With CHERI we'll be adding to variants of UIO_READ/UIO_WRITE that preserved pointer provenance and centralizing the definitions will make adding that a lot cleaner.

Created D57680 to follow POSIX/C's lead and stop talking about strings in mem* functions.

Rebase after removing references to strings in base manpages

Remove references to strings

Fix typo

Seems reasonable. A couple comments about things that were already here.

In CheriBSD we have a somewhat different mechanism where we embed the tags in struct swblk due to a hesitance to add more allocation to the swap path. That's not great for memory usage since it's quite a lot of space and it should be fairly compressible in most cases. I'd expect MTE to be before more compressible given it's often going to be runs of the same value. I think we could adapt this code to add CHERI tags, likely in parallel, though maybe with a shared scan loop.

I don't see any need to define these in all the headers that need type definitions.

How does this interact with an older, stock LLVM that provides stdint.h?

The net effect look like the right one. I'm not convinced by the open-coding the checks and copy given the lease processing rate should single digits per hour in most environments and it will all be in L1 on even a terrible in-order core, but I don't care that much.

__ASSUME_ALIGNED could work. __builtin_assume_aligned is broadly supported so I double we even need a fall back.

I like the overall change. I've at most skimmed the makefile bits, but this seems like a move in the right direction.

In D55310#1269811, @jhb wrote:

I suspect the complexity wasn't to avoid 4 bytes per thread but more because TLS wasn't reliably working on all of our architectures when this was first written (but I could be wrong). :)

This is a lot easier to follow.

Huh, I'm surprised lld doesn't complain.

In the LLVM ports, the lines like:

_BE_LIBS_Mips=		AsmParser Disassembler
_BE_LIBS_BACKWARDS_Mips=Exegesis

Should not be removed as the Mips backend will continue to be built when default options are used and these are needed to ensure the files are handled correctly. The changes removing support from the FREEBSD and NATIVE targets are fine.

Syscall bits look good. A few comments.

In addition to ditching mips, we've since moved all our VMs to vtnet. At this point that's table stakes unless the emulator aims entirely for retro-computing support (in which case we don't care about it.)

@vexeduxr please commit with kib's suggestion

• Rebase
• Sort EF_AARCH64 before EF_ARM

drop RISC-V

Inspired by frustration caused by recent openssl manpage install bugs blocking smoke testing.

The new commit message is much better. Thanks

I don't think the commit text is specific enough about the cause. You should point to a specific combination that fails, not claim its is was macOS only (I'm fairly sure I added this due to testing cross build on ubuntu).

centralize definition