haraldwolff/qemu-patch-raspberry4
1
0
Fork 0
Code Issues Pull requests Packages Projects Releases Wiki Activity
qemu-patch-raspberry4/hw
History
Igor Mammedov c2d2a81b41 pc: make sure that guest isn't able to unplug the first cpu 
The first cpu unplug wasn't ever supported and corresponding
monitor/qmp commands refuse to unplug it. However guest is able
to issue eject request either using following command:
  # echo 1 >/sys/devices/system/cpu/cpu0/firmware_node/eject
or directly writing to cpu hotplug registers, which makes
qemu crash with SIGSEGV following back trace:

   kvm_flush_coalesced_mmio_buffer ()
       while (ring->first != ring->last)
   ...
   qemu_flush_coalesced_mmio_buffer
   prepare_mmio_access
   flatview_read_continue
   flatview_read
   address_space_read_full
   address_space_rw
   kvm_cpu_exec(cpu!0)
   qemu_kvm_cpu_thread_fn

the reason for which is that ring == KVMState::coalesced_mmio_ring
happens to be a part of 1st CPU that was uplugged by guest.

Fix it by forbidding 1st cpu unplug from guest side and in addition
remove CPU0._EJ0 ACPI method to make clear that unplug of the first
CPU is not supported.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-09-07 17:05:18 -04:00
..
9pfs 9p: darwin: Explicitly cast comparisons of mode_t with -1 2018-06-29 12:32:10 +02:00
acpi pc: make sure that guest isn't able to unplug the first cpu 2018-09-07 17:05:18 -04:00
adc Include qapi/error.h exactly where needed 2018-02-09 13:50:17 +01:00
alpha hw/alpha: Use the IEC binary prefix definitions 2018-07-02 15:41:14 +02:00
arm hw/arm/mps2: Fix ID register errors on AN511 and AN385 2018-08-24 13:17:50 +01:00
audio fix "Missing break in switch" coverity reports 2018-08-23 13:32:50 +02:00
block block: Remove deprecated -drive option serial 2018-08-15 12:50:39 +02:00
bt hw/bt: Replace fprintf(stderr, "*\n" with error_report() 2018-01-22 09:51:00 +01:00
char imx_serial: Generate interrupt on receive data ready if enabled 2018-08-20 11:24:31 +01:00
core sysbus: always allow explicit_ofw_unit_address() to override address generation 2018-08-16 22:27:43 -03:00
cpu hw/cpu/a15mpcore: If CPU has EL2, enable it on the GIC and wire it up 2018-08-24 13:17:34 +01:00
cris hw/cris: Use the IEC binary prefix definitions 2018-07-02 15:41:15 +02:00
display hw/display/bcm2835_fb: Validate bcm2835_fb_mbox_push() config 2018-08-24 13:17:50 +01:00
dma hw/dma/pl080: Remove hw_error() if DMA is enabled 2018-08-20 11:24:33 +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 i2c: pm_smbus: Add the ability to force block transfer enable 2018-08-23 18:46:25 +02:00
i386 pc: acpi: revert back to 1 SRAT entry for hotpluggable area 2018-09-07 17:05:18 -04:00
ide block: Remove deprecated -drive option serial 2018-08-15 12:50:39 +02:00
input hw/input/tsc2005: Convert a fprintf() call to trace events 2018-06-29 15:04:18 +01:00
intc hw/intc/arm_gic: Make per-cpu GICH memory regions 0x200 bytes large 2018-08-24 13:17:31 +01:00
ipack hw/ipack: Use the IEC binary prefix definitions 2018-07-02 15:41:12 +02:00
ipmi ipmi: Use proper struct reference for BT vmstate 2018-08-23 18:46:25 +02:00
isa i2c: pm_smbus: Add the ability to force block transfer enable 2018-08-23 18:46:25 +02:00
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: assign and verify the "addr" property during pre_plug 2018-08-23 18:46:25 +02:00
microblaze hw/microblaze/xlnx-zynqmp-pmu: Fix introspection problem in 'xlnx, zynqmp-pmu-soc' 2018-07-23 15:21:25 +01:00
mips mips_malta: Fix semihosting argument passing for nanoMIPS bare metal 2018-08-24 17:51:59 +02:00
misc check/next for 20180822 2018-08-24 14:46:31 +01:00
moxie Change references to serial_hds[] to serial_hd() 2018-04-26 13:57:00 +01:00
net e1000e: Prevent MSI/MSI-X storms 2018-07-20 08:30:48 +08:00
nios2 hw/nios2: Use the IEC binary prefix definitions 2018-07-02 15:41:15 +02:00
nvram fw_cfg: ignore suffixes in the bootdevice list dependent on machine class 2018-08-16 22:27:43 -03:00
openrisc Change references to serial_hds[] to serial_hd() 2018-04-26 13:57:00 +01:00
pci hw/pci: factor PCI reserve resources to a separate structure 2018-09-07 17:05:18 -04:00
pci-bridge hw/pci: add PCI resource reserve capability to legacy PCI bridge 2018-09-07 17:05:18 -04:00
pci-host hw/pci-host/bonito: Move away from old_mmio accessors 2018-08-21 09:52:22 +02:00
pcmcia hw: Clean up includes 2016-01-29 15:07:25 +00:00
ppc * x86 TCG fixes for 64-bit call gates (Andrew) 2018-08-23 19:03:54 +01:00
rdma config: split PVRDMA from RDMA 2018-08-18 18:01:34 +03:00
riscv spike: Fix crash when introspecting the device 2018-07-19 09:05:48 -07:00
s390x s390x: remove 's390-squash-mcss' option 2018-08-20 14:18:49 +02:00
scsi vhost-scsi: expose 't10_pi' property for VIRTIO_SCSI_F_T10_PI 2018-08-23 18:46:25 +02:00
sd sdhci: add i.MX SD Stable Clock bit 2018-08-20 11:24:32 +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 sun4m: don't use legacy fw_cfg_init_mem() function 2018-08-20 19:18:31 +01:00
sparc64 sun4u: ensure kernel_top is always initialised 2018-08-20 19:18:31 +01:00
ssi hw/ssi/pl022: Correct wrong DMACR and ICR handling 2018-08-24 13:17:46 +01:00
timer hw/timer/cmsdk-apb-dualtimer: Implement CMSDK dual timer module 2018-08-24 13:17:41 +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 hw/input/i8042: Extract declarations from i386/pc.h into input/i8042.h 2018-03-12 16:12:48 +01:00
usb dev-mtp: rename x-root to rootdir 2018-08-21 10:27:59 +02:00
vfio vfio/pci: Fix failure to close file descriptor on error 2018-08-23 10:45:58 -06:00
virtio virtio: update MemoryRegionCaches when guest negotiates features 2018-09-07 17:05:18 -04:00
watchdog hw/watchdog/cmsdk_apb_watchdog: Implement CMSDK APB watchdog module 2018-08-20 11:24:33 +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