Date: Fri, 23 Feb 2018 09:59:14 +0100 From: Guido Falsi <mad@madpilot.net> To: Jon Brawn <jon@brawn.org>, freebsd-arm@freebsd.org, FreeBSD current <freebsd-current@freebsd.org> Subject: Re: INTRNG Message-ID: <177301ca-b1aa-da15-4554-32a4bed9b226@madpilot.net> In-Reply-To: <401A33BD-F3AE-4139-9D47-6F85C8333022@brawn.org> References: <401A33BD-F3AE-4139-9D47-6F85C8333022@brawn.org>
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On 02/23/18 07:25, Jon Brawn wrote: > Wotcha Gang! > > In my travels through the arm64 GENERIC config file I came across the option ‘INTRNG’, and wondered what it was: > > INTeRrupt Next Generation? > INTeger Random Number Generator? > IN TRaiNinG? > INTerrupt Random Number Generator? > INdependent TRaiNinG? > > So, please put me out of my misery, what does INTRNG stand for, and what are its implications when selected vs not selected? > A quick grep in src/sys gave me this: MALLOC_DEFINE(M_INTRNG, "intr", "intr interrupt handling"); Also: arm/arm/machdep.c:#if __ARM_ARCH >= 6 && !defined(INTRNG) arm/arm/machdep.c:#error armv6 requires INTRNG So it's about interrupts and mandatory for arm processors, I suspect it's and arm (and mips too, since I found grep hits there too) specific interrupts handling method. this looks like the original RFC for this code: https://lists.freebsd.org/pipermail/freebsd-arm/2014-April/007915.html -- Guido Falsi <mad@madpilot.net>
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