The 6.4 kernel picks up support for a generalized SMCCC filter, allowing
userspace to select hypercall ranges that should be forwarded to
userspace. This is a shameless attempt of making future SMCCC interfaces
the responsibility of userspace :)
As a starting point, let's move PSCI up into userspace. KVM already
leans on userspace for handling calls that have a system-wide effect.
Tested on linux-next with a 64 vCPU VM. Additionally, I took a stab at
running kvm-unit-test's psci test, which passes.
Apologies for some of the changelogs being a bit short. It's Friday, and
I'm lazy.
Oliver Upton (21):
update_headers: Use a list for arch-generic headers
update_headers: Add missing entries to list of headers to copy
Copy 64-bit alignment attrtibutes from Linux 6.4-rc1
Update headers with Linux 6.4-rc1
Import arm-smccc.h from Linux 6.4-rc1
aarch64: Copy cputype.h from Linux 6.4-rc1
arm: Stash kvm_vcpu_init for later use
arm: Add support for resetting a vCPU
arm: Use KVM_SET_MP_STATE ioctl to power off non-boot vCPUs
aarch64: Expose ARM64_CORE_REG() for general use
arm: Generalize execution state specific VM initialization
Add helpers to pause the VM from vCPU thread
aarch64: Add support for finding vCPU for given MPIDR
aarch64: Add skeleton implementation for PSCI
aarch64: psci: Implement CPU_SUSPEND
aarch64: psci: Implement CPU_OFF
aarch64: psci: Implement CPU_ON
aarch64: psci: Implement AFFINITY_INFO
aarch64: psci: Implement MIGRATE_INFO_TYPE
aarch64: psci: Implement SYSTEM_{OFF,RESET}
aarch64: smccc: Start sending PSCI to userspace
Makefile | 4 +-
arm/aarch32/include/kvm/kvm-arch.h | 2 +-
arm/aarch32/kvm-cpu.c | 5 +
arm/aarch64/include/asm/cputype.h | 186 +++++
arm/aarch64/include/asm/kvm.h | 38 +
arm/aarch64/include/asm/smccc.h | 65 ++
arm/aarch64/include/kvm/kvm-arch.h | 2 +-
arm/aarch64/include/kvm/kvm-config-arch.h | 6 +-
arm/aarch64/include/kvm/kvm-cpu-arch.h | 28 +-
arm/aarch64/kvm-cpu.c | 48 +-
arm/aarch64/kvm.c | 25 +-
arm/aarch64/psci.c | 206 +++++
arm/aarch64/smccc.c | 82 ++
arm/include/arm-common/kvm-arch.h | 2 +
arm/include/arm-common/kvm-config-arch.h | 1 +
arm/include/arm-common/kvm-cpu-arch.h | 4 +-
arm/kvm-cpu.c | 35 +-
arm/kvm.c | 2 +-
include/kvm/kvm-cpu.h | 3 +
include/linux/arm-smccc.h | 240 ++++++
include/linux/kvm.h | 55 +-
include/linux/psci.h | 47 ++
include/linux/types.h | 13 +
include/linux/vfio.h | 920 +++++++++++++++++++++-
include/linux/vhost.h | 186 ++---
include/linux/virtio_blk.h | 105 +++
include/linux/virtio_net.h | 4 +
kvm-cpu.c | 15 +
riscv/include/asm/kvm.h | 3 +
util/update_headers.sh | 25 +-
x86/include/asm/kvm.h | 50 +-
31 files changed, 2225 insertions(+), 182 deletions(-)
create mode 100644 arm/aarch64/include/asm/cputype.h
create mode 100644 arm/aarch64/include/asm/smccc.h
create mode 100644 arm/aarch64/psci.c
create mode 100644 arm/aarch64/smccc.c
create mode 100644 include/linux/arm-smccc.h
base-commit: 77b108c6a6f1c66fb7f60a80d17596bb80bda8ad
--
2.41.0.rc0.172.g3f132b7071-goog
