Hello, Does RETGUARD on OpenBSD/arm64 make use of the hardware options for pointer auth where available? These are first referenced here
https://community.arm.com/arm-community-blogs/b/architectures-and-processors-blog/posts/armv8-a-architecture-2016-additions and the Linux kernel documentation is here https://www.kernel.org/doc/html/latest/arm64/pointer-authentication.html A FreeBSD software review to enable the feature is here https://reviews.freebsd.org/D31261 I'm unsure at first glance if any of the current OpenBSD/arm64 supported systems predate ARMv8.3, but if not, this could be a good opportunity to enhance OpenBSD security on ARM by enabling it by default. Note that the kernel.org link includes an @arm.com email address if vendor information is desired. Best regards, Jonathan Lane
