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Yang Zhong 2c3132279b sgx: Reset the vEPC regions during VM reboot 
For bare-metal SGX on real hardware, the hardware provides guarantees
SGX state at reboot.  For instance, all pages start out uninitialized.
The vepc driver provides a similar guarantee today for freshly-opened
vepc instances, but guests such as Windows expect all pages to be in
uninitialized state on startup, including after every guest reboot.

Qemu can invoke the ioctl to bring its vEPC pages back to uninitialized
state. There is a possibility that some pages fail to be removed if they
are SECS pages, and the child and SECS pages could be in separate vEPC
regions.  Therefore, the ioctl returns the number of EREMOVE failures,
telling Qemu to try the ioctl again after it's done with all vEPC regions.

The related kernel patches:
Link: https://lkml.kernel.org/r/20211021201155.1523989-3-pbonzini@redhat.com

Signed-off-by: Yang Zhong <yang.zhong@intel.com>
Message-Id: <20211101162009.62161-6-yang.zhong@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-11-10 22:57:40 +01:00
..
9pfs 9pfs: use P9Array in v9fs_walk() 2021-10-27 14:45:22 +02:00
acpi hw/acpi: Add VIOT table 2021-11-01 18:49:10 -04:00
adc hw/adc: Add basic Aspeed ADC model 2021-10-12 08:20:08 +02:00
alpha hw/alpha: Provide a PCI-ISA bridge device node 2021-06-28 07:27:32 -07:00
arm hw/arm/virt: Rename default_bus_bypass_iommu 2021-11-02 14:14:55 -04:00
audio qbus: Rename qbus_create_inplace() to qbus_init() 2021-09-30 13:42:10 +01:00
avr hw/avr/atmega.c: use the avr51 cpu for atmega1280 2021-05-13 19:11:42 +02:00
block qbus: Rename qbus_create_inplace() to qbus_init() 2021-09-30 13:42:10 +01:00
char hw/char/sh_serial: Add device id to trace output 2021-10-30 18:39:37 +02:00
core numa: avoid crash with SGX and "info numa" 2021-11-10 13:37:36 +01:00
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 virtio-gpu: splitting one extended mode guest fb into n-scanouts 2021-11-05 12:29:19 +01:00
dma hw/dma: sifive_pdma: Don't run DMA when channel is disclaimed 2021-10-07 08:41:33 +10:00
gpio hw: aspeed_gpio: Fix GPIO array indexing 2021-10-12 08:20:08 +02:00
hppa docs: fix references to docs/devel/tracing.rst 2021-06-02 06:51:09 +02:00
hyperv qbus: Rename qbus_create() to qbus_new() 2021-09-30 13:44:08 +01:00
i2c aspeed/i2c: QOMify AspeedI2CBus 2021-10-12 08:20:08 +02:00
i386 sgx: Reset the vEPC regions during VM reboot 2021-11-10 22:57:40 +01:00
ide ide: Cap LBA28 capacity announcement to 2^28-1 2021-11-02 13:02:46 +01:00
input hw/input/lasips2: Fix typos in function names 2021-10-31 21:05:40 +01:00
intc hw/intc/sh_intc: Remove unneeded local variable initialisers 2021-10-30 18:39:37 +02:00
ipack qbus: Rename qbus_create_inplace() to qbus_init() 2021-09-30 13:42:10 +01:00
ipmi ipmi/sim: fix watchdog_expired data type error in IPMIBmcSim struct 2021-07-08 14:15:01 -05:00
isa vt82c686: Add a method to VIA_ISA to raise ISA interrupts 2021-10-18 00:41:36 +02:00
m68k q800: drop 8-bit graphic_depth check for Apple 21 inch display 2021-10-20 16:25:04 +02:00
mem kconfig: split CONFIG_SPARSE_MEM from fuzzing 2021-10-14 09:50:56 +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/boston: Add FDT generator 2021-10-18 00:41:36 +02:00
misc hw/misc: deprecate the 'sga' device 2021-11-02 17:24:18 +01:00
net e1000: fix tx re-entrancy problem 2021-11-05 11:31:42 +08:00
nios2 Do not include cpu.h if it's not really necessary 2021-05-02 17:24:51 +02:00
nubus qbus: Rename qbus_create_inplace() to qbus_init() 2021-09-30 13:42:10 +01:00
nvme qbus: Rename qbus_create_inplace() to qbus_init() 2021-09-30 13:42:10 +01:00
nvram hw/nvram: Fix Memory Leak in Xilinx ZynqMP eFuse device 2021-10-23 18:50:33 +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 pci: Export pci_for_each_device_under_bus*() 2021-11-01 19:36:11 -04:00
pci-bridge qdev: Make DeviceState.id independent of QemuOpts 2021-10-15 16:06:35 +02:00
pci-host hw/sh4: Coding style: White space fixes 2021-10-30 11:46:40 +02:00
pcmcia hw/pcmcia: Do not register PCMCIA type if not required 2021-05-02 17:24:50 +02:00
ppc pci: Export pci_for_each_device_under_bus*() 2021-11-01 19:36:11 -04:00
rdma qapi: introduce x-query-rdma QMP command 2021-11-02 15:55:14 +00:00
remote hw/remote/proxy: Categorize Wireless devices as 'Network' ones 2021-10-04 09:47:26 +02:00
riscv hw/riscv: opentitan: Fixup the PLIC context addresses 2021-10-28 14:39:23 +10:00
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 pci: Export pci_for_each_device_under_bus*() 2021-11-01 19:36:11 -04:00
scsi hw/scsi/scsi-disk: MODE_PAGE_ALLS not allowed in MODE SELECT commands 2021-11-08 08:55:29 +01:00
sd hw/sd: add nuvoton MMC 2021-11-02 14:14:55 -04:00
sensor hw/misc: Add Infineon DPS310 sensor model 2021-09-20 08:50:59 +02:00
sh4 hw/intc/sh_intc: Inline and drop sh_intc_source() function 2021-10-30 18:39:37 +02:00
smbios hw/smbios: support for type 41 (onboard devices extended information) 2021-05-14 10:26:18 -04:00
sparc sun4m: fix setting CPU id when more than one CPU is present 2021-09-08 11:09:45 +01:00
sparc64 hw/block/fdc: Extract ISA floppy controllers to fdc-isa.c 2021-06-25 08:53:28 -04:00
ssi aspeed/smc: Use a container for the flash mmio address space 2021-10-22 09:52:17 +02:00
timer hw/timer/sh_timer: Remove use of hw_error 2021-10-30 18:39:37 +02:00
tpm tpm: mark correct memory region range dirty when clearing RAM 2021-10-02 08:43:21 +02:00
tricore hw/tricore: fix inclusion of tricore_testboard 2021-07-20 20:10:21 +02:00
usb Initial conversion of HMP debugging commands to QMP 2021-11-03 08:04:32 -04:00
vfio vfio/common: Add a trace point when a MMIO RAM section cannot be mapped 2021-11-01 12:17:51 -06:00
virtio pc,pci,virtio: features, fixes 2021-11-02 19:24:17 -04:00
watchdog watchdog: remove select_watchdog_action 2021-11-02 15:57:27 +01:00
xen pci: Export pci_for_each_device_under_bus*() 2021-11-01 19:36:11 -04:00
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/arm: xlnx-zcu102: Add Xilinx eFUSE device 2021-09-30 13:42:10 +01:00
meson.build sensor: Move hardware sensors from misc to a sensor directory 2021-06-17 07:10:32 -05:00