linux-kernel - [PATCH 0/4] KVM: x86: nVMX: Nested PML bug fix and cleanup

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20200622215832.22090-1-sean.j.christopherson@intel.com>
Date:   Mon, 22 Jun 2020 14:58:28 -0700
From:   Sean Christopherson <sean.j.christopherson@...el.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     Sean Christopherson <sean.j.christopherson@...el.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 0/4] KVM: x86: nVMX: Nested PML bug fix and cleanup

Fix for a theoretical bug in nested PML emulation, and additional clean up
of the related code.

Tested by doing a few rounds of intra-VM migration (same L1) of an L2
guest with PML confirmed enabled in L1.

This has a trivial conflict with patch 3 of the MMU files series[*], both
remove function prototypes from mmu.h.

[*] https://lkml.kernel.org/r/20200622202034.15093-4-sean.j.christopherson@intel.com

Sean Christopherson (4):
  KVM: nVMX: Plumb L2 GPA through to PML emulation
  KVM: x86/mmu: Drop kvm_arch_write_log_dirty() wrapper
  KVM: nVMX: WARN if PML emulation helper is invoked outside of nested
    guest
  KVM: x86/mmu: Make .write_log_dirty a nested operation

 arch/x86/include/asm/kvm_host.h |  2 +-
 arch/x86/kvm/mmu.h              |  1 -
 arch/x86/kvm/mmu/mmu.c          | 15 -------------
 arch/x86/kvm/mmu/paging_tmpl.h  |  7 +++---
 arch/x86/kvm/vmx/nested.c       | 38 +++++++++++++++++++++++++++++++++
 arch/x86/kvm/vmx/vmx.c          | 37 --------------------------------
 6 files changed, 43 insertions(+), 57 deletions(-)

-- 
2.26.0