linux-kernel - [GIT PULL] KVM fixes for Linux 6.11-rc7

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Message-ID: <20240906154517.191976-1-pbonzini@redhat.com>
Date: Fri,  6 Sep 2024 11:45:17 -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 6.11-rc7

Linus,

The following changes since commit 47ac09b91befbb6a235ab620c32af719f8208399:

  Linux 6.11-rc4 (2024-08-18 13:17:27 -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 59cbd4eea48fdbc68fc17a29ad71188fea74b28b:

  KVM: Remove HIGH_RES_TIMERS dependency (2024-09-05 12:04:54 -0400)

Many small fixes that accumulated while I was on vacation...

----------------------------------------------------------------
x86:

- Fixup missed comments from the REMOVED_SPTE=>FROZEN_SPTE rename.

- Ensure a root is successfully loaded when pre-faulting SPTEs.

- Grab kvm->srcu when handling KVM_SET_VCPU_EVENTS to guard against accessing
  memslots if toggling SMM happens to force a VM-Exit.

- Emulate MSR_{FS,GS}_BASE on SVM even though interception is always disabled,
  so that KVM does the right thing if KVM's emulator encounters {RD,WR}MSR.

- Explicitly clear BUS_LOCK_DETECT from KVM's caps on AMD, as KVM doesn't yet
  virtualize BUS_LOCK_DETECT on AMD.

- Cleanup the help message for CONFIG_KVM_AMD_SEV, and call out that KVM now
  supports SEV-SNP too.

- Specialize return value of KVM_CHECK_EXTENSION(KVM_CAP_READONLY_MEM),
  based on VM type

- Remove unnecessary dependency on CONFIG_HIGH_RES_TIMERS

- Note an RCU quiescent state on guest exit.  This avoids a call to rcu_core()
  if there was a grace period request while guest was running.

----------------------------------------------------------------
Leonardo Bras (1):
      kvm: Note an RCU quiescent state on guest exit

Maxim Levitsky (1):
      KVM: SVM: fix emulation of msr reads/writes of MSR_FS_BASE and MSR_GS_BASE

Paolo Bonzini (1):
      Merge tag 'kvm-x86-fixes-6.11-rcN' of https://github.com/kvm-x86/linux into kvm-master

Ravi Bangoria (1):
      KVM: SVM: Don't advertise Bus Lock Detect to guest if SVM support is missing

Sean Christopherson (2):
      KVM: x86/mmu: Check that root is valid/loaded when pre-faulting SPTEs
      KVM: x86: Acquire kvm->srcu when handling KVM_SET_VCPU_EVENTS

Steven Rostedt (1):
      KVM: Remove HIGH_RES_TIMERS dependency

Tom Dohrmann (1):
      KVM: x86: Only advertise KVM_CAP_READONLY_MEM when supported by VM

Vitaly Kuznetsov (1):
      KVM: SEV: Update KVM_AMD_SEV Kconfig entry and mention SEV-SNP

Yan Zhao (1):
      KVM: x86/mmu: Fixup comments missed by the REMOVED_SPTE=>FROZEN_SPTE rename

 arch/x86/kvm/Kconfig             |  7 ++++---
 arch/x86/kvm/mmu/mmu.c           |  4 +++-
 arch/x86/kvm/mmu/spte.c          |  6 +++---
 arch/x86/kvm/mmu/spte.h          |  2 +-
 arch/x86/kvm/mmu/tdp_mmu.c       |  8 ++++----
 arch/x86/kvm/svm/svm.c           | 15 +++++++++++++++
 arch/x86/kvm/x86.c               |  5 ++++-
 include/linux/context_tracking.h |  6 ++++--
 include/linux/kvm_host.h         | 10 +++++++++-
 9 files changed, 47 insertions(+), 16 deletions(-)