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Kai Huang 62b1fa69f3 KVM: Export hardware virtualization enabling/disabling functions
To support TDX, KVM will need to enable TDX during KVM module loading
time.  Enabling TDX requires enabling hardware virtualization first so
that all online CPUs (and the new CPU going online) are in post-VMXON
state.

KVM by default enables hardware virtualization but that is done in
kvm_init(), which must be the last step after all initialization is done
thus is too late for enabling TDX.

Export functions to enable/disable hardware virtualization so that TDX
code can use them to handle hardware virtualization enabling before
kvm_init().

Signed-off-by: Kai Huang <kai.huang@intel.com>
Message-ID: <dfe17314c0d9978b7bc3b0833dff6f167fbd28f5.1731664295.git.kai.huang@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
History 2025-03-14 14:20:49 -04:00
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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.