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When I finally accepted there really is 240MiB RAM available to "Other OS" using PS3 Linux (took some convincing, thanks btw), then a smiling Kaz along with the other fools at $ony decide to remove it. I sure hope they will continue to support "Other OS" on the "old hardware...

Ok, my mistake, I was wrong. It is starting to make sense now (after checking memory_hotplug.c in the kernel source). Still, I don't get the "112MiB math part", is the address range in /proc/iomem wrong? 0effffff-08000000 = 6FFFFFF (117440511 Bytes) EDIT: Never mind, a Mebibyte is 1,048,57...

jimparis wrote:

/proc/iomem looks like this:
08000000-0effffff : System RAM

Do the math. That's the extra 112MiB, as registered by the memory hotplug subsystem.

You are wrong. That is the initial RAM, check the 'dmesg' output.

This is kernel 2.6.27. Anyway, back to square one (or my first post in this thread rather). Thanks for the help.

If any admin read this, please move the thread to the PS3 linux forum.

Ok, so if I understand this correctly; under ps3 linux (YDL 6.1, which was my initial question) any C code just using malloc() or calloc() will never allocate memory in this 112M segment unless specifically programmed to do so? BTW: /proc/iomem looks like this: 08000000-0effffff : System RAM...

Explain to me how to do that please.

The Emperor's new 112 MiB.

I got a partial answer. The memory allocated by resident parts of the PS3 OS while playing games was 74mb at firmware v1.80 according to developers (Naughty Dog), assuming the same goes for "Other OS".

Yes, I will do that, and more importantly read the kernel source to try and figure out how /proc/meminfo is calculated. My question initially was to avoid doing just that. ;) Without knowing anything I can tell by clean booting ps3 linux and just using it that there is less free memory than it shoul...

On a PC system the BIOS provides a physical RAM map when booting linux, something like this (dmesg from a PC nearby): BIOS-e820: 0000000000000000 - 00000000000a0000 (usable) BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved) BIOS-e820: 0...

The total memory (RAM) available when booting YDL 6.1 on a PS3 is roughly 131MB according to 'dmesg' output. Top of RAM: 0x8000000, Total RAM: 0x8000000 ... Memory: 96832k/131072k available (8404k kernel code, 34240k reserved, 1100k data, 472k bss, 376k init) ...

radad,

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Oh humble admins, please show mercy by killing this thread.

The xbox "signing code" for the BIOS was cracked by bunnie, he extracted the rc4 key to decrypt the flash ROM (BIOS). bunnie achieved this by designing a tap board he later soldered on the LDT (HyperTransport) bus. He coded a program which looped through the tapped data to using a key leng...