[PATCH 0/5] x86/Hyper-V: Add AMD Secure AVIC for Hyper-V platform

[Tianyu Lan <ltykernel@gmail.com>]

Secure AVIC is a new hardware feature in the AMD64
architecture to allow SEV-SNP guests to prevent the
hypervisor from generating unexpected interrupts to
a vCPU or otherwise violate architectural assumptions
around APIC behavior.

Each vCPU has a guest-allocated APIC backing page of
size 4K, which maintains APIC state for that vCPU.
APIC backing page's ALLOWED_IRR field indicates the
interrupt vectors which the guest allows the hypervisor
to send.

This patchset is to enable the feature for Hyper-V
platform. Patch "Drivers: hv: Allow vmbus message
synic interrupt injected from Hyper-V" is to expose
new fucntion hv_enable_coco_interrupt() and device
driver and arch code may update AVIC backing page
ALLOWED_IRR field to allow Hyper-V inject associated
vector.

The patchset is based on the tip tree commit 27a17e02418e
(x86/sev: Indicate the SEV-SNP guest supports Secure AVIC)

Tianyu Lan (5):
  x86/hyperv: Don't use hv apic driver when Secure AVIC is available
  drivers: hv: Allow vmbus message synic interrupt injected from Hyper-V
  x86/hyperv: Don't use auto-eoi when Secure AVIC is available
  x86/hyperv: Allow Hyper-V to inject STIMER0 interrupts
  x86/Hyper-V: Add Hyper-V specific hvcall to set backing page

 arch/x86/hyperv/hv_apic.c           |  8 ++++++
 arch/x86/hyperv/hv_init.c           | 31 ++++++++++++++++++++++-
 arch/x86/hyperv/ivm.c               | 38 ++++++++++++++++++++++++++++
 arch/x86/include/asm/mshyperv.h     |  2 ++
 arch/x86/kernel/apic/x2apic_savic.c |  9 ++++++-
 arch/x86/kernel/cpu/mshyperv.c      |  3 +++
 drivers/hv/hv.c                     |  2 ++
 drivers/hv/hv_common.c              |  5 ++++
 include/asm-generic/mshyperv.h      |  1 +
 include/hyperv/hvgdk_mini.h         | 39 +++++++++++++++++++++++++++++
 10 files changed, 136 insertions(+), 2 deletions(-)

-- 
2.25.1