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2020-01-24pvpanic: implement crashloaded event handlingzhenwei pi1-8/+8
Handle bit 1 write, then post event to monitor. Suggested by Paolo, declear a new event, using GUEST_PANICKED could cause upper layers to react by shutting down or rebooting the guest. In advance for extention, add GuestPanicInformation in event message. Signed-off-by: zhenwei pi <pizhenwei@bytedance.com> Message-Id: <20200114023102.612548-3-pizhenwei@bytedance.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-01-24pvpanic: introduce crashloaded for pvpaniczhenwei pi1-2/+6
Add bit 1 for pvpanic. This bit means that guest hits a panic, but guest wants to handle error by itself. Typical case: Linux guest runs kdump in panic. It will help us to separate the abnormal reboot from normal operation. Signed-off-by: zhenwei pi <pizhenwei@bytedance.com> Message-Id: <20200114023102.612548-2-pizhenwei@bytedance.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-11-06global: Squash 'the the'Dr. David Alan Gilbert3-3/+3
'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>
2019-10-05docs/specs: Add ACPI GED documentationShameer Kolothum2-0/+71
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>
2019-08-21docs/specs: initial spec summary for Ultravisor-related hcallsMichael Roth1-0/+76
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>
2019-07-02xics/spapr: Detect old KVM XICS on POWER9 hostsGreg Kurz1-2/+2
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>
2019-07-02docs: updates on the POWER9 XIVE interrupt controller documentationCédric Le Goater2-10/+111
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>
2019-06-17docs: Build and install specs manualPeter Maydell1-0/+16
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
2019-06-17docs/specs/index.rst: Fix minor syntax issuesPeter Maydell1-4/+5
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
2019-05-29docs: provide documentation on the POWER9 XIVE interrupt controllerCédric Le Goater3-0/+386
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>
2019-01-17acpi: add ACPI memory clear interfaceMarc-André Lureau1-0/+2
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>
2019-01-17acpi: build TPM Physical Presence interfaceStefan Berger1-0/+83
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>
2019-01-17acpi: expose TPM/PPI configuration parameters to firmware via fw_cfgStefan Berger1-0/+19
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>
2019-01-14hw/misc/ivshmem: Remove deprecated "ivshmem" legacy deviceThomas Huth1-2/+6
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 5400c02b90b ("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>
2018-11-05pci-testdev: add optional memory barGerd Hoffmann1-5/+10
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>
2018-10-30docs: tpm: Mention implemented TPM CRB interface emulation and specsStefan Berger1-0/+15
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>
2018-09-27display/stdvga: add edid support.Gerd Hoffmann1-1/+1
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
2018-07-13docs: Grammar and spelling fixesVille Skyttä3-3/+4
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>
2018-06-28Replace '-enable-kvm' with '-accel kvm' in docs and help textsThomas Huth1-4/+4
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>
2018-05-29Merge remote-tracking branch ↵Peter Maydell1-0/+106
'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>
2018-05-24docs: tpm: add VM save/restore example and troubleshooting guideStefan Berger1-0/+106
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>
2018-05-23allocate pci id for mdpyGerd Hoffmann1-0/+1
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>
2018-04-27spapr: Support ibm,dynamic-memory-v2 propertyBharata B Rao1-0/+19
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>
2018-03-01docs/vmcoreinfo: detail unsupported host format behaviourMarc-André Lureau1-0/+4
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>
2017-11-15specs: Extend TPM spec with TPM emulator descriptionStefan Berger1-0/+79
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>
2017-10-16Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into stagingPeter Maydell1-0/+49
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>
2017-10-15dump: update phys_base header field based on VMCOREINFO contentMarc-André Lureau1-0/+8
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>
2017-10-15hw/misc: add vmcoreinfo deviceMarc-André Lureau1-0/+41
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>
2017-10-13specs: Describe the TPM support in QEMUStefan Berger1-0/+123
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>
2017-07-31docs: fix broken paths to docs/specs/ivshmem-spec.txtPhilippe Mathieu-Daudé1-1/+1
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>
2017-06-15docs: create interop/ subdirectoryPaolo Bonzini4-1567/+0
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>
2017-06-02spec/vhost-user spec: Add IOMMU supportMaxime Coquelin1-0/+84
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>
2017-06-02vhost-user: add slave-req-fd supportMarc-André Lureau1-2/+30
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>
2017-03-02docs: VM Generation ID device descriptionBen Warren1-0/+245
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>
2017-02-21xhci: add qemu xhci controllerGerd Hoffmann1-0/+1
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
2017-01-24docs: sync pci-ids.txtGerd Hoffmann1-0/+3
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>
2017-01-18fw-cfg: bump "x-file-slots" to 0x20 for 2.9+ machine typesLaszlo Ersek1-2/+2
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 e353aac51b944). 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>
2017-01-18fw-cfg: turn FW_CFG_FILE_SLOTS into a device propertyLaszlo Ersek1-1/+1
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>
2017-01-18fw-cfg: support writeable blobsMichael S. Tsirkin1-7/+25
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>
2017-01-10vhost-user: Add MTU protocol feature and opMaxime Coquelin1-0/+16
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>
2016-11-30spec/vhost-user: fix the VHOST_USER prefixWei Wang1-10/+10
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>
2016-11-15docs: improve the doc of Read FIT methodXiao Guangrong1-49/+47
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>
2016-11-15pc: memhp: move nvdimm hotplug out of memory hotplugXiao Guangrong2-3/+5
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>
2016-11-01pc: memhp: enable nvdimm device hotplugXiao Guangrong1-0/+3
_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>
2016-11-01nvdimm acpi: introduce _FITXiao Guangrong1-3/+55
_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>
2016-10-28spapr: update spapr hotplug documentationMichael Roth1-9/+46
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>
2016-10-04hw/misc/edu: support MSI interruptPeter Xu1-1/+6
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>
2016-08-10vhost-user: Introduce a new protocol feature REPLY_ACK.Prerna Saxena1-0/+26
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>
2016-07-18spec/parallels: fix a mistakeVladimir Sementsov-Ogievskiy1-1/+1
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>
2016-06-24docs: update ACPI CPU hotplug spec with new protocolIgor Mammedov1-12/+82
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>
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