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RMP faults on kernel addresses are fatal and should never happen in practice. They indicate a bug in the host kernel somewhere. Userspace RMP faults shouldn't occur either, since even for VMs the memory used for private pages is handled by guest_memfd and by design is not mappable by userspace. Dump RMP table information about the PFN corresponding to the faulting HVA to help diagnose any issues of this sort when show_fault_oops() is triggered by an RMP fault. Signed-off-by: Michael Roth <michael.roth@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/r/20240126041126.1927228-10-michael.roth@amd.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.