mirror of https://github.com/torvalds/linux.git
8c49b5d43d
Add a post-processing step to compilation of KVM nVHE hyp code which calls a custom host tool (gen-hyprel) on the partially linked object file (hyp sections' names prefixed). The tool lists all R_AARCH64_ABS64 data relocations targeting hyp sections and generates an assembly file that will form a new section .hyp.reloc in the kernel binary. The new section contains an array of 32-bit offsets to the positions targeted by these relocations. Since these addresses of those positions will not be determined until linking of `vmlinux`, each 32-bit entry carries a R_AARCH64_PREL32 relocation with addend <section_base_sym> + <r_offset>. The linker of `vmlinux` will therefore fill the slot accordingly. This relocation data will be used at runtime to convert the kernel VAs at those positions to hyp VAs. Signed-off-by: David Brazdil <dbrazdil@google.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20210105180541.65031-5-dbrazdil@google.com |
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|---|---|---|
| Documentation | ||
| LICENSES | ||
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| 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 | ||
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.