On Thu, Apr 07, 2011 at 10:29:54AM +0200, Andreas Schwab wrote:
Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> writes:
Isn't there a reason it was read-write on m68k, like the table may be changed
at runtime (to install rootkits :-)? Have to check what the other arches do...
Initially the syscall_table in Linux has always been writable, bb152f53
("x86/x86_64: mark rodata section read-only: make some datastructures
const") made it read-only on x86. Apparently nobody bothered to do the
equivalent change on m68k (I don't think anything makes the kernel text
segment write protected anyway).
Except, of course, ld config files who put text and rodata in ROM/FLASH for XIP
on embedded systems.
Philippe
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