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Date:      Thu, 21 Nov 2019 00:59:41 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 241710] please increase ARG_MAX
Message-ID:  <bug-241710-227-REjdO4icdA@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-241710-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-241710-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D241710

John Baldwin <jhb@FreeBSD.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jhb@FreeBSD.org

--- Comment #18 from John Baldwin <jhb@FreeBSD.org> ---
Perhaps we could just let the ARM folks figure out if there is a problem an=
d if
so they can add an #ifdef?  On a quad-core ARMv7 (e.g. my RPi), doubling
ARG_MAX would use an additional 2MB of KVA (256K * (2 * 4 CPUs)).  I don't =
know
if we have any non-terrible ways to see the kernel_map.  I have some gdb
scripts that I've only tested on amd64 but do handle submaps.  I thought we=
 had
a hack to export the kernel map via pid 0 for procstat -v, but that doesn't
seem to work for me.

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