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c8389550de
qemu/include/hw
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Marc-André Lureau c8389550de vmgenid: replace x-write-pointer-available hack 
This compat property sole function is to prevent the device from being
instantiated. Instead of requiring an extra compat property, check if
fw_cfg has DMA enabled.

fw_cfg is a built-in device that is initialized very early by the
machine init code.  We have at least one other device that also
assumes fw_cfg_find() can be safely used on realize: pvpanic.

This has the additional benefit of handling other cases properly, like:

  $ qemu-system-x86_64 -device vmgenid -machine none
  qemu-system-x86_64: -device vmgenid: vmgenid requires DMA write support in fw_cfg, which this machine type does not provide
  $ qemu-system-x86_64 -device vmgenid -machine pc-i440fx-2.9 -global fw_cfg.dma_enabled=off
  qemu-system-x86_64: -device vmgenid: vmgenid requires DMA write support in fw_cfg, which this machine type does not provide
  $ qemu-system-x86_64 -device vmgenid -machine pc-i440fx-2.6 -global fw_cfg.dma_enabled=on
  [boots normally]

Suggested-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Ben Warren <ben@skyportsystems.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2017-09-08 16:15:17 +03:00
..
acpi vmgenid: replace x-write-pointer-available hack 2017-09-08 16:15:17 +03:00
adc STM32F2xx: Add the ADC device 2016-10-04 13:28:07 +01:00
arm armv7m_nvic.h: Move from include/hw/arm to include/hw/intc 2017-09-04 15:21:53 +01:00
audio audio: Rename hw/audio/audio.h to hw/audio/soundhw.h 2017-05-19 10:48:54 +02:00
block hw/block: Introduce share-rw qdev property 2017-02-28 20:40:36 +01:00
char hw/char/cmsdk-apb-uart.c: Implement CMSDK APB UART 2017-07-17 13:36:08 +01:00
core generic-loader: Add a generic loader 2016-10-04 13:28:09 +01:00
cpu qapi: keep names in 'CpuInstanceProperties' in sync with struct CPUCore 2016-06-27 13:15:06 +10:00
cris char: rename CharDriverState Chardev 2017-01-27 18:07:59 +01:00
display Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
dma include: Fix typos found by codespell 2017-01-24 23:26:52 +03:00
gpio bcm2835_gpio: add bcm2835 gpio controller 2017-02-28 17:10:00 +00:00
i2c i2c: Allow I2C devices to NAK start events 2017-01-09 11:40:20 +00:00
i386 pc: add 2.11 machine types 2017-09-08 16:15:17 +03:00
ide ahci: split public and private interface 2017-07-18 11:47:57 -04:00
input ps2: add and use PS2State typedef 2017-06-23 11:51:50 +02:00
intc nvic: Add NS alias SCS region 2017-09-07 13:54:53 +01:00
ipack ipack: Update e-mail address 2016-05-18 15:04:27 +03:00
ipmi ipmi: introduce an ipmi_bmc_gen_event() API 2017-04-26 12:41:55 +10:00
isa isa: use get_uint() for "io-base" 2017-06-20 14:31:32 +02:00
kvm
lm32 intc: make HMP 'info irq' and 'info pic' commands use InterruptStatsProvider interface 2016-10-04 10:00:25 +02:00
m68k hw/char/mcf_uart: QOMify the ColdFire UART 2017-02-16 14:06:56 +01:00
mem hw/ppc/spapr: Fix segfault when instantiating a 'pc-dimm' without 'memdev' 2017-08-22 21:26:46 +10:00
mips mips: Add KVM T&E segment support for TCG 2017-08-02 22:18:06 +01:00
misc hw/misc/mps2_scc: Implement MPS2 Serial Communication Controller 2017-07-17 13:36:08 +01:00
net net/ftgmac100: add a 'aspeed' property 2017-04-25 19:17:25 +08:00
nvram fw_cfg: move QOM type defines and fw_cfg types into fw_cfg.h 2017-07-17 15:41:30 -03:00
pci hw/pci: add QEMU-specific PCI capability to the Generic PCI Express Root Port 2017-09-08 16:15:17 +03:00
pci-host q35/mch: implement extended TSEG sizes 2017-06-16 18:07:08 +03:00
ppc pseries: Use smaller default hash page tables when guest can resize 2017-07-17 15:07:05 +10:00
s390x s390x/kvm: move KVM declarations and stubs to separate files 2017-08-30 18:23:26 +02:00
scsi hw: Deprecate -drive if=scsi with non-onboard HBAs 2017-02-21 13:17:45 +01:00
sd hw/sd: add card-reparenting function 2017-02-28 17:10:00 +00:00
sh4 char: rename CharDriverState Chardev 2017-01-27 18:07:59 +01:00
smbios smbios: filter based on CONFIG_SMBIOS rather than TARGET 2017-01-16 17:52:34 +01:00
sparc char: rename CharDriverState Chardev 2017-01-27 18:07:59 +01:00
ssi aspeed/smc: handle SPI flash Command mode 2017-01-20 11:15:08 +00:00
timer hw/char/cmsdk-apb-timer: Implement CMSDK APB timer device 2017-07-17 13:36:08 +01:00
tricore Clean up header guards that don't match their file name 2016-07-12 16:19:16 +02:00
unicore32 Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
usb Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
vfio memory/iommu: QOM'fy IOMMU MemoryRegion 2017-07-14 12:04:41 +02:00
virtio virtio-net: enable configurable tx queue size 2017-07-03 22:29:48 +03:00
watchdog watchdog: wdt_aspeed: Add support for the reset width register 2017-09-04 15:21:54 +01:00
xen xen: don't use xenstore to save/restore physmap anymore 2017-07-18 14:16:52 -07:00
boards.h boards.h: Define new flag ignore_memory_transaction_failures 2017-09-07 13:54:54 +01:00
bt.h char: rename CharDriverState Chardev 2017-01-27 18:07:59 +01:00
compat.h vmgenid: replace x-write-pointer-available hack 2017-09-08 16:15:17 +03:00
devices.h sm501: QOMify 2017-04-24 12:32:12 +01:00
elf_ops.h loader: Ignore zero-sized ELF segments 2017-09-04 15:21:53 +01:00
empty_slot.h Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
fw-path-provider.h Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
hotplug.h qdev: hotplug: drop HotplugHandler.post_plug callback 2016-11-15 17:20:37 +02:00
hw.h migration: Split qemu-file.h 2017-06-01 18:49:22 +02:00
ide.h xen-platform: add missing disk unplug option 2017-01-27 15:23:29 -08:00
irq.h irq: Remove qemu_irq_intercept_out 2014-10-23 16:41:25 +02:00
loader-fit.h loader: Support Flattened Image Trees (FIT images) 2017-02-21 23:47:40 +00:00
loader.h elf-loader: Allow late loading of elf 2017-02-28 12:04:48 +01:00
nmi.h Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
or-irq.h irq: Add a new irq device that allows the ORing of lines 2016-10-04 13:28:07 +01:00
pcmcia.h Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
platform-bus.h Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
ptimer.h include/hw/ptimer.h: Add documentation comments 2017-07-11 17:44:27 +03:00
qdev-core.h qapi: Change data type of the FOO_lookup generated for enum FOO 2017-09-04 13:09:13 +02:00
qdev-dma.h qdev: Remove hex8/32/64 property types 2014-02-14 21:12:04 +01:00
qdev-properties.h qdev: provide DEFINE_PROP_INT64() 2017-07-18 17:36:19 +02:00
qdev.h
register.h hw/registerfields.h: Pull FIELD etc macros out of hw/register.h 2017-01-27 15:20:21 +00:00
registerfields.h hw/registerfields.h: Pull FIELD etc macros out of hw/register.h 2017-01-27 15:20:21 +00:00
stream.h Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
sysbus.h sysbus: Remove ignored return value of FindSysbusDeviceFunc 2016-09-27 17:03:34 -03:00
usb.h usb: replace handle_destroy with unrealize 2017-02-23 15:40:19 +01:00