Commit Graph

1603 Commits

Author SHA1 Message Date
Philippe Mathieu-Daudé
0063454aff hw/pci-host/piix: Move RCR_IOPORT register definition
The RCR_IOPORT register belongs to the PIIX chipset.
Move the definition to "piix.h", and prepend the PIIX prefix.

Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2019-11-05 23:33:12 +01:00
Philippe Mathieu-Daudé
fff123b8fd piix4: Add a MC146818 RTC Controller as specified in datasheet
Remove mc146818rtc instanciated in malta board, to not have it twice.

Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Message-Id: <20171216090228.28505-13-hpoussin@reactos.org>
[PMD: rebased, set RTC base_year to 2000]
Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2019-11-05 23:33:12 +01:00
Paolo Bonzini
bf13bfab08 i386: implement IGNNE
Change the handling of port F0h writes and FPU exceptions to implement IGNNE.

The implementation mixes a bit what the chipset and processor do in real
hardware, but the effect is the same as what happens with actual FERR#
and IGNNE# pins: writing to port F0h asserts IGNNE# in addition to lowering
FP_IRQ; while clearing the SE bit in the FPU status word deasserts IGNNE#.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-10-26 15:38:07 +02:00
Paolo Bonzini
6f529b7534 target/i386: move FERR handling to target/i386
Move it out of pc.c since it is strictly tied to TCG.  This is
almost exclusively code movement, the next patch will implement
IGNNE.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-10-26 15:38:07 +02:00
Paolo Bonzini
673652a785 Merge commit 'df84f17' into HEAD
This merge fixes a semantic conflict with the trivial tree.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-10-26 15:38:02 +02:00
Philippe Mathieu-Daudé
bcdb90640a hw: Move MC146818 device from hw/timer/ to hw/rtc/ subdirectory
The MC146818 is a Real Time Clock, not a timer.
Move it under the hw/rtc/ subdirectory.

Use copyright statement from 80cabfad16 for "hw/rtc/mc146818rtc.h".

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20191003230404.19384-4-philmd@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-10-24 20:13:10 +02:00
Philippe Mathieu-Daudé
b4de58a4e1 hw/i386/pc: Remove kvm_i386.h include
By extracting pc_gsi_create() and pc_i8259_create() we removed
the access to "kvm_i386.h" from the machine code. We can now
remove it.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20191015162705.28087-25-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-10-24 14:24:54 +02:00
Philippe Mathieu-Daudé
4501d317b5 hw/i386/pc: Extract pc_i8259_create()
The i8259 creation code is common to all PC machines, extract the
common code.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20191018135910.24286-5-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-10-24 14:24:54 +02:00
Philippe Mathieu-Daudé
b00c6f18a6 hw/i386/pc: Move gsi_state creation code
The code block related to IRQ starts few lines later. Move
the comment and the pc_gsi_create() invocation where we start
to use the IRQs.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20191018135910.24286-4-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-10-24 14:24:54 +02:00
Philippe Mathieu-Daudé
417258f139 hw/i386/pc: Extract pc_gsi_create()
The GSI creation code is common to all PC machines, extract the
common code.

Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20191018135910.24286-2-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-10-24 14:24:34 +02:00
Sergio Lopez
0ebf007dda hw/i386: Introduce the microvm machine type
microvm is a machine type inspired by Firecracker and constructed
after its machine model.

It's a minimalist machine type without PCI nor ACPI support, designed
for short-lived guests. microvm also establishes a baseline for
benchmarking and optimizing both QEMU and guest operating systems,
since it is optimized for both boot time and footprint.

Signed-off-by: Sergio Lopez <slp@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2019-10-22 09:39:54 +02:00
Sergio Lopez
703a548aa9 hw/i386: make x86.c independent from PCMachineState
As a last step into splitting PCMachineState and deriving
X86MachineState from it, make the functions previously extracted from
pc.c to x86.c independent from PCMachineState, using X86MachineState
instead.

Signed-off-by: Sergio Lopez <slp@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2019-10-22 09:39:54 +02:00
Paolo Bonzini
f0bb276bf8 hw/i386: split PCMachineState deriving X86MachineState from it
Split up PCMachineState and PCMachineClass and derive X86MachineState
and X86MachineClass from them. This allows sharing code with non-PC
x86 machine types.

Signed-off-by: Sergio Lopez <slp@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2019-10-22 09:39:50 +02:00
Sergio Lopez
549e984e67 hw/i386/pc: move shared x86 functions to x86.c and export them
Move x86 functions that will be shared between PC and non-PC machine
types to x86.c, along with their helpers.

Signed-off-by: Sergio Lopez <slp@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2019-10-22 09:38:42 +02:00
Sergio Lopez
86a9a7916b hw/i386/pc: remove commented out code from x86_load_linux()
Follow checkpatch.pl recommendation and remove commented out code from
x86_load_linux().

Signed-off-by: Sergio Lopez <slp@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2019-10-22 09:38:42 +02:00
Sergio Lopez
350f5233d7 hw/i386/pc: avoid an assignment in if condition in x86_load_linux()
Follow checkpatch.pl recommendation and avoid an assignment in if
condition in x86_load_linux().

Signed-off-by: Sergio Lopez <slp@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2019-10-22 09:38:42 +02:00
Sergio Lopez
133ef074bd hw/i386/pc: replace use of strtol with qemu_strtoui in x86_load_linux()
Follow checkpatch.pl recommendation and replace the use of strtol with
qemu_strtoui in x86_load_linux().

Signed-off-by: Sergio Lopez <slp@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
2019-10-22 09:38:42 +02:00
Sergio Lopez
62a188546f hw/i386/pc: fix code style issues on functions that will be moved out
Fix code style issues detected by checkpatch.pl on functions that will
be moved out to x86.c.

Signed-off-by: Sergio Lopez <slp@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
2019-10-22 09:38:42 +02:00
Sergio Lopez
81ef68e44c hw/i386/pc: rename functions shared with non-PC machines
The following functions are named *pc* but are not PC-machine specific
but generic to the X86 architecture, rename them:

  load_linux                 -> x86_load_linux
  pc_new_cpu                 -> x86_new_cpu
  pc_cpus_init               -> x86_cpus_init
  pc_cpu_index_to_props      -> x86_cpu_index_to_props
  pc_get_default_cpu_node_id -> x86_get_default_cpu_node_id
  pc_possible_cpu_arch_ids   -> x86_possible_cpu_arch_ids
  old_pc_system_rom_init     -> x86_system_rom_init

Signed-off-by: Sergio Lopez <slp@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2019-10-22 09:38:42 +02:00
Peter Maydell
39b68bc4f1 virtio, vhost, acpi: features, fixes, tests
ARM ACPI memory hotplug support +
 tests for new arm/virt ACPI tables.
 
 Virtio fs support (no migration).
 A vhost-user reconnect bugfix.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

virtio, vhost, acpi: features, fixes, tests

ARM ACPI memory hotplug support +
tests for new arm/virt ACPI tables.

Virtio fs support (no migration).
A vhost-user reconnect bugfix.

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

# gpg: Signature made Tue 15 Oct 2019 22:02:19 BST
# gpg:                using RSA key 281F0DB8D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [full]
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>" [full]
# 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:
  virtio: add vhost-user-fs-pci device
  virtio: add vhost-user-fs base device
  virtio: Add virtio_fs linux headers
  tests/acpi: add expected tables for arm/virt
  tests: document how to update acpi tables
  tests: Add bios tests to arm/virt
  tests: allow empty expected files
  tests/acpi: add empty files
  tests: Update ACPI tables list for upcoming arm/virt tests
  docs/specs: Add ACPI GED documentation
  hw/arm: Use GED for system_powerdown event
  hw/arm: Factor out powerdown notifier from GPIO
  hw/arm/virt-acpi-build: Add PC-DIMM in SRAT
  hw/arm/virt: Enable device memory cold/hot plug with ACPI boot
  hw/arm/virt: Add memory hotplug framework
  hw/acpi: Add ACPI Generic Event Device Support
  hw/acpi: Do not create memory hotplug method when handler is not defined
  hw/acpi: Make ACPI IO address space configurable
  vhost-user: save features if the char dev is closed

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-10-17 15:30:44 +01:00
Shameer Kolothum
091c466e26 hw/acpi: Make ACPI IO address space configurable
This is in preparation for adding support for ARM64 platforms
where it doesn't use port mapped IO for ACPI IO space. We are
making changes so that MMIO region can be accommodated
and board can pass the base address into the aml build function.

Also move few MEMORY_* definitions to header so that other memory
hotplug event signalling mechanisms (eg. Generic Event Device on
HW-reduced acpi platforms) can use the same from their respective
event handler code.

Signed-off-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20190918130633.4872-2-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 17:12:08 -04:00
Eric Auger
549d400587 memory: allow memory_region_register_iommu_notifier() to fail
Currently, when a notifier is attempted to be registered and its
flags are not supported (especially the MAP one) by the IOMMU MR,
we generally abruptly exit in the IOMMU code. The failure could be
handled more nicely in the caller and especially in the VFIO code.

So let's allow memory_region_register_iommu_notifier() to fail as
well as notify_flag_changed() callback.

All sites implementing the callback are updated. This patch does
not yet remove the exit(1) in the amd_iommu code.

in SMMUv3 we turn the warning message into an error message saying
that the assigned device would not work properly.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-10-04 18:49:18 +02:00
Corey Minyard
ebe15582ca pc: Add an SMB0 ACPI device to q35
This is so I2C devices can be found in the ACPI namespace.  Currently
that's only IPMI, but devices can be easily added now.

Adding the devices required some PCI information, and the bus itself
to be added to the PCMachineState structure.

Note that this only works on Q35, the ACPI for PIIX4 is not capable
of handling an SMBus device.

Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
2019-09-20 14:09:24 -05:00
Corey Minyard
576d05b67f ipmi: Fix SSIF ACPI handling to use the right CRS
Pass in the CRS so that it can be set to the SMBus for IPMI later.

Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2019-09-20 14:08:10 -05:00
Corey Minyard
38033052f6 ipmi: Add an SMBus IPMI interface
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2019-09-20 14:08:10 -05:00
Corey Minyard
12f983c6aa ipmi: Add PCI IPMI interfaces
Pretty straightforward, just hook the current KCS and BT code into
the PCI system with the proper configuration.

Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: M: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2019-09-20 14:08:10 -05:00
Peter Maydell
f396411259 virtio,vhost,pc: features, fixes, cleanups.
Virtio 1.0 support for virtio-mmio.
 Misc fixes, cleanups.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

virtio,vhost,pc: features, fixes, cleanups.

Virtio 1.0 support for virtio-mmio.
Misc fixes, cleanups.

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

# gpg: Signature made Mon 16 Sep 2019 16:17:30 BST
# gpg:                using RSA key 281F0DB8D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [full]
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>" [full]
# 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:
  virtio-mmio: implement modern (v2) personality (virtio-1)
  virtio pmem: user document
  intel_iommu: Remove the caching-mode check during flag change
  pc/q35: Disallow vfio-pci hotplug without VT-d caching mode
  qdev/machine: Introduce hotplug_allowed hook
  intel_iommu: Sanity check vfio-pci config on machine init done
  backends/vhost-user.c: prevent using uninitialized vqs
  vhost-user-blk: prevent using uninitialized vqs
  docs/nvdimm: add example on persistent backend setup
  MAINTAINERS: update virtio-rng and virtio-serial maintainer

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-09-17 16:24:08 +01:00
Philippe Mathieu-Daudé
149c50cabc hw/i386/pc: Extract the x86 generic fw_cfg code
Extract all the functions that are not PC-machine specific into
the (arch-specific) fw_cfg.c file. This will allow other X86-machine
to reuse these functions.

Suggested-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190818225414.22590-16-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-09-16 17:13:09 +02:00
Philippe Mathieu-Daudé
367607f913 hw/i386/pc: Rename pc_build_feature_control() as generic fw_cfg_build_*
Now that the pc_build_feature_control_file() function has been
refactored to not depend of PC specific types, rename it to a
more generic name.

Suggested-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190818225414.22590-15-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-09-16 17:13:09 +02:00
Philippe Mathieu-Daudé
4e91c7f32e hw/i386/pc: Let pc_build_feature_control() take a MachineState argument
Let the pc_build_feature_control_file() function take a generic MachineState
argument.

Suggested-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190818225414.22590-14-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-09-16 17:13:09 +02:00
Philippe Mathieu-Daudé
eb6449fbd8 hw/i386/pc: Let pc_build_feature_control() take a FWCfgState argument
Pass the FWCfgState object by argument, this will
allow us to remove the PCMachineState argument later.

Suggested-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190818225414.22590-13-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-09-16 17:13:09 +02:00
Philippe Mathieu-Daudé
e0e949d7d8 hw/i386/pc: Rename pc_build_smbios() as generic fw_cfg_build_smbios()
Now that the pc_build_smbios() function has been refactored to not
depend of PC specific types, rename it to a more generic name.

Suggested-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190818225414.22590-12-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-09-16 17:13:08 +02:00
Philippe Mathieu-Daudé
f16f6f05a0 hw/i386/pc: Let pc_build_smbios() take a generic MachineState argument
Let the pc_build_smbios() function take a generic MachineState
argument.

Suggested-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190818225414.22590-11-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-09-16 17:13:08 +02:00
Philippe Mathieu-Daudé
14fe280757 hw/i386/pc: Let pc_build_smbios() take a FWCfgState argument
Pass the FWCfgState object by argument, this will
allow us to remove the PCMachineState argument later.

Suggested-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190818225414.22590-10-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-09-16 17:13:08 +02:00
Paolo Bonzini
bd802bd981 hw/i386/pc: Replace PCMachineState argument with MachineState in fw_cfg_arch_create
In the previous commit we removed the last access to PCMachineState.
Replace it with a generic MachineState argument and use it to retrieve
the CPUArchIdList.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-09-16 17:13:08 +02:00
Philippe Mathieu-Daudé
264b485776 hw/i386/pc: Pass the CPUArchIdList array by argument
Pass the CPUArchIdList array by argument, this will
allow us to remove the PCMachineState argument later.

Suggested-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190818225414.22590-8-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-09-16 17:13:08 +02:00
Philippe Mathieu-Daudé
57e23e7837 hw/i386/pc: Pass the apic_id_limit value by argument
Pass the apic_id_limit value by argument, this will
allow us to remove the PCMachineState argument later.

Suggested-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190818225414.22590-7-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-09-16 17:13:08 +02:00
Philippe Mathieu-Daudé
524acbe97d hw/i386/pc: Pass the boot_cpus value by argument
The boot_cpus is used once. Pass it by argument, this will
allow us to remove the PCMachineState argument later.

Suggested-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190818225414.22590-6-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-09-16 17:13:07 +02:00
Philippe Mathieu-Daudé
5888e01cfd hw/i386/pc: Rename bochs_bios_init as more generic fw_cfg_arch_create
The bochs_bios_init() function is not restricted to the Bochs
BIOS and is useful to other BIOS.
Since it is not specific to the PC machine, and can be reused
by other machines of the X86 architecture, rename it as
fw_cfg_arch_create().

Suggested-by: Samuel Ortiz <sameo@linux.intel.com>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190818225414.22590-5-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-09-16 17:13:07 +02:00
Philippe Mathieu-Daudé
0f432b3064 hw/i386/pc: Use address_space_memory in place
The address_space_memory variable is used once.
Use it in place and remove the argument.

Suggested-by: Samuel Ortiz <sameo@linux.intel.com>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190818225414.22590-4-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-09-16 17:13:07 +02:00
Philippe Mathieu-Daudé
d6d059ca07 hw/i386/pc: Extract e820 memory layout code
Suggested-by: Samuel Ortiz <sameo@linux.intel.com>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190818225414.22590-3-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-09-16 17:13:07 +02:00
Philippe Mathieu-Daudé
42d400acfc hw/i386/pc: Use e820_get_num_entries() to access e820_entries
To be able to extract the e820* code out of this file (in the next
patch), access e820_entries with its correct helper.

Reviewed-by: Li Qiang <liq3ea@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190818225414.22590-2-philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-09-16 17:13:07 +02:00
Peter Xu
e7df189e19 intel_iommu: Remove the caching-mode check during flag change
That's never a good place to stop QEMU process... Since now we have
both the machine done sanity check and also the hotplug handler, we
can safely remove this to avoid that.

Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20190916080718.3299-5-peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2019-09-16 06:57:24 -04:00
Peter Xu
c6cbc29d36 pc/q35: Disallow vfio-pci hotplug without VT-d caching mode
Instead of bailing out when trying to hotplug a vfio-pci device with
below configuration:

  -device intel-iommu,caching-mode=off

With this we can return a warning message to the user via QMP/HMP and
the VM will continue to work after failing the hotplug:

  (qemu) device_add vfio-pci,bus=root.3,host=05:00.0,id=vfio1
  Error: Device assignment is not allowed without enabling caching-mode=on for Intel IOMMU.

Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20190916080718.3299-4-peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2019-09-16 06:57:24 -04:00
Peter Xu
28cf553afe intel_iommu: Sanity check vfio-pci config on machine init done
This check was previously only happened when the IOMMU is enabled in
the guest.  It was always too late because the enabling of IOMMU
normally only happens during the boot of guest OS.  It means that we
can bail out and exit directly during the guest OS boots if the
configuration of devices are not supported.  Or, if the guest didn't
enable vIOMMU at all, then the user can use the guest normally but as
long as it reconfigure the guest OS to enable the vIOMMU then reboot,
the user will see the panic right after the reset when the next boot
starts.

Let's make this failure even earlier so that we force the user to use
caching-mode for vfio-pci devices when with the vIOMMU.  So the user
won't get surprise at least during execution of the guest, which seems
a bit nicer.

This will affect some user who didn't enable vIOMMU in the guest OS
but was using vfio-pci and the vtd device in the past.  However I hope
it's not a majority because not enabling vIOMMU with the device
attached is actually meaningless.

We still keep the old assertion for safety so far because the hotplug
path could still reach it, so far.

Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20190916080718.3299-2-peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2019-09-16 06:57:24 -04:00
Cole Robinson
709ebb9054 hw/i386: Move CONFIG_ACPI_PCI to CONFIG_PC
CONFIG_ACPI_PCI is a hard requirement of acpi-build.c, which is built
unconditionally for x86 target. Putting it in default-configs/ suggests
that it can be easily disabled, which isn't true.

Relocate the symbol with the other acpi-build.c requirements, under
'config PC'. This is similar to what is done for the arm 'virt' machine
type and CONFIG_ACPI_PCI

Signed-off-by: Cole Robinson <crobinso@redhat.com>
Message-Id: <e73e6edff68fd30d69c6a1d02c9ef9192f773c63.1568049871.git.crobinso@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-09-16 12:32:21 +02:00
Maxiwell S. Garcia
4173324946 migration: Do not re-read the clock on pre_save in case of paused guest
The clock move makes the guest knows about the paused time between the
'stop' and 'migrate' commands. This is an issue in an already-paused
VM because some side effects, like process stalls, could happen
after migration.

So, this patch checks the runstate of guest in the pre_save handler and
do not re-reads the clock in case of paused state (cold migration).

Signed-off-by: Maxiwell S. Garcia <maxiwell@linux.ibm.com>
Message-Id: <20190829210711.6570-1-maxiwell@linux.ibm.com>
Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2019-09-03 14:39:46 -03:00
Igor Mammedov
c6c1bb89fb x86: do not advertise die-id in query-hotpluggbale-cpus if '-smp dies' is not set
Commit 176d2cda0 (i386/cpu: Consolidate die-id validity in smp context) added
new 'die-id' topology property to CPUs and exposed it via QMP command
query-hotpluggable-cpus, which broke -device/device_add cpu-foo for existing
users that do not support die-id/dies yet. That's would be fine if it happened
to new machine type only but it also happened to old machine types,
which breaks migration from old QEMU to the new one, for example following CLI:

  OLD-QEMU -M pc-i440fx-4.0 -smp 1,max_cpus=2 \
           -device qemu64-x86_64-cpu,socket-id=1,core-id=0,thread-id
is not able to start with new QEMU, complaining about invalid die-id.

After discovering regression, the patch
   "pc: Don't make die-id mandatory unless necessary"
makes die-id optional so old CLI would work.

However it's not enough as new QEMU still exposes die-id via query-hotpluggbale-cpus
QMP command, so the users that started old machine type on new QEMU, using all
properties (including die-id) received from QMP command (as required), won't be
able to start old QEMU using the same properties since it doesn't support die-id.

Fix it by hiding die-id in query-hotpluggbale-cpus for all machine types in case
'-smp dies' is not provided on CLI or -smp dies = 1', in which case smp_dies == 1
and APIC ID is calculated in default way (as it was before DIE support) so we won't
need compat code as in both cases the topology provided to guest via CPUID is the same.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20190902120222.6179-1-imammedo@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2019-09-03 14:39:46 -03:00
Jan Kiszka
f685f45157 i386/vmmouse: Properly reset state
nb_queue was not zeroed so that we no longer delivered events if a
previous guest left the device in an overflow state.

The state of absolute does not matter as the next vmmouse_update_handler
call will align it again.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Message-Id: <f056c7e5-fa74-469c-87f8-0f0925301b2d@web.de>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2019-09-03 14:39:46 -03:00
Eduardo Habkost
fea374e7c8 pc: Don't make die-id mandatory unless necessary
We have this issue reported when using libvirt to hotplug CPUs:
https://bugzilla.redhat.com/show_bug.cgi?id=1741451

Basically, libvirt is not copying die-id from
query-hotpluggable-cpus, but die-id is now mandatory.

We could blame libvirt and say it is not following the documented
interface, because we have this buried in the QAPI schema
documentation:

> Note: currently there are 5 properties that could be present
> but management should be prepared to pass through other
> properties with device_add command to allow for future
> interface extension. This also requires the filed names to be kept in
> sync with the properties passed to -device/device_add.

But I don't think this would be reasonable from us.  We can just
make QEMU more flexible and let die-id to be omitted when there's
no ambiguity.  This will allow us to keep compatibility with
existing libvirt versions.

Test case included to ensure we don't break this again.

Fixes: commit 176d2cda0d ("i386/cpu: Consolidate die-id validity in smp context")
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20190816170750.23910-1-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2019-09-03 14:39:46 -03:00