Skip to content
Snippets Groups Projects
Alexandru Elisei's avatar
Alexandru Elisei authored
According to erratum #1688567, a SPE buffer write that results in an Access
flag fault or Permission fault at stage 2 is reported with an unsupported
PMBSR_EL1.FSC code.

KVM avoids SPE stage 2 faults altogether by requiring userspace to lock the
guest memory in RAM and pre-mapping it in stage 2 before the VM is started.
As a result, KVM is not impacted by this erratum.
216d347f
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.