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6be3ae45f5
Add a helper, kvm_get_filtered_xcr0(), to dedup code that needs to account for XCR0 features that require explicit opt-in on a per-process basis. In addition to documenting when KVM should/shouldn't consult xstate_get_guest_group_perm(), the helper will also allow sanitizing the filtered XCR0 to avoid enumerating architecturally illegal XCR0 values, e.g. XTILE_CFG without XTILE_DATA. No functional changes intended. Signed-off-by: Aaron Lewis <aaronlewis@google.com> Reviewed-by: Mingwei Zhang <mizhang@google.com> [sean: rename helper, move to x86.h, massage changelog] Reviewed-by: Aaron Lewis <aaronlewis@google.com> Tested-by: Aaron Lewis <aaronlewis@google.com> Link: https://lore.kernel.org/r/20230405004520.421768-2-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com> |
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| arch | ||
| 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 | ||
| .cocciconfig | ||
| .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 Restructured Text 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.