Yin Fengwei e3346754e1 hv: add fixup to trampline code ...

Now, trampline code is used by both AP start and BSP s3 resume.

For s3 resume, ACPI (5.2.10 Firmware ACPI Control Structure (FACS).
table 5-37) defines the real mode address should be set to:
  realmode address = CS(waking_vec >> 4): IP(wakeing_vec & 0x000F)

But not all bootloader (like ABL) follow ACPI definition about the
CS:IP setup before jump to trampline code for S3 resume.

To handle all these cases, a long jmp is issued at very beginning
of trampline code to fixup the CS:IP setup. After the fixup, the
CS is set to: (waking_vect >> 4), the IP is set to: (the_address_
of_next_instruction_of_long_jmp & 0xF). Which is aligned with ACPI
definition.

Another thing is that we can't calculate the fixup CS and IP value.
The reason is related with limitations of real mode (can't get
current ip address without stack). So we calculate the CS and IP
when preparing the trampline code.

Signed-off-by: Zheng Gen <gen.zheng@intel.com>
Signed-off-by: Yin Fengwei <fengwei.yin@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
Acked-by: Eddie Dong <Eddie.dong@intel.com>

2018-06-08 13:45:02 +08:00

..

debug

HV: further cleanup of header inclusions

2018-05-25 10:45:56 +08:00

guest

hv: don't combine the trampline code with AP start

2018-06-08 13:45:02 +08:00

assign.c

license: Replace license text with SPDX tag

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

cpu_primary.S

license: Replace license text with SPDX tag

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

cpu_state_tbl.c

license: Replace license text with SPDX tag

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

cpu.c

hv: add fixup to trampline code

2018-06-08 13:45:02 +08:00

cpuid.c

hv: enable MTRR virtualization

2018-06-08 12:06:15 +08:00

ept.c

hv: add APIs to allow updating EPT mem type

2018-06-08 12:06:15 +08:00

gdt.c

HV:treewide:C99-friendly per_cpu implementation change the per_cpu method

2018-06-05 17:09:00 +08:00

idt.S

license: Replace license text with SPDX tag

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

interrupt.c

hv: vmx: add vpid support

2018-06-04 17:11:15 +08:00

intr_lapic.c

license: Replace license text with SPDX tag

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

intr_main.c

license: Replace license text with SPDX tag

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

io.c

license: Replace license text with SPDX tag

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

ioapic.c

license: Replace license text with SPDX tag

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

irq.c

HV:treewide:C99-friendly per_cpu implementation change the per_cpu method

2018-06-05 17:09:00 +08:00

mmu.c

hv: add APIs to allow updating EPT mem type

2018-06-08 12:06:15 +08:00

mtrr.c

hv: update EPT when guests change MTRRs

2018-06-08 12:06:15 +08:00

notify.c

license: Replace license text with SPDX tag

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

retpoline-thunk.S

license: Replace license text with SPDX tag

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

softirq.c

HV:treewide:C99-friendly per_cpu implementation change the per_cpu method

2018-06-05 17:09:00 +08:00

timer.c

HV:treewide:C99-friendly per_cpu implementation change the per_cpu method

2018-06-05 17:09:00 +08:00

trampline.S

hv: add fixup to trampline code

2018-06-08 13:45:02 +08:00

trusty.c

trusty: invept should go through all vcpus

2018-06-07 12:28:18 +08:00

vmexit.c

vm: remove current_vcpu from vm structure

2018-06-07 12:28:18 +08:00

vmx_asm.S

license: Replace license text with SPDX tag

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

vmx.c

hv: use vmx_write_cr<#> to init control register of uefi platform

2018-06-08 12:05:02 +08:00

vtd.c

license: Replace license text with SPDX tag

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