Binbin Wu 2fd6e119ca hv: vmcall: hv should not change guest RAX vmcall is undefined ...

HV passes the return value of vmcall by register RAX unconditionally.
However, if the vmcall is undefined for a guest, RAX value of guest vcpu
should not be changed.

According to SDM Vol. 3C 30-9, VMCALL is allowed from any CPL in guest.
VMCALL is NOT allowed from  CPL > 0 in vmx root mode.
ACRN hypervisor doesn't call VMCALL in vmx root mode, though.

In current code, ACRN also deny VMCALL from CPL > 0 in guest.
So for this case, #GP will not be injected, instead, modify the RAX to
notify the return value.

Tracked-On: #2405
Signed-off-by: Binbin Wu <binbin.wu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>

2019-02-18 11:56:42 +08:00

..

boot

function name change in init.c

2018-12-19 09:07:14 +08:00

configs

HV: repace vpci_vdev_array with pci_ptdev config

2019-02-03 08:18:54 +08:00

guest

hv: vmcall: hv should not change guest RAX vmcall is undefined

2019-02-18 11:56:42 +08:00

cpu_caps.c

hv:Change structure boot_cpu_data to static

2019-01-07 11:23:22 +08:00

cpu_state_tbl.c

hv:Change structure boot_cpu_data to static

2019-01-07 11:23:22 +08:00

cpu.c

HV: scan all physical PCI devices and store all needed info in array

2019-02-02 15:24:43 +08:00

e820.c

hv:remove several redundancy variables related memory

2019-02-02 22:59:34 +08:00

gdt.c

fix "Procedure is not pure assembler"

2018-11-13 16:28:58 +08:00

idt.S

move idt.S and idt.h out of boot component

2018-12-12 09:07:43 +08:00

init.c

HV: Modularize vtd.c to remove acrn_vm usage

2019-02-06 08:53:46 +08:00

ioapic.c

hv: Use Interrupt Remapping format for programming interrupt sources

2019-02-01 15:54:55 +08:00

irq.c

HV: modularization improve UEFI macro control code

2019-01-30 16:11:39 +08:00

Kconfig

hv: Add support to add IR tables

2019-02-01 15:54:55 +08:00

lapic.c

hv: send IPI instead of irq injection to notify vcpu with lapic pt

2019-01-28 19:47:33 +08:00

mmu.c

hv:Move severl variable declaration for boot code

2019-01-25 21:32:21 +08:00

notify.c

HV: rename the term of vm0 to sos vm

2019-01-21 18:03:31 +08:00

page.c

HV: rename the term of vm0 to sos vm

2019-01-21 18:03:31 +08:00

pagetable.c

hv: replace improper use of panic with ASSERT

2019-01-31 11:09:39 +08:00

pm.c

HV: Modularize vtd.c to remove acrn_vm usage

2019-02-06 08:53:46 +08:00

retpoline-thunk.S

license: Replace license text with SPDX tag

2018-06-01 10:43:06 +08:00

sched.S

replace arch_switch_to with pure asm code instead of inline asm

2019-01-25 11:39:47 +08:00

security.c

hv: coding style: refine cpu related function to one exit

2018-12-21 13:34:01 +08:00

static_checks.c

hv: use int32_t replace int

2018-12-12 13:08:10 +08:00

timer.c

hv:fix violations

2019-01-11 16:52:28 +08:00

trampoline.c

HV: modularization improve UEFI macro control code

2019-01-30 16:11:39 +08:00

vmx.c

HV: modularization improve UEFI macro control code

2019-01-30 16:11:39 +08:00

vtd.c

HV: Remove snoopy_mem from iommu

2019-02-14 10:16:21 +08:00

wakeup.S

HV: modularization to refine pm related code.

2018-12-19 13:02:09 +08:00