Paolo,
Here's the set of KVM/arm64 updates for 6.10. No new feature exactly,
but a lot of internal rework, improvements and bug fixes, However, it
is pretty good to see that the Android folks are resuming the
upstreaming effort after a long period of silence.
As usual, details in the tag below.
Please pull,
M.
The following changes since commit fec50db7033ea478773b159e0e2efb135270e3b7:
Linux 6.9-rc3 (2024-04-07 13:22:46 -0700)
are available in the Git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git tags/kvmarm-6.10-1
for you to fetch changes up to eaa46a28d59655aa89a8fb885affa6fc0de44376:
Merge branch kvm-arm64/mpidr-reset into kvmarm-master/next (2024-05-09 18:44:15 +0100)
----------------------------------------------------------------
KVM/arm64 updates for Linux 6.10
- Move a lot of state that was previously stored on a per vcpu
basis into a per-CPU area, because it is only pertinent to the
host while the vcpu is loaded. This results in better state
tracking, and a smaller vcpu structure.
- Add full handling of the ERET/ERETAA/ERETAB instructions in
nested virtualisation. The last two instructions also require
emulating part of the pointer authentication extension.
As a result, the trap handling of pointer authentication has
been greattly simplified.
- Turn the global (and not very scalable) LPI translation cache
into a per-ITS, scalable cache, making non directly injected
LPIs much cheaper to make visible to the vcpu.
- A batch of pKVM patches, mostly fixes and cleanups, as the
upstreaming process seems to be resuming. Fingers crossed!
- Allocate PPIs and SGIs outside of the vcpu structure, allowing
for smaller EL2 mapping and some flexibility in implementing
more or less than 32 private IRQs.
- Purge stale mpidr_data if a vcpu is created after the MPIDR
map has been created.
- Preserve vcpu-specific ID registers across a vcpu reset.
- Various minor cleanups and improvements.
----------------------------------------------------------------
Fuad Tabba (13):
KVM: arm64: Initialize the kvm host data's fpsimd_state pointer in pKVM
KVM: arm64: Move guest_owns_fp_regs() to increase its scope
KVM: arm64: Refactor checks for FP state ownership
KVM: arm64: Do not re-initialize the KVM lock
KVM: arm64: Rename __tlb_switch_to_{guest,host}() in VHE
KVM: arm64: Do not map the host fpsimd state to hyp in pKVM
KVM: arm64: Fix comment for __pkvm_vcpu_init_traps()
KVM: arm64: Change kvm_handle_mmio_return() return polarity
KVM: arm64: Move setting the page as dirty out of the critical section
KVM: arm64: Introduce and use predicates that check for protected VMs
KVM: arm64: Clarify rationale for ZCR_EL1 value restored on guest exit
KVM: arm64: Refactor setting the return value in kvm_vm_ioctl_enable_cap()
KVM: arm64: Restrict supported capabilities for protected VMs
Marc Zyngier (34):
KVM: arm64: Add accessor for per-CPU state
KVM: arm64: Exclude host_debug_data from vcpu_arch
KVM: arm64: Exclude mdcr_el2_host from kvm_vcpu_arch
KVM: arm64: Exclude host_fpsimd_state pointer from kvm_vcpu_arch
KVM: arm64: Exclude FP ownership from kvm_vcpu_arch
KVM: arm64: Improve out-of-order sysreg table diagnostics
KVM: arm64: Harden __ctxt_sys_reg() against out-of-range values
KVM: arm64: Add helpers for ESR_ELx_ERET_ISS_ERET*
KVM: arm64: Constraint PAuth support to consistent implementations
KVM: arm64: nv: Drop VCPU_HYP_CONTEXT flag
KVM: arm64: nv: Configure HCR_EL2 for FEAT_NV2
KVM: arm64: nv: Add trap forwarding for ERET and SMC
KVM: arm64: nv: Fast-track 'InHost' exception returns
KVM: arm64: nv: Honor HFGITR_EL2.ERET being set
KVM: arm64: nv: Handle HCR_EL2.{API,APK} independently
KVM: arm64: nv: Reinject PAC exceptions caused by HCR_EL2.API==0
KVM: arm64: nv: Add kvm_has_pauth() helper
KVM: arm64: nv: Add emulation for ERETAx instructions
KVM: arm64: nv: Handle ERETA[AB] instructions
KVM: arm64: nv: Advertise support for PAuth
KVM: arm64: Drop trapping of PAuth instructions/keys
KVM: arm64: nv: Work around lack of pauth support in old toolchains
KVM: arm64: Check for PTE validity when checking for executable/cacheable
KVM: arm64: Simplify vgic-v3 hypercalls
KVM: arm64: Force injection of a data abort on NISV MMIO exit
KVM: arm64: vgic: Allocate private interrupts on demand
KVM: arm64: Convert kvm_mpidr_index() to bitmap_gather()
KVM: arm64: Move management of __hyp_running_vcpu to load/put on VHE
Merge branch kvm-arm64/host_data into kvmarm-master/next
Merge branch kvm-arm64/nv-eret-pauth into kvmarm-master/next
Merge branch kvm-arm64/lpi-xa-cache into kvmarm-master/next
Merge branch kvm-arm64/pkvm-6.10 into kvmarm-master/next
Merge branch kvm-arm64/misc-6.10 into kvmarm-master/next
Merge branch kvm-arm64/mpidr-reset into kvmarm-master/next
Oliver Upton (27):
KVM: Treat the device list as an rculist
KVM: arm64: vgic-its: Walk LPI xarray in its_sync_lpi_pending_table()
KVM: arm64: vgic-its: Walk LPI xarray in vgic_its_invall()
KVM: arm64: vgic-its: Walk LPI xarray in vgic_its_cmd_handle_movall()
KVM: arm64: vgic-debug: Use an xarray mark for debug iterator
KVM: arm64: vgic-its: Get rid of vgic_copy_lpi_list()
KVM: arm64: vgic-its: Scope translation cache invalidations to an ITS
KVM: arm64: vgic-its: Maintain a translation cache per ITS
KVM: arm64: vgic-its: Spin off helper for finding ITS by doorbell addr
KVM: arm64: vgic-its: Use the per-ITS translation cache for injection
KVM: arm64: vgic-its: Rip out the global translation cache
KVM: arm64: vgic-its: Get rid of the lpi_list_lock
KVM: selftests: Align with kernel's GIC definitions
KVM: selftests: Standardise layout of GIC frames
KVM: selftests: Add quadword MMIO accessors
KVM: selftests: Add a minimal library for interacting with an ITS
KVM: selftests: Add helper for enabling LPIs on a redistributor
KVM: selftests: Use MPIDR_HWID_BITMASK from cputype.h
KVM: selftests: Add stress test for LPI injection
KVM: arm64: Destroy mpidr_data for 'late' vCPU creation
KVM: arm64: Rename is_id_reg() to imply VM scope
KVM: arm64: Reset VM feature ID regs from kvm_reset_sys_regs()
KVM: arm64: Only reset vCPU-scoped feature ID regs once
KVM: selftests: arm64: Rename helper in set_id_regs to imply VM scope
KVM: selftests: arm64: Store expected register value in set_id_regs
KVM: selftests: arm64: Test that feature ID regs survive a reset
KVM: selftests: arm64: Test vCPU-scoped feature ID registers
Quentin Perret (4):
KVM: arm64: Issue CMOs when tearing down guest s2 pages
KVM: arm64: Avoid BUG-ing from the host abort path
KVM: arm64: Prevent kmemleak from accessing .hyp.data
KVM: arm64: Add is_pkvm_initialized() helper
Russell King (1):
KVM: arm64: Remove duplicated AA64MMFR1_EL1 XNX
Sebastian Ene (1):
KVM: arm64: Remove FFA_MSG_SEND_DIRECT_REQ from the denylist
Will Deacon (7):
KVM: arm64: Avoid BBM when changing only s/w bits in Stage-2 PTE
KVM: arm64: Support TLB invalidation in guest context
KVM: arm64: Reformat/beautify PTP hypercall documentation
KVM: arm64: Rename firmware pseudo-register documentation file
KVM: arm64: Document the KVM/arm64-specific calls in hypercalls.rst
KVM: arm64: Fix hvhe/nvhe early alias parsing
KVM: arm64: Use hVHE in pKVM by default on CPUs with VHE support
Documentation/virt/kvm/api.rst | 7 +
Documentation/virt/kvm/arm/fw-pseudo-registers.rst | 138 +++++
Documentation/virt/kvm/arm/hypercalls.rst | 180 ++-----
Documentation/virt/kvm/arm/index.rst | 1 +
Documentation/virt/kvm/arm/ptp_kvm.rst | 38 +-
arch/arm64/include/asm/esr.h | 12 +
arch/arm64/include/asm/kvm_asm.h | 8 +-
arch/arm64/include/asm/kvm_emulate.h | 16 +-
arch/arm64/include/asm/kvm_host.h | 156 ++++--
arch/arm64/include/asm/kvm_hyp.h | 4 +-
arch/arm64/include/asm/kvm_nested.h | 13 +
arch/arm64/include/asm/kvm_ptrauth.h | 21 +
arch/arm64/include/asm/pgtable-hwdef.h | 1 +
arch/arm64/include/asm/virt.h | 12 +-
arch/arm64/kernel/pi/idreg-override.c | 4 +-
arch/arm64/kvm/Makefile | 1 +
arch/arm64/kvm/arm.c | 209 ++++++--
arch/arm64/kvm/emulate-nested.c | 66 ++-
arch/arm64/kvm/fpsimd.c | 69 ++-
arch/arm64/kvm/handle_exit.c | 36 +-
arch/arm64/kvm/hyp/include/hyp/debug-sr.h | 8 +-
arch/arm64/kvm/hyp/include/hyp/switch.h | 86 +--
arch/arm64/kvm/hyp/include/nvhe/pkvm.h | 6 +
arch/arm64/kvm/hyp/nvhe/debug-sr.c | 8 +-
arch/arm64/kvm/hyp/nvhe/ffa.c | 1 -
arch/arm64/kvm/hyp/nvhe/hyp-main.c | 27 +-
arch/arm64/kvm/hyp/nvhe/mem_protect.c | 8 +-
arch/arm64/kvm/hyp/nvhe/pkvm.c | 14 +-
arch/arm64/kvm/hyp/nvhe/psci-relay.c | 2 +-
arch/arm64/kvm/hyp/nvhe/setup.c | 4 +-
arch/arm64/kvm/hyp/nvhe/switch.c | 18 +-
arch/arm64/kvm/hyp/nvhe/tlb.c | 115 +++-
arch/arm64/kvm/hyp/pgtable.c | 21 +-
arch/arm64/kvm/hyp/vgic-v3-sr.c | 27 +-
arch/arm64/kvm/hyp/vhe/switch.c | 109 +++-
arch/arm64/kvm/hyp/vhe/sysreg-sr.c | 4 +-
arch/arm64/kvm/hyp/vhe/tlb.c | 26 +-
arch/arm64/kvm/mmio.c | 12 +-
arch/arm64/kvm/mmu.c | 8 +-
arch/arm64/kvm/nested.c | 8 +-
arch/arm64/kvm/pauth.c | 206 ++++++++
arch/arm64/kvm/pkvm.c | 2 +-
arch/arm64/kvm/pmu.c | 2 +-
arch/arm64/kvm/reset.c | 1 -
arch/arm64/kvm/sys_regs.c | 69 ++-
arch/arm64/kvm/vgic/vgic-debug.c | 82 ++-
arch/arm64/kvm/vgic/vgic-init.c | 90 +++-
arch/arm64/kvm/vgic/vgic-its.c | 352 ++++---------
arch/arm64/kvm/vgic/vgic-mmio-v3.c | 2 +-
arch/arm64/kvm/vgic/vgic-v2.c | 9 +-
arch/arm64/kvm/vgic/vgic-v3.c | 23 +-
arch/arm64/kvm/vgic/vgic.c | 17 +-
arch/arm64/kvm/vgic/vgic.h | 8 +-
include/kvm/arm_vgic.h | 16 +-
tools/testing/selftests/kvm/Makefile | 2 +
tools/testing/selftests/kvm/aarch64/arch_timer.c | 8 +-
tools/testing/selftests/kvm/aarch64/psci_test.c | 2 +
tools/testing/selftests/kvm/aarch64/set_id_regs.c | 123 ++++-
tools/testing/selftests/kvm/aarch64/vgic_irq.c | 15 +-
.../selftests/kvm/aarch64/vgic_lpi_stress.c | 410 ++++++++++++++
.../selftests/kvm/aarch64/vpmu_counter_access.c | 6 +-
tools/testing/selftests/kvm/dirty_log_perf_test.c | 5 +-
tools/testing/selftests/kvm/include/aarch64/gic.h | 21 +-
.../testing/selftests/kvm/include/aarch64/gic_v3.h | 586 +++++++++++++++++++--
.../selftests/kvm/include/aarch64/gic_v3_its.h | 19 +
.../selftests/kvm/include/aarch64/processor.h | 19 +-
tools/testing/selftests/kvm/include/aarch64/vgic.h | 5 +-
tools/testing/selftests/kvm/lib/aarch64/gic.c | 18 +-
.../selftests/kvm/lib/aarch64/gic_private.h | 4 +-
tools/testing/selftests/kvm/lib/aarch64/gic_v3.c | 99 ++--
.../testing/selftests/kvm/lib/aarch64/gic_v3_its.c | 248 +++++++++
tools/testing/selftests/kvm/lib/aarch64/vgic.c | 38 +-
virt/kvm/kvm_main.c | 14 +-
virt/kvm/vfio.c | 2 +
74 files changed, 2971 insertions(+), 1056 deletions(-)
create mode 100644 Documentation/virt/kvm/arm/fw-pseudo-registers.rst
create mode 100644 arch/arm64/kvm/pauth.c
create mode 100644 tools/testing/selftests/kvm/aarch64/vgic_lpi_stress.c
create mode 100644 tools/testing/selftests/kvm/include/aarch64/gic_v3_its.h
create mode 100644 tools/testing/selftests/kvm/lib/aarch64/gic_v3_its.c
