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Isaku Yamahata 8d032b683c KVM: TDX: create/destroy VM structure
Implement managing the TDX private KeyID to implement, create, destroy
and free for a TDX guest.

When creating at TDX guest, assign a TDX private KeyID for the TDX guest
for memory encryption, and allocate pages for the guest. These are used
for the Trust Domain Root (TDR) and Trust Domain Control Structure (TDCS).

On destruction, free the allocated pages, and the KeyID.

Before tearing down the private page tables, TDX requires the guest TD to
be destroyed by reclaiming the KeyID. Do it in the vm_pre_destroy() kvm_x86_ops
hook. The TDR control structures can be freed in the vm_destroy() hook,
which runs last.

Co-developed-by: Tony Lindgren <tony.lindgren@linux.intel.com>
Signed-off-by: Tony Lindgren <tony.lindgren@linux.intel.com>
Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
Co-developed-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Co-developed-by: Kai Huang <kai.huang@intel.com>
Signed-off-by: Kai Huang <kai.huang@intel.com>
Co-developed-by: Yan Zhao <yan.y.zhao@intel.com>
Signed-off-by: Yan Zhao <yan.y.zhao@intel.com>
Co-developed-by: Rick Edgecombe <rick.p.edgecombe@intel.com>
Signed-off-by: Rick Edgecombe <rick.p.edgecombe@intel.com>
---
 - Fix build issue in kvm-coco-queue
 - Init ret earlier to fix __tdx_td_init() error handling. (Chao)
 - Standardize -EAGAIN for __tdx_td_init() retry errors (Rick)
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2025-03-14 14:20:50 -04:00
arch KVM: TDX: create/destroy VM structure 2025-03-14 14:20:50 -04:00
block
certs
crypto
Documentation
drivers vhost: return task creation error instead of NULL 2025-03-01 02:52:52 -05:00
fs
include KVM: VMX: Initialize TDX during KVM module load 2025-03-14 14:20:50 -04:00
init
io_uring
ipc
kernel vhost: return task creation error instead of NULL 2025-03-01 02:52:52 -05:00
lib
LICENSES
mm
net
rust
samples
scripts
security
sound
tools KVM x86 fixes for 6.14-rcN #2 2025-03-09 03:44:06 -04:00
usr
virt KVM: VMX: Initialize TDX during KVM module load 2025-03-14 14:20:50 -04:00
.clang-format
.clippy.toml
.cocciconfig
.editorconfig
.get_maintainer.ignore
.gitattributes
.gitignore
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.rustfmt.toml
COPYING
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Makefile Linux 6.14-rc3 2025-02-16 14:02:44 -08:00
README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.