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3bf31b5786
Handle TDX PV CPUID hypercall for the CPUIDs virtualized by VMM according to TDX Guest Host Communication Interface (GHCI). For TDX, most CPUID leaf/sub-leaf combinations are virtualized by the TDX module while some trigger #VE. On #VE, TDX guest can issue TDG.VP.VMCALL<INSTRUCTION.CPUID> (same value as EXIT_REASON_CPUID) to request VMM to emulate CPUID operation. Morph PV CPUID hypercall to EXIT_REASON_CPUID and wire up to the KVM backend function. Suggested-by: Sean Christopherson <seanjc@google.com> Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com> [binbin: rewrite changelog] Signed-off-by: Binbin Wu <binbin.wu@linux.intel.com> Message-ID: <20250227012021.1778144-6-binbin.wu@linux.intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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.