This series fixes a number of issues:
- When powering on and resetting VCPUs, we can be preempted in the
middle which can lead to guest system register corruption.
- We were missing support for PSCI ON_PENDING when multiple VCPUs try
to turn on a target VCPU at the same time.
- Powering off a VCPU could race with powering on the same VCPU.
- We unnecesarily panic'ed if we found a non-initialized guest system
register.
The main approach to fixing all these problems is by using VCPU
requests.
See the individual patches for more details.
Christoffer Dall (3):
KVM: arm/arm64: Reset the VCPU without preemption and vcpu state
loaded
KVM: arm/arm64: Require VCPU threads to turn them self off
KVM: arm/arm64: Implement PSCI ON_PENDING when turning on VCPUs
Marc Zyngier (2):
arm/arm64: KVM: Allow a VCPU to fully reset itself
arm/arm64: KVM: Don't panic on failure to properly reset system
registers
arch/arm/include/asm/kvm_host.h | 22 ++++++++++-
arch/arm/kvm/coproc.c | 4 +-
arch/arm/kvm/reset.c | 24 ++++++++++++
arch/arm64/include/asm/kvm_host.h | 23 ++++++++++-
arch/arm64/kvm/reset.c | 50 +++++++++++++++++++++++-
arch/arm64/kvm/sys_regs.c | 4 +-
virt/kvm/arm/arm.c | 40 ++++++++++++++-----
virt/kvm/arm/psci.c | 64 +++++++++++++++----------------
8 files changed, 177 insertions(+), 54 deletions(-)
--
2.18.0
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