Commit Graph

648 Commits

Author SHA1 Message Date
Fabiano Rosas
eef0bae3a7 migration: Remove block migration
The block migration has been considered obsolete since QEMU 8.2 in
favor of the more flexible storage migration provided by the
blockdev-mirror driver. Two releases have passed so now it's time to
remove it.

Deprecation commit 66db46ca83 ("migration: Deprecate block
migration").

Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Fabiano Rosas <farosas@suse.de>
2024-05-08 09:20:58 -03:00
Paolo Bonzini
7cdfcea693 docs: document new convention for Kconfig board symbols
Boards have been switched to use "default y" and are now listed
in default-configs/*.mak only for convenience.

Document this change and the new possibilities that it allows.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-05-03 15:47:48 +02:00
Richard Henderson
83baec642a target-arm queue:
* Implement FEAT_NMI and NMI support in the GICv3
  * hw/dma: avoid apparent overflow in soc_dma_set_request
  * linux-user/flatload.c: Remove unused bFLT shared-library and ZFLAT code
  * Add ResetType argument to Resettable hold and exit phase methods
  * Add RESET_TYPE_SNAPSHOT_LOAD ResetType
  * Implement STM32L4x5 USART
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Merge tag 'pull-target-arm-20240425' of https://git.linaro.org/people/pmaydell/qemu-arm into staging

target-arm queue:
 * Implement FEAT_NMI and NMI support in the GICv3
 * hw/dma: avoid apparent overflow in soc_dma_set_request
 * linux-user/flatload.c: Remove unused bFLT shared-library and ZFLAT code
 * Add ResetType argument to Resettable hold and exit phase methods
 * Add RESET_TYPE_SNAPSHOT_LOAD ResetType
 * Implement STM32L4x5 USART

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# gpg: Signature made Thu 25 Apr 2024 03:36:03 AM PDT
# gpg:                using RSA key E1A5C593CD419DE28E8315CF3C2525ED14360CDE
# gpg:                issuer "peter.maydell@linaro.org"
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" [full]
# gpg:                 aka "Peter Maydell <pmaydell@gmail.com>" [full]
# gpg:                 aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" [full]
# gpg:                 aka "Peter Maydell <peter@archaic.org.uk>" [unknown]

* tag 'pull-target-arm-20240425' of https://git.linaro.org/people/pmaydell/qemu-arm: (37 commits)
  tests/qtest: Add tests for the STM32L4x5 USART
  hw/arm: Add the USART to the stm32l4x5 SoC
  hw/char/stm32l4x5_usart: Add options for serial parameters setting
  hw/char/stm32l4x5_usart: Enable serial read and write
  hw/char: Implement STM32L4x5 USART skeleton
  reset: Add RESET_TYPE_SNAPSHOT_LOAD
  docs/devel/reset: Update to new API for hold and exit phase methods
  hw, target: Add ResetType argument to hold and exit phase methods
  scripts/coccinelle: New script to add ResetType to hold and exit phases
  allwinner-i2c, adm1272: Use device_cold_reset() for software-triggered reset
  hw/misc: Don't special case RESET_TYPE_COLD in npcm7xx_clk, gcr
  linux-user/flatload.c: Remove unused bFLT shared-library and ZFLAT code
  hw/dma: avoid apparent overflow in soc_dma_set_request
  hw/arm/virt: Enable NMI support in the GIC if the CPU has FEAT_NMI
  target/arm: Add FEAT_NMI to max
  hw/intc/arm_gicv3: Report the VINMI interrupt
  hw/intc/arm_gicv3: Report the NMI interrupt in gicv3_cpuif_update()
  hw/intc/arm_gicv3: Implement NMI interrupt priority
  hw/intc/arm_gicv3: Handle icv_nmiar1_read() for icc_nmiar1_read()
  hw/intc/arm_gicv3: Add NMI handling CPU interface registers
  ...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-04-25 08:07:45 -07:00
Manos Pitsidianakis
b1f8536c94 docs/devel: fix minor typo in submitting-a-patch.rst
s/Resolved:/Resolves:/

Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Message-ID: <20240422124128.4034482-1-manos.pitsidianakis@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2024-04-25 15:15:25 +02:00
Peter Maydell
631f46d4ea reset: Add RESET_TYPE_SNAPSHOT_LOAD
Some devices and machines need to handle the reset before a vmsave
snapshot is loaded differently -- the main user is the handling of
RNG seed information, which does not want to put a new RNG seed into
a ROM blob when we are doing a snapshot load.

Currently this kind of reset handling is supported only for:
 * TYPE_MACHINE reset methods, which take a ShutdownCause argument
 * reset functions registered with qemu_register_reset_nosnapshotload

To allow a three-phase-reset device to also distinguish "snapshot
load" reset from the normal kind, add a new ResetType
RESET_TYPE_SNAPSHOT_LOAD. All our existing reset methods ignore
the reset type, so we don't need to update any device code.

Add the enum type, and make qemu_devices_reset() use the
right reset type for the ShutdownCause it is passed. This
allows us to get rid of the device_reset_reason global we
were using to implement qemu_register_reset_nosnapshotload().

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Luc Michel <luc.michel@amd.com>
Message-id: 20240412160809.1260625-7-peter.maydell@linaro.org
2024-04-25 10:21:59 +01:00
Peter Maydell
41d49ec190 docs/devel/reset: Update to new API for hold and exit phase methods
Update the reset documentation's example code to match the new API
for the hold and exit phase method APIs where they take a ResetType
argument.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Luc Michel <luc.michel@amd.com>
Message-id: 20240412160809.1260625-6-peter.maydell@linaro.org
2024-04-25 10:21:58 +01:00
Stefan Weil
f6822fee96 Fix some typos in documentation (found by codespell)
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2024-04-02 13:38:40 +03:00
Philippe Mathieu-Daudé
52405b7f69 hw/clock: Let clock_set_mul_div() return a boolean value
Let clock_set_mul_div() return a boolean value whether the
clock has been updated or not, similarly to clock_set().

Return early when clock_set_mul_div() is called with
same mul/div values the clock has.

Acked-by: Luc Michel <luc@lmichel.fr>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20240325152827.73817-2-philmd@linaro.org>
2024-03-26 14:24:06 +01:00
Peter Maydell
c6ea92aab8 Migration pull for 9.0-rc0
- Nicholas/Phil's fix on migration corruption / inconsistent for tcg
 - Cedric's fix on block migration over n_sectors==0
 - Steve's CPR reboot documentation page
 - Fabiano's misc fixes on mapped-ram (IOC leak, dup() errors, fd checks, fd
   use race, etc.)
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Merge tag 'migration-20240317-pull-request' of https://gitlab.com/peterx/qemu into staging

Migration pull for 9.0-rc0

- Nicholas/Phil's fix on migration corruption / inconsistent for tcg
- Cedric's fix on block migration over n_sectors==0
- Steve's CPR reboot documentation page
- Fabiano's misc fixes on mapped-ram (IOC leak, dup() errors, fd checks, fd
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* tag 'migration-20240317-pull-request' of https://gitlab.com/peterx/qemu:
  migration/multifd: Duplicate the fd for the outgoing_args
  migration/multifd: Ensure we're not given a socket for file migration
  migration: Fix iocs leaks during file and fd migration
  migration: cpr-reboot documentation
  migration: Skip only empty block devices
  physmem: Fix migration dirty bitmap coherency with TCG memory access
  physmem: Factor cpu_physical_memory_dirty_bits_cleared() out
  physmem: Expose tlb_reset_dirty_range_all()
  migration: Fix error handling after dup in file migration
  io: Introduce qio_channel_file_new_dupfd

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-03-18 17:16:00 +00:00
Steve Sistare
20e6b15653 migration: cpr-reboot documentation
Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Fabiano Rosas <farosas@suse.de>
Link: https://lore.kernel.org/r/1710338119-330923-1-git-send-email-steven.sistare@oracle.com
Signed-off-by: Peter Xu <peterx@redhat.com>
2024-03-13 10:59:25 -04:00
Peter Maydell
51e31f2140 * PAPR nested hypervisor host implementation for spapr TCG
* excp_helper.c code cleanups and improvements
 * Move more ops to decodetree
 * Deprecate pseries-2.12 machines and P9 and P10 DD1.0 CPUs
 * Document running Linux on AmigaNG
 * Update dt feature advertising POWER CPUs.
 * Add P10 PMU SPRs
 * Improve pnv topology calculation for SMT8 CPUs.
 * Various bug fixes.
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Merge tag 'pull-ppc-for-9.0-2-20240313' of https://gitlab.com/npiggin/qemu into staging

* PAPR nested hypervisor host implementation for spapr TCG
* excp_helper.c code cleanups and improvements
* Move more ops to decodetree
* Deprecate pseries-2.12 machines and P9 and P10 DD1.0 CPUs
* Document running Linux on AmigaNG
* Update dt feature advertising POWER CPUs.
* Add P10 PMU SPRs
* Improve pnv topology calculation for SMT8 CPUs.
* Various bug fixes.

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# gpg: Good signature from "Nicholas Piggin <npiggin@gmail.com>" [unknown]
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# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 4E43 7DDA 5661 6F43 29B0  A795 67B3 0276 A862 1CAE

* tag 'pull-ppc-for-9.0-2-20240313' of https://gitlab.com/npiggin/qemu: (38 commits)
  spapr: nested: Introduce cap-nested-papr for Nested PAPR API
  spapr: nested: Introduce H_GUEST_RUN_VCPU hcall.
  spapr: nested: Use correct source for parttbl info for nested PAPR API.
  spapr: nested: Introduce H_GUEST_[GET|SET]_STATE hcalls.
  spapr: nested: Initialize the GSB elements lookup table.
  spapr: nested: Extend nested_ppc_state for nested PAPR API
  spapr: nested: Introduce H_GUEST_CREATE_VCPU hcall.
  spapr: nested: Introduce H_GUEST_[CREATE|DELETE] hcalls.
  spapr: nested: Introduce H_GUEST_[GET|SET]_CAPABILITIES hcalls.
  spapr: nested: Document Nested PAPR API
  spapr: nested: keep nested-hv related code restricted to its API.
  spapr: nested: Introduce SpaprMachineStateNested to store related info.
  spapr: nested: move nested part of spapr_get_pate into spapr_nested.c
  spapr: nested: register nested-hv api hcalls only for cap-nested-hv
  target/ppc: Remove interrupt handler wrapper functions
  target/ppc: Clean up ifdefs in excp_helper.c, part 3
  target/ppc: Clean up ifdefs in excp_helper.c, part 2
  target/ppc: Clean up ifdefs in excp_helper.c, part 1
  target/ppc: Add gen_exception_err_nip() function
  target/ppc: Readability improvements in exception handlers
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-03-13 12:37:27 +00:00
Daniel P. Berrangé
081340d1dd tracetool: remove redundant --target-type / --target-name args
The --target-type and --target-name args are used to construct
the default probe prefix if '--probe-prefix' is not given. The
meson.build will always pass '--probe-prefix', so the other args
are effectively redundant.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 20240108171356.1037059-2-berrange@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2024-03-12 14:52:07 -04:00
Harsh Prateek Bora
195bd175fc spapr: nested: Document Nested PAPR API
Adding initial documentation about Nested PAPR API to describe the set
of APIs and its usage. Also talks about the Guest State Buffer elements
and it's format which is used between L0/L1 to communicate L2 state.

Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
2024-03-13 02:47:04 +10:00
Fabiano Rosas
61dec06082 migration/multifd: Don't fsync when closing QIOChannelFile
Commit bc38feddeb ("io: fsync before closing a file channel") added a
fsync/fdatasync at the closing point of the QIOChannelFile to ensure
integrity of the migration stream in case of QEMU crash.

The decision to do the sync at qio_channel_close() was not the best
since that function runs in the main thread and the fsync can cause
QEMU to hang for several minutes, depending on the migration size and
disk speed.

To fix the hang, remove the fsync from qio_channel_file_close().

At this moment, the migration code is the only user of the fsync and
we're taking the tradeoff of not having a sync at all, leaving the
responsibility to the upper layers.

Fixes: bc38feddeb ("io: fsync before closing a file channel")
Reviewed-by: "Daniel P. Berrangé" <berrange@redhat.com>
Signed-off-by: Fabiano Rosas <farosas@suse.de>
Link: https://lore.kernel.org/r/20240305195629.9922-1-farosas@suse.de
Link: https://lore.kernel.org/r/20240305174332.2553-1-farosas@suse.de
[peterx: add more comment to the qio_channel_close()]
Signed-off-by: Peter Xu <peterx@redhat.com>
2024-03-11 14:41:40 -04:00
Ani Sinha
d65f1ed7de docs/acpi/bits: add some clarity and details while also improving formating
Update bios-bits docs to add more details on why a pre-OS environment for
testing bioses is useful. Add author's FOSDEM talk link. Also improve the
formating of the document while at it.

Signed-off-by: Ani Sinha <anisinha@redhat.com>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2024-03-09 18:56:37 +03:00
Peter Maydell
7d4e29ef80 QAPI patches patches for 2024-03-04
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Merge tag 'pull-qapi-2024-03-04' of https://repo.or.cz/qemu/armbru into staging

QAPI patches patches for 2024-03-04

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# gpg: Signature made Mon 04 Mar 2024 06:24:34 GMT
# gpg:                using RSA key 354BC8B3D7EB2A6B68674E5F3870B400EB918653
# gpg:                issuer "armbru@redhat.com"
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" [full]
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>" [full]
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867  4E5F 3870 B400 EB91 8653

* tag 'pull-qapi-2024-03-04' of https://repo.or.cz/qemu/armbru:
  migration: simplify exec migration functions
  qapi: New strv_from_str_list()
  qapi: New QAPI_LIST_LENGTH()
  docs/devel/writing-monitor-commands: Minor improvements
  docs/devel/writing-monitor-commands: Repair a decade of rot
  qapi: Reject "Returns" section when command doesn't return anything
  qga/qapi-schema: Fix guest-set-memory-blocks documentation
  qga/qapi-schema: Tweak documentation of fsfreeze commands
  qga/qapi-schema: Clean up "Returns" sections
  qga/qapi-schema: Delete useless "Returns" sections
  qga/qapi-schema: Move error documentation to new "Errors" sections
  qapi/yank: Tweak @yank's error description for consistency
  qapi: Clean up "Returns" sections
  qapi: Delete useless "Returns" sections
  qapi: Move error documentation to new "Errors" sections
  qapi: New documentation section tag "Errors"
  qapi: Slightly clearer error message for invalid "Returns" section
  qapi: Memorize since & returns sections

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-03-05 11:20:15 +00:00
Markus Armbruster
8a62ef7bd9 docs/devel/writing-monitor-commands: Minor improvements
Avoid "JSON" when talking about the QAPI schema syntax.  Capitalize
QEMU.  Don't claim all HMP commands live in monitor/hmp-cmds.c (this
was never true).  Fix punctuation and drop inappropriate "the" here
and there.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240227115617.237875-3-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2024-03-04 07:12:40 +01:00
Markus Armbruster
59807e2098 docs/devel/writing-monitor-commands: Repair a decade of rot
The tutorial doesn't match reality since at least 2013.  Repairing it
involves fixing the following issues:

* Update for commit 6d32717155 (aio / timers: Remove alarm timers):
  replace the broken examples.  Instead of having one for returning a
  struct and another for returning a list of structs, do just one for
  the latter.  This resolves the FIXME added in commit
  e218052f92 (aio / timers: De-document -clock) back in 2014.

* Update for commit 895a2a80e0 (qapi: Use 'struct' instead of 'type'
  in schema).

* Update for commit 3313b6124b (qapi: add qapi2texi script): add
  required documentation to the schema snippets, and drop section
  "Command Documentation".

* Update for commit a3c45b3e62 (qapi: New special feature flag
  "unstable"): supply the required feature, deemphasize the x- prefix.

* Update for commit dd98234c05 (qapi: introduce x-query-roms QMP
  command): rephrase from "add new command" to "examine existing
  command".

* Update for commit 9492718b7c (qapi misc: Elide redundant has_FOO in
  generated C): hello-world's message argument no longer comes with a
  has_message, add a second argument that does.

* Update for moved and renamed files.

While there, update QMP version output to current output.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240227115617.237875-2-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[Whitespace tidied up, typo fixed]
2024-03-04 07:12:40 +01:00
Markus Armbruster
3a025d3d1f qapi: New documentation section tag "Errors"
We use section "Returns" for documenting both success and error
response of commands.

I intend to generate better command success response documentation.
Easier when "Returns" documents just he success response.

Create new section tag "Errors".  The next two commits will move error
response documentation from "Returns" sections to "Errors" sections.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240227113921.236097-4-armbru@redhat.com>
2024-03-04 07:12:40 +01:00
Fabiano Rosas
4ed49feb44 migration/ram: Introduce 'mapped-ram' migration capability
Add a new migration capability 'mapped-ram'.

The core of the feature is to ensure that RAM pages are mapped
directly to offsets in the resulting migration file instead of being
streamed at arbitrary points.

The reasons why we'd want such behavior are:

 - The resulting file will have a bounded size, since pages which are
   dirtied multiple times will always go to a fixed location in the
   file, rather than constantly being added to a sequential
   stream. This eliminates cases where a VM with, say, 1G of RAM can
   result in a migration file that's 10s of GBs, provided that the
   workload constantly redirties memory.

 - It paves the way to implement O_DIRECT-enabled save/restore of the
   migration stream as the pages are ensured to be written at aligned
   offsets.

 - It allows the usage of multifd so we can write RAM pages to the
   migration file in parallel.

For now, enabling the capability has no effect. The next couple of
patches implement the core functionality.

Acked-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Fabiano Rosas <farosas@suse.de>
Link: https://lore.kernel.org/r/20240229153017.2221-8-farosas@suse.de
Signed-off-by: Peter Xu <peterx@redhat.com>
2024-03-01 15:42:04 +08:00
Peter Maydell
c0c6a0e352 Migration pull request
- Fabiano's fixed-ram patches (1-5 only)
 - Peter's cleanups on multifd tls IOC referencing
 - Steve's cpr patches for vfio (migration patches only)
 - Fabiano's fix on mbps stats racing with COMPLETE state
 - Fabiano's fix on return path thread hang
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Merge tag 'migration-next-pull-request' of https://gitlab.com/peterx/qemu into staging

Migration pull request

- Fabiano's fixed-ram patches (1-5 only)
- Peter's cleanups on multifd tls IOC referencing
- Steve's cpr patches for vfio (migration patches only)
- Fabiano's fix on mbps stats racing with COMPLETE state
- Fabiano's fix on return path thread hang

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# 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: B918 4DC2 0CC4 57DA CF7D  D1A9 3B5F CCCD F3AB D706

* tag 'migration-next-pull-request' of https://gitlab.com/peterx/qemu: (25 commits)
  migration: Use migrate_has_error() in close_return_path_on_source()
  migration: Join the return path thread before releasing to_dst_file
  migration: Fix qmp_query_migrate mbps value
  migration: options incompatible with cpr
  migration: update cpr-reboot description
  migration: stop vm for cpr
  migration: notifier error checking
  migration: refactor migrate_fd_connect failures
  migration: per-mode notifiers
  migration: MigrationNotifyFunc
  migration: remove postcopy_after_devices
  migration: MigrationEvent for notifiers
  migration: convert to NotifierWithReturn
  migration: remove error from notifier data
  notify: pass error to notifier with return
  migration/multifd: Drop unnecessary helper to destroy IOC
  migration/multifd: Cleanup outgoing_args in state destroy
  migration/multifd: Make multifd_channel_connect() return void
  migration/multifd: Drop registered_yank
  migration/multifd: Cleanup TLS iochannel referencing
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-02-28 17:27:10 +00:00
Pierrick Bouvier
02ca5ec150 docs/devel: plugins can trigger a tb flush
When scoreboards need to be reallocated.

Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240213094009.150349-8-pierrick.bouvier@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240227144335.1196131-30-alex.bennee@linaro.org>
2024-02-28 09:11:42 +00:00
Alex Bennée
f87b220f2a docs/devel: document some plugin assumptions
While we attempt to hide implementation details from the plugin we
shouldn't be totally obtuse. Let the user know what they can and can't
expect with the various instrumentation options.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240227144335.1196131-29-alex.bennee@linaro.org>
2024-02-28 09:11:42 +00:00
Alex Bennée
b0b3c0f562 docs/devel: lift example and plugin API sections up
This makes them a bit more visible in the TCG emulation menu rather
than hiding them away bellow the ToC limit.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240227144335.1196131-28-alex.bennee@linaro.org>
2024-02-28 09:11:42 +00:00
Alex Bennée
af6e4e0a22 contrib/plugins: extend execlog to track register changes
With the new plugin register API we can now track changes to register
values. Currently the implementation is fairly dumb which will slow
down if a large number of register values are being tracked. This
could be improved by only instrumenting instructions which mention
registers we are interested in tracking.

Example usage:

  ./qemu-aarch64 -D plugin.log -d plugin \
     -cpu max,sve256=on \
     -plugin contrib/plugins/libexeclog.so,reg=sp,reg=z\* \
     ./tests/tcg/aarch64-linux-user/sha512-sve

will display in the execlog any changes to the stack pointer (sp) and
the SVE Z registers.

As testing registers every instruction will be quite a heavy operation
there is an additional flag which attempts to optimise the register
tracking by only instrumenting instructions which are likely to change
its value. This relies on the QEMU disassembler showing up the register
names in disassembly so is an explicit opt-in.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Cc: Akihiko Odaki <akihiko.odaki@daynix.com>
Based-On:  <20231025093128.33116-19-akihiko.odaki@daynix.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240227144335.1196131-27-alex.bennee@linaro.org>
2024-02-28 09:11:42 +00:00
Fabiano Rosas
c35462f19b docs/devel/migration.rst: Document the file transport
When adding the support for file migration with the file: transport,
we missed adding documentation for it.

Signed-off-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Peter Xu <peterx@redhat.com>
Link: https://lore.kernel.org/r/20240220224138.24759-2-farosas@suse.de
Signed-off-by: Peter Xu <peterx@redhat.com>
2024-02-28 11:31:28 +08:00
Peter Maydell
a365572b9c docs/devel/reset: Update to discuss system reset
Now that system reset uses a three-phase-reset, update the reset
documentation to include a section describing how this works.
Include documentation of the current major beartrap in reset, which
is that only devices on the qbus tree will get automatically reset.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-id: 20240220160622.114437-11-peter.maydell@linaro.org
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
2024-02-27 13:01:42 +00:00
Peter Maydell
e54c24339f include/qom/object.h: New OBJECT_DEFINE_SIMPLE_TYPE{, _WITH_INTERFACES} macros
We have an OBJECT_DEFINE_TYPE_EXTENDED macro, plus several variations
on it, which emits the boilerplate for the TypeInfo and ensures it is
registered with the type system.  However, all the existing macros
insist that the type being defined has its own FooClass struct, so
they aren't useful for the common case of a simple leaf class which
doesn't have any new methods or any other need for its own class
struct (that is, for the kind of type that OBJECT_DECLARE_SIMPLE_TYPE
declares).

Pull the actual implementation of OBJECT_DEFINE_TYPE_EXTENDED out
into a new DO_OBJECT_DEFINE_TYPE_EXTENDED which parameterizes the
value we use for the class_size field.  This lets us add a new
OBJECT_DEFINE_SIMPLE_TYPE which does the same job as the various
existing OBJECT_DEFINE_*_TYPE_* family macros for this kind of simple
type, and the variant OBJECT_DEFINE_SIMPLE_TYPE_WITH_INTERFACES for
when the type will implement some interfaces.

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20240220160622.114437-5-peter.maydell@linaro.org
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
2024-02-27 13:01:42 +00:00
Markus Armbruster
66227e9047 qapi: Recognize section tags and 'Features:' only after blank line
Putting a blank line before section tags and 'Features:' is good,
existing practice.  Enforce it.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240216145841.2099240-12-armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2024-02-26 10:43:56 +01:00
Markus Armbruster
d23055b8db qapi: Require descriptions and tagged sections to be indented
By convention, we indent the second and subsequent lines of
descriptions and tagged sections, except for examples.

Turn this into a hard rule, and apply it to examples, too.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240216145841.2099240-11-armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
[Straightforward conflicts in qapi/migration.json resolved]
2024-02-26 10:43:56 +01:00
Nicholas Piggin
e5f1500144 tests/avocado: mark boot_linux.py long runtime instead of flaky
The ppc64 and s390x tests were first marked skipIf GITLAB_CI by commit
c0c8687ef0 ("tests/avocado: disable BootLinuxPPC64 test in CI"), and
commit 0f26d94ec9 ("tests/acceptance: skip s390x_ccw_vrtio_tcg on
GitLab") due to being very heavy-weight for gitlab CI.

Commit 9b45cc9931 ("docs/devel: rationalise unstable gitlab tests under
FLAKY_TESTS") changed this to being flaky but it isn't really, it just
had a long runtime.

So take the SPEED=slow variable from qtests and introduce it to avocado,
and make these tests require it.

Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
2024-02-23 23:16:34 +10:00
Manos Pitsidianakis
c555b504d0 docs: correct typos
Correct typos automatically found with the `typos` tool
<https://crates.io/crates/typos>

Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
(mjt: trivial fixup)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2024-02-20 22:20:48 +03:00
Peter Maydell
5767815218 virtio,pc,pci: features, cleanups, fixes
vhost-user-snd support
 x2APIC mode with TCG support
 CXL update to r3.1
 
 fixes, cleanups all over the place.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu into staging

virtio,pc,pci: features, cleanups, fixes

vhost-user-snd support
x2APIC mode with TCG support
CXL update to r3.1

fixes, cleanups all over the place.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

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* tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu: (60 commits)
  MAINTAINERS: Switch to my Enfabrica email
  virtio-gpu-rutabaga.c: override resource_destroy method
  virtio-gpu.c: add resource_destroy class method
  hw/display/virtio-gpu.c: use reset_bh class method
  hw/smbios: Fix port connector option validation
  hw/smbios: Fix OEM strings table option validation
  virtio-gpu: Correct virgl_renderer_resource_get_info() error check
  hw/cxl: Standardize all references on CXL r3.1 and minor updates
  hw/cxl: Update mailbox status registers.
  hw/cxl: Update RAS Capability Definitions for version 3.
  hw/cxl: Update link register definitions.
  hw/cxl: Update HDM Decoder capability to version 3
  tests/acpi: Update DSDT.cxl to reflect change _STA return value.
  hw/i386: Fix _STA return value for ACPI0017
  tests/acpi: Allow update of DSDT.cxl
  hw/mem/cxl_type3: Fix potential divide by zero reported by coverity
  hw/cxl: Pass NULL for a NULL MemoryRegionOps
  hw/cxl: Pass CXLComponentState to cache_mem_ops
  hw/cxl/device: read from register values in mdev_reg_read()
  hw/cxl/mbox: Remove dead code
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-02-14 15:45:52 +00:00
Bernhard Beschow
f165cdf102 exec/ioport: Add portio_list_set_enabled()
Some SuperI/O devices such as the VIA south bridges or the PC87312 controller
allow to enable or disable their SuperI/O functions. Add a convenience function
for implementing this in the VIA south bridges.

The naming of the functions is inspired by its memory_region_set_enabled()
pendant.

Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Message-Id: <20240114123911.4877-7-shentey@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2024-02-14 06:09:32 -05:00
Bernhard Beschow
ad2b652341 exec/ioport: Add portio_list_set_address()
Some SuperI/O devices such as the VIA south bridges or the PC87312 controller
are able to relocate their SuperI/O functions. Add a convenience function for
implementing this in the VIA south bridges.

This convenience function relies on previous simplifications in exec/ioport
which avoids some duplicate synchronization of I/O port base addresses. The
naming of the function is inspired by its memory_region_set_address() pendant.

Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Message-Id: <20240114123911.4877-6-shentey@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2024-02-14 06:09:32 -05:00
Markus Armbruster
0cec50119f qapi: Require member documentation (with loophole)
The QAPI generator forces you to document your stuff.  Except for
command arguments, event data, and members of enum and object types:
these the generator silently "documents" as "Not documented".

We can't require proper documentation there without first fixing all
the offenders.  We've always had too many offenders to pull that off.
Right now, we have more than 500.  Worse, we seem to fix old ones no
faster than we add new ones: in the past year, we fixed 22 ones, but
added 26 new ones.

To help arrest the backsliding, make missing documentation an error
unless the command, type, or event is in listed in new pragma
documentation-exceptions.

List all the current offenders: 117 commands and types in qapi/, and 9
in qga/.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240205074709.3613229-7-armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2024-02-12 10:04:31 +01:00
Markus Armbruster
399c8cd3ba docs/devel/qapi-code-gen: Tweak doc comment whitespace
Missed in commit a937b6aa73 (qapi: Reformat doc comments to conform
to current conventions).

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240205074709.3613229-3-armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2024-02-12 10:04:31 +01:00
Markus Armbruster
1ccdae0b6e docs/devel/qapi-code-gen: Normalize version refs x.y.0 to just x.y
Missed in commit 9bc6e893b7 (qapi: Normalize version references x.y.0
to just x.y).

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240205074709.3613229-2-armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2024-02-12 10:04:30 +01:00
Richard Henderson
d48097d027 tcg: Introduce TCG_COND_TST{EQ,NE}
Add the enumerators, adjust the helpers to match, and dump.
Not supported anywhere else just yet.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-02-03 23:43:47 +00:00
David Woodhouse
1eeb432a95 doc/sphinx/hxtool.py: add optional label argument to SRST directive
We can't just embed labels directly into files like qemu-options.hx which
are included from multiple top-level rST files, because Sphinx sees the
labels as duplicate: https://github.com/sphinx-doc/sphinx/issues/9707

So add an optional argument to the SRST directive which causes a label
of the form '.. _DOCNAME-HXFILE-LABEL:' to be emitted, where 'DOCNAME'
is the name of the top level rST file, 'HXFILE' is the filename of the
.hx file, and 'LABEL' is the text provided within the 'SRST()' directive.
Using the DOCNAME of the top-level rST document means that it is unique
even when the .hx file is included from two different documents, as is
the case for qemu-options.hx

Now where the Xen PV documentation refers to the documentation for the
-initrd command line option, it can emit a link directly to it as
'<system/invocation-qemu-options-initrd>'.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20240130190348.682912-1-dwmw2@infradead.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-02-02 13:51:58 +00:00
Markus Armbruster
b0b1313eb2 qapi: Fix dangling references to docs/devel/qapi-code-gen.txt
Conversion of docs/devel/qapi-code-gen.txt to ReST left several
dangling references behind.  Fix them to point to
docs/devel/qapi-code-gen.rst.

Fixes: f7aa076dbd (docs: convert qapi-code-gen.txt to ReST)
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240120095327.666239-4-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2024-01-26 07:04:53 +01:00
Markus Armbruster
3bc8dc8aa8 docs: Replace dangling references to docs/interop/qmp-intro.txt
Deletion of docs/interop/qmp-intro.txt left two dangling references
behind.  Replace them by references to docs/interop/qmp-spec.rst.

Fixes: 0ec4468f23 (docs/interop: Delete qmp-intro.txt)
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240120095327.666239-3-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2024-01-26 07:04:53 +01:00
Markus Armbruster
1defab0874 docs/devel/qapi-code-gen: Fix missing ':' in tagged section docs
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240120095327.666239-2-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2024-01-26 07:04:53 +01:00
Markus Armbruster
1110fbc35f docs/devel/qapi-code-gen: Don't reserve types ending with 'Kind'
We reserved type names ending with 'Kind' because a simple union
'SomeSimpleUnion' generated both a struct type SomeSimpleUnion and an
enum type SomeSimpleUnionKind.  Gone since commit 4e99f4b12c (qapi:
Drop simple unions).  The commit neglected to update the documentation
not to reserve type names ending with 'Kind'.  Do that now.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20231221145727.835905-1-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2024-01-26 07:04:53 +01:00
Peter Maydell
88cf5fec91 target-arm queue:
* docs/devel/docs: Document .hx file syntax
  * arm_pamax() no longer needs to do feature propagation
  * docs/system/arm/virt.rst: Improve 'highmem' option docs
  * STM32L4x5 Implement SYSCFG and EXTI devices
  * hw/timer: fix systick trace message
  * hw/arm/virt: Consolidate valid CPU types
  * load_elf: fix iterator's type for elf file processing
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Merge tag 'pull-target-arm-20240118' of https://git.linaro.org/people/pmaydell/qemu-arm into staging

target-arm queue:
 * docs/devel/docs: Document .hx file syntax
 * arm_pamax() no longer needs to do feature propagation
 * docs/system/arm/virt.rst: Improve 'highmem' option docs
 * STM32L4x5 Implement SYSCFG and EXTI devices
 * hw/timer: fix systick trace message
 * hw/arm/virt: Consolidate valid CPU types
 * load_elf: fix iterator's type for elf file processing

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# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" [ultimate]
# gpg:                 aka "Peter Maydell <pmaydell@gmail.com>" [ultimate]
# gpg:                 aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" [ultimate]
# gpg:                 aka "Peter Maydell <peter@archaic.org.uk>" [ultimate]
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83  15CF 3C25 25ED 1436 0CDE

* tag 'pull-target-arm-20240118' of https://git.linaro.org/people/pmaydell/qemu-arm:
  load_elf: fix iterator's type for elf file processing
  hw/arm/virt: Consolidate valid CPU types
  hw/timer: fix systick trace message
  tests/qtest: Add STM32L4x5 SYSCFG QTest testcase
  hw/arm: Connect STM32L4x5 SYSCFG to STM32L4x5 SoC
  hw/misc: Implement STM32L4x5 SYSCFG
  tests/qtest: Add STM32L4x5 EXTI QTest testcase
  hw/arm: Connect STM32L4x5 EXTI to STM32L4x5 SoC
  hw/misc: Implement STM32L4x5 EXTI
  docs/system/arm/virt.rst: Improve 'highmem' option docs
  target/arm: arm_pamax() no longer needs to do feature propagation
  docs/devel/docs: Document .hx file syntax

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-01-18 12:48:17 +00:00
Peter Xu
eb9f6daae4 docs/migration: Further move virtio to be feature of migration
Move it one layer down, so taking Virtio-migration as a feature for
migration.

Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Jason Wang <jasowang@redhat.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/r/20240109064628.595453-11-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
2024-01-16 11:16:10 +08:00
Peter Xu
66fd3b1a7a docs/migration: Further move vfio to be feature of migration
Move it one layer down, so taking VFIO-migration as a feature for
migration.

Cc: Alex Williamson <alex.williamson@redhat.com>
Cc: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/r/20240109064628.595453-10-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
2024-01-16 11:16:10 +08:00
Peter Xu
21b17cd011 docs/migration: Organize "Postcopy" page
Reorganize the page, moving things around, and add a few
headlines ("Postcopy internals", "Postcopy features") to cover sub-areas.

Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/r/20240109064628.595453-9-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
2024-01-16 11:16:10 +08:00
Peter Xu
4c6f8a79ae docs/migration: Split "dirty limit"
Split that into a separate file, put under "features".

Cc: Yong Huang <yong.huang@smartx.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/r/20240109064628.595453-8-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
2024-01-16 11:16:10 +08:00
Peter Xu
bfb4c7cd99 docs/migration: Split "Postcopy"
Split postcopy into a separate file.  Introduce a head page "features.rst"
to keep all the features on top of migration framework.

Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/r/20240109064628.595453-7-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
2024-01-16 11:16:10 +08:00