CVS commit: src/sys/arch

["matthew green" <mrg%netbsd.org@localhost>]

Module Name:    src
Committed By:   mrg
Date:           Mon Sep  4 20:58:52 UTC 2023

Modified Files:
        src/sys/arch/amd64/include: cpu.h
        src/sys/arch/i386/include: cpu.h

Log Message:
x86: avoid annoying GCC 12 bounds check in curcpu() and curlwp().

these functions read %gs and return an pointer at an offset from this
value (the current cpu, or lwp pointers), and GCC is complaining that
they're accessing a array cpu_info[0] (ie, zero length, no storage.)

several attempts to workaround it have failed, and because of the
asm volatile nature of this, it seems very unlikely a compiler would
take this and do something wrong with it.


To generate a diff of this commit:
cvs rdiff -u -r1.71 -r1.72 src/sys/arch/amd64/include/cpu.h
cvs rdiff -u -r1.184 -r1.185 src/sys/arch/i386/include/cpu.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.