Hi Paolo and Radim,
Here are the changes for KVM/ARM for v4.12 so far. I may send another
pull request next week with the ITS save/restore patches if we feel they
are ready. The ABI part of the ITS save/restore patches has matured for
a while so we just need to make sure on the implementation bits.
Note that this pull request shares a common base branch with the arm64
tree which has already been pulled by the arm64 folks into their
for-next/core branch.
As for these changes, they include:
- Using the common sysreg definitions between KVM and arm64
- Improved hyp-stub implementation with support for kexec and kdump on the 32-bit side
- Proper PMU exception handling
- Performance improvements of our GIC handling
- Support for irqchip in userspace with in-kernel arch-timers and PMU support
- A fix for a race condition in our PSCI code
The following changes since commit 97da3854c526d3a6ee05c849c96e48d21527606c:
Linux 4.11-rc3 (2017-03-19 19:09:39 -0700)
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git kvm-arm-for-v4.12
for you to fetch changes up to 1edb632133efb6226b6bef3e7d9fa8c7134ac4e2:
ARM: KVM: Fix idmap stub entry when running Thumb-2 code (2017-04-20 20:17:57 +0200)
Thanks,
-Christoffer
---
Alexander Graf (2):
KVM: arm/arm64: Add ARM user space interrupt signaling ABI
KVM: arm/arm64: Support arch timers with a userspace gic
Andrew Jones (1):
KVM: arm/arm64: fix races in kvm_psci_vcpu_on
Christoffer Dall (12):
KVM: arm/arm64: vgic: Defer touching GICH_VMCR to vcpu_load/put
KVM: arm/arm64: vgic: Get rid of live_lrs
KVM: arm/arm64: vgic: Only set underflow when actually out of LRs
KVM: arm/arm64: vgic: Get rid of unnecessary process_maintenance
operation
KVM: arm/arm64: vgic: Get rid of unnecessary save_maint_int_state
KVM: arm/arm64: vgic: Get rid of MISR and EISR fields
KVM: arm/arm64: vgic: Implement early VGIC init functionality
KVM: arm/arm64: vgic: Don't check vgic_initialized in sync/flush
KVM: arm/arm64: vgic: Improve sync_hwstate performance
KVM: arm/arm64: Cleanup the arch timer code's irqchip checking
KVM: arm/arm64: Report PMU overflow interrupts to userspace irqchip
KVM: arm/arm64: Advertise support for KVM_CAP_ARM_USER_IRQ
Marc Zyngier (45):
arm64: KVM: PMU: Refactor pmu_*_el0_disabled
arm64: KVM: PMU: Inject UNDEF exception on illegal register access
arm64: KVM: PMU: Inject UNDEF on non-privileged accesses
arm64: KVM: Make unexpected reads from WO registers inject an undef
arm64: KVM: PMU: Inject UNDEF on read access to PMSWINC_EL0
arm64: KVM: Treat sysreg accessors returning false as successful
arm64: KVM: Do not corrupt registers on failed 64bit CP read
arm: KVM: Make unexpected register accesses inject an undef
arm: KVM: Treat CP15 accessors returning false as successful
arm64: hyp-stub: Stop pointlessly clobbering lr
arm64: KVM: Move lr save/restore to do_el2_call
arm64: hyp-stub: Don't save lr in the EL1 code
arm64: hyp-stub: Define a return value for failed stub calls
arm64: hyp-stub: Update documentation in asm/virt.h
arm64: hyp-stub: Implement HVC_RESET_VECTORS stub hypercall
arm64: KVM: Implement HVC_RESET_VECTORS stub hypercall in the init
code
arm64: KVM: Implement HVC_GET_VECTORS in the init code
arm64: KVM: Allow the main HYP code to use the init hyp stub
implementation
arm64: KVM: Convert __cpu_reset_hyp_mode to using __hyp_reset_vectors
arm64: KVM: Implement HVC_SOFT_RESTART in the init code
ARM: KVM: Convert KVM to use HVC_GET_VECTORS
ARM: Update cpu_v7_reset documentation
ARM: hyp-stub: Use r1 for the soft-restart address
ARM: Expose the VA/IDMAP offset
ARM: hyp-stub: Define a return value for failed stub calls
ARM: hyp-stub: Implement HVC_RESET_VECTORS stub hypercall
ARM: KVM: Implement HVC_RESET_VECTORS stub hypercall in the init code
ARM: KVM: Implement HVC_GET_VECTORS in the init code
ARM: KVM: Allow the main HYP code to use the init hyp stub
implementation
ARM: KVM: Convert __cpu_reset_hyp_mode to using __hyp_reset_vectors
ARM: KVM: Implement HVC_SOFT_RESTART in the init code
ARM: KVM: Gracefully handle hyp-stubs being restored from under our
feet
arm/arm64: KVM: Use __hyp_reset_vectors() directly
arm/arm64: KVM: Remove kvm_get_idmap_start
arm/arm64: KVM: Use HVC_RESET_VECTORS to reinit HYP mode
ARM: decompressor: Remove __hyp_get_vectors usage
ARM: hyp-stub/KVM: Kill __hyp_get_vectors
arm64: hyp-stub/KVM: Kill __hyp_get_vectors
arm64: hyp-stub: Zero x0 on successful stub handling
ARM: hyp-stub: Zero r0 on successful stub handling
arm/arm64: Add hyp-stub API documentation
KVM: arm/arm64: vgic-v3: De-optimize VMCR save/restore when emulating
a GICv2
KVM: arm/arm64: vgic-v3: Fix off-by-one LR access
ARM: hyp-stub: Fix Thumb-2 compilation
ARM: KVM: Fix idmap stub entry when running Thumb-2 code
Mark Rutland (15):
arm64: sysreg: sort by encoding
arm64: sysreg: add debug system registers
arm64: sysreg: add performance monitor registers
arm64: sysreg: subsume GICv3 sysreg definitions
arm64: sysreg: add physical timer registers
arm64: sysreg: add register encodings used by KVM
arm64: sysreg: add Set/Way sys encodings
KVM: arm64: add SYS_DESC()
KVM: arm64: Use common debug sysreg definitions
KVM: arm64: Use common performance monitor sysreg definitions
KVM: arm64: Use common GICv3 sysreg definitions
KVM: arm64: Use common physical timer sysreg definitions
KVM: arm64: use common invariant sysreg definitions
KVM: arm64: Use common sysreg definitions
KVM: arm64: Use common Set/Way sys definitions
Russell King (2):
ARM: hyp-stub: improve ABI
ARM: soft-reboot into same mode that we entered the kernel
Shih-Wei Li (1):
KVM: arm/arm64: vgic: Avoid flushing vgic state when there's no
pending IRQ
Suzuki K Poulose (1):
kvm: arm/arm64: Rework gpa callback handlers
Documentation/virtual/kvm/api.txt | 42 +++
Documentation/virtual/kvm/arm/hyp-abi.txt | 53 ++++
arch/arm/boot/compressed/head.S | 12 +-
arch/arm/include/asm/kvm_asm.h | 7 +-
arch/arm/include/asm/kvm_host.h | 6 -
arch/arm/include/asm/kvm_mmu.h | 1 -
arch/arm/include/asm/proc-fns.h | 4 +-
arch/arm/include/asm/virt.h | 14 +-
arch/arm/include/uapi/asm/kvm.h | 2 +
arch/arm/kernel/hyp-stub.S | 43 ++-
arch/arm/kernel/reboot.c | 7 +-
arch/arm/kvm/arm.c | 66 ++--
arch/arm/kvm/coproc.c | 24 +-
arch/arm/kvm/coproc.h | 18 --
arch/arm/kvm/handle_exit.c | 8 +
arch/arm/kvm/hyp/hyp-entry.S | 28 +-
arch/arm/kvm/init.S | 51 ++-
arch/arm/kvm/interrupts.S | 4 -
arch/arm/kvm/mmu.c | 36 +--
arch/arm/kvm/psci.c | 8 +-
arch/arm/mm/mmu.c | 5 +
arch/arm/mm/proc-v7.S | 15 +-
arch/arm64/include/asm/arch_gicv3.h | 81 +----
arch/arm64/include/asm/kvm_asm.h | 5 +-
arch/arm64/include/asm/kvm_host.h | 7 -
arch/arm64/include/asm/kvm_mmu.h | 1 -
arch/arm64/include/asm/sysreg.h | 162 +++++++++-
arch/arm64/include/asm/virt.h | 31 +-
arch/arm64/include/uapi/asm/kvm.h | 2 +
arch/arm64/kernel/head.S | 8 +-
arch/arm64/kernel/hyp-stub.S | 38 +--
arch/arm64/kvm/hyp-init.S | 46 ++-
arch/arm64/kvm/hyp.S | 5 +-
arch/arm64/kvm/hyp/hyp-entry.S | 43 ++-
arch/arm64/kvm/sys_regs.c | 496 +++++++++++-------------------
arch/arm64/kvm/sys_regs.h | 23 +-
arch/arm64/kvm/sys_regs_generic_v8.c | 4 +-
include/kvm/arm_arch_timer.h | 2 +
include/kvm/arm_pmu.h | 7 +
include/kvm/arm_vgic.h | 9 +-
include/uapi/linux/kvm.h | 8 +
virt/kvm/arm/arch_timer.c | 124 ++++++--
virt/kvm/arm/hyp/vgic-v2-sr.c | 78 +----
virt/kvm/arm/hyp/vgic-v3-sr.c | 87 ++----
virt/kvm/arm/pmu.c | 39 ++-
virt/kvm/arm/vgic/vgic-init.c | 108 ++++---
virt/kvm/arm/vgic/vgic-v2.c | 90 +++---
virt/kvm/arm/vgic/vgic-v3.c | 87 +++---
virt/kvm/arm/vgic/vgic.c | 60 +++-
virt/kvm/arm/vgic/vgic.h | 8 +-
50 files changed, 1175 insertions(+), 938 deletions(-)
create mode 100644 Documentation/virtual/kvm/arm/hyp-abi.txt
