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4288ff7ba1
An MMU notifier could cause us to clobber the stage-2 context loaded on a CPU when we switch to another VM's context to invalidate. This isn't an issue right now as the stage-2 context gets reloaded on every guest entry, but is disastrous when moving __load_stage2() into the vcpu_load() path. Restore the previous stage-2 context on the way out of a TLB invalidation if we installed something else. Deliberately do this after TGE=1 is synchronized to keep things safe in light of the speculative AT errata. Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20231018233212.2888027-3-oliver.upton@linux.dev Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
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.