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If the vCPU enters system management mode while running a nested guest, RSM starts processing the vmentry while still in SMM. In that case, however, the pages pointed to by the vmcs12 might be incorrectly loaded from SMRAM. To avoid this, delay the handling of the pages until just before the next vmentry. This is done with a new request and a new entry in kvm_x86_ops, which we will be able to reuse for nested VMX state migration. Extracted from a patch by Jim Mattson and KarimAllah Ahmed. 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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.