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authorTheo de Raadt <deraadt@cvs.openbsd.org>2022-02-01 20:29:56 +0000
committerTheo de Raadt <deraadt@cvs.openbsd.org>2022-02-01 20:29:56 +0000
commit3f50e850559be59f608433482954b819a5fdd3ac (patch)
treed5fe8288f5219355f579a2aaeef14e4c1beb7816 /usr.bin/mkdep
parentff2ea61d9c27046378698d3b5c44ba325cd619a9 (diff)
An old hack skips use of memory regions < 1MB size, because some machines
put BIOS objects into there, and rely upon them. We are shocked, SHOCKED, to find a machine that does so in a large object (Supermicro 5019D-FTN4). So now we need to ignore memory regions < 32MB in size. If we put this memory into use, the zerothread will soon clear it, and on this particular case the machine resets because something in AML or SMI gets unhappy. Other machines with similar problems may exhibit other misbehaviours, so this could fix heisenbugs. Sadly I expect products to get worse. ok kettenis, miod
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