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When getting a gpa from a gva to unprotect the associated gfn when an event is awating reinjection, walk the guest PTEs for WRITE as there's no point in unprotecting the gfn if the guest is unable to write the page, i.e. if write-protection can't trigger emulation. Note, the entire flow should be guarded on the access being a write, and even better should be conditioned on actually triggering a write-protect fault. This will be addressed in a future commit. Reviewed-by: Yuan Yao <yuan.yao@intel.com> Link: https://lore.kernel.org/r/20240831001538.336683-14-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@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 reStructuredText 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.