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f6adeae81f
Handle the "no memslot" case at the beginning of kvm_faultin_pfn(), just after the private versus shared check, so that there's no need to repeatedly query whether or not a slot exists. This also makes it more obvious that, except for private vs. shared attributes, the process of faulting in a pfn simply doesn't apply to gfns without a slot. Opportunistically stuff @fault's metadata in kvm_handle_noslot_fault() so that it doesn't need to be duplicated in all paths that invoke kvm_handle_noslot_fault(), and to minimize the probability of not stuffing the right fields. Leave the existing handle behind, but convert it to a WARN, to guard against __kvm_faultin_pfn() unexpectedly nullifying fault->slot. Cc: David Matlack <dmatlack@google.com> Signed-off-by: Sean Christopherson <seanjc@google.com> Reviewed-by: Kai Huang <kai.huang@intel.com> Message-ID: <20240228024147.41573-14-seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.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.