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qemu-patch-raspberry4/hw
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Greg Kurz ad334d89a6 spapr: Handle pending hot plug/unplug requests at CAS 
If a hot plug or unplug request is pending at CAS, we currently trigger
a CAS reboot, which severely increases the guest boot time. This is
because SLOF doesn't handle hot plug events and we had no way to fix
the FDT that gets presented to the guest.

We can do better thanks to recent changes in QEMU and SLOF:

- we now return a full FDT to SLOF during CAS

- SLOF was fixed to correctly detect any device that was either added or
  removed since boot time and to update its internal DT accordingly.

The right solution is to process all pending hot plug/unplug requests
during CAS: convert hot plugged devices to cold plugged devices and
remove the hot unplugged ones, which is exactly what spapr_drc_reset()
does. Also clear all hot plug events that are currently queued since
they're no longer relevant.

Note that SLOF cannot currently populate hot plugged PCI bridges or PHBs
at CAS. Until this limitation is lifted, SLOF will reset the machine when
this scenario occurs : this will allow the FDT to be fully processed when
SLOF is started again (ie. the same effect as the CAS reboot that would
occur anyway without this patch).

Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <158257222352.4102917.8984214333937947307.stgit@bahia.lan>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2020-03-17 09:41:14 +11:00
..
9pfs 9p/proxy: Fix export_flags 2020-03-10 16:12:49 +01:00
acpi hw/acpi: Include "hw/mem/nvdimm.h" 2020-03-09 15:59:31 +01:00
adc hw/*/Makefile.objs: Move many .o files to common-objs 2020-02-04 09:00:57 +01:00
alpha hw/alpha/dp264: Include "net/net.h" 2020-03-09 15:59:31 +01:00
arm hw/arm/virt: kvm: allow gicv3 by default if v2 cannot work 2020-03-12 16:27:33 +00:00
audio hw/audio/fmopl: Fix a typo twice 2020-03-09 15:59:31 +01:00
block qapi: Flatten object-add 2020-03-06 17:21:27 +01:00
char hw/char/exynos4210_uart: Fix memleaks in exynos4210_uart_init 2020-02-13 14:14:55 +00:00
core core/qdev: fix memleak in qdev_get_gpio_out_connector() 2020-03-09 15:59:31 +01:00
cpu cpu/arm11mpcore: Set number of GIC priority bits to 4 2020-02-28 16:14:57 +00:00
cris hw: Make MachineClass::is_default a boolean type 2020-02-28 14:57:19 -05:00
display stdvga+bochs-display: add dummy mmio handler 2020-03-16 12:40:47 +01:00
dma dma/xlnx-zdma: Remove redundant statement in zdma_write_dst() 2020-03-09 15:59:31 +01:00
gpio hw/*/Makefile.objs: Move many .o files to common-objs 2020-02-04 09:00:57 +01:00
hppa hw/hppa/machine: Include "net/net.h" 2020-03-09 15:59:31 +01:00
hyperv add device_legacy_reset function to prepare for reset api change 2020-01-30 16:02:03 +00:00
i2c hw/i2c/smbus_ich9: Include "qemu/range.h" 2020-03-09 15:59:31 +01:00
i386 hw/i386: Include "hw/mem/nvdimm.h" 2020-03-09 15:59:31 +01:00
ide hw/ide: Let the DMAIntFunc prototype use a boolean 'is_write' argument 2020-02-20 14:47:08 +01:00
input hw/input: Do not enable CONFIG_PCKBD by default 2020-02-04 09:01:31 +01:00
intc hw/intc/armv7m_nvic: Rebuild hflags on reset 2020-03-12 16:01:37 +00:00
ipack qdev: set properties with device_class_set_props() 2020-01-24 20:59:15 +01:00
ipmi qdev: set properties with device_class_set_props() 2020-01-24 20:59:15 +01:00
isa hw/southbridge/ich9: Removed unused headers 2020-03-09 15:59:31 +01:00
lm32 hw: Make MachineClass::is_default a boolean type 2020-02-28 14:57:19 -05:00
m68k hw: Make MachineClass::is_default a boolean type 2020-02-28 14:57:19 -05:00
mem spapr: Add NVDIMM device support 2020-02-21 09:15:04 +11:00
microblaze hw: Make MachineClass::is_default a boolean type 2020-02-28 14:57:19 -05:00
mips hw: Make MachineClass::is_default a boolean type 2020-02-28 14:57:19 -05:00
misc target-arm queue: 2020-03-12 17:34:34 +00:00
moxie hw: Make MachineClass::is_default a boolean type 2020-02-28 14:57:19 -05:00
net hw/arm/allwinner-h3: add EMAC ethernet device 2020-03-12 16:27:33 +00:00
nios2 hw: Make MachineClass::is_default a boolean type 2020-02-28 14:57:19 -05:00
nubus hw/m68k: add Nubus support 2019-10-28 19:06:47 +01:00
nvram Let cpu_[physical]_memory() calls pass a boolean 'is_write' argument 2020-02-20 14:47:08 +01:00
openrisc hw: Make MachineClass::is_default a boolean type 2020-02-28 14:57:19 -05:00
pci pcie_root_port: Add hotplug disabling option 2020-03-08 09:18:29 -04:00
pci-bridge pcie_root_port: Add hotplug disabling option 2020-03-08 09:18:29 -04:00
pci-host hw/pci-host/q35: Remove unused includes 2020-03-09 15:59:31 +01:00
pcmcia hw/*/Makefile.objs: Move many .o files to common-objs 2020-02-04 09:00:57 +01:00
ppc spapr: Handle pending hot plug/unplug requests at CAS 2020-03-17 09:41:14 +11:00
rdma qdev: set properties with device_class_set_props() 2020-01-24 20:59:15 +01:00
riscv RISC-V Patches for the 5.0 Soft Freeze, Part 3 2020-03-03 11:06:39 +00:00
rtc hw/arm/allwinner: add RTC device support 2020-03-12 16:27:33 +00:00
s390x s390x: ipl: Consolidate iplb validity check into one function 2020-03-10 10:18:20 +01:00
scsi scsi/scsi-disk: Remove redundant statement in scsi_disk_emulate_command() 2020-03-09 15:59:31 +01:00
sd hw/arm/allwinner: add SD/MMC host controller 2020-03-12 16:27:33 +00:00
semihosting semihosting: add qemu_semihosting_console_inc for SYS_READC 2020-01-09 11:41:29 +00:00
sh4 hw: Make MachineClass::is_default a boolean type 2020-02-28 14:57:19 -05:00
smbios hw/smbios/smbios: Remove unused include 2020-02-06 10:38:57 +01:00
sparc hw: Make MachineClass::is_default a boolean type 2020-02-28 14:57:19 -05:00
sparc64 hw: Make MachineClass::is_default a boolean type 2020-02-28 14:57:19 -05:00
ssi aspeed/smc: Fix User mode select/unselect scheme 2020-03-12 16:01:37 +00:00
timer hw/timer/hpet: Include "exec/address-spaces.h" 2020-03-09 15:59:31 +01:00
tpm tpm: Add the SysBus TPM TIS device 2020-03-05 12:18:08 -05:00
tricore hw: Do not initialize MachineClass::is_default to 0 2020-02-28 14:57:19 -05:00
unicore32 hw: Make MachineClass::is_default a boolean type 2020-02-28 14:57:19 -05:00
usb hw/arm/allwinner-h3: add USB host controller 2020-03-12 16:27:33 +00:00
vfio hw/vfio/display: Remove superfluous semicolon 2020-02-18 20:20:49 +01:00
virtio vhost-vsock: fix error message output 2020-03-08 09:27:09 -04:00
watchdog qdev: set properties with device_class_set_props() 2020-01-24 20:59:15 +01:00
xen xen-bus/block: explicitly assign event channels to an AioContext 2020-02-27 11:50:30 +00:00
xenpv trivial: Remove xenfb_enabled from sysemu.h 2020-02-04 09:00:57 +01:00
xtensa hw/xtensa/xtfpga:fix leak of fdevice tree blob 2020-02-19 10:33:38 +01:00
Kconfig Remove the core bluetooth code 2019-12-17 09:01:14 +01:00
Makefile.objs Remove the core bluetooth code 2019-12-17 09:01:14 +01:00