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Detect SEPT violations that occur when an SEPT entry is in PENDING state while the TD is configured not to receive #VE on SEPT violations. A TD guest can be configured not to receive #VE by setting SEPT_VE_DISABLE to 1 in tdh_mng_init() or modifying pending_ve_disable to 1 in TDCS when flexible_pending_ve is permitted. In such cases, the TDX module will not inject #VE into the TD upon encountering an EPT violation caused by an SEPT entry in the PENDING state. Instead, TDX module will exit to VMM and set extended exit qualification type to PENDING_EPT_VIOLATION and exit qualification bit 6:3 to 0. Since #VE will not be injected to such TDs, they are not able to be notified to accept a GPA. TD accessing before accepting a private GPA is regarded as an error within the guest. Detect such guest error by inspecting the (extended) exit qualification bits and make such VM dead. Cc: Xiaoyao Li <xiaoyao.li@intel.com> Cc: Rick Edgecombe <rick.p.edgecombe@intel.com> Signed-off-by: Yan Zhao <yan.y.zhao@intel.com> Signed-off-by: Binbin Wu <binbin.wu@linux.intel.com> Message-ID: <20250227012021.1778144-3-binbin.wu@linux.intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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| 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.