[openbeos] Re: Boot failure with Quad-core
- From: "Larry Baydak" <lbaydak@xxxxxxxxxx>
- To: openbeos@xxxxxxxxxxxxx
- Date: Sun, 07 Jan 2007 15:05:01 -0500 EST
Ingo Weinhold <bonefish@xxxxxxxxxxxxxxx> wrote:
>
> The arrays are defined in headers/private/kernel/boot/kernel_args.h,
> their
> sizes in
> headers/private/kernel/boot/platform/bios_ia32/platform_kernel_args.h
> (the
> MAX_*_RANGE definitions). Currently they are set to 4. So, if the
> boundaries of one of the first 2 arrays are overwritten (i.e. there
> are
> more ranges for any reason), the range count of the following array
> will be
> invalid and the sort_addr_range() for that array will happily explore
> a
> good deal of memory (earlier or later unmapped addresses too). Which
> would
> be an excellent reason for reboot. :-)
Just so:
It appears that my machine loads 6 ranges into the
"physical_allocated_array".
Since MAX_PHYSICAL_ALLOCATED_RANGE. is defined as 4 - the
sort_addr_range()
function was definatly corrupting memory.
I cleaned up the sort_addr_range() function. Adding a parameter limit
the
maximum array size and that improvement you mentioned to the bubble
sort.
As a result I have successfully booted Haiku with the IntelQuad Core
processor.
However, this minor fix seems to me to be just a band-aid. Should not
the
size of the allocation arrays be increased? But then that leads to the
next
question - how much is enough?
Also : I had the devil of a time with the dprintf() function. It
really does not
not treat all integers as equal. It seems that if a number was
originally
created as 'uint32' - then dprintf wont handle it correctly as an
integer. Despite
various casts and implicit type conversions.
I found two ways of dealing with the problem. Print it in a 'long
hexadecimal'
format. Or declare an integer value and assign the uint32 value to it.
Then
print the integer.
>
> I wouldn't think this has anything to do with the size of supported
> or
> installed RAM. If the mainboard chipset (or whatever is responsible)
> presents the installed memory as more than 4 disjoint physical
> address
> ranges, that would be an explanation, though.
>
I think I will keep investigating. Trying to determine how and why my
machine
comes up with 6 memory ranges. Perhaps trying to install additional RAM
and seeing what effect it may have.
NEXT: How do I enable 'multiple processors' in Haiku ?
When I clicked on 'about haiku' - it reported only 1
processor running.
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