[GIT PULL] First batch of KVM changes for Linux 5.16

From: Paolo Bonzini
Date: Tue Nov 02 2021 - 12:53:55 EST

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Linus,

The following changes since commit 8228c77d8b56e3f735baf71fefb1b548c23691a7:

KVM: x86: switch pvclock_gtod_sync_lock to a raw spinlock (2021-10-25 08:14:38 -0400)

are available in the Git repository at:

https://git.kernel.org/pub/scm/virt/kvm/kvm.git tags/for-linus

for you to fetch changes up to 52cf891d8dbd7592261fa30f373410b97f22b76c:

Merge tag 'kvm-riscv-5.16-2' of https://github.com/kvm-riscv/linux into HEAD (2021-11-02 09:15:31 -0400)

----------------------------------------------------------------
ARM:
* More progress on the protected VM front, now with the full
fixed feature set as well as the limitation of some hypercalls
after initialisation.

* Cleanup of the RAZ/WI sysreg handling, which was pointlessly
complicated

* Fixes for the vgic placement in the IPA space, together with a
bunch of selftests

* More memcg accounting of the memory allocated on behalf of a guest

* Timer and vgic selftests

* Workarounds for the Apple M1 broken vgic implementation

* KConfig cleanups

* New kvmarm.mode=none option, for those who really dislike us

RISC-V:
* New KVM port.

x86:
* New API to control TSC offset from userspace

* TSC scaling for nested hypervisors on SVM

* Switch masterclock protection from raw_spin_lock to seqcount

* Clean up function prototypes in the page fault code and avoid
repeated memslot lookups

* Convey the exit reason to userspace on emulation failure

* Configure time between NX page recovery iterations

* Expose Predictive Store Forwarding Disable CPUID leaf

* Allocate page tracking data structures lazily (if the i915
KVM-GT functionality is not compiled in)

* Cleanups, fixes and optimizations for the shadow MMU code

s390:
* SIGP Fixes

* initial preparations for lazy destroy of secure VMs

* storage key improvements/fixes

* Log the guest CPNC

Starting from this release, KVM-PPC patches will come from
Michael Ellerman's PPC tree.

----------------------------------------------------------------
There is a trivial Kconfig conflict in arch/riscv, and a slightly
less trivial conflict with Thomas's x86 FPU rework. The latter is
due to fx_init going away in my tree (long before Thomas started his
work, or I would have synchronized better). The conflict resolution
is at the bottom of this email.

Alexandru Elisei (4):
KVM: arm64: Return early from read_id_reg() if register is RAZ
KVM: arm64: Use get_raz_reg() for userspace reads of PMSWINC_EL0
KVM: arm64: Replace get_raz_id_reg() with get_raz_reg()
Documentation: admin-guide: Document side effects when pKVM is enabled

Andrei Vagin (1):
KVM: x86/mmu: kvm_faultin_pfn has to return false if pfh is returned

Anup Patel (15):
RISC-V: Add hypervisor extension related CSR defines
RISC-V: Add initial skeletal KVM support
RISC-V: KVM: Implement VCPU create, init and destroy functions
RISC-V: KVM: Implement VCPU interrupts and requests handling
RISC-V: KVM: Implement KVM_GET_ONE_REG/KVM_SET_ONE_REG ioctls
RISC-V: KVM: Implement VCPU world-switch
RISC-V: KVM: Handle MMIO exits for VCPU
RISC-V: KVM: Handle WFI exits for VCPU
RISC-V: KVM: Implement VMID allocator
RISC-V: KVM: Implement stage2 page table programming
RISC-V: KVM: Implement MMU notifiers
RISC-V: KVM: Document RISC-V specific parts of KVM API
RISC-V: KVM: Add MAINTAINERS entry
RISC-V: KVM: Factor-out FP virtualization into separate sources
RISC-V: KVM: Fix GPA passed to __kvm_riscv_hfence_gvma_xyz() functions

Atish Patra (4):
RISC-V: KVM: Add timer functionality
RISC-V: KVM: FP lazy save/restore
RISC-V: KVM: Implement ONE REG interface for FP registers
RISC-V: KVM: Add SBI v0.1 support

Babu Moger (1):
KVM: x86: Expose Predictive Store Forwarding Disable

Bixuan Cui (1):
RISC-V: KVM: fix boolreturn.cocci warnings

Claudio Imbrenda (5):
KVM: s390: pv: add macros for UVC CC values
KVM: s390: pv: avoid double free of sida page
KVM: s390: pv: avoid stalls for kvm_s390_pv_init_vm
KVM: s390: pv: avoid stalls when making pages secure
KVM: s390: pv: properly handle page flags for protected guests

Colin Ian King (1):
kvm: selftests: Fix spelling mistake "missmatch" -> "mismatch"

Collin Walling (1):
KVM: s390: add debug statement for diag 318 CPNC data

David Edmondson (4):
KVM: x86: Clarify the kvm_run.emulation_failure structure layout
KVM: x86: Get exit_reason as part of kvm_x86_ops.get_exit_info
KVM: x86: On emulation failure, convey the exit reason, etc. to userspace
KVM: x86: SGX must obey the KVM_INTERNAL_ERROR_EMULATION protocol

David Hildenbrand (8):
s390/gmap: validate VMA in __gmap_zap()
s390/gmap: don't unconditionally call pte_unmap_unlock() in __gmap_zap()
s390/mm: validate VMA in PGSTE manipulation functions
s390/mm: fix VMA and page table handling code in storage key handling functions
s390/uv: fully validate the VMA before calling follow_page()
s390/mm: no need for pte_alloc_map_lock() if we know the pmd is present
s390/mm: optimize set_guest_storage_key()
s390/mm: optimize reset_guest_reference_bit()

David Matlack (6):
KVM: x86/mmu: Fold rmap_recycle into rmap_add
KVM: x86/mmu: Pass the memslot around via struct kvm_page_fault
KVM: x86/mmu: Avoid memslot lookup in page_fault_handle_page_track
KVM: x86/mmu: Avoid memslot lookup in rmap_add
KVM: x86/mmu: Avoid memslot lookup in make_spte and mmu_try_to_unsync_pages
KVM: x86/mmu: Rename slot_handle_leaf to slot_handle_level_4k

David Stevens (3):
KVM: x86: add config for non-kvm users of page tracking
KVM: x86: only allocate gfn_track when necessary
KVM: cleanup allocation of rmaps and page tracking data

Eric Farman (2):
KVM: s390: Simplify SIGP Set Arch handling
KVM: s390: Add a routine for setting userspace CPU state

Fuad Tabba (8):
KVM: arm64: Pass struct kvm to per-EC handlers
KVM: arm64: Add missing field descriptor for MDCR_EL2
KVM: arm64: Simplify masking out MTE in feature id reg
KVM: arm64: Add handlers for protected VM System Registers
KVM: arm64: Initialize trap registers for protected VMs
KVM: arm64: Move sanitized copies of CPU features
KVM: arm64: Trap access to pVM restricted features
KVM: arm64: Handle protected guests at 32 bits

Janis Schoetterl-Glausch (1):
KVM: s390: Fix handle_sske page fault handling

Jia He (2):
KVM: arm64: vgic: Add memcg accounting to vgic allocations
KVM: arm64: Add memcg accounting to KVM allocations

Jim Mattson (2):
kvm: x86: Remove stale declaration of kvm_no_apic_vcpu
KVM: selftests: Fix nested SVM tests when built with clang

Juergen Gross (3):
Revert "x86/kvm: fix vcpu-id indexed array sizes"
kvm: rename KVM_MAX_VCPU_ID to KVM_MAX_VCPU_IDS
kvm: use kvfree() in kvm_arch_free_vm()

Junaid Shahid (1):
kvm: x86: mmu: Make NX huge page recovery period configurable

Krish Sadhukhan (1):
nSVM: Check for reserved encodings of TLB_CONTROL in nested VMCB

Lai Jiangshan (14):
KVM: X86: Don't flush current tlb on shadow page modification
KVM: X86: Remove kvm_mmu_flush_or_zap()
KVM: X86: Change kvm_sync_page() to return true when remote flush is needed
KVM: X86: Zap the invalid list after remote tlb flushing
KVM: X86: Remove FNAME(update_pte)
KVM: X86: Don't unsync pagetables when speculative
KVM: X86: Don't check unsync if the original spte is writible
KVM: X86: Move PTE present check from loop body to __shadow_walk_next()
KVM: X86: Don't reset mmu context when X86_CR4_PCIDE 1->0
KVM: X86: Don't reset mmu context when toggling X86_CR4_PGE
KVM: X86: Fix tlb flush for tdp in kvm_invalidate_pcid()
KVM: X86: Cache CR3 in prev_roots when PCID is disabled
KVM: X86: pair smp_wmb() of mmu_try_to_unsync_pages() with smp_rmb()
KVM: X86: Don't unload MMU in kvm_vcpu_flush_tlb_guest()

Longpeng(Mike) (1):
kvm: irqfd: avoid update unmodified entries of the routing

Lukas Bulwahn (1):
riscv: do not select non-existing config ANON_INODES

Marc Zyngier (33):
KVM: arm64: Turn __KVM_HOST_SMCCC_FUNC_* into an enum (mostly)
Merge branch kvm-arm64/pkvm/restrict-hypercalls into kvmarm-master/next
Merge branch kvm-arm64/vgic-ipa-checks into kvmarm-master/next
KVM: arm64: Allow KVM to be disabled from the command line
Merge branch kvm-arm64/misc-5.16 into kvmarm-master/next
Merge branch kvm-arm64/raz-sysregs into kvmarm-master/next
KVM: arm64: Move __get_fault_info() and co into their own include file
KVM: arm64: Don't include switch.h into nvhe/kvm-main.c
KVM: arm64: Move early handlers to per-EC handlers
Merge branch kvm-arm64/pkvm/restrict-hypercalls into kvmarm-master/next
KVM: arm64: Fix reporting of endianess when the access originates at EL0
Merge branch kvm-arm64/misc-5.16 into kvmarm-master/next
KVM: arm64: Force ID_AA64PFR0_EL1.GIC=1 when exposing a virtual GICv3
KVM: arm64: vgic-v3: Work around GICv3 locally generated SErrors
KVM: arm64: vgic-v3: Reduce common group trapping to ICV_DIR_EL1 when possible
KVM: arm64: vgic-v3: Don't advertise ICC_CTLR_EL1.SEIS
KVM: arm64: vgic-v3: Align emulated cpuif LPI state machine with the pseudocode
Merge branch kvm-arm64/vgic-fixes-5.16 into kvmarm-master/next
Merge branch kvm-arm64/selftest/timer into kvmarm-master/next
Merge branch kvm-arm64/memory-accounting into kvmarm-master/next
KVM: arm64: Fix early exit ptrauth handling
KVM: arm64: pkvm: Use a single function to expose all id-regs
KVM: arm64: pkvm: Make the ERR/ERX*_EL1 registers RAZ/WI
KVM: arm64: pkvm: Drop AArch32-specific registers
KVM: arm64: pkvm: Drop sysregs that should never be routed to the host
KVM: arm64: pkvm: Handle GICv3 traps as required
KVM: arm64: pkvm: Preserve pending SError on exit from AArch32
KVM: arm64: pkvm: Consolidate include files
KVM: arm64: pkvm: Move kvm_handle_pvm_restricted around
KVM: arm64: pkvm: Pass vpcu instead of kvm to kvm_get_exit_handler_array()
KVM: arm64: pkvm: Give priority to standard traps over pvm handling
Merge branch kvm-arm64/pkvm/fixed-features into kvmarm-master/next
Merge branch kvm/selftests/memslot into kvmarm-master/next

Maxim Levitsky (4):
KVM: x86: nSVM: don't copy pause related settings
KVM: x86: SVM: add module param to control LBR virtualization
KVM: x86: SVM: add module param to control TSC scaling
KVM: x86: nSVM: implement nested TSC scaling

Michael Roth (1):
KVM: selftests: set CPUID before setting sregs in vcpu creation

Oliver Upton (9):
KVM: x86: Fix potential race in KVM_GET_CLOCK
KVM: x86: Report host tsc and realtime values in KVM_GET_CLOCK
KVM: x86: Refactor tsc synchronization code
KVM: x86: Expose TSC offset controls to userspace
tools: arch: x86: pull in pvclock headers
selftests: KVM: Add test for KVM_{GET,SET}_CLOCK
selftests: KVM: Fix kvm device helper ioctl assertions
selftests: KVM: Add helpers for vCPU device attributes
selftests: KVM: Introduce system counter offset test

Paolo Bonzini (36):
KVM: x86: SVM: don't set VMLOAD/VMSAVE intercepts on vCPU reset
kvm: x86: abstract locking around pvclock_update_vm_gtod_copy
KVM: x86: extract KVM_GET_CLOCK/KVM_SET_CLOCK to separate functions
KVM: MMU: pass unadulterated gpa to direct_page_fault
KVM: MMU: Introduce struct kvm_page_fault
KVM: MMU: change mmu->page_fault() arguments to kvm_page_fault
KVM: MMU: change direct_page_fault() arguments to kvm_page_fault
KVM: MMU: change page_fault_handle_page_track() arguments to kvm_page_fault
KVM: MMU: change kvm_faultin_pfn() arguments to kvm_page_fault
KVM: MMU: change handle_abnormal_pfn() arguments to kvm_page_fault
KVM: MMU: change __direct_map() arguments to kvm_page_fault
KVM: MMU: change FNAME(fetch)() arguments to kvm_page_fault
KVM: MMU: change kvm_tdp_mmu_map() arguments to kvm_page_fault
KVM: MMU: change tdp_mmu_map_handle_target_level() arguments to kvm_page_fault
KVM: MMU: change fast_page_fault() arguments to kvm_page_fault
KVM: MMU: change kvm_mmu_hugepage_adjust() arguments to kvm_page_fault
KVM: MMU: change disallowed_hugepage_adjust() arguments to kvm_page_fault
KVM: MMU: change tracepoints arguments to kvm_page_fault
KVM: MMU: mark page dirty in make_spte
KVM: MMU: unify tdp_mmu_map_set_spte_atomic and tdp_mmu_set_spte_atomic_no_dirty_log
KVM: MMU: inline set_spte in mmu_set_spte
KVM: MMU: inline set_spte in FNAME(sync_page)
KVM: MMU: clean up make_spte return value
KVM: MMU: remove unnecessary argument to mmu_set_spte
KVM: MMU: set ad_disabled in TDP MMU role
KVM: MMU: pass kvm_mmu_page struct to make_spte
KVM: MMU: pass struct kvm_page_fault to mmu_set_spte
Merge tag 'kvm-riscv-5.16-1' of git://github.com/kvm-riscv/linux into HEAD
Merge commit 'kvm-pagedata-alloc-fixes' into HEAD
KVM: x86: avoid warning with -Wbitwise-instead-of-logical
kvm: x86: protect masterclock with a seqcount
KVM: x86/mmu: clean up prefetch/prefault/speculative naming
Merge branch 'kvm-pvclock-raw-spinlock' into HEAD
Merge tag 'kvmarm-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
Merge tag 'kvm-s390-next-5.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD
Merge tag 'kvm-riscv-5.16-2' of https://github.com/kvm-riscv/linux into HEAD

Raghavendra Rao Ananta (14):
KVM: arm64: selftests: Add MMIO readl/writel support
tools: arm64: Import sysreg.h
KVM: arm64: selftests: Introduce ARM64_SYS_KVM_REG
KVM: arm64: selftests: Add support for cpu_relax
KVM: arm64: selftests: Add basic support for arch_timers
KVM: arm64: selftests: Add basic support to generate delays
KVM: arm64: selftests: Add support to disable and enable local IRQs
KVM: arm64: selftests: Maintain consistency for vcpuid type
KVM: arm64: selftests: Add guest support to get the vcpuid
KVM: arm64: selftests: Add light-weight spinlock support
KVM: arm64: selftests: Add basic GICv3 support
KVM: arm64: selftests: Add host support for vGIC
KVM: arm64: selftests: Add arch_timer test
KVM: arm64: selftests: arch_timer: Support vCPU migration

Ricardo Koller (13):
kvm: arm64: vgic: Introduce vgic_check_iorange
KVM: arm64: vgic-v3: Check redist region is not above the VM IPA size
KVM: arm64: vgic-v2: Check cpu interface region is not above the VM IPA size
KVM: arm64: vgic-v3: Check ITS region is not above the VM IPA size
KVM: arm64: vgic: Drop vgic_check_ioaddr()
KVM: arm64: selftests: Make vgic_init gic version agnostic
KVM: arm64: selftests: Make vgic_init/vm_gic_create version agnostic
KVM: arm64: selftests: Add some tests for GICv2 in vgic_init
KVM: arm64: selftests: Add tests for GIC redist/cpuif partially above IPA range
KVM: arm64: selftests: Add test for legacy GICv3 REDIST base partially above IPA range
KVM: arm64: selftests: Add init ITS device test
KVM: selftests: Make memslot_perf_test arch independent
KVM: selftests: Build the memslot tests for arm64

Sean Christopherson (23):
KVM: x86: Subsume nested GPA read helper into load_pdptrs()
KVM: x86: Simplify retrieving the page offset when loading PDTPRs
KVM: x86: Do not mark all registers as avail/dirty during RESET/INIT
KVM: x86: Remove defunct setting of CR0.ET for guests during vCPU create
KVM: x86: Remove defunct setting of XCR0 for guest during vCPU create
KVM: x86: Fold fx_init() into kvm_arch_vcpu_create()
KVM: VMX: Drop explicit zeroing of MSR guest values at vCPU creation
KVM: VMX: Move RESET emulation to vmx_vcpu_reset()
KVM: SVM: Move RESET emulation to svm_vcpu_reset()
KVM: x86: WARN on non-zero CRs at RESET to detect improper initalization
KVM: x86: Manually retrieve CPUID.0x1 when getting FMS for RESET/INIT
KVM: x86/mmu: Complete prefetch for trailing SPTEs for direct, legacy MMU
KVM: x86/mmu: Verify shadow walk doesn't terminate early in page faults
KVM: arm64: Unconditionally include generic KVM's Kconfig
KVM: arm64: Depend on HAVE_KVM instead of OF
KVM: x86: Add vendor name to kvm_x86_ops, use it for error messages
KVM: x86/mmu: Drop a redundant, broken remote TLB flush
KVM: x86/mmu: Drop a redundant remote TLB flush in kvm_zap_gfn_range()
KVM: x86/mmu: Extract zapping of rmaps for gfn range to separate helper
KVM: x86: Move SVM's APICv sanity check to common x86
KVM: x86: Use rw_semaphore for APICv lock to allow vCPU parallelism
x86/irq: Ensure PI wakeup handler is unregistered before module unload
KVM: VMX: Unregister posted interrupt wakeup handler on hardware unsetup

Thomas Huth (1):
KVM: selftests: Fix kvm_vm_free() in cr4_cpuid_sync and vmx_tsc_adjust tests

Vitaly Kuznetsov (6):
KVM: nVMX: Reset vmxon_ptr upon VMXOFF emulation.
KVM: x86: hyper-v: Avoid calling kvm_make_vcpus_request_mask() with vcpu_mask==NULL
KVM: Optimize kvm_make_vcpus_request_mask() a bit
KVM: Drop 'except' parameter from kvm_make_vcpus_request_mask()
KVM: Pre-allocate cpumasks for kvm_make_all_cpus_request_except()
KVM: Make kvm_make_vcpus_request_mask() use pre-allocated cpu_kick_mask

Wanpeng Li (2):
KVM: vPMU: Fill get_msr MSR_CORE_PERF_GLOBAL_OVF_CTRL w/ 0
KVM: emulate: Comment on difference between RDPMC implementation and manual

Will Deacon (5):
arm64: Prevent kexec and hibernation if is_protected_kvm_enabled()
KVM: arm64: Reject stub hypercalls after pKVM has been initialised
KVM: arm64: Propagate errors from __pkvm_prot_finalize hypercall
KVM: arm64: Prevent re-finalisation of pKVM for a given CPU
KVM: arm64: Disable privileged hypercalls after pKVM finalisation

Xiaoyao Li (4):
KVM: VMX: Restore host's MSR_IA32_RTIT_CTL when it's not zero
KVM: VMX: Use precomputed vmx->pt_desc.addr_range
KVM: VMX: Rename pt_desc.addr_range to pt_desc.num_address_ranges
KVM: VMX: RTIT_CTL_BRANCH_EN has no dependency on other CPUID bit

Yang Li (1):
KVM: use vma_pages() helper

Yu Zhang (1):
KVM: nVMX: Use INVALID_GPA for pointers used in nVMX.

ran jianping (1):
RISC-V: KVM: remove unneeded semicolon

Documentation/admin-guide/kernel-parameters.txt | 15 +-
Documentation/virt/kvm/api.rst | 241 +++-
Documentation/virt/kvm/devices/vcpu.rst | 70 ++
Documentation/virt/kvm/devices/xics.rst | 2 +-
Documentation/virt/kvm/devices/xive.rst | 2 +-
MAINTAINERS | 12 +
arch/arm64/Kconfig | 1 +
arch/arm64/include/asm/kvm_arm.h | 1 +
arch/arm64/include/asm/kvm_asm.h | 48 +-
arch/arm64/include/asm/kvm_emulate.h | 5 +-
arch/arm64/include/asm/kvm_host.h | 4 +-
arch/arm64/include/asm/kvm_hyp.h | 5 +
arch/arm64/include/asm/sysreg.h | 3 +
arch/arm64/kernel/smp.c | 3 +-
arch/arm64/kvm/Kconfig | 10 +-
arch/arm64/kvm/arm.c | 102 +-
arch/arm64/kvm/hyp/include/hyp/fault.h | 75 ++
arch/arm64/kvm/hyp/include/hyp/switch.h | 235 ++--
arch/arm64/kvm/hyp/include/nvhe/fixed_config.h | 200 +++
arch/arm64/kvm/hyp/include/nvhe/trap_handler.h | 2 +
arch/arm64/kvm/hyp/nvhe/Makefile | 2 +-
arch/arm64/kvm/hyp/nvhe/host.S | 26 +-
arch/arm64/kvm/hyp/nvhe/hyp-main.c | 48 +-
arch/arm64/kvm/hyp/nvhe/mem_protect.c | 11 +-
arch/arm64/kvm/hyp/nvhe/pkvm.c | 185 +++
arch/arm64/kvm/hyp/nvhe/setup.c | 3 +
arch/arm64/kvm/hyp/nvhe/switch.c | 99 ++
arch/arm64/kvm/hyp/nvhe/sys_regs.c | 487 ++++++++
arch/arm64/kvm/hyp/vgic-v3-sr.c | 22 +-
arch/arm64/kvm/hyp/vhe/switch.c | 16 +
arch/arm64/kvm/mmu.c | 2 +-
arch/arm64/kvm/pmu-emul.c | 2 +-
arch/arm64/kvm/reset.c | 2 +-
arch/arm64/kvm/sys_regs.c | 41 +-
arch/arm64/kvm/vgic/vgic-init.c | 2 +-
arch/arm64/kvm/vgic/vgic-irqfd.c | 2 +-
arch/arm64/kvm/vgic/vgic-its.c | 18 +-
arch/arm64/kvm/vgic/vgic-kvm-device.c | 25 +-
arch/arm64/kvm/vgic/vgic-mmio-v3.c | 8 +-
arch/arm64/kvm/vgic/vgic-v3.c | 27 +-
arch/arm64/kvm/vgic/vgic-v4.c | 2 +-
arch/arm64/kvm/vgic/vgic.h | 5 +-
arch/mips/kvm/mips.c | 2 +-
arch/powerpc/include/asm/kvm_book3s.h | 2 +-
arch/powerpc/include/asm/kvm_host.h | 4 +-
arch/powerpc/kvm/book3s_xive.c | 2 +-
arch/powerpc/kvm/powerpc.c | 2 +-
arch/riscv/Kconfig | 2 +
arch/riscv/Makefile | 1 +
arch/riscv/include/asm/csr.h | 87 ++
arch/riscv/include/asm/kvm_host.h | 264 ++++
arch/riscv/include/asm/kvm_types.h | 7 +
arch/riscv/include/asm/kvm_vcpu_fp.h | 59 +
arch/riscv/include/asm/kvm_vcpu_timer.h | 44 +
arch/riscv/include/uapi/asm/kvm.h | 128 ++
arch/riscv/kernel/asm-offsets.c | 156 +++
arch/riscv/kvm/Kconfig | 35 +
arch/riscv/kvm/Makefile | 26 +
arch/riscv/kvm/main.c | 118 ++
arch/riscv/kvm/mmu.c | 802 ++++++++++++
arch/riscv/kvm/tlb.S | 74 ++
arch/riscv/kvm/vcpu.c | 825 +++++++++++++
arch/riscv/kvm/vcpu_exit.c | 701 +++++++++++
arch/riscv/kvm/vcpu_fp.c | 167 +++
arch/riscv/kvm/vcpu_sbi.c | 185 +++
arch/riscv/kvm/vcpu_switch.S | 400 ++++++
arch/riscv/kvm/vcpu_timer.c | 225 ++++
arch/riscv/kvm/vm.c | 97 ++
arch/riscv/kvm/vmid.c | 120 ++
arch/s390/include/asm/pgtable.h | 9 +-
arch/s390/include/asm/uv.h | 15 +-
arch/s390/kernel/uv.c | 65 +-
arch/s390/kvm/intercept.c | 5 +
arch/s390/kvm/kvm-s390.c | 7 +-
arch/s390/kvm/kvm-s390.h | 9 +
arch/s390/kvm/priv.c | 2 +
arch/s390/kvm/pv.c | 21 +-
arch/s390/kvm/sigp.c | 14 +-
arch/s390/mm/gmap.c | 15 +-
arch/s390/mm/pgtable.c | 109 +-
arch/x86/include/asm/kvm_host.h | 48 +-
arch/x86/include/asm/kvm_page_track.h | 11 +-
arch/x86/include/uapi/asm/kvm.h | 4 +
arch/x86/kernel/irq.c | 4 +-
arch/x86/kvm/Kconfig | 3 +
arch/x86/kvm/cpuid.c | 10 +-
arch/x86/kvm/emulate.c | 5 +
arch/x86/kvm/hyperv.c | 22 +-
arch/x86/kvm/ioapic.c | 2 +-
arch/x86/kvm/ioapic.h | 4 +-
arch/x86/kvm/mmu.h | 114 +-
arch/x86/kvm/mmu/mmu.c | 702 ++++++-----
arch/x86/kvm/mmu/mmu_internal.h | 21 +-
arch/x86/kvm/mmu/mmutrace.h | 18 +-
arch/x86/kvm/mmu/page_track.c | 49 +-
arch/x86/kvm/mmu/paging_tmpl.h | 168 ++-
arch/x86/kvm/mmu/spte.c | 34 +-
arch/x86/kvm/mmu/spte.h | 21 +-
arch/x86/kvm/mmu/tdp_mmu.c | 119 +-
arch/x86/kvm/mmu/tdp_mmu.h | 6 +-
arch/x86/kvm/svm/nested.c | 52 +-
arch/x86/kvm/svm/sev.c | 6 +-
arch/x86/kvm/svm/svm.c | 168 ++-
arch/x86/kvm/svm/svm.h | 9 +-
arch/x86/kvm/trace.h | 9 +-
arch/x86/kvm/vmx/nested.c | 63 +-
arch/x86/kvm/vmx/pmu_intel.c | 6 +-
arch/x86/kvm/vmx/sgx.c | 16 +-
arch/x86/kvm/vmx/vmx.c | 136 +-
arch/x86/kvm/vmx/vmx.h | 2 +-
arch/x86/kvm/x86.c | 800 +++++++-----
arch/x86/kvm/x86.h | 2 -
drivers/clocksource/timer-riscv.c | 9 +
drivers/gpu/drm/i915/Kconfig | 1 +
include/clocksource/timer-riscv.h | 16 +
include/linux/kvm_host.h | 18 +-
include/uapi/linux/kvm.h | 29 +-
tools/arch/arm64/include/asm/sysreg.h | 1296 ++++++++++++++++++++
tools/arch/x86/include/asm/pvclock-abi.h | 48 +
tools/arch/x86/include/asm/pvclock.h | 103 ++
tools/testing/selftests/kvm/.gitignore | 3 +
tools/testing/selftests/kvm/Makefile | 7 +-
tools/testing/selftests/kvm/aarch64/arch_timer.c | 479 ++++++++
.../selftests/kvm/aarch64/debug-exceptions.c | 30 +-
.../selftests/kvm/aarch64/psci_cpu_on_test.c | 2 +-
tools/testing/selftests/kvm/aarch64/vgic_init.c | 369 ++++--
.../selftests/kvm/include/aarch64/arch_timer.h | 142 +++
.../testing/selftests/kvm/include/aarch64/delay.h | 25 +
tools/testing/selftests/kvm/include/aarch64/gic.h | 21 +
.../selftests/kvm/include/aarch64/processor.h | 90 +-
.../selftests/kvm/include/aarch64/spinlock.h | 13 +
tools/testing/selftests/kvm/include/aarch64/vgic.h | 20 +
tools/testing/selftests/kvm/include/kvm_util.h | 13 +
tools/testing/selftests/kvm/kvm_create_max_vcpus.c | 2 +-
tools/testing/selftests/kvm/lib/aarch64/gic.c | 95 ++
.../selftests/kvm/lib/aarch64/gic_private.h | 21 +
tools/testing/selftests/kvm/lib/aarch64/gic_v3.c | 240 ++++
tools/testing/selftests/kvm/lib/aarch64/gic_v3.h | 70 ++
.../testing/selftests/kvm/lib/aarch64/processor.c | 24 +-
tools/testing/selftests/kvm/lib/aarch64/spinlock.c | 27 +
tools/testing/selftests/kvm/lib/aarch64/vgic.c | 70 ++
tools/testing/selftests/kvm/lib/kvm_util.c | 46 +-
tools/testing/selftests/kvm/lib/sparsebit.c | 2 +-
tools/testing/selftests/kvm/lib/x86_64/processor.c | 4 +-
tools/testing/selftests/kvm/lib/x86_64/svm.c | 14 +-
tools/testing/selftests/kvm/memslot_perf_test.c | 56 +-
.../selftests/kvm/system_counter_offset_test.c | 132 ++
.../selftests/kvm/x86_64/cr4_cpuid_sync_test.c | 3 +-
.../testing/selftests/kvm/x86_64/kvm_clock_test.c | 203 +++
.../selftests/kvm/x86_64/vmx_tsc_adjust_test.c | 2 +-
virt/kvm/eventfd.c | 15 +-
virt/kvm/kvm_main.c | 127 +-
152 files changed, 11646 insertions(+), 1752 deletions(-)

diff --cc arch/riscv/Kconfig
index c28b743eba57,f5fe8a7f0e24..000000000000
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@@ -566,3 -561,6 +566,5 @@@ menu "Power management options
source "kernel/power/Kconfig"

endmenu
+
+ source "arch/riscv/kvm/Kconfig"
-source "drivers/firmware/Kconfig"
diff --cc arch/x86/kvm/x86.c
index 2686f2edb47c,ac83d873d65b..000000000000
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@@ -10485,16 -10869,15 +10730,6 @@@ static int sync_regs(struct kvm_vcpu *v
return 0;
}

- static void fx_init(struct kvm_vcpu *vcpu)
-void kvm_free_guest_fpu(struct kvm_vcpu *vcpu)
--{
- /*
- * Ensure guest xcr0 is valid for loading
- */
- vcpu->arch.xcr0 = XFEATURE_MASK_FP;
-
- vcpu->arch.cr0 |= X86_CR0_ET;
- if (vcpu->arch.guest_fpu) {
- kmem_cache_free(x86_fpu_cache, vcpu->arch.guest_fpu);
- vcpu->arch.guest_fpu = NULL;
- }
--}
-EXPORT_SYMBOL_GPL(kvm_free_guest_fpu);
--
int kvm_arch_vcpu_precreate(struct kvm *kvm, unsigned int id)
{
if (kvm_check_tsc_unstable() && atomic_read(&kvm->online_vcpus) != 0)
@@@ -10551,13 -10934,24 +10786,11 @@@ int kvm_arch_vcpu_create(struct kvm_vcp
if (!alloc_emulate_ctxt(vcpu))
goto free_wbinvd_dirty_mask;

- vcpu->arch.user_fpu = kmem_cache_zalloc(x86_fpu_cache,
- GFP_KERNEL_ACCOUNT);
- if (!vcpu->arch.user_fpu) {
- pr_err("kvm: failed to allocate userspace's fpu\n");
- goto free_emulate_ctxt;
- }
-
- vcpu->arch.guest_fpu = kmem_cache_zalloc(x86_fpu_cache,
- GFP_KERNEL_ACCOUNT);
- if (!vcpu->arch.guest_fpu) {
+ if (!fpu_alloc_guest_fpstate(&vcpu->arch.guest_fpu)) {
pr_err("kvm: failed to allocate vcpu's fpu\n");
- goto free_user_fpu;
+ goto free_emulate_ctxt;
}
- fpstate_init(&vcpu->arch.guest_fpu->state);
- if (boot_cpu_has(X86_FEATURE_XSAVES))
- vcpu->arch.guest_fpu->state.xsave.header.xcomp_bv =
- host_xcr0 | XSTATE_COMPACTION_ENABLED;

- fx_init(vcpu);
-
vcpu->arch.maxphyaddr = cpuid_query_maxphyaddr(vcpu);
vcpu->arch.reserved_gpa_bits = kvm_vcpu_reserved_gpa_bits_raw(vcpu);

diff --cc arch/riscv/Kconfig
index c28b743eba57,f5fe8a7f0e24..000000000000
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@@ -566,3 -561,6 +566,5 @@@ menu "Power management options
source "kernel/power/Kconfig"

endmenu
+
+ source "arch/riscv/kvm/Kconfig"
-source "drivers/firmware/Kconfig"
diff --cc arch/x86/kvm/x86.c
index 2686f2edb47c,ac83d873d65b..000000000000
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@@ -10485,16 -10869,15 +10730,6 @@@ static int sync_regs(struct kvm_vcpu *v
return 0;
}

- static void fx_init(struct kvm_vcpu *vcpu)
-void kvm_free_guest_fpu(struct kvm_vcpu *vcpu)
--{
- /*
- * Ensure guest xcr0 is valid for loading
- */
- vcpu->arch.xcr0 = XFEATURE_MASK_FP;
-
- vcpu->arch.cr0 |= X86_CR0_ET;
- if (vcpu->arch.guest_fpu) {
- kmem_cache_free(x86_fpu_cache, vcpu->arch.guest_fpu);
- vcpu->arch.guest_fpu = NULL;
- }
--}
-EXPORT_SYMBOL_GPL(kvm_free_guest_fpu);
--
int kvm_arch_vcpu_precreate(struct kvm *kvm, unsigned int id)
{
if (kvm_check_tsc_unstable() && atomic_read(&kvm->online_vcpus) != 0)
@@@ -10551,13 -10934,24 +10786,11 @@@ int kvm_arch_vcpu_create(struct kvm_vcp
if (!alloc_emulate_ctxt(vcpu))
goto free_wbinvd_dirty_mask;

- vcpu->arch.user_fpu = kmem_cache_zalloc(x86_fpu_cache,
- GFP_KERNEL_ACCOUNT);
- if (!vcpu->arch.user_fpu) {
- pr_err("kvm: failed to allocate userspace's fpu\n");
- goto free_emulate_ctxt;
- }
-
- vcpu->arch.guest_fpu = kmem_cache_zalloc(x86_fpu_cache,
- GFP_KERNEL_ACCOUNT);
- if (!vcpu->arch.guest_fpu) {
+ if (!fpu_alloc_guest_fpstate(&vcpu->arch.guest_fpu)) {
pr_err("kvm: failed to allocate vcpu's fpu\n");
- goto free_user_fpu;
+ goto free_emulate_ctxt;
}
- fpstate_init(&vcpu->arch.guest_fpu->state);
- if (boot_cpu_has(X86_FEATURE_XSAVES))
- vcpu->arch.guest_fpu->state.xsave.header.xcomp_bv =
- host_xcr0 | XSTATE_COMPACTION_ENABLED;

- fx_init(vcpu);
-
vcpu->arch.maxphyaddr = cpuid_query_maxphyaddr(vcpu);
vcpu->arch.reserved_gpa_bits = kvm_vcpu_reserved_gpa_bits_raw(vcpu);

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