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2044969f0b
qemu/hw
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David Hildenbrand 2044969f0b virtio-mem: Implement RamDiscardManager interface 
Let's properly notify when (un)plugging blocks, after discarding memory
and before allowing the guest to consume memory. Handle errors from
notifiers gracefully (e.g., no remaining VFIO mappings) when plugging,
rolling back the change and telling the guest that the VM is busy.

One special case to take care of is replaying all notifications after
restoring the vmstate. The device starts out with all memory discarded,
so after loading the vmstate, we have to notify about all plugged
blocks.

Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Alex Williamson <alex.williamson@redhat.com>
Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Pankaj Gupta <pankaj.gupta.linux@gmail.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Auger Eric <eric.auger@redhat.com>
Cc: Wei Yang <richard.weiyang@linux.alibaba.com>
Cc: teawater <teawaterz@linux.alibaba.com>
Cc: Marek Kedzierski <mkedzier@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210413095531.25603-6-david@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2021-07-08 15:54:45 -04:00
..
9pfs 9pfs: reduce latency of Twalk 2021-07-05 13:03:16 +02:00
acpi hw/acpi: Provide function acpi_ghes_present() 2021-06-21 16:49:37 +01:00
adc docs: fix references to docs/devel/tracing.rst 2021-06-02 06:51:09 +02:00
alpha hw/alpha: Provide a PCI-ISA bridge device node 2021-06-28 07:27:32 -07:00
arm hw/arm: Add basic power management to raspi. 2021-07-02 11:48:36 +01:00
audio hw/audio/sb16: Restrict I/O sampling rate range for command 41h/42h 2021-06-24 11:42:54 +02:00
avr hw/avr/atmega.c: use the avr51 cpu for atmega1280 2021-05-13 19:11:42 +02:00
block vhost-user-blk: Implement reconnection during realize 2021-06-30 13:21:22 +02:00
char hw/char/ibex_uart: Make the register layout private 2021-06-24 05:00:12 -07:00
core machine: add smp compound property 2021-07-06 08:33:51 +02:00
cpu cpu/core: Fix "help" of CPU core device types 2021-04-09 16:05:16 -04:00
cris Do not include exec/address-spaces.h if it's not really necessary 2021-05-02 17:24:51 +02:00
display configure, meson: convert virgl detection to meson 2021-07-06 08:33:51 +02:00
dma docs: fix references to docs/devel/tracing.rst 2021-06-02 06:51:09 +02:00
gpio hw/gpio/gpio_pwr: use shutdown function for reboot 2021-07-02 11:48:36 +01:00
hppa docs: fix references to docs/devel/tracing.rst 2021-06-02 06:51:09 +02:00
hyperv vmbus: Don't make QOM property registration conditional 2021-07-06 18:04:38 -04:00
i2c docs: fix references to docs/devel/tracing.rst 2021-06-02 06:51:09 +02:00
i386 * Some Meson test conversions 2021-06-28 21:04:22 +01:00
ide docs: fix references to docs/devel/tracing.rst 2021-06-02 06:51:09 +02:00
input vhost: Distinguish errors in vhost_dev_get_config() 2021-06-30 13:18:42 +02:00
intc hw/intc/armv7m_nvic: Remove stale comment 2021-06-15 16:18:48 +01:00
ipack Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
ipmi hw: Do not include qemu/log.h if it is not necessary 2021-05-02 17:24:50 +02:00
isa hw/block/fdc: Extract ISA floppy controllers to fdc-isa.c 2021-06-25 08:53:28 -04:00
m68k hw/m68k/q800: fix PROM checksum and MAC address storage 2021-07-02 17:35:08 +02:00
mem docs: fix references to docs/devel/tracing.rst 2021-06-02 06:51:09 +02:00
microblaze Do not include sysemu/sysemu.h if it's not really necessary 2021-05-02 17:24:50 +02:00
mips hw/mips/jazz: Map the UART devices unconditionally 2021-07-02 17:35:08 +02:00
misc hw/arm: Add basic power management to raspi. 2021-07-02 11:48:36 +01:00
net MIPS patches queue 2021-07-04 14:04:12 +01:00
nios2 Do not include cpu.h if it's not really necessary 2021-05-02 17:24:51 +02:00
nubus hw: Do not include hw/sysbus.h if it is not necessary 2021-05-02 17:24:50 +02:00
nvme hw/nvme: fix pin-based interrupt behavior (again) 2021-06-29 07:18:10 +02:00
nvram docs: fix references to docs/devel/tracing.rst 2021-06-02 06:51:09 +02:00
openrisc Do not include exec/address-spaces.h if it's not really necessary 2021-05-02 17:24:51 +02:00
pci docs: fix references to docs/devel/tracing.rst 2021-06-02 06:51:09 +02:00
pci-bridge Kconfig: Compile PXB for ARM_VIRT 2021-01-17 06:42:54 -05:00
pci-host hw/pci-host/bonito: Allow PCI config accesses smaller than 32-bit 2021-07-02 17:34:55 +02:00
pcmcia hw/pcmcia: Do not register PCMCIA type if not required 2021-05-02 17:24:50 +02:00
ppc ppc/pef.c: initialize cgs->ready in kvmppc_svm_init() 2021-06-03 18:10:31 +10:00
rdma pvrdma: Fix the ring init error flow (CVE-2021-3608) 2021-07-04 22:47:51 +03:00
remote multi-process: Initialize variables declared with g_auto* 2021-05-21 15:43:57 +01:00
riscv hw/riscv: OpenTitan: Connect the mtime and mtimecmp timer 2021-06-24 05:00:13 -07:00
rtc docs: fix references to docs/devel/tracing.rst 2021-06-02 06:51:09 +02:00
rx hw/rx/rx-gdbsim: Do not accept invalid memory size 2021-05-03 10:07:41 +02:00
s390x s390x/css: Add passthrough IRB 2021-06-21 08:48:21 +02:00
scsi vhost: Add Error parameter to vhost_dev_init() 2021-06-30 13:15:44 +02:00
sd docs: fix references to docs/devel/tracing.rst 2021-06-02 06:51:09 +02:00
sh4 Do not include exec/address-spaces.h if it's not really necessary 2021-05-02 17:24:51 +02:00
smbios hw/smbios: support for type 41 (onboard devices extended information) 2021-05-14 10:26:18 -04:00
sparc hw/block/fdc: Extract SysBus floppy controllers to fdc-sysbus.c 2021-06-25 08:53:28 -04:00
sparc64 hw/block/fdc: Extract ISA floppy controllers to fdc-isa.c 2021-06-25 08:53:28 -04:00
ssi Trivial patches pull request 20210503 2021-05-05 13:52:00 +01:00
timer hw/timer: Initial commit of Ibex Timer 2021-06-24 05:00:12 -07:00
tpm docs: fix references to docs/specs/tpm.rst 2021-06-02 06:51:09 +02:00
tricore hw/tricore: Add testdevice for tests in tests/tcg/ 2021-05-18 09:36:21 +01:00
usb configure, meson: convert libusbredir detection to meson 2021-06-25 10:54:12 +02:00
vfio s390x/css: Add passthrough IRB 2021-06-21 08:48:21 +02:00
virtio virtio-mem: Implement RamDiscardManager interface 2021-07-08 15:54:45 -04:00
watchdog docs: fix references to docs/devel/tracing.rst 2021-06-02 06:51:09 +02:00
xen docs: fix references to docs/devel/tracing.rst 2021-06-02 06:51:09 +02:00
xenpv meson: convert hw/arch* 2020-08-21 06:30:33 -04:00
xtensa Do not include exec/address-spaces.h if it's not really necessary 2021-05-02 17:24:51 +02:00
Kconfig hw/nvme: move nvme emulation out of hw/block 2021-05-17 09:19:00 +02:00
meson.build hw/nvme: move nvme emulation out of hw/block 2021-05-17 09:19:00 +02:00