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dabc4ff70c
Use kvm_mmu_unprotect_gfn_and_retry() in reexecute_instruction() to pick up protection against infinite loops, e.g. if KVM somehow manages to encounter an unsupported instruction and unprotecting the gfn doesn't allow the vCPU to make forward progress. Other than that, the retry-on- failure logic is a functionally equivalent, open coded version of kvm_mmu_unprotect_gfn_and_retry(). Note, the emulation failure path still isn't fully protected, as KVM won't update the retry protection fields if no shadow pages are zapped (but this change is still a step forward). That flaw will be addressed in a future patch. Reviewed-by: Yuan Yao <yuan.yao@intel.com> Link: https://lore.kernel.org/r/20240831001538.336683-18-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com> |
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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.