linux-stable/Documentation/virt
Paolo Bonzini 1f05833193 Merge branch 'kvm-sev-move-context' into kvm-master
Add support for AMD SEV and SEV-ES intra-host migration support.  Intra
host migration provides a low-cost mechanism for userspace VMM upgrades.

In the common case for intra host migration, we can rely on the normal
ioctls for passing data from one VMM to the next. SEV, SEV-ES, and other
confidential compute environments make most of this information opaque, and
render KVM ioctls such as "KVM_GET_REGS" irrelevant.  As a result, we need
the ability to pass this opaque metadata from one VMM to the next. The
easiest way to do this is to leave this data in the kernel, and transfer
ownership of the metadata from one KVM VM (or vCPU) to the next.  In-kernel
hand off makes it possible to move any data that would be
unsafe/impossible for the kernel to hand directly to userspace, and
cannot be reproduced using data that can be handed to userspace.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-11-11 11:02:58 -05:00
..
acrn docs: acrn: Introduce ACRN 2021-02-09 10:58:18 +01:00
kvm KVM: SEV: Add support for SEV intra host migration 2021-11-11 10:35:27 -05:00
uml docs: UML: user_mode_linux_howto_v2 edits 2021-10-12 14:07:35 -06:00
guest-halt-polling.rst docs: virt: guest-halt-polling.txt convert to ReST 2020-02-12 20:10:08 +01:00
index.rst docs: acrn: Introduce ACRN 2021-02-09 10:58:18 +01:00
ne_overview.rst nitro_enclaves: Update documentation for Arm64 support 2021-09-14 11:11:20 +02:00
paravirt_ops.rst