Signed-off-by: David Goulet <dgoulet@torproject.org>

Equi-X supports optionally allocating its solver memory using huge
pages, to reduce the virtual memory subsystem overhead required to make
the entire solver buffer live.

Tor doesn't use this feature, since it seems to have no noticeable
performance benefit at this time, but we still included code for it at
compile time. To improve portability, this patch disables huge page
support by default and enables it only in the cmake build system used
for equix benchmarks.

With this patch equix-bench still supports huge pages. Verified using
strace that we're making the hugepage allocation.

There's no fallback for huge pages, so Equi-X initialization will fail
if they are requested and we don't support them for any runtime or
compile-time reason.

Addresses #40843 (NetBSD) but also prevents future porting issues
related to huge pages.

NetBSD includes the idea of a 'maximum protection' per-region,
and an mprotect which exceeds the max protection will be denied.

If we explicitly ask for a maximum which includes execute permission, we
can successfully swap our code buffer's permissions between read-write
and read-execute when each hash program is compiled.

With this patch, the crypto/hashx tests pass on NetBSD 9.
This addresses bug #40844

This path in hashx_vm_alloc_huge() for OpenBSD and NetBSD always
fails without checking its parameter. Fix the warning.

As suggested by @wiz on #40843, let's add an explicit check to
hashx_vm_alloc_huge() that avoids using a Linux-style default
on NetBSD targets.

This doesn't change the questionable Linux-style default,
but a future patch will disable this code by default so it's not a
portability liability.

(This code is in hashx's VM layer but it's actually only relevant to
equix.)

This addresses bug #40843. Another patch will disable huge pages
by default entirely, but this patch is sufficient to fix the NetBSD
build.

Just in case there are other instances hiding in the maze.

reapply exit policy on reload

Closes #40676

See merge request tpo/core/tor!735

Implement proposal 301-dont-vote-on-package-fingerprints.txt

See merge request tpo/core/tor!743

fix lint clippy::arc_with_non_send_sync

See merge request tpo/core/tor!747

Also add more info to leg dump.

HTML in comment, what a bad idea...

Signed-off-by: David Goulet <dgoulet@torproject.org>

Signed-off-by: David Goulet <dgoulet@torproject.org>

Signed-off-by: David Goulet <dgoulet@torproject.org>

Signed-off-by: David Goulet <dgoulet@torproject.org>