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Date:      Fri, 1 Jan 2021 20:31:29 -0800
From:      Mark Millard <marklmi@yahoo.com>
To:        dev-commits-src-main@freebsd.org
Subject:   Re: git: 202aea9c82ea - main - arm: tune vmparam.h towards a little more  modern
Message-ID:  <302DD6F4-0D16-456B-8EC7-960B273D8CAA@yahoo.com>
In-Reply-To: <C25D0F4E-4261-430C-8A36-C7E1FC51F6DA@yahoo.com>
References:  <C25D0F4E-4261-430C-8A36-C7E1FC51F6DA@yahoo.com>

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On 2020-Dec-31, at 18:07, Mark Millard <marklmi at yahoo.com> wrote:

> Comparing the old and new 32-bit arm limits to arm64 . . .
>=20
> arm:
>=20
> -#define	MAXDSIZ		(512UL*1024*1024)	/* max data size =
*/
> +#define	MAXDSIZ		(1856UL*1024*1024)	/* max data size =
*/
>=20
> vs. arm64:
>=20
> #define	MAXDSIZ		(1*1024*1024*1024)	/* max data size =
*/
>=20
> So arm64 now has a smaller MAXDSIZ than 32-bit arm.
>=20
> Is that intensional?
>=20

For reference for other comparisons of how things are
now for MAXDSIZ :

# grep -r MAXDSIZ sys/*/include/vmparam.h
sys/amd64/include/vmparam.h:#ifndef MAXDSIZ
sys/amd64/include/vmparam.h:#define	MAXDSIZ		=
(32768UL*1024*1024)	/* max data size */
sys/arm/include/vmparam.h:#ifndef	MAXDSIZ
sys/arm/include/vmparam.h:#define	MAXDSIZ		=
(1856UL*1024*1024)	/* max data size */
sys/arm64/include/vmparam.h:#ifndef MAXDSIZ
sys/arm64/include/vmparam.h:#define	MAXDSIZ		=
(1*1024*1024*1024)	/* max data size */
sys/i386/include/vmparam.h:#ifndef MAXDSIZ
sys/i386/include/vmparam.h:#define	MAXDSIZ		=
(512UL*1024*1024)	/* max data size */
sys/mips/include/vmparam.h:#ifndef MAXDSIZ
sys/mips/include/vmparam.h:#define	MAXDSIZ		=
(1*1024UL*1024*1024)	/* max data size */
sys/powerpc/include/vmparam.h:#ifndef	MAXDSIZ
sys/powerpc/include/vmparam.h:#define	MAXDSIZ		=
(32UL*1024*1024*1024)	/* max data size */
sys/powerpc/include/vmparam.h:#define	MAXDSIZ		=
(1*1024*1024*1024)	/* max data size */
sys/riscv/include/vmparam.h:#ifndef MAXDSIZ
sys/riscv/include/vmparam.h:#define	MAXDSIZ		=
(1*1024*1024*1024)	/* max data size */

(powerpc64 and 32-bit powerpc both show figures above.)

=3D=3D=3D
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)




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