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Linux kernel source tree
0cbc60d44c
Use a u16 instead of a u32 to track the dirty/valid status of GPRs in the emulator. Unlike struct kvm_vcpu_arch, x86_emulate_ctxt tracks only the "true" GPRs, i.e. doesn't include RIP in its array, and so only needs to track 16 registers. Note, maxing out at 16 GPRs is a fundamental property of x86-64 and will not change barring a massive architecture update. Legacy x86 ModRM and SIB encodings use 3 bits for GPRs, i.e. support 8 registers. x86-64 uses a single bit in the REX prefix for each possible reference type to double the number of supported GPRs to 16 registers (4 bits). Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Sean Christopherson <seanjc@google.com> Message-Id: <20220526210817.3428868-5-seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| 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.