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2c50166c62
As the hypervisor maps the host's .bss and .rodata sections in its stage-1, make sure to tag them as shared in hyp and host page-tables. But since the hypervisor relies on the presence of these mappings, we cannot let the host in complete control of the memory regions -- it must not unshare or donate them to another entity for example. To prevent this, let's transfer the ownership of those ranges to the hypervisor itself, and share the pages back with the host. Signed-off-by: Quentin Perret <qperret@google.com> Reviewed-by: Fuad Tabba <tabba@google.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20210809152448.1810400-18-qperret@google.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.