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(parent: 3378408) | patch
elf: Add a tunable to control use of tagged memory
authorRichard Earnshaw <rearnsha@arm.com>
Mon, 21 Dec 2020 15:03:03 +0000 (15:03 +0000)
committerRichard Earnshaw <rearnsha@arm.com>
Mon, 21 Dec 2020 15:25:25 +0000 (15:25 +0000)
commit26450d04d38c8ed7ce5f2c89114b18c5508f13f1
treebc0d87f44a06d734a62be33261a0b51a55168648tree | snapshot
parent3378408987189772eec7bc62fc9923a6f01dc63ccommit | diff
elf: Add a tunable to control use of tagged memory

Add a new glibc tunable: mem.tagging.  This is a decimal constant in
the range 0-255 but used as a bit-field.

Bit 0 enables use of tagged memory in the malloc family of functions.
Bit 1 enables precise faulting of tag failure on platforms where this
can be controlled.
Other bits are currently unused, but if set will cause memory tag
checking for the current process to be enabled in the kernel.
elf/dl-tunables.list diff | blob | history
manual/tunables.texi diff | blob | history
Domain: System / Toolchain;