[GIT PULL] Second batch of KVM patches for Linux 6.4

[Paolo Bonzini]

Linus,

The following changes since commit 1a5304fecee523060f26e2778d9d8e33c0562df3:

  Merge tag 'parisc-for-6.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux (2023-05-03 19:41:59 -0700)

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 7a8016d95651fecce5708ed93a24a03a9ad91c80:

  Merge tag 'kvm-s390-next-6.4-2' of https://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD (2023-05-05 06:15:09 -0400)

This includes the 6.4 changes for RISC-V, and a few bugfix patches for
other architectures.  For x86, this closes a longstanding performance
issue in the newer and (usually) more scalable page table management code.

If you wish, you can take a look at commit d4fba4dfdcce1 to see the RISC-V
conflicts and their resolution.

----------------------------------------------------------------
RISC-V:
- ONE_REG interface to enable/disable SBI extensions
- Zbb extension for Guest/VM
- AIA CSR virtualization

x86:
- Fix a long-standing TDP MMU flaw, where unloading roots on a vCPU can
  result in the root being freed even though the root is completely valid
  and can be reused as-is (with a TLB flush).

s390:
- A couple bugfixes.

----------------------------------------------------------------
Andrew Jones (1):
      RISC-V: KVM: Alphabetize selects

Anup Patel (10):
      RISC-V: KVM: Add ONE_REG interface to enable/disable SBI extensions
      RISC-V: KVM: Allow Zbb extension for Guest/VM
      RISC-V: Add AIA related CSR defines
      RISC-V: Detect AIA CSRs from ISA string
      RISC-V: KVM: Drop the _MASK suffix from hgatp.VMID mask defines
      RISC-V: KVM: Initial skeletal support for AIA
      RISC-V: KVM: Implement subtype for CSR ONE_REG interface
      RISC-V: KVM: Add ONE_REG interface for AIA CSRs
      RISC-V: KVM: Use bitmap for irqs_pending and irqs_pending_mask
      RISC-V: KVM: Virtualize per-HART AIA CSRs

Claudio Imbrenda (2):
      KVM: s390: pv: fix asynchronous teardown for small VMs
      KVM: s390: fix race in gmap_make_secure()

David Matlack (1):
      KVM: RISC-V: Retry fault if vma_lookup() results become invalid

Paolo Bonzini (3):
      Merge tag 'kvm-riscv-6.4-1' of https://github.com/kvm-riscv/linux into HEAD
      Merge tag 'kvm-x86-mmu-6.4-2' of https://github.com/kvm-x86/linux into HEAD
      Merge tag 'kvm-s390-next-6.4-2' of https://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD

Sean Christopherson (1):
      KVM: x86: Preserve TDP MMU roots until they are explicitly invalidated

 arch/riscv/include/asm/csr.h          | 107 +++++++++-
 arch/riscv/include/asm/hwcap.h        |   8 +
 arch/riscv/include/asm/kvm_aia.h      | 127 +++++++++++
 arch/riscv/include/asm/kvm_host.h     |  14 +-
 arch/riscv/include/asm/kvm_vcpu_sbi.h |   8 +-
 arch/riscv/include/uapi/asm/kvm.h     |  51 ++++-
 arch/riscv/kernel/cpu.c               |   2 +
 arch/riscv/kernel/cpufeature.c        |   2 +
 arch/riscv/kvm/Kconfig                |  10 +-
 arch/riscv/kvm/Makefile               |   1 +
 arch/riscv/kvm/aia.c                  | 388 ++++++++++++++++++++++++++++++++++
 arch/riscv/kvm/main.c                 |  22 +-
 arch/riscv/kvm/mmu.c                  |  28 ++-
 arch/riscv/kvm/vcpu.c                 | 194 +++++++++++++----
 arch/riscv/kvm/vcpu_insn.c            |   1 +
 arch/riscv/kvm/vcpu_sbi.c             | 247 ++++++++++++++++++++--
 arch/riscv/kvm/vcpu_sbi_base.c        |   2 +-
 arch/riscv/kvm/vm.c                   |   4 +
 arch/riscv/kvm/vmid.c                 |   4 +-
 arch/s390/kernel/uv.c                 |  32 +--
 arch/s390/kvm/pv.c                    |   5 +
 arch/s390/mm/gmap.c                   |   7 +
 arch/x86/kvm/mmu/tdp_mmu.c            | 121 +++++------
 23 files changed, 1208 insertions(+), 177 deletions(-)
 create mode 100644 arch/riscv/include/asm/kvm_aia.h
 create mode 100644 arch/riscv/kvm/aia.c