Commit Graph

256 Commits

Author SHA1 Message Date
Philippe Mathieu-Daudé
caff255a54 tpm: Return QMP error when TPM is disabled in build
When the management layer queries a binary built using --disable-tpm
for TPM devices, it gets confused by getting empty responses:

  { "execute": "query-tpm" }
  {
      "return": [
      ]
  }
  { "execute": "query-tpm-types" }
  {
      "return": [
      ]
  }
  { "execute": "query-tpm-models" }
  {
      "return": [
      ]
  }

To make it clearer by returning an error:
- Make the TPM QAPI schema conditional
  All of tpm.json is now 'if': 'defined(CONFIG_TPM)'.
- Adapt the HMP command
- Remove stubs which became unnecessary

The management layer now gets a 'CommandNotFound' error:

  { "execute": "query-tpm" }
  {
      "error": {
          "class": "CommandNotFound",
          "desc": "The command query-tpm has not been found"
      }
  }

Suggested-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
2021-06-15 10:59:02 -04:00
Stefan Berger
e542b71805 sysemu: Make TPM structures inaccessible if CONFIG_TPM is not defined
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210614191335.1968807-5-stefanb@linux.ibm.com>
[PMD: Remove tpm_init() / tpm_cleanup() stubs]
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2021-06-15 10:55:12 -04:00
Stefan Berger
11fb99e6f4 i386: Eliminate all TPM related code if CONFIG_TPM is not set
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210614191335.1968807-2-stefanb@linux.ibm.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2021-06-15 10:54:46 -04:00
Peter Maydell
f9dc72de91 virtio-gpu: add blob resource support.
vhost-user-gpu: security fixes.
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Merge remote-tracking branch 'remotes/kraxel/tags/vga-20210527-pull-request' into staging

virtio-gpu: add blob resource support.
vhost-user-gpu: security fixes.

# gpg: Signature made Thu 27 May 2021 15:23:25 BST
# gpg:                using RSA key A0328CFFB93A17A79901FE7D4CB6D8EED3E87138
# 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/vga-20210527-pull-request: (23 commits)
  virtio-gpu: Update cursor data using blob
  virtio-gpu: Add virtio_gpu_set_scanout_blob
  virtio-gpu: Factor out update scanout
  virtio-gpu: Add helpers to create and destroy dmabuf objects
  ui/pixman: Add qemu_pixman_to_drm_format()
  virtio-gpu: Add virtio_gpu_resource_create_blob
  virtio-gpu: Add initial definitions for blob resources
  virtio-gpu: Refactor virtio_gpu_create_mapping_iov
  virtio-gpu: Refactor virtio_gpu_set_scanout
  virtio-gpu: Add virtio_gpu_find_check_resource
  stubs: Add stubs for udmabuf helpers
  virtio-gpu: Add udmabuf helpers
  headers: Add udmabuf.h
  ui: Get the fd associated with udmabuf driver
  hw/display/qxl: Set pci rom address aligned with page size
  vhost-user-gpu: abstract vg_cleanup_mapping_iov
  vhost-user-gpu: fix OOB write in 'virgl_cmd_get_capset' (CVE-2021-3546)
  vhost-user-gpu: fix memory leak in 'virgl_resource_attach_backing' (CVE-2021-3544)
  vhost-user-gpu: fix memory leak in 'virgl_cmd_resource_unref' (CVE-2021-3544)
  vhost-user-gpu: fix memory leak while calling 'vg_resource_unref' (CVE-2021-3544)
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-05-30 18:33:43 +01:00
Peter Maydell
62c0ac5041 Adjust types for some memory access functions.
Reduce inclusion of tcg headers.
 Fix watchpoints vs replay.
 Fix tcg/aarch64 roli expansion.
 Introduce SysemuCPUOps structure.
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Merge remote-tracking branch 'remotes/rth-gitlab/tags/pull-tcg-20210526' into staging

Adjust types for some memory access functions.
Reduce inclusion of tcg headers.
Fix watchpoints vs replay.
Fix tcg/aarch64 roli expansion.
Introduce SysemuCPUOps structure.

# gpg: Signature made Thu 27 May 2021 00:43:54 BST
# gpg:                using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F
# gpg:                issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [full]
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A  05C0 64DF 38E8 AF7E 215F

* remotes/rth-gitlab/tags/pull-tcg-20210526: (31 commits)
  hw/core: Constify TCGCPUOps
  target/mips: Fold jazz behaviour into mips_cpu_do_transaction_failed
  cpu: Move CPUClass::get_paging_enabled to SysemuCPUOps
  cpu: Move CPUClass::get_memory_mapping to SysemuCPUOps
  cpu: Move CPUClass::get_phys_page_debug to SysemuCPUOps
  cpu: Move CPUClass::asidx_from_attrs to SysemuCPUOps
  cpu: Move CPUClass::write_elf* to SysemuCPUOps
  cpu: Move CPUClass::get_crash_info to SysemuCPUOps
  cpu: Move CPUClass::virtio_is_big_endian to SysemuCPUOps
  cpu: Move CPUClass::vmsd to SysemuCPUOps
  cpu: Introduce SysemuCPUOps structure
  cpu: Move AVR target vmsd field from CPUClass to DeviceClass
  cpu: Rename CPUClass vmsd -> legacy_vmsd
  cpu: Assert DeviceClass::vmsd is NULL on user emulation
  cpu: Directly use get_memory_mapping() fallback handlers in place
  cpu: Directly use get_paging_enabled() fallback handlers in place
  cpu: Directly use cpu_write_elf*() fallback handlers in place
  cpu: Introduce cpu_virtio_is_big_endian()
  cpu: Un-inline cpu_get_phys_page_debug and cpu_asidx_from_attrs
  cpu: Split as cpu-common / cpu-sysemu
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-05-28 16:25:21 +01:00
Vivek Kasireddy
5752519e93 virtio-gpu: Add helpers to create and destroy dmabuf objects
These helpers can be useful for creating dmabuf objects from blobs
and submitting them to the UI.

Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Vivek Kasireddy <vivek.kasireddy@intel.com>
Message-Id: <20210526231429.1045476-12-vivek.kasireddy@intel.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2021-05-27 12:07:37 +02:00
Vivek Kasireddy
9192a40655 stubs: Add stubs for udmabuf helpers
This is needed to ensure that virtio-gpu device works for
non-linux builds.

Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Vivek Kasireddy <vivek.kasireddy@intel.com>
Message-Id: <20210526231429.1045476-5-vivek.kasireddy@intel.com>

[ kraxel: add virtio-gpu-udmabuf.c stubs only when building
          system emulation ]

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2021-05-27 12:06:37 +02:00
Philippe Mathieu-Daudé
feece4d070 cpu: Move CPUClass::vmsd to SysemuCPUOps
Migration is specific to system emulation.

- Move the CPUClass::vmsd field to SysemuCPUOps,
- restrict VMSTATE_CPU() macro to sysemu,
- vmstate_dummy is now unused, remove it.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210517105140.1062037-16-f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-26 15:33:59 -07:00
Paolo Bonzini
632a887350 qemu-config: load modules when instantiating option groups
Right now the SPICE module is special cased to be loaded when processing
of the -spice command line option.  However, the spice option group
can also be brought in via -readconfig, in which case the module is
not loaded.

Add a generic hook to load modules that provide a QemuOpts group,
and use it for the "spice" and "iscsi" groups.

Fixes: #194
Fixes: https://bugs.launchpad.net/qemu/+bug/1910696
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-05-26 14:49:46 +02:00
Peter Maydell
e4f3ede95c usb: fix some memory allocation issues (CVE-2021-3527).
usb: add stubs, allow building without usb subsystem.
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Merge remote-tracking branch 'remotes/kraxel/tags/usb-20210505-pull-request' into staging

usb: fix some memory allocation issues (CVE-2021-3527).
usb: add stubs, allow building without usb subsystem.

# gpg: Signature made Wed 05 May 2021 14:07:02 BST
# gpg:                using RSA key A0328CFFB93A17A79901FE7D4CB6D8EED3E87138
# 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/usb-20210505-pull-request:
  usb: limit combined packets to 1 MiB (CVE-2021-3527)
  usb/mtp: avoid dynamic stack allocation
  usb/redir: avoid dynamic stack allocation (CVE-2021-3527)
  usb/hid: avoid dynamic stack allocation
  hw/usb: Do not build USB subsystem if not required
  hw/usb/host-stub: Remove unused header

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-05-10 19:55:06 +01:00
Philippe Mathieu-Daudé
9c3c834bdd hw/usb: Do not build USB subsystem if not required
If the Kconfig 'USB' value is not selected, it is pointless to
build the USB core components. Add a stub for the HMP commands
and usbdevice_create() which is called by usb_device_add in
softmmu/vl.c.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210424224110.3442424-3-f4bug@amsat.org>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2021-05-04 08:38:23 +02:00
Thomas Huth
4c386f8064 Do not include sysemu/sysemu.h if it's not really necessary
Stop including sysemu/sysemu.h in files that don't need it.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20210416171314.2074665-2-thuth@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-05-02 17:24:50 +02:00
Lukas Straub
e0150291ec yank: Always link full yank code
Yank now only depends on util and can be always linked in. Also remove
the stubs as they are not needed anymore.

Signed-off-by: Lukas Straub <lukasstraub2@web.de>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <997aa12a28c555d8a3b7a363b3bda5c3cf1821ba.1616521341.git.lukasstraub2@web.de>
2021-04-01 15:27:44 +04:00
Lukas Straub
1a92d6d500 yank: Remove dependency on qiochannel
Remove dependency on qiochannel by removing yank_generic_iochannel and
letting migration and chardev use their own yank function for
iochannel.

Signed-off-by: Lukas Straub <lukasstraub2@web.de>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20ff143fc2db23e27cd41d38043e481376c9cec1.1616521341.git.lukasstraub2@web.de>
2021-04-01 15:27:44 +04:00
Paolo Bonzini
b1eee9bb6d qemuutil: remove qemu_set_fd_handler duplicate symbol
libqemuutil has two definitions of qemu_set_fd_handler.  This
is not needed since the only users of the function are
qemu-io.c and the emulators, both of which already include
util/main-loop.c.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <d0c5aa88-029e-4328-7a53-482a3010c5f8@redhat.com>
Tested-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20210318155519.1224118-2-armbru@redhat.com>
2021-03-19 15:43:33 +01:00
Philippe Mathieu-Daudé
6b5fe13786 semihosting: Move include/hw/semihosting/ -> include/semihosting/
We want to move the semihosting code out of hw/ in the next patch.

This patch contains the mechanical steps, created using:

  $ git mv include/hw/semihosting/ include/
  $ sed -i s,hw/semihosting,semihosting, $(git grep -l hw/semihosting)

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210226131356.3964782-2-f4bug@amsat.org>
Message-Id: <20210305135451.15427-2-alex.bennee@linaro.org>
2021-03-10 15:34:12 +00:00
Pavel Dovgalyuk
366a85e4bb replay: fix icount request when replaying clock access
Record/replay provides REPLAY_CLOCK_LOCKED macro to access
the clock when vm_clock_seqlock is locked. This macro is
needed because replay internals operate icount. In locked case
replay use icount_get_raw_locked for icount request, which prevents
excess locking which leads to deadlock. But previously only
record code used *_locked function and replay did not.
Therefore sometimes clock access lead to deadlocks.
This patch fixes clock access for replay too and uses *_locked
icount access function.

Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru>
Message-Id: <161347990483.1313189.8371838968343494161.stgit@pasha-ThinkPad-X280>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-02-16 17:15:39 +01:00
Philippe Mathieu-Daudé
9b45a025ed qapi/meson: Restrict qdev code to system-mode emulation
Beside a CPU device, user-mode emulation doesn't access
anything else from qdev subsystem.

Tools don't need anything from qdev.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210122204441.2145197-10-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-02-08 14:43:55 +01:00
Lukas Straub
228e3ec4e2 Fix build with new yank feature by adding stubs
Fixes: 50186051f4 ("Introduce yank feature")
Signed-off-by: Lukas Straub <lukasstraub2@web.de>
[AJB: tweak MAINTAINERS]
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210114141918.5201cc9c@gecko.fritz.box>
Message-Id: <20210114165730.31607-11-alex.bennee@linaro.org>
2021-01-18 10:04:31 +00:00
Paolo Bonzini
5a1ee6077b chardev: do not use machine_init_done
machine_init_done is not the right flag to check when preconfig
is taken into account; for example "./qemu-system-x86_64 -serial
mon:stdio -preconfig" does not print the QEMU monitor header until after
exit_preconfig.  Add back a custom bool for mux character devices.  This
partially undoes commit c7278b4355 ("chardev: introduce chr_machine_done
hook", 2018-03-12), but it keeps the cleaner logic using a function
pointer in ChardevClass.

Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-12-15 12:51:51 -05:00
Paolo Bonzini
164dafd174 remove preconfig state
The preconfig state is only used if -incoming is not specified, which
makes the RunState state machine more tricky than it need be.  However
there is already an equivalent condition which works even with -incoming,
namely qdev_hotplug.  Use it instead of a separate runstate.

Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-12-15 12:51:48 -05:00
David Hildenbrand
b430b51395 util/vfio-helpers.c: Use ram_block_discard_disable() in qemu_vfio_open_pci()
Currently, when using "nvme://" for a block device, like
    -drive file=nvme://0000:01:00.0/1,if=none,id=drive0 \
    -device virtio-blk,drive=drive0 \

VFIO may pin all guest memory, and discarding of RAM no longer works as
expected. I was able to reproduce this easily with my
    01:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd
            NVMe SSD Controller SM981/PM981/PM983

Similar to common VFIO, we have to disable it, making sure that:
a) virtio-balloon won't discard any memory ("silently disabled")
b) virtio-mem and nvme:// run mutually exclusive

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Alex Williamson <alex.williamson@redhat.com>
Cc: Wei Yang <richardw.yang@linux.intel.com>
Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Pankaj Gupta <pankaj.gupta.linux@gmail.com>
Cc: Peter Xu <peterx@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20201116105947.9194-1-david@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-11-16 13:22:17 -05:00
Alex Bennée
d67ef04cb8 stubs/xen-hw-stub: drop xenstore_store_pv_console_info stub
We should never build something that calls this without having it.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20201110192316.26397-6-alex.bennee@linaro.org>
2020-11-16 11:07:53 +00:00
Peter Maydell
a95e0396c8 * fix --disable-tcg builds (Claudio)
* Fixes for macOS --enable-modules build and OpenBSD curses/iconv detection (myself)
 * Start preparing for meson 0.56 (myself)
 * Move directory configuration to meson (myself)
 * Start untangling qemu_init (myself)
 * Windows fixes (Sunil)
 * Remove -no-kbm (Thomas)
 -----BEGIN PGP SIGNATURE-----
 
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Merge remote-tracking branch 'remotes/bonzini-gitlab/tags/for-upstream' into staging

* fix --disable-tcg builds (Claudio)
* Fixes for macOS --enable-modules build and OpenBSD curses/iconv detection (myself)
* Start preparing for meson 0.56 (myself)
* Move directory configuration to meson (myself)
* Start untangling qemu_init (myself)
* Windows fixes (Sunil)
* Remove -no-kbm (Thomas)

# gpg: Signature made Mon 26 Oct 2020 11:12:17 GMT
# gpg:                using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg:                issuer "pbonzini@redhat.com"
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>" [full]
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4  E2F7 7E15 100C CD36 69B1
#      Subkey fingerprint: F133 3857 4B66 2389 866C  7682 BFFB D25F 78C7 AE83

* remotes/bonzini-gitlab/tags/for-upstream:
  machine: move SMP initialization from vl.c
  machine: move UP defaults to class_base_init
  machine: remove deprecated -machine enforce-config-section option
  win32: boot broken when bind & data dir are the same
  WHPX: Fix WHPX build break
  configure: move install_blobs from configure to meson
  configure: remove unused variable from config-host.mak
  configure: move directory options from config-host.mak to meson
  configure: allow configuring localedir
  Makefile: separate meson rerun from the rest of the ninja invocation
  Remove deprecated -no-kvm option
  replay: do not build if TCG is not available
  qtest: unbreak non-TCG builds in bios-tables-test
  hw/core/qdev-clock: add a reference on aliased clocks
  do not use colons in test names
  meson: rewrite curses/iconv test
  build: fix macOS --enable-modules build

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-10-26 15:49:11 +00:00
Stefan Hajnoczi
cbc20bfb8f block: move block exports to libblockdev
Block exports are used by softmmu, qemu-storage-daemon, and qemu-nbd.
They are not used by other programs and are not otherwise needed in
libblock.

Undo the recent move of blockdev-nbd.c from blockdev_ss into block_ss.
Since bdrv_close_all() (libblock) calls blk_exp_close_all()
(libblockdev) a stub function is required..

Make qemu-nbd.c use signal handling utility functions instead of
duplicating the code. This helps because os-posix.c is in libblockdev
and it depends on a qemu_system_killed() symbol that qemu-nbd.c lacks.
Once we use the signal handling utility functions we also end up
providing the necessary symbol.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 20200929125516.186715-4-stefanha@redhat.com
[Fixed s/ndb/nbd/ typo in commit description as suggested by Eric Blake
--Stefan]
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2020-10-23 13:42:16 +01:00
Claudio Fontana
9b1c911654 replay: do not build if TCG is not available
this fixes non-TCG builds broken recently by replay reverse debugging.

Stub the needed functions in stub/, splitting roughly between functions
needed only by system emulation, by system emulation and tools,
and by everyone.  This includes duplicating some code in replay/, and
puts the logic for non-replay related events in the replay/ module (+
the stubs), so this should be revisited in the future.

Surprisingly, only _one_ qtest was affected by this, ide-test.c, which
resulted in a buzz as the bh events were never delivered, and the bh
never executed.

Many other subsystems _should_ have been affected.

This fixes the immediate issue, however a better way to group replay
functionality to TCG-only code could be developed in the long term.

Signed-off-by: Claudio Fontana <cfontana@suse.de>
Message-Id: <20201013192123.22632-4-cfontana@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-22 11:53:54 -04:00
Kevin Wolf
e69ee454b5 monitor: Make current monitor a per-coroutine property
This way, a monitor command handler will still be able to access the
current monitor, but when it yields, all other code code will correctly
get NULL from monitor_cur().

This uses a hash table to map the coroutine pointer to the current
monitor of that coroutine.  Outside of coroutine context, we associate
the current monitor with the leader coroutine of the current thread.

Approaches to implement some form of coroutine local storage directly in
the coroutine core code have been considered and discarded because they
didn't end up being much more generic than the hash table and their
performance impact on coroutines not using coroutine local storage was
unclear. As the block layer uses a coroutine per I/O request, this is a
fast path and we have to be careful. It's safest to just stay out of
this path with code only used by the monitor.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20201005155855.256490-8-kwolf@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2020-10-09 07:08:19 +02:00
Kevin Wolf
41725fa7ed qmp: Call monitor_set_cur() only in qmp_dispatch()
The correct way to set the current monitor for a coroutine handler will
be different than for a blocking handler, so monitor_set_cur() needs to
be called in qmp_dispatch().

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20201005155855.256490-7-kwolf@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2020-10-09 07:08:19 +02:00
Kevin Wolf
947e47448d monitor: Use getter/setter functions for cur_mon
cur_mon really needs to be coroutine-local as soon as we move monitor
command handlers to coroutines and let them yield. As a first step, just
remove all direct accesses to cur_mon so that we can implement this in
the getter function later.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20201005155855.256490-4-kwolf@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2020-10-09 07:08:19 +02:00
Pavel Dovgalyuk
cda382594b gdbstub: add reverse continue support in replay mode
This patch adds support of the reverse continue operation for gdbstub.
Reverse continue finds the last breakpoint that would happen in normal
execution from the beginning to the current moment.
Implementation of the reverse continue replays the execution twice:
to find the breakpoints that were hit and to seek to the last breakpoint.
Reverse continue loads the previous snapshot and tries to find the breakpoint
since that moment. If there are no such breakpoints, it proceeds to
the earlier snapshot, and so on. When no breakpoints or watchpoints were
hit at all, execution stops at the beginning of the replay log.

Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru>
Message-Id: <160174522930.12451.6994758004725016836.stgit@pasha-ThinkPad-X280>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-06 08:34:49 +02:00
Pavel Dovgalyuk
fda8458bd3 gdbstub: add reverse step support in replay mode
GDB remote protocol supports two reverse debugging commands:
reverse step and reverse continue.
This patch adds support of the first one to the gdbstub.
Reverse step is intended to step one instruction in the backwards
direction. This is not possible in regular execution.
But replayed execution is deterministic, therefore we can load one of
the prior snapshots and proceed to the desired step. It is equivalent
to stepping one instruction back.
There should be at least one snapshot preceding the debugged part of
the replay log.

Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>

--

v4 changes:
 - inverted condition in cpu_handle_guest_debug (suggested by Alex Bennée)
Message-Id: <160174522341.12451.1498758422543765253.stgit@pasha-ThinkPad-X280>

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-06 08:34:49 +02:00
Pavel Dovgalyuk
b39847a505 migration: introduce icount field for snapshots
Saving icount as a parameters of the snapshot allows navigation between
them in the execution replay scenario.
This information can be used for finding a specific snapshot for proceeding
the recorded execution to the specific moment of the time.
E.g., 'reverse step' action (introduced in one of the following patches)
needs to load the nearest snapshot which is prior to the current moment
of time.
This patch also updates snapshot test which verifies qemu monitor output.

Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru>
Acked-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Kevin Wolf <kwolf@redhat.com>

--

v4 changes:
 - squashed format update with test output update
v7 changes:
 - introduced the spaces between the fields in snapshot info output
 - updated the test to match new field widths
Message-Id: <160174518865.12451.14327573383978752463.stgit@pasha-ThinkPad-X280>

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-06 08:34:49 +02:00
Claudio Fontana
430065dab0 cpus: prepare new CpusAccel cpu accelerator interface
The new interface starts unused, will start being used by the
next patches.

It provides methods for each accelerator to start a vcpu, kick a vcpu,
synchronize state, get cpu virtual clock and elapsed ticks.

In qemu_wait_io_event, make it clear that APC is used only for HAX
on Windows.

Signed-off-by: Claudio Fontana <cfontana@suse.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-05 16:41:22 +02:00
Claudio Fontana
8191d36841 icount: rename functions to be consistent with the module name
Signed-off-by: Claudio Fontana <cfontana@suse.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-05 16:41:22 +02:00
Claudio Fontana
740b175973 cpu-timers, icount: new modules
refactoring of cpus.c continues with cpu timer state extraction.

cpu-timers: responsible for the softmmu cpu timers state,
            including cpu clocks and ticks.

icount: counts the TCG instructions executed. As such it is specific to
the TCG accelerator. Therefore, it is built only under CONFIG_TCG.

One complication is due to qtest, which uses an icount field to warp time
as part of qtest (qtest_clock_warp).

In order to solve this problem, provide a separate counter for qtest.

This requires fixing assumptions scattered in the code that
qtest_enabled() implies icount_enabled(), checking each specific case.

Signed-off-by: Claudio Fontana <cfontana@suse.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
[remove redundant initialization with qemu_spice_init]
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
[fix lingering calls to icount_get]
Signed-off-by: Claudio Fontana <cfontana@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-05 16:41:22 +02:00
Philippe Mathieu-Daudé
c834596f79 hw/xen: Split x86-specific declaration from generic hardware ones
xen_hvm_init() is restricted to the X86 architecture.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200908155530.249806-6-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-09-30 19:11:36 +02:00
Philippe Mathieu-Daudé
71f364b703 stubs: Split accelerator / hardware related stubs
Move hardware stubs unrelated from the accelerator to xen-hw-stub.c.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200908155530.249806-5-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-09-30 19:11:36 +02:00
Philippe Mathieu-Daudé
f68c01470b qapi: Restrict query-uuid command to machine code
Only qemu-system-FOO and qemu-storage-daemon provide QMP
monitors, therefore such declarations and definitions are
irrelevant for user-mode emulation.

Restricting the query-uuid command to machine.json pulls less
QAPI-generated code into user-mode.

Acked-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200913195348.1064154-6-philmd@redhat.com>
[Commit message tweaked]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2020-09-29 15:41:35 +02:00
Philippe Mathieu-Daudé
db0f08df59 qapi: Restrict query-vm-generation-id command to machine code
Only qemu-system-FOO and qemu-storage-daemon provide QMP
monitors, therefore such declarations and definitions are
irrelevant for user-mode emulation.

Restricting the query-vm-generation-id command to machine.json pulls
less QAPI-generated code into user-mode.

Acked-by: Igor Mammedov <imammedo@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200913195348.1064154-5-philmd@redhat.com>
[Commit message tweaked]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2020-09-29 15:41:35 +02:00
Daniel P. Berrangé
60efffa41b monitor: simplify functions for getting a dup'd fdset entry
Currently code has to call monitor_fdset_get_fd, then dup
the return fd, and then add the duplicate FD back into the
fdset. This dance is overly verbose for the caller and
introduces extra failure modes which can be avoided by
folding all the logic into monitor_fdset_dup_fd_add and
removing monitor_fdset_get_fd entirely.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2020-09-16 10:33:48 +01:00
Thomas Huth
8c2787629e stubs: Move qemu_fd_register stub to util/main-loop.c
The linker of MinGW sometimes runs into the following problem:

libqemuutil.a(util_main-loop.c.obj): In function `qemu_fd_register':
/builds/huth/qemu/build/../util/main-loop.c:331: multiple definition of
 `qemu_fd_register'
libqemuutil.a(stubs_fd-register.c.obj):/builds/huth/qemu/stubs/fd-register.c:5:
 first defined here
collect2: error: ld returned 1 exit status
/builds/huth/qemu/rules.mak:88: recipe for target 'tests/test-timed-average.exe'
 failed

qemu_fd_register() is defined in util/main-loop.c for WIN32, so let's simply
move the stub also there in the #else part of the corresponding #ifndef
to fix this problem.

Message-Id: <20200903054503.425435-1-thuth@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2020-09-07 12:34:17 +02:00
Thomas Huth
b0476d6602 stubs: Move qemu_timer_notify_cb() and remove qemu_notify_event() stub
When cross-compiling with MinGW, there are sometimes some weird linker
errors like:

ibqemuutil.a(util_main-loop.c.obj): In function `qemu_notify_event':
/builds/huth/qemu/build/../util/main-loop.c:139: multiple definition of
 `qemu_notify_event'
libqemuutil.a(stubs_notify-event.c.obj):/builds/huth/qemu/stubs/notify-event.c:5:
 first defined here
collect2: error: ld returned 1 exit status
/builds/huth/qemu/rules.mak:88: recipe for target 'tests/test-timed-average.exe'
 failed

It seems like it works better when the qemu_timer_notify_cb() stub (which
calls qemu_notify_event()) is in a separate file - then we can also even
remove the qemu_notify_event() stub now.

This patch is based on ideas from the patch "stubs: Remove qemu_notify_event()"
by Philippe Mathieu-Daudé and the patch "cpu-timers, icount: new modules" from
Claudio Fontana.

Message-Id: <20200902102433.304737-1-thuth@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2020-09-07 12:34:17 +02:00
Philippe Mathieu-Daudé
1538d76345 stubs/cmos: Use correct include
cmos_get_fd_drive_type() is declared in "hw/block/fdc.h".
This currently works because "hw/i386/pc.h" happens to
include it. Simplify including the correct header.

Fixes: 2055dbc1c9 ("acpi: move aml builder code for floppy device")
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-Id: <20200724084315.1606-1-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-09-01 09:10:58 +02:00
Paolo Bonzini
a81df1b68b libqemuutil, qapi, trace: convert to meson
This shows how to do some "computations" in meson.build using its array
and dictionary data structures, and also a basic usage of the sourceset
module for conditional compilation.

Notice the new "if have_system" part of util/meson.build, which fixes
a bug in the old build system was buggy: util/dbus.c was built even for
non-softmmu builds, but the dependency on -lgio was lost when the linking
was done through libqemuutil.a.  Because all of its users required gio
otherwise, the bug was hidden.  Meson instead propagates libqemuutil's
dependencies down to its users, and shows the problem.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-08-21 06:30:08 -04:00
Markus Armbruster
d64072c0ac Revert "tpm: Clean up error reporting in tpm_init_tpmdev()"
This reverts commit d10e05f15d.

We report some -tpmdev failures, but then continue as if all was fine.
Reproducer:

    $ qemu-system-x86_64 -nodefaults -S -display none -monitor stdio -chardev null,id=tpm0 -tpmdev emulator,id=tpm0,chardev=chrtpm -device tpm-tis,tpmdev=tpm0
    qemu-system-x86_64: -tpmdev emulator,id=tpm0,chardev=chrtpm: tpm-emulator: tpm chardev 'chrtpm' not found.
    qemu-system-x86_64: -tpmdev emulator,id=tpm0,chardev=chrtpm: tpm-emulator: Could not cleanly shutdown the TPM: No such file or directory
    QEMU 5.0.90 monitor - type 'help' for more information
    (qemu) qemu-system-x86_64: -device tpm-tis,tpmdev=tpm0: Property 'tpm-tis.tpmdev' can't find value 'tpm0'
    $ echo $?
    1

This is a regression caused by commit d10e05f15d "tpm: Clean up error
reporting in tpm_init_tpmdev()".  It's incomplete: be->create(opts)
continues to use error_report(), and we don't set an error when it
fails.

I figure converting the create() methods to Error would make some
sense, but I'm not sure it's worth the effort right now.  Revert the
broken commit instead, and add a comment to tpm_init_tpmdev().

Straightforward conflict in tpm.c resolved.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
2020-07-24 12:44:13 -04:00
Peter Maydell
3d7cad3c23 trivial branch patches 20200707
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Merge remote-tracking branch 'remotes/vivier2/tags/trivial-branch-for-5.1-pull-request' into staging

trivial branch patches 20200707

# gpg: Signature made Tue 07 Jul 2020 11:52:06 BST
# gpg:                using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C
# gpg:                issuer "laurent@vivier.eu"
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full]
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>" [full]
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full]
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F  5173 F30C 38BD 3F2F BE3C

* remotes/vivier2/tags/trivial-branch-for-5.1-pull-request:
  net/tap-solaris.c: Include qemu-common.h for TFR macro
  intel_iommu: "aw-bits" error message still refers to "x-aw-bits"
  util/qemu-option: Document the get_opt_value() function
  MAINTAINERS: Update Radoslaw Biernacki email address
  .mailmap: Update Alexander Graf email address
  trivial: Respect alphabetical order of .o files in Makefile.objs
  fix the prototype of muls64/mulu64

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-07-09 14:13:19 +01:00
Christophe de Dinechin
be99a9a09d trivial: Respect alphabetical order of .o files in Makefile.objs
The vmgenid.o is the only file that is not in alphabetical order.

Signed-off-by: Christophe de Dinechin <dinechin@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200629094934.2081180-1-dinechin@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-07-07 12:38:50 +02:00
Gerd Hoffmann
3af87d9169 stubs: add pci_create_simple
Needed for -soundhw cleanup.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20200702132525.6849-3-kraxel@redhat.com
2020-07-06 17:01:11 +02:00
Gerd Hoffmann
89aa165e1d stubs: add isa_create_simple
Needed for -soundhw cleanup.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20200702132525.6849-2-kraxel@redhat.com
2020-07-06 17:01:11 +02:00
Gerd Hoffmann
2055dbc1c9 acpi: move aml builder code for floppy device
DSDT change: isa device order changes in case MI1 (ipmi) is present.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20200619091905.21676-4-kraxel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-06-24 17:18:28 -04:00