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Most of our S2 helpers take a kvm_s2_mmu pointer, but quickly revert back to using the kvm structure. By doing so, we lose track of which S2 MMU context we were initially using, and fallback to the "canonical" context. If we were trying to unmap a S2 context managed by a guest hypervisor, we end-up parsing the wrong set of page tables, and bad stuff happens (as this is often happening on the back of a trapped TLBI from the guest hypervisor). Instead, make sure we always use the provided MMU context all the way. This has no impact on non-NV, as we always pass the canonical MMU context. Signed-off-by: Marc Zyngier <maz@kernel.org> Reviewed-by: Andre Przywara <andre.przywara@arm.com> Link: https://lore.kernel.org/r/20230209175820.1939006-3-maz@kernel.org 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.