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e9688fabc3
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Roman Kagan e9688fabc3 hyperv: ensure VP index equal to QEMU cpu_index 
Hyper-V identifies vCPUs by Virtual Processor (VP) index which can be
queried by the guest via HV_X64_MSR_VP_INDEX msr.  It is defined by the
spec as a sequential number which can't exceed the maximum number of
vCPUs per VM.

It has to be owned by QEMU in order to preserve it across migration.

However, the initial implementation in KVM didn't allow to set this
msr, and KVM used its own notion of VP index.  Fortunately, the way
vCPUs are created in QEMU/KVM makes it likely that the KVM value is
equal to QEMU cpu_index.

So choose cpu_index as the value for vp_index, and push that to KVM on
kernels that support setting the msr.  On older ones that don't, query
the kernel value and assert that it's in sync with QEMU.

Besides, since handling errors from vCPU init at hotplug time is
impossible, disable vCPU hotplug.

This patch also introduces accessor functions to encapsulate the mapping
between a vCPU and its vp_index.

Signed-off-by: Roman Kagan <rkagan@virtuozzo.com>
Message-Id: <20180702134156.13404-3-rkagan@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-07-16 16:58:16 +02:00
..
9pfs 9p: darwin: Explicitly cast comparisons of mode_t with -1 2018-06-29 12:32:10 +02:00
acpi nvdimm: make persistence option symbolic 2018-06-11 22:19:57 +03:00
adc
alpha hw/alpha: Use the IEC binary prefix definitions 2018-07-02 15:41:14 +02:00
arm hw/arm/smmu-common: Fix devfn computation in smmu_iommu_mr 2018-07-09 14:51:34 +01:00
audio audio/hda: fix CID 1393631 2018-07-03 11:45:33 +02:00
block Revert "block: Remove deprecated -drive geometry options" 2018-07-10 14:36:12 +02:00
bt
char Pull request 2018-06-30 13:59:53 +01:00
core Machine/NUMA fixes for -rc0 2018-07-09 21:31:40 +01:00
cpu
cris hw/cris: Use the IEC binary prefix definitions 2018-07-02 15:41:15 +02:00
display sm501: Set updated region dirty after 2D operation 2018-07-07 12:12:27 +10:00
dma hw/dma/omap_dma: Use qemu_log_mask(GUEST_ERROR) instead of fprintf 2018-06-26 17:50:40 +01:00
gpio hw/i2c: Use DeviceClass::realize instead of I2CSlaveClass::init 2018-06-01 15:14:31 +02:00
hppa hw/hppa: Use the IEC binary prefix definitions 2018-07-02 15:41:14 +02:00
i2c ppc4xx_i2c: Rewrite to model hardware more closely 2018-07-03 09:56:52 +10:00
i386 hyperv: ensure VP index equal to QEMU cpu_index 2018-07-16 16:58:16 +02:00
ide Revert "block: Remove deprecated -drive option serial" 2018-07-10 14:36:11 +02:00
input hw/input/tsc2005: Convert a fprintf() call to trace events 2018-06-29 15:04:18 +01:00
intc ioapic: remove useless lower bounds check 2018-07-06 18:39:19 +02:00
ipack hw/ipack: Use the IEC binary prefix definitions 2018-07-02 15:41:12 +02:00
ipmi object: fix OBJ_PROP_LINK_UNREF_ON_RELEASE ambivalence 2018-06-12 12:07:30 +02:00
isa hw/isa/smc37c669: Change the parallel I/O base to 378H 2018-06-16 19:46:54 -10:00
lm32 hw/lm32: Use the IEC binary prefix definitions 2018-07-02 15:41:15 +02:00
m68k hw/m68k: Use the IEC binary prefix definitions 2018-07-02 15:41:14 +02:00
mem pc-dimm: get_memory_region() will not fail after realize 2018-06-28 19:05:34 +02:00
microblaze hw/microblaze: Use the IEC binary prefix definitions 2018-07-02 15:41:15 +02:00
mips * IEC units series (Philippe) 2018-07-02 19:07:19 +01:00
misc hyperv: rename vcpu_id to vp_index 2018-07-16 16:58:16 +02:00
moxie
net hw/net/dp8393x: don't make prom region 'nomigrate' 2018-07-09 14:51:35 +01:00
nios2 hw/nios2: Use the IEC binary prefix definitions 2018-07-02 15:41:15 +02:00
nvram hw/ppc: Use the IEC binary prefix definitions 2018-07-02 15:41:16 +02:00
openrisc
pci
pci-bridge
pci-host hw/ppc: Use the IEC binary prefix definitions 2018-07-02 15:41:16 +02:00
pcmcia
ppc sam460ex: Make sam460ex_load_device_tree() handle all errors internally 2018-07-09 14:38:45 +10:00
rdma hw/rdma: Use the IEC binary prefix definitions 2018-07-02 15:41:17 +02:00
riscv hw/riscv/sifive_u: Connect the Cadence GEM Ethernet device 2018-07-05 15:24:25 -07:00
s390x error: Remove NULL checks on error_propagate() calls 2018-07-11 14:36:54 +02:00
scsi scsi-disk: Block Device Characteristics emulation fix 2018-07-12 18:24:08 +02:00
sd hw/sd/omap_mmc: Split 'pseudo-reset' from 'power-on-reset' 2018-07-09 14:51:34 +01:00
sh4 hw/sh4: Use the IEC binary prefix definitions 2018-07-02 15:41:15 +02:00
smbios hw/smbios: Use the IEC binary prefix definitions 2018-07-02 15:41:12 +02:00
sparc * IEC units series (Philippe) 2018-07-02 19:07:19 +01:00
sparc64 * IEC units series (Philippe) 2018-07-02 19:07:19 +01:00
ssi hw/ssi/omap_spi: Use qemu_log_mask(GUEST_ERROR) instead of fprintf 2018-06-26 17:50:40 +01:00
timer hw/timer/cmsdk-apb-timer: run or stop timer on writes to RELOAD and VALUE 2018-07-09 14:51:34 +01:00
tpm tpm: extend TPM TIS with state migration support 2018-05-24 12:07:04 -04:00
tricore hw/tricore: Use the IEC binary prefix definitions 2018-07-02 15:41:14 +02:00
unicore32
usb Revert "block: Remove deprecated -drive option serial" 2018-07-10 14:36:11 +02:00
vfio vfio/pci: do not set the PCIDevice 'has_rom' attribute 2018-07-11 13:43:57 -06:00
virtio virtio-rng: process pending requests on DRIVER_OK 2018-06-28 04:46:16 +03:00
watchdog hw/watchdog/wdt_i6300esb: Convert away from old_mmio 2018-06-15 15:23:34 +01:00
xen xen: Don't use memory_region_init_ram_nomigrate() in pci_assign_dev_load_option_rom() 2018-06-22 13:28:42 +01:00
xenpv hw/xen: Use the IEC binary prefix definitions 2018-07-02 15:41:13 +02:00
xtensa hw/xtensa: Use the IEC binary prefix definitions 2018-07-02 15:41:14 +02:00
Makefile.objs hw: allow compiling out SCSI 2018-06-01 15:14:31 +02:00