git: 202aea9c82ea - main - arm: tune vmparam.h towards a little more modern

[Mark Millard]

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 . . .
> 
> arm:
> 
> -#define	MAXDSIZ		(512UL*1024*1024)	/* max data size */
> +#define	MAXDSIZ		(1856UL*1024*1024)	/* max data size */
> 
> vs. arm64:
> 
> #define	MAXDSIZ		(1*1024*1024*1024)	/* max data size */
> 
> So arm64 now has a smaller MAXDSIZ than 32-bit arm.
> 
> Is that intensional?
> 

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.)

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