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Re: memory management issue (Re: another regression on Efika)
From: |
Robert Millan |
Subject: |
Re: memory management issue (Re: another regression on Efika) |
Date: |
Fri, 27 Jul 2007 21:15:14 +0200 |
User-agent: |
Mutt/1.5.13 (2006-08-11) |
Forwarding reply from Sven since he wasn't subscribed when it was sent.
On Fri, Jul 27, 2007 at 12:33:10PM +0200, Sven Luther wrote:
>
> The efika has 128MB of builtin memory, and we know that everything above
> 24MB except a little heap at the top is free, so this should be enough
> for everyone, no ?
>
> The 0 to 16MB area is also free normally, and the pre-powerpc kernel
> loaded themselves at 4 or 8 MB, and relocate the kernel at 0.
>
> Using the 16MB to 24MB area is a big no-no though, since it would kill
> the firmware.
>
> The efika/pegasos firmware is not able to relocate itself dynamically,
> and as it reserves the first 256MB (1 BAT area), but it could be used
> with a 128 MB (like the efika) or smaller memory DIMM, so it cannot
> reside on the top area of ram where it belongs.
>
> There is a small stack going down from min(top-of-memory,256MB) of a
> couple MB though.
>
> The efika/pegasos firmware furthermore runs in physical memory, and
> cannot switch to virtual memory.
>
> Hope this helps, altough obviously i can make no prediction about future
> efika firmwares.
>
> Friendly,
>
> Sven Luther
>
--
Robert Millan
My spam trap is address@hidden Note: this address is only intended
for spam harvesters. Writing to it will get you added to my black list.
- Re: another regression on Efika, (continued)
- Re: another regression on Efika, Hollis Blanchard, 2007/07/04
- Re: another regression on Efika, Jordi Mallach, 2007/07/10
- memory management issue (Re: another regression on Efika), Robert Millan, 2007/07/10
- Re: memory management issue (Re: another regression on Efika), Hollis Blanchard, 2007/07/10
- Re: memory management issue (Re: another regression on Efika), Robert Millan, 2007/07/13
- Re: memory management issue (Re: another regression on Efika), Robert Millan, 2007/07/24
- Re: memory management issue (Re: another regression on Efika), Hollis Blanchard, 2007/07/25
- Re: memory management issue (Re: another regression on Efika), Robert Millan, 2007/07/25
- Re: memory management issue (Re: another regression on Efika), Hollis Blanchard, 2007/07/25
- Re: memory management issue (Re: another regression on Efika), Robert Millan, 2007/07/27
- Message not available
- Re: memory management issue (Re: another regression on Efika),
Robert Millan <=
- Re: memory management issue (Re: another regression on Efika), Robert Millan, 2007/07/29
- [PATCH] efika memory issues, Robert Millan, 2007/07/30
- Re: [PATCH] efika memory issues, Hollis Blanchard, 2007/07/30
- Re: [PATCH] efika memory issues, Robert Millan, 2007/07/31
- Re: [PATCH] efika memory issues, Hollis Blanchard, 2007/07/31
- Re: [PATCH] efika memory issues, Robert Millan, 2007/07/31
- OF disk naming scheme (Re: another regression on Efika), Robert Millan, 2007/07/10
- Re: OF disk naming scheme (Re: another regression on Efika), Jordi Mallach, 2007/07/10
- Re: OF disk naming scheme (Re: another regression on Efika), Robert Millan, 2007/07/13
- Re: OF disk naming scheme (Re: another regression on Efika), Robert Millan, 2007/07/22