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1c18efdaa3
Track "VMX exposed to L1" via a governed feature flag instead of using a dedicated helper to provide the same functionality. The main goal is to drive convergence between VMX and SVM with respect to querying features that are controllable via module param (SVM likes to cache nested features), avoiding the guest CPUID lookups at runtime is just a bonus and unlikely to provide any meaningful performance benefits. Note, X86_FEATURE_VMX is set in kvm_cpu_caps if and only if "nested" is true, and the CPU obviously supports VMX if KVM+VMX is running. I.e. the check on "nested" is now implicitly down by the kvm_cpu_cap_has() check in kvm_governed_feature_check_and_set(). No functional change intended. Reviewed-by: Yuan Yao <yuan.yao@intel.com> Reviwed-by: Kai Huang <kai.huang@intel.com> Link: https://lore.kernel.org/r/20230815203653.519297-8-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com> |
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| fs | ||
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| ipc | ||
| kernel | ||
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| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
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| .mailmap | ||
| .rustfmt.toml | ||
| COPYING | ||
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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 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.