Pages that we want to track for NOTDIRTY are RAM. We do not
really need to go through the I/O path to handle them.
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
It does not require going through the whole I/O path
in order to discard a write.
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The memory_region_tb_read tracepoint is unreachable, since notdirty
is supposed to apply only to writes. The memory_region_tb_write
tracepoint is mis-named, because notdirty is not only used for TB
invalidation. It is also used for e.g. VGA RAM updates and migration.
Replace memory_region_tb_write with memory_notdirty_write_access,
and place it in memory_notdirty_write_prepare where it can catch
all of the instances. Add memory_notdirty_set_dirty to log when
we no longer intercept writes to a page.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Handle bswap on ram directly in load/store_helper. This fixes a
bug with the previous implementation in that one cannot use the
I/O path for RAM.
Fixes: a26fc6f515
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
We will shortly be using these more than once.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Increase the current runtime assert to a compile-time assert.
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Use this as a compile-time assert that a particular
code path is not reachable.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This forced inlining can result in missing symbols,
which makes a debugging build harder to follow.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
These bits do not need to vary with the actual page size
used by the guest.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* Update of maintainer email address
* Fixes for xen-bus and xen-block
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Merge remote-tracking branch 'remotes/aperard/tags/pull-xen-20190924' into staging
Xen queue
* Update of maintainer email address
* Fixes for xen-bus and xen-block
# gpg: Signature made Tue 24 Sep 2019 12:27:56 BST
# gpg: using RSA key F80C006308E22CFD8A92E7980CF5572FD7FB55AF
# gpg: issuer "anthony.perard@citrix.com"
# gpg: Good signature from "Anthony PERARD <anthony.perard@gmail.com>" [marginal]
# gpg: aka "Anthony PERARD <anthony.perard@citrix.com>" [marginal]
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 5379 2F71 024C 600F 778A 7161 D8D5 7199 DF83 42C8
# Subkey fingerprint: F80C 0063 08E2 2CFD 8A92 E798 0CF5 572F D7FB 55AF
* remotes/aperard/tags/pull-xen-20190924:
xen-bus: only set the xen device frontend state if it is missing
xen-block: treat XenbusStateUnknown the same as XenbusStateClosed
MAINTAINERS: update my email address
xen: perform XenDevice clean-up in XenBus watch handler
xen: introduce separate XenWatchList for XenDevice objects
xen / notify: introduce a new XenWatchList abstraction
xen-bus: check whether the frontend is active during device reset...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
audio: new backend api (first part of the surround sound patch series).
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Merge remote-tracking branch 'remotes/kraxel/tags/audio-20190924-pull-request' into staging
audio: documentation fixes.
audio: new backend api (first part of the surround sound patch series).
# gpg: Signature made Tue 24 Sep 2019 07:19:31 BST
# gpg: using RSA key 4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" [full]
# gpg: aka "Gerd Hoffmann <gerd@kraxel.org>" [full]
# gpg: aka "Gerd Hoffmann (private) <kraxel@gmail.com>" [full]
# Primary key fingerprint: A032 8CFF B93A 17A7 9901 FE7D 4CB6 D8EE D3E8 7138
* remotes/kraxel/tags/audio-20190924-pull-request:
audio: split ctl_* functions into enable_* and volume_*
audio: common rate control code for timer based outputs
audio: unify input and output mixeng buffer management
audio: remove remains of the old backend api
wavaudio: port to the new audio backend api
spiceaudio: port to the new audio backend api
sdlaudio: port to the new audio backend api
paaudio: port to the new audio backend api
ossaudio: port to the new audio backend api
noaudio: port to the new audio backend api
dsoundaudio: port to the new audio backend api
coreaudio: port to the new audio backend api
alsaaudio: port to the new audio backend api
audio: api for mixeng code free backends
audio: fix ALSA period-length typo in documentation
audio: fix buffer-length typo in documentation
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Some toolstack implementations will set the frontend xenstore
keys to Initialising which will then trigger the in guest PV
drivers to begin initialising and some implementations will
then set their state to Closing. If this has occurred then
device realize must not overwrite the frontend keys as then
the handshake will stall.
Signed-off-by: Mark Syms <mark.syms@citrix.com>
Also avoid creating the frontend area if it already exists.
Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Reviewed-by: Anthony PERARD <anthony.perard@citrix.com>
Message-Id: <20190918115745.39006-1-paul.durrant@citrix.com>
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
When a frontend gracefully disconnects from an offline backend, it will
set its own state to XenbusStateClosed. The code in xen-block.c correctly
deals with this and sets the backend into XenbusStateClosed. Unfortunately
it is possible for toolstack to actually delete the frontend area
before the state key has been read, leading to an apparent frontend state
of XenbusStateUnknown. This prevents the backend state from transitioning
to XenbusStateClosed and hence leaves it limbo.
This patch simply treats a frontend state of XenbusStateUnknown the same
as XenbusStateClosed, which will unblock the backend in these circumstances.
Reported-by: Mark Syms <mark.syms@citrix.com>
Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Acked-by: Anthony PERARD <anthony.perard@citrix.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-Id: <20190918115702.38959-1-paul.durrant@citrix.com>
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
My Citrix email address will expire shortly.
Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Reviewed-by: Anthony PERARD <anthony.perard@citrix.com>
Message-Id: <20190913122418.848-1-paul.durrant@citrix.com>
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Cleaning up offline XenDevice objects directly in
xen_device_backend_changed() is dangerous as xen_device_unrealize() will
modify the watch list that is being walked. Even the QLIST_FOREACH_SAFE()
used in notifier_list_notify() is insufficient as *two* notifiers (for
the frontend and backend watches) are removed, thus potentially rendering
the 'next' pointer unsafe.
The solution is to use the XenBus backend_watch handler to do the clean-up
instead, as it is invoked whilst walking a separate watch list.
This patch therefore adds a new 'inactive_devices' list to XenBus, to which
offline devices are added by xen_device_backend_changed(). The XenBus
backend_watch registration is also changed to not only invoke
xen_bus_enumerate() but also a new xen_bus_cleanup() function, which will
walk 'inactive_devices' and perform the necessary actions.
For safety an extra 'online' check is also added to xen_bus_type_enumerate()
to make sure that no attempt is made to create a new XenDevice object for a
backend that is offline.
NOTE: This patch also includes some cosmetic changes:
- substitute the local variable name 'backend_state'
in xen_bus_type_enumerate() with 'state', since there
is no ambiguity with any other state in that context.
- change xen_device_state_is_active() to
xen_device_frontend_is_active() (and pass a XenDevice directly)
since the state tests contained therein only apply to a frontend.
- use 'state' rather then 'xendev->backend_state' in
xen_device_backend_changed() to shorten the code.
Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Reviewed-by: Anthony PERARD <anthony.perard@citrix.com>
Message-Id: <20190913082159.31338-4-paul.durrant@citrix.com>
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
This patch uses the XenWatchList abstraction to add a separate watch list
for each device. This is more scalable than walking a single notifier
list for all watches and is also necessary to implement a bug-fix in a
subsequent patch.
Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Reviewed-by: Anthony Perard <anthony.perard@citrix.com>
Message-Id: <20190913082159.31338-3-paul.durrant@citrix.com>
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Xenstore watch call-backs are already abstracted away from XenBus using
the XenWatch data structure but the associated NotifierList manipulation
and file handle registration is still open coded in various xen_bus_...()
functions.
This patch creates a new XenWatchList data structure to allow these
interactions to be abstracted away from XenBus as well. This is in
preparation for a subsequent patch which will introduce separate watch lists
for XenBus and XenDevice objects.
NOTE: This patch also introduces a new notifier_list_empty() helper function
for the purposes of adding an assertion that a XenWatchList is not
freed whilst its associated NotifierList is still occupied.
Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Reviewed-by: Anthony Perard <anthony.perard@citrix.com>
Message-Id: <20190913082159.31338-2-paul.durrant@citrix.com>
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
...not the backend
Commit cb323146 "xen-bus: Fix backend state transition on device reset"
contained a subtle mistake. The hunk
@@ -539,11 +556,11 @@ static void xen_device_backend_changed(void *opaque)
/*
* If the toolstack (or unplug request callback) has set the backend
- * state to Closing, but there is no active frontend (i.e. the
- * state is not Connected) then set the backend state to Closed.
+ * state to Closing, but there is no active frontend then set the
+ * backend state to Closed.
*/
if (xendev->backend_state == XenbusStateClosing &&
- xendev->frontend_state != XenbusStateConnected) {
+ !xen_device_state_is_active(state)) {
xen_device_backend_set_state(xendev, XenbusStateClosed);
}
mistakenly replaced the check of 'xendev->frontend_state' with a check
(now in a helper function) of 'state', which actually equates to
'xendev->backend_state'.
This patch fixes the mistake.
Fixes: cb32314607
Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Reviewed-by: Anthony PERARD <anthony.perard@citrix.com>
Message-Id: <20190910171753.3775-1-paul.durrant@citrix.com>
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
* Relaxed error code pattern on machine_m68k_nextcube.py
* Better naming and separation of tests in x86_cpu_model_versions.py
* New checks on guest side on linux_ssh_mips_malta.py
* Use of avocado.utils.ssh, and thus "/usr/bin/ssh" for SSH
interaction
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Merge remote-tracking branch 'remotes/cleber/tags/python-next-pull-request' into staging
Improvements include:
* Relaxed error code pattern on machine_m68k_nextcube.py
* Better naming and separation of tests in x86_cpu_model_versions.py
* New checks on guest side on linux_ssh_mips_malta.py
* Use of avocado.utils.ssh, and thus "/usr/bin/ssh" for SSH
interaction
# gpg: Signature made Mon 23 Sep 2019 14:38:01 BST
# gpg: using RSA key 7ABB96EB8B46B94D5E0FE9BB657E8D33A5F209F3
# gpg: Good signature from "Cleber Rosa <crosa@redhat.com>" [marginal]
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 7ABB 96EB 8B46 B94D 5E0F E9BB 657E 8D33 A5F2 09F3
* remotes/cleber/tags/python-next-pull-request:
Acceptance tests: use avocado.utils.ssh for SSH interaction
tests/acceptance: Add new test cases in linux_ssh_mips_malta.py
tests/acceptance: Refactor and improve reporting in linux_ssh_mips_malta.py
Acceptance test x86_cpu_model_versions: split into smaller tests
Acceptance test x86_cpu_model_versions: fix mismatches between test and messages
Acceptance test x86_cpu_model_versions: shutdown VMs
Acceptance test machine_m68k_nextcube.py: relax the error code pattern
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
- gen15a is called z15
- officially require a 3.15 kernel or later for kvm
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Merge remote-tracking branch 'remotes/borntraeger/tags/s390x-20190923' into staging
- bugfixes in ccw bios
- gen15a is called z15
- officially require a 3.15 kernel or later for kvm
# gpg: Signature made Mon 23 Sep 2019 08:18:32 BST
# gpg: using RSA key 117BBC80B5A61C7C
# gpg: Good signature from "Christian Borntraeger (IBM) <borntraeger@de.ibm.com>" [full]
# Primary key fingerprint: F922 9381 A334 08F9 DBAB FBCA 117B BC80 B5A6 1C7C
* remotes/borntraeger/tags/s390x-20190923:
s390x/cpumodel: Add the z15 name to the description of gen15a
s390x/kvm: Officially require at least kernel 3.15
pc-bios/s390-ccw: Rebuild the s390-netboot.img firmware image
pc-bios/s390-ccw/net: fix a possible memory leak in get_uuid()
pc-bios/s390-ccw: Do not pre-initialize empty array
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This way we no longer need vararg functions, improving compile time
error detection. Also now it's possible to check actually what commands
are supported, without needing to manually update ctl_caps.
Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Message-id: 2b08b3773569c5be055d0a0fb2f29ff64e79f0f4.1568927990.git.DirtY.iCE.hu@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit removes the ad-hoc rate-limiting code from noaudio and
wavaudio, and replaces them with a (slightly modified) code from
spiceaudio. This way multiple write calls (for example when the
circular buffer wraps around) do not cause problems.
Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Message-id: fd0fe5b95b13fa26d09ae77a72f99d0ea411de14.1568927990.git.DirtY.iCE.hu@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Usage notes: hw->samples became hw->{mix,conv}_buf->size, except before
initialization (audio_pcm_hw_alloc_resources_*), hw->samples gives the
initial size of the STSampleBuffer. The next commit tries to fix this
inconsistency.
Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Message-id: a78caeb2eeb6348ecb45bb2c81709570ef8ac5b3.1568927990.git.DirtY.iCE.hu@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This will make it possible to skip mixeng with audio playback and
recording, allowing us to free ourselves from the limitations of the
current mixeng (stereo, int64 samples only). In this case, HW and SW
voices will be essentially the same, for every SW voice we will create
a HW voice, since we can no longer mix multiple voices together.
Some backends expect us to call a function when we have data ready
write()/read() style, while others provide a buffer and expects us to
directly write/read it, so for optimal performance audio_pcm_ops provide
methods for both cases. Previously backends asked mixeng for more data
in run_out/run_it, now instead mixeng or the frontends will call the
backends, so that's why two sets of functions required. audio.c
contains glue code between the two styles, so backends only ever have to
implement one style and frontends are free to call whichever is more
convenient for them.
Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Message-id: 15a33c03a62228922d851f7324c52f73cb8d2414.1568927990.git.DirtY.iCE.hu@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Some bug fixes for the watchdog and hopeful the BT tests.
Change the IPMI UUID handling to give the user the ability to set it or
not have it.
Add a PCI interface.
Add an SMBus interfaces.
-corey
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Merge remote-tracking branch 'remotes/cminyard/tags/ipmi-for-release-2019-09-20' into staging
ipmi: Some bug fixes and new interfaces
Some bug fixes for the watchdog and hopeful the BT tests.
Change the IPMI UUID handling to give the user the ability to set it or
not have it.
Add a PCI interface.
Add an SMBus interfaces.
-corey
# gpg: Signature made Fri 20 Sep 2019 20:11:21 BST
# gpg: using RSA key FD0D5CE67CE0F59A6688268661F38C90919BFF81
# gpg: Good signature from "Corey Minyard <cminyard@mvista.com>" [unknown]
# gpg: aka "Corey Minyard <minyard@acm.org>" [unknown]
# gpg: aka "Corey Minyard <corey@minyard.net>" [unknown]
# gpg: aka "Corey Minyard <minyard@mvista.com>" [unknown]
# 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/ipmi-for-release-2019-09-20:
pc: Add an SMB0 ACPI device to q35
ipmi: Fix SSIF ACPI handling to use the right CRS
acpi: Add i2c serial bus CRS handling
ipmi: Add an SMBus IPMI interface
ipmi: Add PCI IPMI interfaces
smbios:ipmi: Ignore IPMI devices with no fwinfo function
ipmi: Allow a size value to be passed for I/O space
ipmi: Split out BT-specific code from ISA BT code
ipmi: Split out KCS-specific code from ISA KCS code
ipmi: Add a UUID device property
qdev: Add a no default uuid property
tests:ipmi: Fix IPMI BT tests
ipmi: Generate an interrupt on watchdog pretimeout expiry
ipmi: Fix the get watchdog command
ipmi: Fix watchdog NMI handling
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Let's add a test that especially verifies that no data will be touched
in case we cross page boundaries and one page access triggers a fault.
Before the fault-safe handling fixes, the test failes with:
TEST mvc on s390x
data modified during a fault
make[2]: *** [../Makefile.target:116: run-mvc] Error 1
Acked-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Let's add the simple test based on the example from the PoP.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Each operand can have a maximum length of 16. Make sure to prepare all
reads/writes before writing.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Access at most single pages and document why. Using the access helpers
might over-indicate watchpoints within the same page, I guess we can
live with that.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
We can process a maximum of 256 bytes, crossing two pages.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
We can process a maximum of 256 bytes, crossing two pages.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
We can process a maximum of 256 bytes, crossing two pages. Calculate the
accessed range upfront - src is accessed right-to-left.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
We can process a maximum of 256 bytes, crossing two pages.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
We can process a maximum of 256 bytes, crossing two pages. While at it,
increment the length once.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
We can process a maximum of 256 bytes, crossing two pages.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
The last remaining bit is padding with two bytes.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
The last remaining bit for MVC is handling destructive overlaps in a
fault-safe way.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>