[GIT PULL] KVM/arm updates for 5.5

Marc Zyngier
2019-11-20T16:43:15Z

Paolo, Radim,

Here's the bulk of KVM/arm updates for 5.5. On the menu, two new features:
- Stolen time is finally exposed to guests. Yay!
- We can report (and potentially emulate) instructions that KVM cannot
handle in kernel space to userspace. Yay again!

Apart from that, a fairly mundane bag of perf optimization, cleanup and
bug fixes.

Note that this series is based on a shared branch with the arm64 tree,
avoiding a potential delicate merge.

Please pull,

M.

The following changes since commit e6ea46511b1ae8c4491904c79411fcd29139af14:

firmware: arm_sdei: use common SMCCC_CONDUIT_* (2019-10-14 10:55:14 +0100)

are available in the Git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git tags/kvmarm-5.5

for you to fetch changes up to cd7056ae34af0e9424da97bbc7d2b38246ba8a2c:

Merge remote-tracking branch 'kvmarm/misc-5.5' into kvmarm/next (2019-11-08 11:27:29 +0000)

----------------------------------------------------------------
KVM/arm updates for Linux 5.5:

- Allow non-ISV data aborts to be reported to userspace
- Allow injection of data aborts from userspace
- Expose stolen time to guests
- GICv4 performance improvements
- vgic ITS emulation fixes
- Simplify FWB handling
- Enable halt pool counters
- Make the emulated timer PREEMPT_RT compliant

----------------------------------------------------------------
Christian Borntraeger (1):
KVM: arm/arm64: Show halt poll counters in debugfs

Christoffer Dall (4):
KVM: arm/arm64: Allow reporting non-ISV data aborts to userspace
KVM: arm/arm64: Allow user injection of external data aborts
KVM: arm/arm64: Factor out hypercall handling from PSCI code
KVM: arm64: Don't set HCR_EL2.TVM when S2FWB is supported

Marc Zyngier (6):
Merge remote-tracking branch 'arm64/for-next/smccc-conduit-cleanup' into kvm-arm64/stolen-time
Merge remote-tracking branch 'kvmarm/kvm-arm64/stolen-time' into kvmarm-master/next
KVM: arm64: vgic-v4: Move the GICv4 residency flow to be driven by vcpu_load/put
KVM: vgic-v4: Track the number of VLPIs per vcpu
KVM: arm64: Opportunistically turn off WFI trapping when using direct LPI injection
Merge remote-tracking branch 'kvmarm/misc-5.5' into kvmarm/next

Steven Price (10):
KVM: arm64: Document PV-time interface
KVM: arm64: Implement PV_TIME_FEATURES call
KVM: Implement kvm_put_guest()
KVM: arm64: Support stolen time reporting via shared structure
KVM: Allow kvm_device_ops to be const
KVM: arm64: Provide VCPU attributes for stolen time
arm/arm64: Provide a wrapper for SMCCC 1.1 calls
arm/arm64: Make use of the SMCCC 1.1 wrapper
arm64: Retrieve stolen time as paravirtualized guest
KVM: arm64: Select TASK_DELAY_ACCT+TASKSTATS rather than SCHEDSTATS

Thomas Gleixner (1):
KVM: arm/arm64: Let the timer expire in hardirq context on RT

Zenghui Yu (3):
KVM: arm/arm64: vgic: Remove the declaration of kvm_send_userspace_msi()
KVM: arm/arm64: vgic: Fix some comments typo
KVM: arm/arm64: vgic: Don't rely on the wrong pending table

Documentation/admin-guide/kernel-parameters.txt | 6 +-
Documentation/virt/kvm/api.txt | 55 +++++++++-
Documentation/virt/kvm/arm/pvtime.rst | 80 ++++++++++++++
Documentation/virt/kvm/devices/vcpu.txt | 14 +++
arch/arm/include/asm/kvm_arm.h | 1 +
arch/arm/include/asm/kvm_emulate.h | 9 +-
arch/arm/include/asm/kvm_host.h | 33 ++++++
arch/arm/include/uapi/asm/kvm.h | 3 +-
arch/arm/kvm/Makefile | 2 +-
arch/arm/kvm/guest.c | 14 +++
arch/arm/kvm/handle_exit.c | 2 +-
arch/arm/mm/proc-v7-bugs.c | 13 +--
arch/arm64/include/asm/kvm_arm.h | 3 +-
arch/arm64/include/asm/kvm_emulate.h | 26 ++++-
arch/arm64/include/asm/kvm_host.h | 37 +++++++
arch/arm64/include/asm/paravirt.h | 9 +-
arch/arm64/include/asm/pvclock-abi.h | 17 +++
arch/arm64/include/uapi/asm/kvm.h | 5 +-
arch/arm64/kernel/cpu_errata.c | 81 +++++---------
arch/arm64/kernel/paravirt.c | 140 ++++++++++++++++++++++++
arch/arm64/kernel/time.c | 3 +
arch/arm64/kvm/Kconfig | 4 +
arch/arm64/kvm/Makefile | 2 +
arch/arm64/kvm/guest.c | 23 ++++
arch/arm64/kvm/handle_exit.c | 4 +-
arch/arm64/kvm/inject_fault.c | 4 +-
drivers/irqchip/irq-gic-v4.c | 7 +-
include/Kbuild | 2 +
include/kvm/arm_hypercalls.h | 43 ++++++++
include/kvm/arm_psci.h | 2 +-
include/kvm/arm_vgic.h | 8 +-
include/linux/arm-smccc.h | 59 ++++++++++
include/linux/cpuhotplug.h | 1 +
include/linux/irqchip/arm-gic-v4.h | 4 +
include/linux/kvm_host.h | 26 ++++-
include/linux/kvm_types.h | 2 +
include/uapi/linux/kvm.h | 10 ++
virt/kvm/arm/arch_timer.c | 8 +-
virt/kvm/arm/arm.c | 49 ++++++++-
virt/kvm/arm/hypercalls.c | 71 ++++++++++++
virt/kvm/arm/mmio.c | 9 +-
virt/kvm/arm/psci.c | 84 +-------------
virt/kvm/arm/pvtime.c | 131 ++++++++++++++++++++++
virt/kvm/arm/vgic/vgic-init.c | 1 +
virt/kvm/arm/vgic/vgic-its.c | 3 +
virt/kvm/arm/vgic/vgic-v3.c | 12 +-
virt/kvm/arm/vgic/vgic-v4.c | 59 +++++-----
virt/kvm/arm/vgic/vgic.c | 4 -
virt/kvm/arm/vgic/vgic.h | 2 -
virt/kvm/kvm_main.c | 6 +-
50 files changed, 968 insertions(+), 225 deletions(-)
create mode 100644 Documentation/virt/kvm/arm/pvtime.rst
create mode 100644 arch/arm64/include/asm/pvclock-abi.h
create mode 100644 include/kvm/arm_hypercalls.h
create mode 100644 virt/kvm/arm/hypercalls.c
create mode 100644 virt/kvm/arm/pvtime.c