KVM: x86: TDX preparation of introducing vm_type and blocking ioctls based on vm

From:		Xiaoyao Li <xiaoyao.li-AT-intel.com>
To:		Paolo Bonzini <pbonzini-AT-redhat.com>, Sean Christopherson <seanjc-AT-google.com>, Vitaly Kuznetsov <vkuznets-AT-redhat.com>, Wanpeng Li <wanpengli-AT-tencent.com>, Jim Mattson <jmattson-AT-google.com>, Joerg Roedel <joro-AT-8bytes.org>
Subject:		[PATCH 00/11] KVM: x86: TDX preparation of introducing vm_type and blocking ioctls based on vm_type
Date:		Fri, 12 Nov 2021 23:37:22 +0800
Message-ID:		<20211112153733.2767561-1-xiaoyao.li@intel.com>
Cc:		xiaoyao.li-AT-intel.com, erdemaktas-AT-google.com, Connor Kuehl <ckuehl-AT-redhat.com>, x86-AT-kernel.org, linux-kernel-AT-vger.kernel.org, kvm-AT-vger.kernel.org, isaku.yamahata-AT-intel.com, Kai Huang <kai.huang-AT-intel.com>
Archive-link:		Article

This patchset is split from the TDX series[1].

It introduces vm_type for x86 at Patch 1, which leaves vaule 0 for normal
VM and adds a new type KVM_X86_TDX_VM for upcoming TDX guest. Following
patches (2, 4 - 11) block the ioctls that doesn't support for TDX from
userspace for TDX by checking the VM type.

Patch 3 is a cleanup.

Note, it doesn't block the ioctls for SEV-ES at all because I'm not sure
if each one applied to SEV-ES or not. Folks can introduce new vm_type for
SEV-* and extend each helper function kvm_xxx_feature_disallowed() for
SEV-* vm type. 

Paolo,

Please let us know if you want this series sent together with whole
TDX support.

[1] https://lore.kernel.org/all/cover.1625186503.git.isaku.ya...

Isaku Yamahata (1):
  KVM: Disallow read-only memory for x86 TDX

Kai Huang (1):
  KVM: x86: Disable in-kernel I/O APIC and level routes for TDX

Sean Christopherson (6):
  KVM: x86: Introduce vm_type to differentiate normal VMs from
    confidential VMs
  KVM: x86: Disable direct IRQ injection for TDX
  KVM: x86: Disable MCE related stuff for TDX
  KVM: x86: Disallow tsc manipulation for TDX
  KVM: x86: Block ioctls to access guest state for TDX
  KVM: Disallow dirty logging for x86 TDX

Xiaoyao Li (3):
  KVM: x86: Clean up kvm_vcpu_ioctl_x86_setup_mce()
  KVM: x86: Disable SMM for TDX
  KVM: x86: Disable INIT/SIPI for TDX

 Documentation/virt/kvm/api.rst        |  15 ++
 arch/x86/include/asm/kvm-x86-ops.h    |   1 +
 arch/x86/include/asm/kvm_host.h       |   2 +
 arch/x86/include/uapi/asm/kvm.h       |   3 +
 arch/x86/kvm/ioapic.c                 |   5 +
 arch/x86/kvm/irq_comm.c               |  13 +-
 arch/x86/kvm/lapic.c                  |   3 +-
 arch/x86/kvm/svm/svm.c                |   6 +
 arch/x86/kvm/vmx/vmx.c                |   6 +
 arch/x86/kvm/x86.c                    | 199 +++++++++++++++++++++-----
 arch/x86/kvm/x86.h                    |  35 +++++
 include/linux/kvm_host.h              |   2 +
 include/uapi/linux/kvm.h              |   1 +
 tools/arch/x86/include/uapi/asm/kvm.h |   3 +
 tools/include/uapi/linux/kvm.h        |   1 +
 virt/kvm/kvm_main.c                   |  25 +++-
 16 files changed, 278 insertions(+), 42 deletions(-)

-- 
2.27.0

KVM: x86: TDX preparation of introducing vm_type and blocking ioctls based on vm_type