linux-kernel - [PATCH 0/4] KVM: x86: Revert SLOT_ZAP

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Message-ID: <20240927001635.501418-1-seanjc@google.com>
Date: Thu, 26 Sep 2024 17:16:31 -0700
From: Sean Christopherson <seanjc@...gle.com>
To: Paolo Bonzini <pbonzini@...hat.com>, Sean Christopherson <seanjc@...gle.com>
Cc: kvm@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Kai Huang <kai.huang@...el.com>, Rick Edgecombe <rick.p.edgecombe@...el.com>, 
	Yan Zhao <yan.y.zhao@...el.com>
Subject: [PATCH 0/4] KVM: x86: Revert SLOT_ZAP_ALL quirk

Revert the entire KVM_X86_QUIRK_SLOT_ZAP_ALL series, as the code is buggy
for shadow MMUs, and I'm not convinced a quirk is actually the right way
forward.  I'm not totally opposed to it (obviously, given that I suggested
it at one point), but I would prefer to give ourselves ample time to sort
out exactly how we want to move forward, i.e. not rush something in to
unhose v6.12.

Sean Christopherson (4):
  Revert "KVM: selftests: Test memslot move in memslot_perf_test with
    quirk disabled"
  Revert "KVM: selftests: Allow slot modification stress test with quirk
    disabled"
  Revert "KVM: selftests: Test slot move/delete with slot zap quirk
    enabled/disabled"
  Revert "KVM: x86/mmu: Introduce a quirk to control memslot zap
    behavior"

 Documentation/virt/kvm/api.rst                |  8 -----
 arch/x86/include/asm/kvm_host.h               |  3 +-
 arch/x86/include/uapi/asm/kvm.h               |  1 -
 arch/x86/kvm/mmu/mmu.c                        | 34 +------------------
 .../kvm/memslot_modification_stress_test.c    | 19 ++---------
 .../testing/selftests/kvm/memslot_perf_test.c | 12 +------
 .../selftests/kvm/set_memory_region_test.c    | 29 +++++-----------
 7 files changed, 13 insertions(+), 93 deletions(-)


base-commit: 3f8df6285271d9d8f17d733433e5213a63b83a0b
-- 
2.46.1.824.gd892dcdcdd-goog