Module Name: src Committed By: maxv Date: Tue Nov 14 10:15:40 UTC 2017
Modified Files: src/sys/arch/amd64/conf: Makefile.amd64 kern.ldscript.kaslr Log Message: Split each kernel section into sub-blocks of approximately 2MB. The newly created sections are named .origname.i, for example: .text -> { .text .text.0 .text.1 .text.2 .text.3 .text.4 } Each section is randomized independently by the prekern - and in a random order obviously. As a result we can get intertwined mappings, of the type: +-------+-----------+------+---------+-----------+-------+-------+------+- | text1 | NOTMAPPED | bss0 | rodata1 | NOTMAPPED | data2 | text3 | bss1 | +-------+-----------+------+---------+-----------+-------+-------+------+- ---------+- rodata0 | ... ---------+- The CTF section is dropped completely, because (a) when split it becomes enormous for some reason (that I don't quite understand, verily), and (b) the kernel expects only one CTF and can't handle several of them. To generate a diff of this commit: cvs rdiff -u -r1.62 -r1.63 src/sys/arch/amd64/conf/Makefile.amd64 cvs rdiff -u -r1.2 -r1.3 src/sys/arch/amd64/conf/kern.ldscript.kaslr Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files.