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| Filename | Latest commit message | Latest commit date |
|---|---|---|
c4762fdab5
Various intercepts hard-code the respective instruction lengths to optimize skip_emulated_instruction(): when next_rip is pre-set we skip kvm_emulate_instruction(vcpu, EMULTYPE_SKIP). The optimization is, however, incorrect: different (redundant) prefixes could be used to enlarge the instruction. We can't really avoid decoding. svm->next_rip is not used when CPU supports 'nrips' (X86_FEATURE_NRIPS) feature: next RIP is provided in VMCB. The feature is not really new (Opteron G3s had it already) and the change should have zero affect. Remove manual svm->next_rip setting with hard-coded instruction lengths. The only case where we now use svm->next_rip is EXIT_IOIO: the instruction length is provided to us by hardware. Hardcoded RIP advancement remains in vmrun_interception(), this is going to be taken care of separately. Reported-by: Jim Mattson <jmattson@google.com> Reviewed-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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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.