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a8cd64d488
qemu/include/hw
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David Hildenbrand a8cd64d488 virtio-balloon: Use temporary PBP only 
We still have multiple issues in the current code
- The PBP is not freed during unrealize()
- The PBP is not reset on device resets: After a reset, the PBP is stale.
- We are not indicating VIRTIO_BALLOON_F_MUST_TELL_HOST, therefore
  guests (esp. legacy guests) will reuse pages without deflating,
  turning the PBP stale. Adding that would require compat handling.

Instead, let's use the PBP only temporarily, when processing one bulk of
inflation requests. This will keep guest_page_size > 4k working (with
Linux guests). There is nothing to do for deflation requests anymore.
The pbp is only used for a limited amount of time.

Fixes: ed48c59875 ("virtio-balloon: Safely handle BALLOON_PAGE_SIZE < host page size")
Cc: qemu-stable@nongnu.org #v4.0.0
Suggested-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20190722134108.22151-7-david@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
2019-07-25 07:58:03 -04:00
..
acpi hw/acpi: extract acpi_add_rom_blob() 2019-06-16 16:16:52 -04:00
adc
arm hw/arm/fsl-imx6ul.c: Remove dead SMP-related code 2019-07-22 14:07:39 +01:00
audio Clean up header guards that don't match their file name 2019-05-13 08:58:55 +02:00
block Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
char Normalize position of header guard 2019-06-12 13:20:20 +02:00
core hw/core/split-irq: Device that splits IRQ lines 2018-03-02 11:03:45 +00:00
cpu Clean up includes 2019-05-13 08:58:55 +02:00
cris
display edid: add xmax + ymax properties 2019-06-13 09:34:38 +02:00
dma Normalize position of header guard 2019-06-12 13:20:20 +02:00
firmware machine: Refactor smp-related call chains to pass MachineState 2019-07-05 17:07:36 -03:00
gpio hw/gpio/nrf51_gpio: Add nRF51 GPIO peripheral 2019-01-07 15:23:47 +00:00
hyperv hyperv: process POST_MESSAGE hypercall 2018-10-19 13:44:14 +02:00
i2c hw/i2c/bitbang_i2c: Use in-place rather than malloc'd bitbang_i2c_interface struct 2019-07-03 10:51:35 +02:00
i386 i386: Make unversioned CPU models be aliases 2019-07-05 17:08:04 -03:00
ide hw/ide: drop iov field from IDEDMA 2019-02-22 09:42:13 +00:00
input hw/devices: Move TI touchscreen declarations into a new header 2019-04-29 17:57:21 +01:00
intc Clean up header guards that don't match their file name 2019-05-13 08:58:55 +02:00
ipack
ipmi Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
isa Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
kvm Supply missing header guards 2019-06-12 13:20:21 +02:00
lm32 Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
m68k Supply missing header guards 2019-06-12 13:20:21 +02:00
mem nvdimm: Rename AcpiNVDIMMState into NVDIMMState 2019-03-11 10:44:21 -03:00
mips Supply missing header guards 2019-06-12 13:20:21 +02:00
misc hw/misc/aspeed_xdma: New device 2019-07-01 17:29:00 +01:00
net Normalize position of header guard 2019-06-12 13:20:20 +02:00
nvram hw/nvram/fw_cfg: Add fw_cfg_arch_key_name() 2019-05-23 14:10:31 +02:00
pci pcie: consistent names for function args 2019-07-12 10:56:26 -04:00
pci-bridge Supply missing header guards 2019-06-12 13:20:21 +02:00
pci-host ppc patch queue 2019-06-12 2019-06-12 14:43:47 +01:00
ppc spapr/xive: simplify spapr_irq_init_device() to remove the emulated init 2019-07-02 09:43:58 +10:00
rdma {hmp, hw/pvrdma}: Expose device internals via monitor interface 2019-03-16 15:52:44 +02:00
riscv hw/riscv: Load OpenSBI as the default firmware 2019-07-18 14:18:45 -07:00
s390x vfio-ccw: support async command subregion 2019-06-24 17:27:57 +02:00
scsi scsi-disk: Use qdev_prop_drive_iothread 2019-06-04 15:22:22 +02:00
sd Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
semihosting semihosting: split console_out into string and char versions 2019-06-12 17:53:22 +01:00
sh4 Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
sparc Supply missing header guards 2019-06-12 13:20:21 +02:00
ssi aspeed/smc: add a 'sdram_base' property 2019-07-01 17:28:59 +01:00
timer pl031: Correctly migrate state when using -rtc clock=host 2019-07-15 14:17:04 +01:00
tricore
unicore32 hw/unicore32: restrict hw addr defines to source file 2017-12-18 17:07:02 +03:00
usb usb: Add basic code to emulate Chipidea USB IP 2018-02-09 10:40:30 +00:00
vfio vfio-common.h: Remove inaccurate comment 2019-07-02 13:12:53 -06:00
virtio virtio-balloon: Use temporary PBP only 2019-07-25 07:58:03 -04:00
watchdog aspeed: Link SCU to the watchdog 2019-07-01 17:29:00 +01:00
xen xen: Import other xen/io/*.h 2019-06-24 10:42:30 +01:00
xtensa Clean up ill-advised or unusual header guards 2019-05-13 08:58:55 +02:00
boards.h machine: Refactor smp_parse() in vl.c as MachineClass::smp_parse() 2019-07-05 17:08:04 -03:00
bt.h
elf_ops.h elf-ops.h: Add get_elf_note_type() 2019-02-05 16:50:16 +01:00
empty_slot.h
fw-path-provider.h Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
hotplug.h qom: make interface types abstract 2018-12-11 15:45:22 -02:00
hw.h Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
ide.h ide/via: Rename functions to match device name 2019-01-25 14:52:12 -05:00
irq.h hw/core/split-irq: Device that splits IRQ lines 2018-03-02 11:03:45 +00:00
loader-fit.h Use #include "..." for our own headers, <...> for others 2018-02-09 05:05:11 +01:00
loader.h elf: Add optional function ptr to load_elf() to parse ELF notes 2019-02-05 16:50:16 +01:00
nmi.h Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
or-irq.h hw/core/or-irq: Support more than 16 inputs to an OR gate 2018-06-15 15:23:34 +01:00
pcmcia.h hw/pcmcia: Remove PCMCIACardState from "qemu/typedefs.h" 2019-01-22 05:14:32 +01:00
platform-bus.h platform-bus-device: use device plug callback instead of machine_done notifier 2018-05-10 18:10:56 +01:00
ptimer.h Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
qdev-core.h qdev: add qdev_add_vm_change_state_handler() 2019-07-08 16:00:26 +02:00
qdev-dma.h Supply missing header guards 2019-06-12 13:20:21 +02:00
qdev-properties.h block: Add qdev_prop_drive_iothread property type 2019-06-04 15:22:22 +02:00
qdev.h
register.h hw: register: Run post_write hook on reset 2018-03-01 11:05:43 +00:00
registerfields.h Use #include "..." for our own headers, <...> for others 2018-02-09 05:05:11 +01:00
stream.h Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
sysbus.h sysbus: add a sysbus_mmio_unmap() helper 2019-05-29 11:39:46 +10:00
usb.h qemu/queue.h: simplify reverse access to QTAILQ 2019-01-11 15:46:55 +01:00