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Exit to userspace with -EFAULT / KVM_EXIT_MEMORY_FAULT if a private fault triggers emulation of any kind, as KVM doesn't currently support emulating access to guest private memory. Practically speaking, private faults and emulation are already mutually exclusive, but there are many flow that can result in KVM returning RET_PF_EMULATE, and adding one last check to harden against weird, unexpected combinations and/or KVM bugs is inexpensive. Suggested-by: Yan Zhao <yan.y.zhao@intel.com> Signed-off-by: Sean Christopherson <seanjc@google.com> Message-ID: <20240228024147.41573-2-seanjc@google.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.