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Re: NX support in GNU Mach

From: Samuel Thibault
Subject: Re: NX support in GNU Mach
Date: Sun, 15 Mar 2009 23:19:15 +0100
User-agent: Mutt/1.5.12-2006-07-14


Yuhong Bao, le Fri 13 Mar 2009 12:14:56 -0700, a écrit :
> I heard that PAE support has been recently implemented in GNU Mach.


> I think the next step is to add No-Execute (NX) support to GNU Mach.

Oh, that could be useful indeed.  The good news is that the user/kernel
interface already exists: VM_PROT_EXECUTE, it's just not implemented
yet within gnumach..

> I'd also suggest adding support for more then 4 GB of RAM to GNU Mach, but
> considering that it does not even support more than 1 GB of RAM yet, I'd fix
> that before trying to support more than 4 GB of RAM. And it is IMO important 
> to
> fix, because most of today's PCs have more than 1 GB of RAM, especially thanks
> to Vista.

It'd be probably better to just support 64bit processors, which will
immediately bring support for more than 1GB of RAM.  Support for more
than 1GB of RAM on a 32bit machine is really clumsy.  Linux does it, but
it's really a pain.

> Also important IMO is ACPI support, which will help when implementing
> SMP support.

Well, the ACPI part for SMP shouldn't be so hard ; SMP itself will be.


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