Hi Paolo,
Here's the bulk of KVM/arm64 updates for 5.18. For this time, a bunch
of work has gone into the MMU side of things with a new VMID allocator
and better scalability of the MM locking when tracking dirty pages,
better debug emulation, new PSCI version, more selftests, and the
usual bunch of cleanups all over the map.
Please pull,
M.
The following changes since commit dfd42facf1e4ada021b939b4e19c935dcdd55566:
Linux 5.17-rc3 (2022-02-06 12:20:50 -0800)
are available in the Git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git tags/kvmarm-5.18
for you to fetch changes up to 21ea457842759a236eefed2cfaa8cc7e5dc967a0:
KVM: arm64: fix typos in comments (2022-03-18 14:04:15 +0000)
----------------------------------------------------------------
KVM/arm64 updates for 5.18
- Proper emulation of the OSLock feature of the debug architecture
- Scalibility improvements for the MMU lock when dirty logging is on
- New VMID allocator, which will eventually help with SVA in VMs
- Better support for PMUs in heterogenous systems
- PSCI 1.1 support, enabling support for SYSTEM_RESET2
- Implement CONFIG_DEBUG_LIST at EL2
- Make CONFIG_ARM64_ERRATUM_2077057 default y
- Reduce the overhead of VM exit when no interrupt is pending
- Remove traces of 32bit ARM host support from the documentation
- Updated vgic selftests
- Various cleanups, doc updates and spelling fixes
----------------------------------------------------------------
Alexandru Elisei (4):
perf: Fix wrong name in comment for struct perf_cpu_context
KVM: arm64: Keep a list of probed PMUs
KVM: arm64: Add KVM_ARM_VCPU_PMU_V3_SET_PMU attribute
KVM: arm64: Refuse to run VCPU if the PMU doesn't match the physical CPU
Changcheng Deng (1):
KVM: arm64: Remove unneeded semicolons
Jing Zhang (3):
KVM: arm64: Use read/write spin lock for MMU protection
KVM: arm64: Add fast path to handle permission relaxation during dirty logging
KVM: selftests: Add vgic initialization for dirty log perf test for ARM
Julia Lawall (1):
KVM: arm64: fix typos in comments
Julien Grall (1):
KVM: arm64: Align the VMID allocation with the arm64 ASID
Keir Fraser (1):
KVM: arm64: pkvm: Implement CONFIG_DEBUG_LIST at EL2
Marc Zyngier (14):
Merge branch kvm-arm64/oslock into kvmarm-master/next
Merge branch kvm-arm64/mmu-rwlock into kvmarm-master/next
Merge branch kvm-arm64/fpsimd-doc into kvmarm-master/next
Merge branch kvm-arm64/vmid-allocator into kvmarm-master/next
Merge branch kvm-arm64/selftest/vgic-5.18 into kvmarm-master/next
Merge branch kvm-arm64/misc-5.18 into kvmarm-master/next
KVM: arm64: Do not change the PMU event filter after a VCPU has run
KVM: arm64: Keep a per-VM pointer to the default PMU
Merge branch kvm-arm64/pmu-bl into kvmarm-master/next
Merge branch kvm-arm64/psci-1.1 into kvmarm-master/next
KVM: arm64: Only open the interrupt window on exit due to an interrupt
Merge branch kvm-arm64/misc-5.18 into kvmarm-master/next
Merge branch kvm-arm64/psci-1.1 into kvmarm-master/next
KVM: arm64: Generalise VM features into a set of flags
Mark Brown (4):
KVM: arm64: Add comments for context flush and sync callbacks
KVM: arm64: Add some more comments in kvm_hyp_handle_fpsimd()
arm64/fpsimd: Clarify the purpose of using last in fpsimd_save()
KVM: arm64: Enable Cortex-A510 erratum 2077057 by default
Oliver Upton (8):
KVM: arm64: Correctly treat writes to OSLSR_EL1 as undefined
KVM: arm64: Stash OSLSR_EL1 in the cpu context
KVM: arm64: Allow guest to set the OSLK bit
KVM: arm64: Emulate the OS Lock
selftests: KVM: Add OSLSR_EL1 to the list of blessed regs
selftests: KVM: Test OS lock behavior
KVM: arm64: Drop unused param from kvm_psci_version()
Documentation: KVM: Update documentation to indicate KVM is arm64-only
Ricardo Koller (5):
kvm: selftests: aarch64: fix assert in gicv3_access_reg
kvm: selftests: aarch64: pass vgic_irq guest args as a pointer
kvm: selftests: aarch64: fix the failure check in kvm_set_gsi_routing_irqchip_check
kvm: selftests: aarch64: fix some vgic related comments
kvm: selftests: aarch64: use a tighter assert in vgic_poke_irq()
Shameer Kolothum (3):
KVM: arm64: Introduce a new VMID allocator for KVM
KVM: arm64: Make VMID bits accessible outside of allocator
KVM: arm64: Make active_vmids invalid on vCPU schedule out
Will Deacon (4):
KVM: arm64: Bump guest PSCI version to 1.1
KVM: arm64: Expose PSCI SYSTEM_RESET2 call to the guest
KVM: arm64: Indicate SYSTEM_RESET2 in kvm_run::system_event flags field
KVM: arm64: Really propagate PSCI SYSTEM_RESET2 arguments to userspace
Documentation/virt/kvm/api.rst | 92 +++++-----
Documentation/virt/kvm/devices/vcpu.rst | 36 +++-
arch/arm64/Kconfig | 1 +
arch/arm64/include/asm/kvm_host.h | 45 ++++-
arch/arm64/include/asm/kvm_mmu.h | 4 +-
arch/arm64/include/asm/sysreg.h | 8 +
arch/arm64/include/uapi/asm/kvm.h | 11 ++
arch/arm64/kernel/fpsimd.c | 8 +-
arch/arm64/kernel/image-vars.h | 3 +
arch/arm64/kvm/Makefile | 2 +-
arch/arm64/kvm/arm.c | 142 +++++----------
arch/arm64/kvm/debug.c | 26 ++-
arch/arm64/kvm/fpsimd.c | 14 +-
arch/arm64/kvm/guest.c | 2 +-
arch/arm64/kvm/handle_exit.c | 2 +-
arch/arm64/kvm/hyp/include/hyp/switch.h | 4 +
arch/arm64/kvm/hyp/nvhe/Makefile | 3 +-
arch/arm64/kvm/hyp/nvhe/list_debug.c | 54 ++++++
arch/arm64/kvm/hyp/nvhe/mem_protect.c | 3 +-
arch/arm64/kvm/hyp/nvhe/page_alloc.c | 4 +-
arch/arm64/kvm/hyp/nvhe/stub.c | 22 ---
arch/arm64/kvm/mmio.c | 3 +-
arch/arm64/kvm/mmu.c | 52 +++---
arch/arm64/kvm/pmu-emul.c | 141 +++++++++++----
arch/arm64/kvm/psci.c | 66 +++++--
arch/arm64/kvm/sys_regs.c | 74 ++++++--
arch/arm64/kvm/vgic/vgic.c | 2 +-
arch/arm64/kvm/vmid.c | 196 +++++++++++++++++++++
include/kvm/arm_pmu.h | 5 +
include/kvm/arm_psci.h | 9 +-
include/linux/perf_event.h | 2 +-
include/uapi/linux/psci.h | 4 +
tools/arch/arm64/include/uapi/asm/kvm.h | 1 +
.../selftests/kvm/aarch64/debug-exceptions.c | 58 +++++-
tools/testing/selftests/kvm/aarch64/get-reg-list.c | 1 +
tools/testing/selftests/kvm/aarch64/vgic_irq.c | 45 +++--
tools/testing/selftests/kvm/dirty_log_perf_test.c | 10 ++
tools/testing/selftests/kvm/lib/aarch64/gic_v3.c | 12 +-
tools/testing/selftests/kvm/lib/aarch64/vgic.c | 9 +-
39 files changed, 865 insertions(+), 311 deletions(-)
create mode 100644 arch/arm64/kvm/hyp/nvhe/list_debug.c
delete mode 100644 arch/arm64/kvm/hyp/nvhe/stub.c
create mode 100644 arch/arm64/kvm/vmid.c
