5974565bc2
Hyper-V supports the use of XMM registers to perform fast hypercalls. This allows guests to take advantage of the improved performance of the fast hypercall interface even though a hypercall may require more than (the current maximum of) two input registers. The XMM fast hypercall interface uses six additional XMM registers (XMM0 to XMM5) to allow the guest to pass an input parameter block of up to 112 bytes. Add framework to read from XMM registers in kvm_hv_hypercall() and use the additional hypercall inputs from XMM registers in kvm_hv_flush_tlb() when possible. Cc: Alexander Graf <graf@amazon.com> Co-developed-by: Evgeny Iakovlev <eyakovl@amazon.de> Signed-off-by: Evgeny Iakovlev <eyakovl@amazon.de> Signed-off-by: Siddharth Chandrasekaran <sidcha@amazon.de> Message-Id: <fc62edad33f1920fe5c74dde47d7d0b4275a9012.1622019134.git.sidcha@amazon.de> 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.