From: Sean Christopherson <seanjc@google.com>
To: Sean Christopherson <seanjc@google.com>,
Paolo Bonzini <pbonzini@redhat.com>
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
Mingwei Zhang <mizhang@google.com>,
David Matlack <dmatlack@google.com>,
Jim Mattson <jmattson@google.com>
Subject: [PATCH v2 0/9] KVM: x86/mmu: Clean up MMU_DEBUG and BUG/WARN usage
Date: Fri, 21 Jul 2023 15:59:57 -0700 [thread overview]
Message-ID: <20230721230006.2337941-1-seanjc@google.com> (raw)
This series consist of three loosely related miniseries:
1. Remove the noisy prints buried behind MMU_DEBUG, and replace MMU_DEBUG
with a KVM_PROVE_MMU Kconfig.
2. Use WARN_ON_ONCE() for all runtime WARNs, i.e. avoid spamming the
kernel log if something goes awry in the MMU.
3. Demote BUG() usage in the shadow MMU to KVM_BUG_ON() when the kernel
is built with CONFIG_BUG_ON_DATA_CORRUPTION=n.
v2:
- Collect a review. [Mingwei]
- Call out the more obvious path to FNAME(walk_addr_generic) in patch 6. [David]
- Use BUILD_BUG_ON_INVALID() for the stub. [David]
v1: https://lore.kernel.org/all/20230511235917.639770-1-seanjc@google.com
Mingwei Zhang (1):
KVM: x86/mmu: Plumb "struct kvm" all the way to pte_list_remove()
Sean Christopherson (8):
KVM: x86/mmu: Delete rmap_printk() and all its usage
KVM: x86/mmu: Delete the "dbg" module param
KVM: x86/mmu: Rename MMU_WARN_ON() to KVM_MMU_WARN_ON()
KVM: x86/mmu: Convert "runtime" WARN_ON() assertions to WARN_ON_ONCE()
KVM: x86/mmu: Bug the VM if a vCPU ends up in long mode without PAE
enabled
KVM: x86/mmu: Replace MMU_DEBUG with proper KVM_PROVE_MMU Kconfig
KVM: x86/mmu: Use BUILD_BUG_ON_INVALID() for KVM_MMU_WARN_ON() stub
KVM: x86/mmu: BUG() in rmap helpers iff
CONFIG_BUG_ON_DATA_CORRUPTION=y
arch/x86/kvm/Kconfig | 13 ++++
arch/x86/kvm/mmu/mmu.c | 127 ++++++++++++++------------------
arch/x86/kvm/mmu/mmu_internal.h | 12 +--
arch/x86/kvm/mmu/page_track.c | 16 ++--
arch/x86/kvm/mmu/paging_tmpl.h | 16 +++-
arch/x86/kvm/mmu/spte.c | 4 +-
arch/x86/kvm/mmu/spte.h | 8 +-
arch/x86/kvm/mmu/tdp_iter.c | 4 +-
arch/x86/kvm/mmu/tdp_mmu.c | 28 +++----
include/linux/kvm_host.h | 19 +++++
10 files changed, 134 insertions(+), 113 deletions(-)
base-commit: 294ebdda1560d3eb515da88b805ba7f88eb28d21
--
2.41.0.487.g6d72f3e995-goog
next reply other threads:[~2023-07-21 23:00 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-21 22:59 Sean Christopherson [this message]
2023-07-21 22:59 ` [PATCH v2 1/9] KVM: x86/mmu: Delete rmap_printk() and all its usage Sean Christopherson
2023-07-21 22:59 ` [PATCH v2 2/9] KVM: x86/mmu: Delete the "dbg" module param Sean Christopherson
2023-07-21 23:00 ` [PATCH v2 3/9] KVM: x86/mmu: Rename MMU_WARN_ON() to KVM_MMU_WARN_ON() Sean Christopherson
2023-07-21 23:00 ` [PATCH v2 4/9] KVM: x86/mmu: Convert "runtime" WARN_ON() assertions to WARN_ON_ONCE() Sean Christopherson
2023-07-21 23:00 ` [PATCH v2 5/9] KVM: x86/mmu: Bug the VM if a vCPU ends up in long mode without PAE enabled Sean Christopherson
2023-07-21 23:00 ` [PATCH v2 6/9] KVM: x86/mmu: Replace MMU_DEBUG with proper KVM_PROVE_MMU Kconfig Sean Christopherson
2023-07-21 23:00 ` [PATCH v2 7/9] KVM: x86/mmu: Use BUILD_BUG_ON_INVALID() for KVM_MMU_WARN_ON() stub Sean Christopherson
2023-07-21 23:00 ` [PATCH v2 8/9] KVM: x86/mmu: Plumb "struct kvm" all the way to pte_list_remove() Sean Christopherson
2023-07-21 23:00 ` [PATCH v2 9/9] KVM: x86/mmu: BUG() in rmap helpers iff CONFIG_BUG_ON_DATA_CORRUPTION=y Sean Christopherson
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