linux/Documentation/virt/kvm
Sean Christopherson 89ea60c2c7 KVM: x86: Add support for "protected VMs" that can utilize private memory
Add a new x86 VM type, KVM_X86_SW_PROTECTED_VM, to serve as a development
and testing vehicle for Confidential (CoCo) VMs, and potentially to even
become a "real" product in the distant future, e.g. a la pKVM.

The private memory support in KVM x86 is aimed at AMD's SEV-SNP and
Intel's TDX, but those technologies are extremely complex (understatement),
difficult to debug, don't support running as nested guests, and require
hardware that's isn't universally accessible.  I.e. relying SEV-SNP or TDX
for maintaining guest private memory isn't a realistic option.

At the very least, KVM_X86_SW_PROTECTED_VM will enable a variety of
selftests for guest_memfd and private memory support without requiring
unique hardware.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20231027182217.3615211-24-seanjc@google.com>
Reviewed-by: Fuad Tabba <tabba@google.com>
Tested-by: Fuad Tabba <tabba@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-11-14 08:01:05 -05:00
..
arm KVM: arm64: Document vCPU feature selection UAPIs 2023-10-04 17:11:51 +00:00
devices KVM: arm64: Clarify the ordering requirements for vcpu/RD creation 2023-09-30 18:15:44 +00:00
s390 ARM: 2022-08-04 14:59:54 -07:00
x86 KVM: Documentation: Add the missing description for tdp_mmu_page into kvm_mmu_page 2023-09-27 13:32:18 -07:00
api.rst KVM: x86: Add support for "protected VMs" that can utilize private memory 2023-11-14 08:01:05 -05:00
halt-polling.rst Documentation: Fix typos 2023-08-18 11:29:03 -06:00
index.rst KVM: Move halt-polling documentation into common directory 2022-12-02 13:20:30 -05:00
locking.rst Documentation: KVM: make corrections to locking.rst 2023-06-16 08:20:53 -06:00
ppc-pv.rst Documentation: KVM: make corrections to ppc-pv.rst 2023-06-16 08:20:53 -06:00
review-checklist.rst docs: fix broken references for ReST files that moved around 2020-04-20 15:45:03 -06:00
vcpu-requests.rst Documentation: KVM: make corrections to vcpu-requests.rst 2023-06-16 08:20:53 -06:00