OpenBSD Journal

Execute-only status report

Contributed by rueda on from the anti-BROP dept.

Theo de Raadt (deraadt@) posted to tech@ a status report (and 2 test programs) regarding execute-only (xonly). The report begins:

We've made good progress in the xonly effort so here's a small summary.

architectures crossed over completely

	arm64 - X bit without implied R in mmu
	riscv64  - X bit without implied R in mmu
	amd64 - using hardware 'PKU' feature
	powerpc64 - using feature similar to PKU
	hppa - using gateway feature

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