qemu/hw/block
Peter Maydell 15002921e8 Enable PV backends with Xen/KVM emulation
This is phase 2, following on from the basic platform support which was
 already merged.
 
  • Add a simple single-tenant internal XenStore implementation
  • Indirect Xen gnttab/evtchn/foreignmem/xenstore through operations table
  • Provide emulated back ends for Xen operations
  • Header cleanups to allow PV back ends to build without Xen itself
  • Enable PV back ends in emulated mode
  • Documentation update
 
 Tested-by: Paul Durrant <paul@xen.org>
 ... on real Xen (master branch, 4.18) with a Debian guest.
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Merge tag 'xenfv-2' of git://git.infradead.org/users/dwmw2/qemu into staging

Enable PV backends with Xen/KVM emulation

This is phase 2, following on from the basic platform support which was
already merged.

 • Add a simple single-tenant internal XenStore implementation
 • Indirect Xen gnttab/evtchn/foreignmem/xenstore through operations table
 • Provide emulated back ends for Xen operations
 • Header cleanups to allow PV back ends to build without Xen itself
 • Enable PV back ends in emulated mode
 • Documentation update

Tested-by: Paul Durrant <paul@xen.org>
... on real Xen (master branch, 4.18) with a Debian guest.

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# gpg: Signature made Tue 07 Mar 2023 22:32:28 GMT
# gpg:                using RSA key 314B08ACD0DE481133A5F2869BE980FD0AC01544
# gpg:                issuer "dwmw@amazon.co.uk"
# gpg: Good signature from "David Woodhouse <dwmw@amazon.co.uk>" [unknown]
# gpg:                 aka "David Woodhouse <dwmw@amazon.com>" [unknown]
# 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: 314B 08AC D0DE 4811 33A5  F286 9BE9 80FD 0AC0 1544

* tag 'xenfv-2' of git://git.infradead.org/users/dwmw2/qemu: (27 commits)
  docs: Update Xen-on-KVM documentation for PV disk support
  MAINTAINERS: Add entry for Xen on KVM emulation
  i386/xen: Initialize Xen backends from pc_basic_device_init() for emulation
  hw/xen: Implement soft reset for emulated gnttab
  hw/xen: Map guest XENSTORE_PFN grant in emulated Xenstore
  hw/xen: Add emulated implementation of XenStore operations
  hw/xen: Add emulated implementation of grant table operations
  hw/xen: Hook up emulated implementation for event channel operations
  hw/xen: Only advertise ring-page-order for xen-block if gnttab supports it
  hw/xen: Avoid crash when backend watch fires too early
  hw/xen: Build PV backend drivers for CONFIG_XEN_BUS
  hw/xen: Rename xen_common.h to xen_native.h
  hw/xen: Use XEN_PAGE_SIZE in PV backend drivers
  hw/xen: Move xenstore_store_pv_console_info to xen_console.c
  hw/xen: Add xenstore operations to allow redirection to internal emulation
  hw/xen: Add foreignmem operations to allow redirection to internal emulation
  hw/xen: Pass grant ref to gnttab unmap operation
  hw/xen: Add gnttab operations to allow redirection to internal emulation
  hw/xen: Add evtchn operations to allow redirection to internal emulation
  hw/xen: Create initial XenStore nodes
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-03-09 13:22:05 +00:00
..
dataplane hw/xen: Build PV backend drivers for CONFIG_XEN_BUS 2023-03-07 17:04:30 +00:00
block.c pflash: Fix blk_pread_nonzeroes() 2023-03-07 16:53:18 +01:00
cdrom.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
ecc.c vmstate: Constify some VMStateDescriptions 2021-05-02 17:24:50 +02:00
fdc-internal.h hw/block/fdc: Declare shared prototypes in fdc-internal.h 2021-06-25 08:53:28 -04:00
fdc-isa.c hw: Replace isa_get_irq() by isa_bus_get_irq() when ISABus is available 2023-02-27 22:29:02 +01:00
fdc-sysbus.c hw/block/fdc-sysbus: Always mark sysbus floppy controllers as not having DMA 2022-06-11 11:36:14 +02:00
fdc.c block: Change blk_{pread,pwrite}() param order 2022-07-12 12:14:56 +02:00
hd-geometry.c hw/block/hd-geometry: Do not override specified bios-chs-trans 2022-08-02 11:21:56 +02:00
Kconfig hw/block/fdc: Extract SysBus floppy controllers to fdc-sysbus.c 2021-06-25 08:53:28 -04:00
m25p80.c m25p80: Improve error when the backend file size does not match the device 2023-03-07 16:53:18 +01:00
m25p80_sfdp.c m25p80: Add the is25wp256 SFPD table 2023-02-07 09:02:04 +01:00
m25p80_sfdp.h m25p80: Add the is25wp256 SFPD table 2023-02-07 09:02:04 +01:00
meson.build hw/xen: Build PV backend drivers for CONFIG_XEN_BUS 2023-03-07 17:04:30 +00:00
nand.c block: Change blk_{pread,pwrite}() param order 2022-07-12 12:14:56 +02:00
onenand.c block: Change blk_{pread,pwrite}() param order 2022-07-12 12:14:56 +02:00
pflash_cfi01.c Drop duplicate #include 2023-02-08 07:28:05 +01:00
pflash_cfi02.c Revert "hw/block/pflash_cfi: Error out if dev length isn't power of 2" 2022-11-08 15:53:40 -05:00
swim.c qbus: Rename qbus_create_inplace() to qbus_init() 2021-09-30 13:42:10 +01:00
tc58128.c hw/sh4: Add missing license 2021-03-06 16:18:42 +01:00
trace-events m25p80: Add basic support for the SFDP command 2022-10-24 11:20:15 +02:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00
vhost-user-blk.c hw/virtio: generalise CHR_EVENT_CLOSED handling 2022-12-01 02:30:13 -05:00
virtio-blk-common.c virtio-blk: move config size params to virtio-blk-common 2022-10-07 09:41:51 -04:00
virtio-blk.c virtio-blk: add missing AioContext lock 2023-02-09 10:21:23 -05:00
xen-block.c hw/xen: Only advertise ring-page-order for xen-block if gnttab supports it 2023-03-07 17:04:30 +00:00
xen_blkif.h xen: Import other xen/io/*.h 2019-06-24 10:42:30 +01:00