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The following intercept bit has been added to support VMEXIT for INVPCID instruction: Code Name Cause A2h VMEXIT_INVPCID INVPCID instruction The following bit has been added to the VMCB layout control area to control intercept of INVPCID: Byte Offset Bit(s) Function 14h 2 intercept INVPCID Enable the interceptions when the the guest is running with shadow page table enabled and handle the tlbflush based on the invpcid instruction type. For the guests with nested page table (NPT) support, the INVPCID feature works as running it natively. KVM does not need to do any special handling in this case. AMD documentation for INVPCID feature is available at "AMD64 Architecture Programmer’s Manual Volume 2: System Programming, Pub. 24593 Rev. 3.34(or later)" The documentation can be obtained at the links below: Link: https://www.amd.com/system/files/TechDocs/24593.pdf Link: https://bugzilla.kernel.org/show_bug.cgi?id=206537 Signed-off-by: Babu Moger <babu.moger@amd.com> Reviewed-by: Jim Mattson <jmattson@google.com> Message-Id: <159985255929.11252.17346684135277453258.stgit@bmoger-ubuntu> 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 Restructured Text 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.