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d04c77d231
The up-to-date flag as is now is not too useful; it tells guest_memfd not to overwrite the contents of a folio, but it doesn't say that the page is ready to be mapped into the guest. For encrypted guests, mapping a private page requires that the "preparation" phase has succeeded, and at the same time the same page cannot be prepared twice. So, ensure that folio_mark_uptodate() is only called on a prepared page. If kvm_gmem_prepare_folio() or the post_populate callback fail, the folio will not be marked up-to-date; it's not a problem to call clear_highpage() again on such a page prior to the next preparation attempt. Reviewed-by: Michael Roth <michael.roth@amd.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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| certs | ||
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| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
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| mm | ||
| net | ||
| rust | ||
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| security | ||
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| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .editorconfig | ||
| .get_maintainer.ignore | ||
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| .gitignore | ||
| .mailmap | ||
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| README | ||
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.