b89c07dea1
kernel tooling such as kpatch-build. Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmDZYv4RHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1ipeBAAhJPS/kCQ17Y5zGyMB0/6yfCWIifODoS7 9J+6/mqKHPDdV07yzPtOXuTTmpKV4OHPi8Yj8kaXs5L5fOmQ1uAwITwZNF5hU0a5 CiFIsubUCJmglf9b6L9EH5pBEQ72Cq4u8zIhJ9LmZ4t625AHJAm2ikZgascc4U67 RvVoGr5sYTo0YEsc1IDM1wUtnUhXBNjS1VwkXNnCFFTXYHju47MeY1sPHq2hvkzO iJGC9A+hxfM1eQt9/qC/2L/6F/XECN61gcR9Get8TkWeEGHmPG+FthmPLd4oO9Ho 03J4JfMbmXumWosAeilYBNUkfii/M5Em78Wpv/cB94iSt67rq7Eb+8gm4D5svmfN l+utsPY/HYB+uWV0hy2cV/ORRiwcJnon54dEWL6912YkKz+OIb3DK/7l9ex5lW+D r3o8NP0s6S+RgUkOFxz5VaYK1giu6fiaFysWdKeflvwlvY/64owMepQ1QfPBbeB7 3DTzvuYZ4Cb1x/vR6WBbFqGcuJKZ1CsZIBLCblveUs+G0wlu147K5E1qlXg/Wvq7 5Vzznc4fmRng8np5hxAw8ieLkatWg7szyryUV/4H2Ubs/jWGcH628ZYbapaCb7EM Eson65xzbVfhnz16z8sN13XIF1lGe8sb0+qiFSclEfyDUnZDuhwMn6d9Ubqxrg5J uTULEzmY/rI= =MvPd -----END PGP SIGNATURE----- mergetag object d33b9035e14a35f6f2a5f067f0b156a93581811d type commit tag objtool-core-2021-06-28 tagger Ingo Molnar <mingo@kernel.org> 1624859477 +0200 The biggest change in this cycle is the new code to handle and rewrite variable sized jump labels - which results in slightly tighter code generation in hot paths, through the use of short(er) NOPs. Also a number of cleanups and fixes, and a change to the generic include/linux/compiler.h to handle a s390 GCC quirk. Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmDZZGcRHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1goYg/7BxUIJXP0F5wbrMbAvJIDRgR/j3TA+ztk uNU1yabBGluMxCqJ87HadJ+A5d010G+GRUn/birVr7w1UuwWv8HOda78dnyG7tme xm78/1FlOnstuOTQxhK6rjbb2cp+QOmdsAQkq1TF4SOxArBQiwtjiOvytHjb5yNx 7LrlbtuZ7Dtc0qd2evkG4ma4QkGoDhBS1dRogrItc27ZLuFIQoNnEd2K2QNMgczw a/Jx8fgNmdoJSq+vkBn9TnS/cJYUW/PAlPNtO3ac8yE857aDIVnjXFRzveAP/nTh rwFD6aCGnJAqyqP7A8ElNjySos5O+ebYApxe7rEx0TNLbrc55qSP9lpdIO+vgytV Xzy4O7z6o+lailQ4EoF8Qf+rlPeue0kLF23SsNbZY1uT0vjX1Uv70xgKbkuyPygp GNXAy6dOXK0AfaZYL/Wa50yVnJnkYDjes/hHr+HEam5Oad566pqIyQNP8yWSPqaf KHkL//1pb5C2RKwot4IYv/ftHfZB5QftoFq6bhGBc1GXUd/FiqivvGHPW/6g7rxi ZIrXs+Fqm/5KP9mssNONfyz5XEvbcUTD1CbeqX9eyVbiYZbLp1oWSgtogiRW9ya+ HR7t0Dt/UFzFWbilb6EZff/Hdr1NZBZLdrfpvVDoMf5tR9J0BIOyjddTu89g/FIO KcfJ5yyjJBU= =+HAB -----END PGP SIGNATURE----- Merge tags 'objtool-urgent-2021-06-28' and 'objtool-core-2021-06-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull objtool fix and updates from Ingo Molnar: "An ELF format fix for a section flags mismatch bug that breaks kernel tooling such as kpatch-build. The biggest change in this cycle is the new code to handle and rewrite variable sized jump labels - which results in slightly tighter code generation in hot paths, through the use of short(er) NOPs. Also a number of cleanups and fixes, and a change to the generic include/linux/compiler.h to handle a s390 GCC quirk" * tag 'objtool-urgent-2021-06-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: objtool: Don't make .altinstructions writable * tag 'objtool-core-2021-06-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: objtool: Improve reloc hash size guestimate instrumentation.h: Avoid using inline asm operand modifiers compiler.h: Avoid using inline asm operand modifiers kbuild: Fix objtool dependency for 'OBJECT_FILES_NON_STANDARD_<obj> := n' objtool: Reflow handle_jump_alt() jump_label/x86: Remove unused JUMP_LABEL_NOP_SIZE jump_label, x86: Allow short NOPs objtool: Provide stats for jump_labels objtool: Rewrite jump_label instructions objtool: Decode jump_entry::key addend jump_label, x86: Emit short JMP jump_label: Free jump_entry::key bit1 for build use jump_label, x86: Add variable length patching support jump_label, x86: Introduce jump_entry_size() jump_label, x86: Improve error when we fail expected text jump_label, x86: Factor out the __jump_table generation jump_label, x86: Strip ASM jump_label support x86, objtool: Dont exclude arch/x86/realmode/ objtool: Rewrite hashtable sizing
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.