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3515899bef
Without CONFIG_X86_ESPFIX64 exc_double_fault() is noreturn and objtool is clever enough to figure that out. vmlinux.o: warning: objtool: asm_exc_double_fault()+0x22: unreachable instruction 0000000000001260 <asm_exc_double_fault>: 1260: f3 0f 1e fa endbr64 1264: 90 nop 1265: 90 nop 1266: 90 nop 1267: e8 84 03 00 00 call 15f0 <paranoid_entry> 126c: 48 89 e7 mov %rsp,%rdi 126f: 48 8b 74 24 78 mov 0x78(%rsp),%rsi 1274: 48 c7 44 24 78 ff ff ff ff movq $0xffffffffffffffff,0x78(%rsp) 127d: e8 00 00 00 00 call 1282 <asm_exc_double_fault+0x22> 127e: R_X86_64_PLT32 exc_double_fault-0x4 1282: e9 09 04 00 00 jmp 1690 <paranoid_exit> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/Yi9gOW9f1GGwwUD6@hirez.programming.kicks-ass.net |
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| fs | ||
| include | ||
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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.