commit be04f210f954bed8663943a94ece50c2ca410231
author Warner Losh <imp@FreeBSD.org> Thu Aug 05 18:15:47 2021 -0600
committer Warner Losh <imp@bsdimp.com> Fri Sep 10 14:13:06 2021 -0600
tree 66b7ba615be609de81ee13896bf972d825d09d2d
parent b8012648b38274aa996f1477c422a79e2d44110b

bsd-user: Update mapping to handle reserved and starting conditions

Update the reserved base based on what platform we're on, as well as the
start of the mmap range. Update routines that find va ranges to interact
with the reserved ranges as well as properly align the mapping (this is
especially important for targets whose page size does not match the
host's). Loop where appropriate when the initial address space offered
by mmap does not meet the contraints.

This has 18e80c55bb6 from linux-user folded in to the upstream
bsd-user code as well.

Signed-off-by: Mikaël Urankar <mikael.urankar@gmail.com>
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Kyle Evans <kevans@FreeBSD.org>