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Teach EPT violation helper to check shared mask of a GPA to find out whether the GPA is for private memory. When EPT violation is triggered after TD accessing a private GPA, KVM will exit to user space if the corresponding GFN's attribute is not private. User space will then update GFN's attribute during its memory conversion process. After that, TD will re-access the private GPA and trigger EPT violation again. Only with GFN's attribute matches to private, KVM will fault in private page, map it in mirrored TDP root, and propagate changes to private EPT to resolve the EPT violation. Relying on GFN's attribute tracking xarray to determine if a GFN is private, as for KVM_X86_SW_PROTECTED_VM, may lead to endless EPT violations. Signed-off-by: Rick Edgecombe <rick.p.edgecombe@intel.com> Co-developed-by: Yan Zhao <yan.y.zhao@intel.com> Signed-off-by: Yan Zhao <yan.y.zhao@intel.com> Message-ID: <20241112073539.22056-1-yan.y.zhao@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .clippy.toml | ||
| .cocciconfig | ||
| .editorconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| 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.