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qemu-cr16/include/hw
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David Woodhouse c412ba47b2 hw/xen: Add gnttab operations to allow redirection to internal emulation 
Move the existing code using libxengnttab to xen-operations.c and allow
the operations to be redirected so that we can add emulation of grant
table mapping for backend drivers.

In emulation, mapping more than one grant ref to be virtually contiguous
would be fairly difficult. The best way to do it might be to make the
ram_block mappings actually backed by a file (shmem or a deleted file,
perhaps) so that we can have multiple *shared* mappings of it. But that
would be fairly intrusive.

Making the backend drivers cope with page *lists* instead of expecting
the mapping to be contiguous is also non-trivial, since some structures
would actually *cross* page boundaries (e.g. the 32-bit blkif responses
which are 12 bytes).

So for now, we'll support only single-page mappings in emulation. Add a
XEN_GNTTAB_OP_FEATURE_MAP_MULTIPLE flag to indicate that the native Xen
implementation *does* support multi-page maps, and a helper function to
query it.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
2023-03-07 17:04:30 +00:00
..
acpi hw/isa/lpc_ich9: Connect PM stuff to LPC internally 2023-02-27 22:29:01 +01:00
adc hw/arm/npcm7xx: Declare QOM macros using OBJECT_DECLARE_SIMPLE_TYPE() 2023-01-12 17:15:09 +00:00
arm hw: arm: allwinner-h3: Fix and complete H3 i2c devices 2023-03-06 15:31:24 +00:00
audio
block include/hw/block: Include hw/block/block.h where needed 2023-01-20 07:25:06 +01:00
char hw/char/cmsdk-apb-uart: Open-code cmsdk_apb_uart_create() 2023-02-27 13:27:05 +00:00
core softmmu: Check watchpoints for read+write at once 2023-03-05 13:44:07 -08:00
cpu
cris include: Include headers where needed 2023-01-08 01:54:22 -05:00
cxl hw/cxl/mailbox: Use new UUID network order define for cel_uuid 2023-03-02 19:13:52 -05:00
display include: Include headers where needed 2023-01-08 01:54:22 -05:00
dma include: Include headers where needed 2023-01-08 01:54:22 -05:00
firmware hw/smbios: add core_count2 to smbios table type 4 2022-11-07 14:08:17 -05:00
gpio
hyperv
i2c hw: allwinner-i2c: Fix TWI_CNTR_INT_FLAG on SUN6i SoCs 2023-03-06 14:08:12 +00:00
i386 virtio,pc,pci: features, cleanups, fixes 2023-03-03 13:35:54 +00:00
ide hw/ide/pci: Add PCIIDEState::isa_irq[] 2023-02-27 22:29:02 +01:00
input hw/input: Clean up includes 2023-02-08 07:16:23 +01:00
intc hw/intc/i8259: Document i8259_init() 2023-02-27 22:29:01 +01:00
ipack
ipmi
isa hw/isa: Factor isa_bus_get_irq() out of isa_get_irq() 2023-02-27 22:29:02 +01:00
kvm
loongarch hw/loongarch/virt: add system_powerdown hmp command support 2023-03-03 09:37:30 +08:00
m68k
mem acpi/nvdimm: Define trace events for NVDIMM and substitute nvdimm_debug() 2022-07-26 10:37:46 -04:00
mips hw/mips/bootloader: Handle buffers as opaque arrays 2023-01-13 09:32:32 +01:00
misc Don't include headers already included by qemu/osdep.h 2023-02-08 07:28:05 +01:00
net hw/arm/npcm7xx: Declare QOM macros using OBJECT_DECLARE_SIMPLE_TYPE() 2023-01-12 17:15:09 +00:00
nubus
nvram Revert "x86: return modified setup_data only if read as memory, not as file" 2023-03-02 03:10:46 -05:00
openrisc hw/openrisc: Split re-usable boot time apis out to boot.c 2022-09-04 07:02:56 +01:00
pci virtio,pc,pci: features, cleanups, fixes 2023-03-03 13:35:54 +00:00
pci-bridge
pci-host ppc patch queue for 2023-03-03: 2023-03-04 14:01:34 +00:00
ppc pnv_phb4_pec: Simplify/align code to parent user-created PHBs 2023-03-03 16:50:17 -03:00
rdma
remote include/hw/pci: Split pci_device.h off pci.h 2023-01-08 01:54:22 -05:00
riscv hw/riscv/virt: Enable basic ACPI infrastructure 2023-03-06 11:35:04 -08:00
rtc hw/rtc: Rename rtc_[get|set]_memory -> mc146818rtc_[get|set]_cmos_data 2023-02-27 22:29:02 +01:00
rx
s390x s390x/pv: Add support for asynchronous teardown for reboot 2023-02-27 09:15:39 +01:00
scsi include/hw/scsi/scsi.h: Remove unused scsi_legacy_handle_cmdline() prototype 2022-10-22 23:21:16 +02:00
sd hw/arm/npcm7xx: Declare QOM macros using OBJECT_DECLARE_SIMPLE_TYPE() 2023-01-12 17:15:09 +00:00
sensor
sh4
southbridge hw: Move ich9.h to southbridge/ 2023-02-27 22:29:01 +01:00
sparc
ssi Do not include hw/hw.h if it is not necessary 2023-02-27 09:15:38 +01:00
timer hw: Replace isa_get_irq() by isa_bus_get_irq() when ISABus is available 2023-02-27 22:29:02 +01:00
tricore Do not include hw/hw.h if it is not necessary 2023-02-27 09:15:38 +01:00
usb include: Include headers where needed 2023-01-08 01:54:22 -05:00
vfio vfio/migration: Remove VFIO migration protocol v1 2023-02-16 12:13:46 -07:00
virtio vhost-user-gpio: Configure vhost_dev when connecting 2023-03-02 03:10:47 -05:00
watchdog hw/watchdog/wdt_aspeed: Log unimplemented registers as UNIMP level 2023-02-07 09:02:05 +01:00
xen hw/xen: Add gnttab operations to allow redirection to internal emulation 2023-03-07 17:04:30 +00:00
xtensa
boards.h virtio,pc,pci: features, cleanups, fixes 2023-01-09 10:07:12 +00:00
clock.h
elf_ops.h treewide: Remove the unnecessary space before semicolon 2022-10-24 13:41:10 +02:00
fw-path-provider.h
hotplug.h
hw.h
ide.h hw/ide: Declare ide_get_[geometry/bios_chs_trans] in 'hw/ide/internal.h' 2023-02-27 22:29:02 +01:00
irq.h
loader-fit.h
loader.h hw: arm: Support direct boot for Linux/arm64 EFI zboot images 2023-03-06 14:08:12 +00:00
nmi.h
or-irq.h hw: Replace qemu_or_irq typedef by OrIRQState 2023-02-27 13:27:05 +00:00
pcmcia.h
platform-bus.h
ptimer.h
qdev-clock.h
qdev-core.h hw/qdev: Constify DeviceState* argument of qdev_get_parent_bus() 2023-02-27 22:29:01 +01:00
qdev-dma.h
qdev-properties-system.h
qdev-properties.h
register.h
registerfields.h
resettable.h
stream.h
sysbus.h
usb.h hw/usb: fix tab indentation 2022-11-08 11:13:48 +01:00
vmstate-if.h