY (IDTE) performs
the invalidation-and-clearing operation by
selectively clearing TLB segment-table entries
when a segment-table entry or entries are
invalidated. IDTE also performs the clearing-by-
ASCE operation. Unless bit 4 is one, IDTE simply
purges all TLBs. Bit 3 is one if bit 4 is one.
We can simply set STFL bit 4 ("idtes") and still purge the complete TLB.
Purging more than advertised is never bad. E.g. Linux doesn't even care
about this bit. We can optimized this later.
This is helpful, as the z9 base model contains this facility.
STFL bit 5 (clearing TLB region-table-entries) was never implemented on
real HW, therefore we can simply ignore it for now.
Since we require all registers saved on input, read R0 from ENV instead
of passing it manually. Recognize the specification exception when R0
contains incorrect data. Keep high bits of result registers unmodified
when in 31 or 24-bit mode.
Eric Blake [Mon, 17 Jul 2017 14:23:10 +0000 (09:23 -0500)]
nbd: Fix iotests failure due to changed client error message
Commit 8ecaeae8 changed the way the client requests an NBD export,
and in the process also changed the resulting error message when
the export is not present, breaking a couple of iotests. The error
message is now directly given by the server (a failed NBD_OPT_GO)
instead of implied by the client (after exhausting NBD_OPT_LIST),
but looking at the testsuite changes, it proves worthwhile to
reword the error message to be slightly less verbose (as this is
one particular error message likely to be hit by a user).
Note that the error message is now sensitive to which binary is
running the server as well as the client (since the expected
output is replaying a message received from the server - for that
matter, it depends on a server new enough to understand NBD_OPT_GO);
in general iotests are run on client and server from the same source
code base so the default setup will pass; but if it proves
problematic for people overriding QEMU_PROG, QEMU_IMG_PROG,
QEMU_IO_PROG, and QEMU_NBD_PROG to point across multiple builds for
cross-version integration testing, we may have to later tweak or
sanitize the output somehow.
qmp: Include parent type on 'qom-list-types' output
Include name of parent type of each type on 'qom-list-types' output.
Without this, there's no way to figure out the parents of a given type
without making additional 'qom-list-types' queries.
In addition to the test case for the new feature, update the
abstract-interface test case to use the new field and avoid the
"qom-list-types implements=object" trick.
qmp: Include 'abstract' field on 'qom-list-types' output
A client may be interested in getting the list of both abstract and
non-abstract types. Instead of requiring them to make multiple queries
with different filter arguments, just return an 'abstract' field in
'qom-list-types'.
In addition to the new test code for validating this field, update the
abstract-interfaces test case to query for all 'interface' subtypes
(including abstract ones), and to look at the 'abstract' field directly.
Introduce Skylake-Server cpu mode which inherits the features from
Skylake-Client and supports some additional features that are: AVX512,
CLWB and PGPE1GB.
i386: expose "TCGTCGTCGTCG" in the 0x40000000 CPUID leaf
Currently when running KVM, we expose "KVMKVMKVM\0\0\0" in
the 0x40000000 CPUID leaf. Other hypervisors (VMWare,
HyperV, Xen, BHyve) all do the same thing, which leaves
TCG as the odd one out.
The CPUID signature is used by software to detect which
virtual environment they are running in and (potentially)
change behaviour in certain ways. For example, systemd
supports a ConditionVirtualization= setting in unit files.
The virt-what command can also report the virt type it is
running on
Currently both these apps have to resort to custom hacks
like looking for 'fw-cfg' entry in the /proc/device-tree
file to identify TCG.
This change thus proposes a signature "TCGTCGTCGTCG" to be
reported when running under TCG.
To hide this, the -cpu option tcg-cpuid=off can be used.
Mark Cave-Ayland [Fri, 14 Jul 2017 09:40:08 +0000 (10:40 +0100)]
fw_cfg: move QOM type defines and fw_cfg types into fw_cfg.h
By exposing FWCfgIoState and FWCfgMemState internals we allow the possibility
for the internal MemoryRegion fields to be mapped by name for boards that wish
to wire up the fw_cfg device themselves.
Mark Cave-Ayland [Fri, 14 Jul 2017 09:40:07 +0000 (10:40 +0100)]
fw_cfg: move qdev_init_nofail() from fw_cfg_init1() to callers
When looking to instantiate a TYPE_FW_CFG_MEM or TYPE_FW_CFG_IO device to be
able to wire it up differently, it is much more convenient for the caller to
instantiate the device and have the fw_cfg default files already preloaded
during realize.
Move fw_cfg_init1() to the end of both the fw_cfg_mem_realize() and
fw_cfg_io_realize() functions so it no longer needs to be called manually
when instantiating the device, and also rename it to fw_cfg_common_realize()
which better describes its new purpose.
Since it is now the responsibility of the machine to wire up the fw_cfg device
it is necessary to introduce a object_property_add_child() call into
fw_cfg_init_io() and fw_cfg_init_mem() to link the fw_cfg device to the root
machine object as before.
Finally with the previous change to fw_cfg_find() we can now remove the
assert() preventing multiple fw_cfg devices being instantiated and replace
them with a simple call to fw_cfg_find() at realize time instead. This allows
us to remove FW_CFG_NAME and FW_CFG_PATH since they are no longer required.
Mark Cave-Ayland [Fri, 14 Jul 2017 09:40:06 +0000 (10:40 +0100)]
fw_cfg: switch fw_cfg_find() to locate the fw_cfg device by type rather than path
This will enable the fw_cfg device to be placed anywhere within the QOM tree
regardless of its machine location.
Note that we also add a comment to document the behaviour that we return NULL to
indicate failure where either no fw_cfg device or multiple fw_cfg devices are
found.
qom: Fix ambiguous path detection when ambiguous=NULL
object_resolve_path*() ambiguous path detection breaks when
ambiguous==NULL and the object tree have 3 objects of the same type and
only 2 of them are under the same parent. e.g.:
With the above tree, object_resolve_path_type("", TYPE_FOO, NULL) will
incorrectly return /obj2, because the search inside "/container" will
return NULL, and the match at "/obj2" won't be detected as ambiguous.
Fix that by always calling object_resolve_partial_path() with a non-NULL
ambiguous parameter.
Greg Kurz [Tue, 11 Jul 2017 00:43:01 +0000 (21:43 -0300)]
qdev: fix the order compat and global properties are applied
The current code recursively applies global properties from child up to
parent types. This can cause properties passed with the -global option to
be silently overridden by internal compat properties.
This is exactly what happened with virtio-*-pci drivers since commit:
Passing -device virtio-blk-pci.disable-modern=off had no effect on 2.6
machine types because the internal virtio-pci.disable-modern=on compat
property always prevailed.
A workaround for this was included with commit 0bcba41f ("machine:
Convert abstract typename on compat_props to subclass names").
This patch fixes the issue properly by reversing the logic: we now go
through the global property list and, for each property, we check if it
is applicable to the device.
This results in compat properties being applied first, in the order they
appear in the HW_COMPAT_* macros, followed by global properties, in the
order they appear on the command line.
At the moment VFIO PCI device initialization works as follows:
vfio_realize
vfio_get_group
vfio_connect_container
register memory listeners (1)
update QEMU groups lists
vfio_kvm_device_add_group
Then (example for pseries) the machine reset hook triggers region_add()
for all regions where listeners from (1) are listening:
This scheme works fine until we need to handle VFIO PCI device hotplug
and we want to enable PPC64/sPAPR in-kernel TCE acceleration on,
i.e. after PCI hotplug we need a place to call
ioctl(vfio_kvm_device_fd, KVM_DEV_VFIO_GROUP_SET_SPAPR_TCE).
Since the ioctl needs a LIOBN fd (from sPAPRTCETable) and a IOMMU group fd
(from VFIOGroup), vfio_listener_region_add() seems to be the only place
for this ioctl().
However this only works during boot time because the machine reset
happens strictly after all devices are finalized. When hotplug happens,
vfio_listener_region_add() is called when a memory listener is registered
but when this happens:
1. new group is not added to the container->group_list yet;
2. VFIO KVM device is unaware of the new IOMMU group.
This moves bits around to have all necessary VFIO infrastructure
in place for both initial startup and hotplug cases.
[aw: ie, register vfio groups with kvm prior to memory listener
registration such that kvm-vfio pseudo device ioctls are available
during the region_add callback]
* remotes/stefanha/tags/tracing-pull-request:
trace: update old trace events in docs
trace: [trivial] Statically enable all guest events
trace: [tcg, trivial] Re-align generated code
trace: [tcg] Do not generate TCG code to trace dynamically-disabled events
exec: [tcg] Use different TBs according to the vCPU's dynamic tracing state
trace: [tcg] Delay changes to dynamic state when translating
trace: Allocate cpu->trace_dstate in place
Pavel Dovgalyuk [Fri, 23 Jun 2017 10:41:16 +0000 (12:41 +0200)]
mips: set CP0 Debug DExcCode for SDBBP instruction
This patch fixes setting DExcCode field of CP0 Debug register
when SDBBP instruction is executed. According to EJTAG specification,
this field must be set to the value 9 (Bp).
* remotes/kraxel/tags/audio-20170717-pull-request:
audio/adlib: remove limitation of one adlib card
audio/fmopl: modify timer callback to give opaque and channel parameters in two arguments
audio: st_rate_flow exist a infinite loop
Alexander Graf [Wed, 12 Jul 2017 12:34:28 +0000 (14:34 +0200)]
PPC: E500: Update u-boot to v2017.07
Quite a while has passed since we last updated U-Boot for e500. This patch
bumps it to the last released version 2017.07 to make sure users don't feel
like they're using out of date software.
Peter Maydell [Mon, 17 Jul 2017 12:36:09 +0000 (13:36 +0100)]
MAINTAINERS: Add entries for MPS2 board
Add entries to the MAINTAINERS file for the new MPS2
board and devices.
Since the CMSDK devices are not specific to the MPS2 board,
extend the existing 'PrimeCell' section to cover CMSDK
devices as well; in both cases these are devices implemented
by ARM and provided as RTL that may be used in multiple
SoCs and boards.
Peter Maydell [Mon, 17 Jul 2017 12:36:09 +0000 (13:36 +0100)]
hw/arm/mps2: Add ethernet
The MPS2 FPGA images support ethernet via a LAN9220. We use
QEMU's LAN9118 model, which is software compatible except
that it is missing the checksum-offload feature.
Peter Maydell [Mon, 17 Jul 2017 12:36:08 +0000 (13:36 +0100)]
hw/misc/mps2_scc: Implement MPS2 Serial Communication Controller
Implement a model of the Serial Communication Controller (SCC) found
in MPS2 FPGA images.
The primary purpose of this device is to communicate with the
Motherboard Configuration Controller (MCC) which is located on
the MPS board itself, outside the FPGA image. This is used
for programming the MPS clock generators. The SCC also has
some basic ID registers and an output for the board LEDs.
Peter Maydell [Mon, 17 Jul 2017 12:36:08 +0000 (13:36 +0100)]
hw/arm/mps2: Add UARTs
Add the UARTs to the MPS2 board models.
Unfortunately the details of the wiring of the interrupts through
various OR gates differ between AN511 and AN385 so this can't
be purely a data-driven difference.
Peter Maydell [Mon, 17 Jul 2017 12:36:08 +0000 (13:36 +0100)]
hw/arm/mps2: Implement skeleton mps2-an385 and mps2-an511 board models
Model the ARM MPS2/MPS2+ FPGA based development board.
The MPS2 and MPS2+ dev boards are FPGA based (the 2+ has a bigger
FPGA but is otherwise the same as the 2). Since the CPU itself
and most of the devices are in the FPGA, the details of the board
as seen by the guest depend significantly on the FPGA image.
We model the following FPGA images:
"mps2_an385" -- Cortex-M3 as documented in ARM Application Note AN385
"mps2_an511" -- Cortex-M3 'DesignStart' as documented in AN511
They are fairly similar but differ in the details for some
peripherals.
Alex Bennée [Mon, 17 Jul 2017 12:36:07 +0000 (13:36 +0100)]
target/arm: use DISAS_EXIT for eret handling
Previously DISAS_JUMP did ensure this but with the optimisation of 8a6b28c7 (optimize indirect branches) we might not leave the loop.
This means if any pending interrupts are cleared by changing IRQ flags
we might never get around to servicing them. You usually notice this
by seeing the lookup_tb_ptr() helper gainfully chaining TBs together
while cpu->interrupt_request remains high and the exit_request has not
been set.
This breaks amongst other things the OPTEE test suite which executes
an eret from the secure world after a non-secure world IRQ has gone
pending which then never gets serviced.
Instead of using the previously implied semantics of DISAS_JUMP we use
DISAS_EXIT which will always exit the run-loop.
Alex Bennée [Mon, 17 Jul 2017 12:36:07 +0000 (13:36 +0100)]
target/arm: use gen_goto_tb for ISB handling
While an ISB will ensure any raised IRQs happen on the next
instruction it doesn't cause any to get raised by itself. We can
therefore use a simple tb exit for ISB instructions and rely on the
exit_request check at the top of each TB to deal with exiting if
needed.
Alex Bennée [Mon, 17 Jul 2017 12:36:07 +0000 (13:36 +0100)]
target/arm/translate: make DISAS_UPDATE match declared semantics
DISAS_UPDATE should be used when the wider CPU state other than just
the PC has been updated and we should therefore exit the TCG runtime
and return to the main execution loop rather assuming DISAS_JUMP would
do that.
Peter Maydell [Mon, 17 Jul 2017 12:36:07 +0000 (13:36 +0100)]
target/arm: Make Cortex-M3 and M4 default to 8 PMSA regions
The Cortex-M3 and M4 CPUs always have 8 PMSA MPU regions (this isn't
a configurable option for the hardware). Make the default value of
the pmsav7-dregion property be set per-cpu, so we don't need to have
every user of these CPUs set it manually. (The existing default of
16 is correct for the other PMSAv7 core, the Cortex-R5.)
This fixes a bug where we were creating the M3 and M4 with
too many regions; most guest software would not notice or
care, though, since it would just not use the registers
associated with the unexpected extra regions.
Peter Maydell [Mon, 17 Jul 2017 12:36:06 +0000 (13:36 +0100)]
qdev: support properties which don't set a default value
In some situations it's useful to have a qdev property which doesn't
automatically set its default value when qdev_property_add_static is
called (for instance when the default value is not constant).
Support this by adding a flag to the Property struct indicating
whether to set the default value. This replaces the existing test
for whether the PropertyInfo set_default_value function pointer is
NULL, and we set the .set_default field to true for all those cases
of struct Property which use a PropertyInfo with a non-NULL
set_default_value, so behaviour remains the same as before.
This gives us the semantics of:
* if .set_default is true, then .info->set_default_value must
be not NULL, and .defval is used as the the default value of
the property
* otherwise, the property system does not set any default, and
the field will retain whatever initial value it was given by
the device's .instance_init method
We define two new macros DEFINE_PROP_SIGNED_NODEFAULT and
DEFINE_PROP_UNSIGNED_NODEFAULT, to cover the most plausible use cases
of wanting to set an integer property with no default value.
Peter Maydell [Mon, 17 Jul 2017 12:36:06 +0000 (13:36 +0100)]
qdev-properties.h: Explicitly set the default value for arraylen properties
In DEFINE_PROP_ARRAY, because we use a PropertyInfo (qdev_prop_arraylen)
which has a .set_default_value member we will set the field to a default
value. That default value will be zero, by the C rule that struct
initialization sets unmentioned members to zero if at least one member
is initialized. However it's clearer to state it explicitly.
net/filter-rewriter.c: Make filter-rewriter support vnet_hdr_len
We add the vnet_hdr_support option for filter-rewriter, default is disabled.
If you use virtio-net-pci or other driver needs vnet_hdr, please enable it.
You can use it for example:
-object filter-rewriter,id=rew0,netdev=hn0,queue=all,vnet_hdr_support
We get the vnet_hdr_len from NetClientState that make us
parse net packet correctly.
net/colo-compare.c: Make colo-compare support vnet_hdr_len
We add the vnet_hdr_support option for colo-compare, default is disabled.
If you use virtio-net-pci or other driver needs vnet_hdr, please enable it.
You can use it for example:
-object colo-compare,id=comp0,primary_in=compare0-0,secondary_in=compare1,outdev=compare_out0,vnet_hdr_support
COLO-compare can get vnet header length from filter,
Add vnet_hdr_len to struct packet and output packet with
the vnet_hdr_len.
net/colo-compare.c: Introduce parameter for compare_chr_send()
This patch change the compare_chr_send() parameter from CharBackend to CompareState,
we can get more information like vnet_hdr(We use it to support packet with vnet_header).
net/filter-mirror.c: Add new option to enable vnet support for filter-redirector
We add the vnet_hdr_support option for filter-redirector, default is disabled.
If you use virtio-net-pci net driver or other driver needs vnet_hdr, please enable it.
Because colo-compare or other modules needs the vnet_hdr_len to parse
packet, we add this new option send the len to others.
You can use it for example:
-object filter-redirector,id=r0,netdev=hn0,queue=tx,outdev=red0,vnet_hdr_support
net/filter-mirror.c: Make filter mirror support vnet support.
We add the vnet_hdr_support option for filter-mirror, default is disabled.
If you use virtio-net-pci or other driver needs vnet_hdr, please enable it.
You can use it for example:
-object filter-mirror,id=m0,netdev=hn0,queue=tx,outdev=mirror0,vnet_hdr_support
If it has vnet_hdr_support flag, we will change the sending packet format from
struct {int size; const uint8_t buf[];} to {int size; int vnet_hdr_len; const uint8_t buf[];}.
make other module(like colo-compare) know how to parse net packet correctly.
Stefan Hajnoczi [Fri, 14 Jul 2017 13:31:11 +0000 (14:31 +0100)]
trace: update old trace events in docs
Commit c5f1ad429cdf26023cf331075a7d327708e3db6d ("block: Remove
bdrv_aio_readv/writev/flush()") removed
bdrv_aio_readv()/bdrv_aio_writev() so the example in the tracing
documentation is no longer valid.
trace: [tcg] Do not generate TCG code to trace dynamically-disabled events
If an event is dynamically disabled, the TCG code that calls the
execution-time tracer is not generated.
Removes the overheads of execution-time tracers for dynamically disabled
events. As a bonus, also avoids checking the event state when the
execution-time tracer is called from TCG-generated code (since otherwise
TCG would simply not call it).
exec: [tcg] Use different TBs according to the vCPU's dynamic tracing state
Every vCPU now uses a separate set of TBs for each set of dynamic
tracing event state values. Each set of TBs can be used by any number of
vCPUs to maximize TB reuse when vCPUs have the same tracing state.
This feature is later used by tracetool to optimize tracing of guest
code events.
The maximum number of TB sets is defined as 2^E, where E is the number
of events that have the 'vcpu' property (their state is stored in
CPUState->trace_dstate).
For this to work, a change on the dynamic tracing state of a vCPU will
force it to flush its virtual TB cache (which is only indexed by
address), and fall back to the physical TB cache (which now contains the
vCPU's dynamic tracing state as part of the hashing function).
trace: [tcg] Delay changes to dynamic state when translating
This keeps consistency across all decisions taken during translation
when the dynamic state of a vCPU is changed in the middle of translating
some guest code.
There's little point in dynamically allocating the bitmap if we
know at compile-time the max number of events we want to support.
Thus, make room in the struct for the bitmap, which will make things
easier later: this paves the way for upcoming changes, in which
we'll use a u32 to fully capture cpu->trace_dstate.
This change also increases performance by saving a dereference and
improving locality--note that this is important since upcoming work
makes reading this bitmap fairly common.
projects / qemu.git / log