linux-kernel - [GIT PULL] KVM fixes for Linux 5.18-rc4

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Message-Id: <20220422165655.1665574-1-pbonzini@redhat.com>
Date:   Fri, 22 Apr 2022 12:56:55 -0400
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     torvalds@...ux-foundation.org
Cc:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Subject: [GIT PULL] KVM fixes for Linux 5.18-rc4

Linus,

The following changes since commit b2d229d4ddb17db541098b83524d901257e93845:

  Linux 5.18-rc3 (2022-04-17 13:57:31 -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 e852be8b148e117e25be1c98cf72ee489b05919e:

  kvm: selftests: introduce and use more page size-related constants (2022-04-21 15:41:01 -0400)

The main and larger change here is a workaround for AMD's lack of cache
coherency for encrypted-memory guests.

I have another patch pending, but it's waiting for review from the
architecture maintainers.

----------------------------------------------------------------
RISC-V:

* Remove 's' & 'u' as valid ISA extension

* Do not allow disabling the base extensions 'i'/'m'/'a'/'c'

x86:

* Fix NMI watchdog in guests on AMD

* Fix for SEV cache incoherency issues

* Don't re-acquire SRCU lock in complete_emulated_io()

* Avoid NULL pointer deref if VM creation fails

* Fix race conditions between APICv disabling and vCPU creation

* Bugfixes for disabling of APICv

* Preserve BSP MSR_KVM_POLL_CONTROL across suspend/resume

selftests:

* Do not use bitfields larger than 32-bits, they differ between GCC and clang

----------------------------------------------------------------
Atish Patra (2):
      RISC-V: KVM: Remove 's' & 'u' as valid ISA extension
      RISC-V: KVM: Restrict the extensions that can be disabled

Like Xu (1):
      KVM: x86/pmu: Update AMD PMC sample period to fix guest NMI-watchdog

Mingwei Zhang (2):
      KVM: SVM: Flush when freeing encrypted pages even on SME_COHERENT CPUs
      KVM: SEV: add cache flush to solve SEV cache incoherency issues

Paolo Bonzini (3):
      Merge tag 'kvm-riscv-fixes-5.18-2' of https://github.com/kvm-riscv/linux into HEAD
      kvm: selftests: do not use bitfields larger than 32-bits for PTEs
      kvm: selftests: introduce and use more page size-related constants

Sean Christopherson (9):
      KVM: x86: Don't re-acquire SRCU lock in complete_emulated_io()
      KVM: RISC-V: Use kvm_vcpu.srcu_idx, drop RISC-V's unnecessary copy
      KVM: Add helpers to wrap vcpu->srcu_idx and yell if it's abused
      KVM: Initialize debugfs_dentry when a VM is created to avoid NULL deref
      KVM: x86: Tag APICv DISABLE inhibit, not ABSENT, if APICv is disabled
      KVM: nVMX: Defer APICv updates while L2 is active until L1 is active
      KVM: x86: Pend KVM_REQ_APICV_UPDATE during vCPU creation to fix a race
      KVM: x86: Skip KVM_GUESTDBG_BLOCKIRQ APICv update if APICv is disabled
      KVM: SVM: Simplify and harden helper to flush SEV guest page(s)

Thomas Huth (1):
      KVM: selftests: Silence compiler warning in the kvm_page_table_test

Tom Rix (1):
      KVM: SPDX style and spelling fixes

Wanpeng Li (1):
      x86/kvm: Preserve BSP MSR_KVM_POLL_CONTROL across suspend/resume

 arch/powerpc/kvm/book3s_64_mmu_radix.c             |   9 +-
 arch/powerpc/kvm/book3s_hv_nested.c                |  16 +-
 arch/powerpc/kvm/book3s_rtas.c                     |   4 +-
 arch/powerpc/kvm/powerpc.c                         |   4 +-
 arch/riscv/include/asm/kvm_host.h                  |   3 -
 arch/riscv/kvm/vcpu.c                              |  37 ++--
 arch/riscv/kvm/vcpu_exit.c                         |   4 +-
 arch/s390/kvm/interrupt.c                          |   4 +-
 arch/s390/kvm/kvm-s390.c                           |   8 +-
 arch/s390/kvm/vsie.c                               |   4 +-
 arch/x86/include/asm/kvm-x86-ops.h                 |   1 +
 arch/x86/include/asm/kvm_host.h                    |   1 +
 arch/x86/kernel/kvm.c                              |  13 ++
 arch/x86/kvm/pmu.h                                 |   9 +
 arch/x86/kvm/svm/pmu.c                             |   1 +
 arch/x86/kvm/svm/sev.c                             |  67 ++++---
 arch/x86/kvm/svm/svm.c                             |   1 +
 arch/x86/kvm/svm/svm.h                             |   2 +
 arch/x86/kvm/vmx/nested.c                          |   5 +
 arch/x86/kvm/vmx/pmu_intel.c                       |   8 +-
 arch/x86/kvm/vmx/vmx.c                             |   5 +
 arch/x86/kvm/vmx/vmx.h                             |   1 +
 arch/x86/kvm/x86.c                                 |  60 +++---
 include/linux/kvm_host.h                           |  26 ++-
 .../selftests/kvm/include/x86_64/processor.h       |  17 ++
 tools/testing/selftests/kvm/kvm_page_table_test.c  |   2 +-
 tools/testing/selftests/kvm/lib/x86_64/processor.c | 202 +++++++++------------
 tools/testing/selftests/kvm/x86_64/amx_test.c      |   1 -
 .../selftests/kvm/x86_64/emulator_error_test.c     |   1 -
 tools/testing/selftests/kvm/x86_64/smm_test.c      |   2 -
 .../selftests/kvm/x86_64/vmx_tsc_adjust_test.c     |   1 -
 .../testing/selftests/kvm/x86_64/xen_shinfo_test.c |   1 -
 .../testing/selftests/kvm/x86_64/xen_vmcall_test.c |   1 -
 virt/kvm/dirty_ring.c                              |   2 +-
 virt/kvm/kvm_main.c                                |  43 +++--
 virt/kvm/kvm_mm.h                                  |   2 +-
 36 files changed, 316 insertions(+), 252 deletions(-)