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Re: increase memory on VEXPRESS_A15?

On Fri, Jul 26, 2019 at 10:15:55AM -0300, Sergio de Almeida Lenzi wrote:
> Hello.
> I am running NetBSD 8.1 release on qemu on a FreeBSD64 machine..
> I change some in the dts/dtb file in order to define 4 cpu and more
> memory. I need these to compile large programs in the NetBSD RPI-armv7
> platform. running in the RPI chip is very slow besides RPI3 have only
> 1GB of memory.
> The 4 cpu is running fine, the problem is with memory that even if qemu
> defines 4gb of memory the VEXPRESS_A15 kernel only recognizes 2GB...
> Is there a way to make the NetBSD arm kernel recognize more than 2GB??

Might be able to get closer to 4GiB, if the vexpress physical memory
layout allows (which it might not).  Need LPAE support in the arm32
pmap for physical addresses above 4GiB.

	Jonathan Kollasch

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