Commit Graph

151 Commits

Author SHA1 Message Date
Dr. David Alan Gilbert df59feb197 global: Squash 'the the'
'the' has a tendency to double up; squash them back down.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20191104185202.102504-1-dgilbert@redhat.com>
[lv: removed disas/libvixl/vixl/invalset.h change]
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-11-06 17:19:40 +01:00
Shameer Kolothum e86fba5009 docs/specs: Add ACPI GED documentation
Documents basic concepts of ACPI Generic Event device(GED)
and interface between QEMU and the ACPI BIOS.

Signed-off-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Message-Id: <20190918130633.4872-10-shameerali.kolothum.thodi@huawei.com>
Acked-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2019-10-05 17:12:09 -04:00
Michael Roth 1daba4d1b2 docs/specs: initial spec summary for Ultravisor-related hcalls
For now this only covers hcalls relating to TPM communication since
it's the only one particularly important from a QEMU perspective atm,
but others can be added here where it makes sense.

The full specification for all hcalls/ucalls will eventually be made
available in the public/OpenPower version of the PAPR specification.

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Message-Id: <20190717205842.17827-2-mdroth@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2019-08-21 17:17:12 +10:00
Greg Kurz 7abc0c6d35 xics/spapr: Detect old KVM XICS on POWER9 hosts
Older KVMs on POWER9 don't support destroying/recreating a KVM XICS
device, which is required by 'dual' interrupt controller mode. This
causes QEMU to emit a warning when the guest is rebooted and to fall
back on XICS emulation:

qemu-system-ppc64: warning: kernel_irqchip allowed but unavailable:
 Error on KVM_CREATE_DEVICE for XICS: File exists

If kernel irqchip is required, QEMU will thus exit when the guest is
first rebooted. Failing QEMU this late may be a painful experience
for the user.

Detect that and exit at machine init instead.

Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <156044430517.125694.6207865998817342638.stgit@bahia.lab.toulouse-stg.fr.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2019-07-02 09:43:58 +10:00
Cédric Le Goater b87a0100cd docs: updates on the POWER9 XIVE interrupt controller documentation
This includes various small updates and a better description of the
chosen interrupt mode resulting from the combination of the 'ic-mode'
machine option, the 'kernel_irqchip' option, guest support and KVM
support.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20190612160425.27670-1-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2019-07-02 09:43:58 +10:00
Peter Maydell 0783a732f9 docs: Build and install specs manual
Now we have some rST format docs in the docs/specs/ manual, we should
actually build and install it.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Message-id: 20190610152444.20859-3-peter.maydell@linaro.org
2019-06-17 15:35:31 +01:00
Peter Maydell 9b4cc0c2d4 docs/specs/index.rst: Fix minor syntax issues
The docs/specs/index.rst has a couple of minor issues which
we didn't notice because we weren't building the manual:
 * the ToC entry for the new PPC XIVE docs points to
   a nonexistent file
 * the initial comment needs to be marked by '..', not '.',
   or it will appear in the output
 * the title doesn't match the capitialization used by
   the existing interop or devel manuals, and uses
   'full-system emulation' rather than the 'system emulation'
   that the interop manual title uses

Fix these minor issues before we start trying to build the manual.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Acked-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Message-id: 20190610152444.20859-2-peter.maydell@linaro.org
2019-06-17 15:35:31 +01:00
Cédric Le Goater 24563a587f docs: provide documentation on the POWER9 XIVE interrupt controller
This documents the overall XIVE architecture and the XIVE support for
sPAPR guest machines (pseries).

It also provides documentation on the 'info pic' command.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20190521082411.24719-1-clg@kaod.org>
Reviewed-by: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2019-05-29 11:39:47 +10:00
Marc-André Lureau ec86c0f678 acpi: add ACPI memory clear interface
The interface is described in the "TCG Platform Reset Attack
Mitigation Specification", chapter 6 "ACPI _DSM Function". According
to Laszlo, it's not so easy to implement in OVMF, he suggested to do
it in qemu instead.

See specification documentation for more details, and next commit for
memory clear on reset handling.

The underlying TCG specification is accessible from the following
page.

https://trustedcomputinggroup.org/resource/pc-client-work-group-platform-reset-attack-mitigation-specification-version-1-0/

This patch implements version 1.0.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Tested-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2019-01-17 21:10:57 -05:00
Stefan Berger ac6dd31e3f acpi: build TPM Physical Presence interface
The TPM Physical Presence interface consists of an ACPI part, a shared
memory part, and code in the firmware. Users can send messages to the
firmware by writing a code into the shared memory through invoking the
ACPI code. When a reboot happens, the firmware looks for the code and
acts on it by sending sequences of commands to the TPM.

This patch adds the ACPI code. It is similar to the one in EDK2 but doesn't
assume that SMIs are necessary to use. It uses a similar datastructure for
the shared memory as EDK2 does so that EDK2 and SeaBIOS could both make use
of it. I extended the shared memory data structure with an array of 256
bytes, one for each code that could be implemented. The array contains
flags describing the individual codes. This decouples the ACPI implementation
from the firmware implementation.

The underlying TCG specification is accessible from the following page.

https://trustedcomputinggroup.org/tcg-physical-presence-interface-specification/

This patch implements version 1.30.

Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
[ Marc-André - ACPI code improvements and windows fixes ]
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2019-01-17 21:10:57 -05:00
Stefan Berger 0fe2466903 acpi: expose TPM/PPI configuration parameters to firmware via fw_cfg
To avoid having to hard code the base address of the PPI virtual
memory device we introduce a fw_cfg file etc/tpm/config that holds the
base address of the PPI device, the version of the PPI interface and
the version of the attached TPM.

Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
[ Marc-André: renamed to etc/tpm/config, made it static, document it ]
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2019-01-17 21:10:57 -05:00
Thomas Huth 5a0e75f0a9 hw/misc/ivshmem: Remove deprecated "ivshmem" legacy device
It's been marked as deprecated in QEMU v2.6.0 already, so really nobody
should use the legacy "ivshmem" device anymore (but use ivshmem-plain or
ivshmem-doorbell instead). Time to remove the deprecated device now.

Belatedly also update a mention of the deprecated "ivshmem" in the file
docs/specs/ivshmem-spec.txt to "ivshmem-doorbell". Missed in commit
5400c02b90 ("ivshmem: Split ivshmem-plain, ivshmem-doorbell off ivshmem").

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2019-01-14 19:31:04 -05:00
Gerd Hoffmann 417463341e pci-testdev: add optional memory bar
Add memory bar to pci-testdev.  Size is configurable using the membar
property.  Setting the size to zero (default) turns it off.  Can be used
to check whether guests handle large pci bars correctly.

Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-11-05 13:24:02 -05:00
Stefan Berger 7931cf3126 docs: tpm: Mention implemented TPM CRB interface emulation and specs
Add a few sentences about the implemented emulation of the TPM CRB
interface and its specification.

Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
2018-10-30 17:33:53 -04:00
Gerd Hoffmann d46b40fce2 display/stdvga: add edid support.
This patch adds edid support to the qemu stdvga.  It is turned off by
default and can be enabled with the new edid property.  The patch also
adds xres and yres properties to specify the video mode you want the
guest use.  Works only with edid enabled and updated guest driver.

The mmio bar of the stdvga has some unused address space at the start.
It was reserved just in case it'll be needed for virtio, but it turned
out to not be needed for that.  So let's use that region to place the
EDID data block there.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20180925075646.25114-6-kraxel@redhat.com
2018-09-27 08:07:51 +02:00
Ville Skyttä 9277d81f5c docs: Grammar and spelling fixes
Signed-off-by: Ville Skyttä <ville.skytta@iki.fi>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 20180612065150.21110-1-ville.skytta@iki.fi
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-07-13 10:16:04 +01:00
Thomas Huth a1d30f285e Replace '-enable-kvm' with '-accel kvm' in docs and help texts
The preferred way to select the KVM accelerator is to use "-accel kvm"
these days, so let's be consistent in our documentation and help texts.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1528866321-23886-3-git-send-email-thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-06-28 19:05:32 +02:00
Peter Maydell b706ec24f1 Merge tpm 2018/05/23 v4
-----BEGIN PGP SIGNATURE-----
 
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Merge remote-tracking branch 'remotes/stefanberger/tags/pull-tpm-2018-05-23-4' into staging

Merge tpm 2018/05/23 v4

# gpg: Signature made Sat 26 May 2018 03:52:12 BST
# gpg:                using RSA key 75AD65802A0B4211
# gpg: Good signature from "Stefan Berger <stefanb@linux.vnet.ibm.com>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: B818 B9CA DF90 89C2 D5CE  C66B 75AD 6580 2A0B 4211

* remotes/stefanberger/tags/pull-tpm-2018-05-23-4:
  test: Add test cases that use the external swtpm with CRB interface
  docs: tpm: add VM save/restore example and troubleshooting guide
  tpm: extend TPM TIS with state migration support
  tpm: extend TPM emulator with state migration support

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-05-29 09:57:09 +01:00
Stefan Berger 9d1f0985a7 docs: tpm: add VM save/restore example and troubleshooting guide
Extend the docs related to TPM with specs related to VM save and
restore and a troubleshooting guide for TPM migration.

Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2018-05-24 12:07:04 -04:00
Gerd Hoffmann 50a6fa8f93 allocate pci id for mdpy
mdpy is a sample pci device for vfio-mdev.  Not (yet) merged upstream,
patch available here:

https://www.kraxel.org/cgit/linux/commit/?h=vfio-sample-display&id=6fd86cff3d7df38ab89625b16fdd6434b1c18749

Cc: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-05-23 03:14:40 +03:00
Bharata B Rao a324d6f166 spapr: Support ibm,dynamic-memory-v2 property
The new property ibm,dynamic-memory-v2 allows memory to be represented
in a more compact manner in device tree.

Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2018-04-27 18:05:23 +10:00
Marc-André Lureau 59fbfed9b8 docs/vmcoreinfo: detail unsupported host format behaviour
Suggested-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-03-01 18:17:47 +02:00
Stefan Berger 83e83c34b2 specs: Extend TPM spec with TPM emulator description
Following the recent extension of QEMU with a TPM emulator device,
update the specs describing for how to interact with the device.

The results of commands run inside a Linux VM are expected to be
similar to those when the TPM passthrough device is used, so we
just reuse that.

Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
2017-11-15 06:47:35 -05:00
Peter Maydell c5bbcaa4b7 pc, pci, virtio: fixes, features
A bunch of fixes all over the place.
 A new vmcore device - the user interface around it is still somewhat
 controversial, but I feel most of the code is fine, suggestions can be
 addressed by adding patches on top.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

pc, pci, virtio: fixes, features

A bunch of fixes all over the place.
A new vmcore device - the user interface around it is still somewhat
controversial, but I feel most of the code is fine, suggestions can be
addressed by adding patches on top.

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

# gpg: Signature made Sun 15 Oct 2017 04:02:23 BST
# gpg:                using RSA key 0x281F0DB8D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>"
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17  0970 C350 3912 AFBE 8E67
#      Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA  8A0D 281F 0DB8 D28D 5469

* remotes/mst/tags/for_upstream: (26 commits)
  tests/pxe: Test more NICs when running in SPEED=slow mode
  pc: remove useless hot_add_cpu initialisation
  isapc: Remove unnecessary migration compatibility code
  virtio-pci: Replace modern_as with direct access to modern_bar
  virtio: fix descriptor counting in virtqueue_pop
  hw/gen_pcie_root_port: make IO RO 0 on IO disabled
  pci: Validate interfaces on base_class_init
  xen/pt: Mark TYPE_XEN_PT_DEVICE as hybrid
  pci: Add INTERFACE_CONVENTIONAL_PCI_DEVICE to Conventional PCI devices
  pci: Add INTERFACE_PCIE_DEVICE to all PCIe devices
  pci: Add interface names to hybrid PCI devices
  pci: conventional-pci-device and pci-express-device interfaces
  PCI: PCIe access should always be little endian
  virtio/pci/migration: Convert to VMState
  hw/pci-bridge/pcie_pci_bridge: properly handle MSI unavailability case
  pci: allow 32-bit PCI IO accesses to pass through the PCI bridge
  virtio/vhost: reset dev->log after syncing
  MAINTAINERS: add Dump maintainers
  scripts/dump-guest-memory.py: add vmcoreinfo
  kdump: set vmcoreinfo location
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-10-16 17:29:16 +01:00
Marc-André Lureau d9feb51772 dump: update phys_base header field based on VMCOREINFO content
If the guest note is VMCOREINFO, try to get phys_base from it.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2017-10-15 05:54:40 +03:00
Marc-André Lureau 6e43353f10 hw/misc: add vmcoreinfo device
See docs/specs/vmcoreinfo.txt for details.

"etc/vmcoreinfo" fw_cfg entry is added when using "-device vmcoreinfo".

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2017-10-15 05:54:40 +03:00
Stefan Berger 8dc6701722 specs: Describe the TPM support in QEMU
This patch adds a description of the current TPM support in QEMU
to the specs.

Several public specs are referenced via their landing page on the
trustedcomputinggroup.org website.

Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
2017-10-13 07:34:33 -04:00
Philippe Mathieu-Daudé 25e11d8774 docs: fix broken paths to docs/specs/ivshmem-spec.txt
When this file was rewritten/renamed in fdee2025dd,
a reference path was not updated.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2017-07-31 13:13:01 +03:00
Paolo Bonzini d59157ea05 docs: create interop/ subdirectory
This is for the future interoperability & management guide.  It includes
the QAPI docs, including the automatically generated ones, other socket
protocols (vhost-user, VNC), and the qcow2 file format.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-06-15 11:18:39 +02:00
Maxime Coquelin 6dcdd06e3b spec/vhost-user spec: Add IOMMU support
This patch specifies and implements the master/slave communication
to support device IOTLB in slave.

The vhost_iotlb_msg structure introduced for kernel backends is
re-used, making the design close between the two backends.

An exception is the use of the secondary channel to enable the
slave to send IOTLB miss requests to the master.

Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2017-06-02 18:57:17 +03:00
Marc-André Lureau 4bbeeba023 vhost-user: add slave-req-fd support
Learn to give a socket to the slave to let him make requests to the
master.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2017-06-02 18:57:17 +03:00
Ben Warren 20f5d14dc9 docs: VM Generation ID device description
This patch is based off an earlier version by
Gal Hammer (ghammer@redhat.com)

Requirements section, ASCII diagrams and overall help
provided by Laszlo Ersek (lersek@redhat.com)

Signed-off-by: Gal Hammer <ghammer@redhat.com>
Signed-off-by: Ben Warren <ben@skyportsystems.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2017-03-02 07:14:26 +02:00
Gerd Hoffmann 72a810f411 xhci: add qemu xhci controller
Turn existing TYPE_XHCI into an abstract base class.
Create two child classes, TYPE_NEC_XHCI (same name as old xhci
controller) and TYPE_QEMU_XHCI (using an ID from our namespace).

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
Message-id: 1486382139-30630-3-git-send-email-kraxel@redhat.com
2017-02-21 08:11:43 +01:00
Gerd Hoffmann a4d79c3d10 docs: sync pci-ids.txt
Three commits allocated pci ids in include/hw/pci/pci.h
without also updating docs/specs/pci-ids.txt:

  bf439db pci: Allocate PCIe host bridge PCI ID
  40d14be hw/pci: introduce PCI Expander Bridge (PXB)
  02b0743 hw/pxb: introduce pxb-pcie expander for PCIe machines

This patch updates pci-ids.txt accordingly.

Cc: qemu-trivial@nongnu.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2017-01-24 23:26:53 +03:00
Laszlo Ersek a5b3ebfd23 fw-cfg: bump "x-file-slots" to 0x20 for 2.9+ machine types
More precisely, the "x-file-slots" count is bumped for all machine types
that:
(a) use fw_cfg, and
(b) are not versioned (hence migration is not expected to work for them
    across QEMU releases anyway), or have version 2.9.

This affects machine types implemented in the following source files:

- "hw/arm/virt.c". The "virt-*" machine type is versioned, and the <= 2.8
  versions already depend on HW_COMPAT_2_8 (see commit e353aac51b).
  Therefore adding the "x-file-slots" compat values to HW_COMPAT_2_8
  suffices.

- "hw/i386/pc.c". The "pc-i440fx-*" (including "pc-*") and "pc-q35-*"
  machine types are versioned. Modifying HW_COMPAT_2_8 is sufficient here
  too (see commit "pc: Add 2.9 machine-types"). The "isapc" machtype is
  not versioned. The "xenfv" machine type, which uses fw_cfg for direct
  kernel booting, is also not versioned.

- "hw/ppc/mac_newworld.c". The "mac99" machine type is not versioned.

- "hw/ppc/mac_oldworld.c". The "g3beige" machine type is not versioned.

- "hw/sparc/sun4m.c". None of the 9 machine types defined in this file
  appear versioned.

- "hw/sparc64/sun4u.c". None of the 3 machine types defined in this file
  appear versioned.

Cc: "Gabriel L. Somlo" <somlo@cmu.edu>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Alexander Graf <agraf@suse.de>
Cc: Anthony Perard <anthony.perard@citrix.com>
Cc: Artyom Tarasenko <atar4qemu@gmail.com>
Cc: David Gibson <david@gibson.dropbear.id.au>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Acked-by: Gabriel Somlo <somlo@cmu.edu>
Tested-by: Gabriel Somlo <somlo@cmu.edu>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
2017-01-18 22:59:53 +02:00
Laszlo Ersek e12f3a13e2 fw-cfg: turn FW_CFG_FILE_SLOTS into a device property
We'd like to raise the value of FW_CFG_FILE_SLOTS. Doing it naively could
lead to problems with backward migration: a more recent QEMU (running an
older machine type) would allow the guest, in fw_cfg_select(), to select a
high key value that is unavailable in the same machine type implemented by
the older (target) QEMU. On the target host, fw_cfg_data_read() for
example could dereference nonexistent entries.

As first step, size the FWCfgState.entries[*] and FWCfgState.entry_order
arrays dynamically. All three array sizes will be influenced by the new
field FWCfgState.file_slots (and matching device property).

Make the following changes:

- Replace the FW_CFG_FILE_SLOTS macro with FW_CFG_FILE_SLOTS_MIN (minimum
  count of fw_cfg file slots) in the header file. The value remains 0x10.

- Replace all uses of FW_CFG_FILE_SLOTS with a helper function called
  fw_cfg_file_slots(), returning the new property.

- Eliminate the macro FW_CFG_MAX_ENTRY, and replace all its uses with a
  helper function called fw_cfg_max_entry().

- In the MMIO- and IO-mapped realize functions both, allocate all three
  arrays dynamically, based on the new property.

- The new property defaults to FW_CFG_FILE_SLOTS_MIN. This is going to be
  customized in the following patches.

Cc: "Gabriel L. Somlo" <somlo@cmu.edu>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Acked-by: Gabriel Somlo <somlo@cmu.edu>
Tested-by: Gabriel Somlo <somlo@cmu.edu>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
2017-01-18 22:59:53 +02:00
Michael S. Tsirkin baf2d5bfba fw-cfg: support writeable blobs
Useful to send guest data back to QEMU.

Changes from Laszlo Ersek <lersek@redhat.com>:
- rebase the patch from Michael Tsirkin's original postings at [1] and [2]
  to the following patches:
  - loader: Allow a custom AddressSpace when loading ROMs
  - loader: Add AddressSpace loading support to uImages
  - loader: fix handling of custom address spaces when adding ROM blobs
- reject such writes immediately that would exceed the end of the array,
  rather than performing a partial write before setting the error bit: see
  the (len != dma.length) condition
- document the write interface

[1] http://lists.nongnu.org/archive/html/qemu-devel/2016-02/msg04968.html
[2] http://lists.nongnu.org/archive/html/qemu-devel/2016-03/msg02735.html

Cc: "Gabriel L. Somlo" <somlo@cmu.edu>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Michael Walle <michael@walle.cc>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Shannon Zhao <zhaoshenglong@huawei.com>
Cc: qemu-arm@nongnu.org
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
Acked-by: Gabriel Somlo <somlo@cmu.edu>
Tested-by: Gabriel Somlo <somlo@cmu.edu>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
2017-01-18 22:59:53 +02:00
Maxime Coquelin c5f048d8fb vhost-user: Add MTU protocol feature and op
This patch implements VHOST_USER_PROTOCOL_F_NET_MTU
protocol feature and VHOST_USER_NET_SET_MTU request so
that the backend gets notified of the user defined host
MTU.

If backend supports VHOST_USER_PROTOCOL_F_REPLY_ACK,
QEMU assumes MTU is valid if success is returned.

Vhost-net driver sends this request through a new
vhost_net_set_mtu vhost_ops entry.

Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Aaron Conole <aconole@redhat.com>
Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2017-01-10 07:02:53 +02:00
Wei Wang 5449c230fa spec/vhost-user: fix the VHOST_USER prefix
Signed-off-by: Wei Wang <wei.w.wang@intel.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-11-30 04:20:57 +02:00
Xiao Guangrong 45a994944a docs: improve the doc of Read FIT method
Improve the description and clearly document the length field

Suggested-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
2016-11-15 17:20:37 +02:00
Xiao Guangrong 75f2749822 pc: memhp: move nvdimm hotplug out of memory hotplug
as they use completely different way to handle hotplug event

Suggested-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
2016-11-15 17:20:37 +02:00
Xiao Guangrong b097cc52fc pc: memhp: enable nvdimm device hotplug
_GPE.E04 is dedicated for nvdimm device hotplug

Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-11-01 19:21:09 +02:00
Xiao Guangrong 806864d9a8 nvdimm acpi: introduce _FIT
_FIT is required for hotplug support, guest will inquire the updated
device info from it if a hotplug event is received

As FIT buffer is not completely mapped into guest address space, so a
new function, Read FIT whose UUID is UUID
648B9CF2-CDA1-4312-8AD9-49C4AF32BD62, handle 0x10000, function index
is 0x1, is reserved by QEMU to read the piece of FIT buffer. The buffer
is concatenated before _FIT return

Refer to docs/specs/acpi-nvdimm.txt for detailed design

Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-11-01 19:21:09 +02:00
Michael Roth 9f992cca93 spapr: update spapr hotplug documentation
This updates the existing documentation to reflect recent updates to
the hotplug event structure, which are in draft form but slated
for inclusion in PAPR/LoPAPR.

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2016-10-28 11:17:35 +11:00
Peter Xu eabb5782f7 hw/misc/edu: support MSI interrupt
So now edu device can support both line or msi interrupt, depending on
how user configures it.

Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <1475067819-21413-1-git-send-email-peterx@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-10-04 10:00:25 +02:00
Prerna Saxena ca525ce561 vhost-user: Introduce a new protocol feature REPLY_ACK.
This introduces the VHOST_USER_PROTOCOL_F_REPLY_ACK.

If negotiated, client applications should send a u64 payload in
response to any message that contains the "need_reply" bit set
on the message flags. Setting the payload to "zero" indicates the
command finished successfully. Likewise, setting it to "non-zero"
indicates an error.

Currently implemented only for SET_MEM_TABLE.

Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Prerna Saxena <prerna.saxena@nutanix.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-08-10 17:47:29 +03:00
Vladimir Sementsov-Ogievskiy 4e90ccc28e spec/parallels: fix a mistake
We have only one flag for now - Empty Image flag. The patch fixes unused
bits specification and marks bit 1 as usused.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2016-07-18 15:09:31 +01:00
Igor Mammedov abd49bc2ed docs: update ACPI CPU hotplug spec with new protocol
Add description of new CPU hotplug interface.

To switch from from legacy mode into new mode use fact
that write accesses into CPU present bitmap were never
used before and were ignored by QEMU.
So use it to as a way to switch from legacy mode.
That way pc/q35 machine starts in legacy mode and
QEMU generated ACPI tables will switch to new CPU
hotplug interface during runtime.
In case QEMU is started with legacy BIOS (that doesn't
support QEMU generated ACPI tables), legacy CPU hotplug
will remain active and could be used by BIOS built in
ACPI tables for CPU hotplug.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-06-24 05:20:22 +03:00
Xiao Guangrong 15b82b1dc5 docs: add NVDIMM ACPI documentation
It describes the basic concepts of NVDIMM ACPI and the interfaces
between QEMU and the ACPI BIOS

Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-06-24 05:13:57 +03:00
Stefan Weil cb8d4c8f54 Fix some typos found by codespell
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2016-05-18 15:04:27 +03:00