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GeoHot Releases Sample PS3 Linux Isolated SPU Loader Code


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242w ago - Today GeoHot has released sample PS3 Linux isolated SPU loader code for those with OtherOS to experiment with.

To quote: "Right now, I'm playing with the isolated SPEs, trying to get metldr to load from OtherOS. Interesting thing, I am not using the exploit. I always assumed the enable isolation mode register was hypervisor privileged.

It's not, it's kernel privileged, which means using hypervisor calls you can all get to it. So, get to hacking. [Register or Login to view links] is the code I am playing with.

I'm not that opposed to releasing the exploit, but I think the majority of you are going to be disappointed, even if you do get it working. Unless you have pushed the HV to it's limits, this exploit really isn't going to do much for you... yet.

So install OtherOS and start playing around. If people start coming up with convincing reasons why they need the exploit to go further, I'll release it. It's just a waste to release if people can't make use of it.

As far as the GPU goes, I have full access to the GPU memory space 0x2800... But without a driver, it's useless. 3D video card drivers are notoriously hard to write, look at the ATI and NVIDIA ones for linux. The best are still the closed source manufacturer ones.

I'm not even sure I believe that the HV restricts video card access, just that the OtherOS driver is 2D. If someone skilled in video card driver development comes forward, and they can explain in detail what the HV is restricting, I'll send them the exploit."



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Comments 44 Comments - Go to Forum Thread »

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kingeasynow's Avatar
#34 - kingeasynow - 242w ago
No, it's really him.. he was here for awhile (before his PS3 blog anyway) and made another post when he was first getting into the PS3.
Sound I just posted on his blog saying someone had posted under his name and informed him I was making him aware as one of the devs here had replied.

Panic over I suppose!

Cheers for the info.

firrpo's Avatar
#33 - firrpo - 242w ago
Looking at Geohot's own blog somebody else appears to have posted as him, perhaps the comment made on here is another imposter, or perhaps not?
yeah i noticed that too.. seems like this is getting out of hand

PS3 News's Avatar
#32 - PS3 News - 242w ago
Looking at Geohot's own blog somebody else appears to have posted as him, perhaps the comment made on here is another imposter, or perhaps not?
No, it's really him.. he was here for awhile (before his PS3 blog anyway) and made another post when he was first getting into the PS3.

kingeasynow's Avatar
#31 - kingeasynow - 242w ago
Looking at Geohot's own blog somebody else appears to have posted as him, perhaps the comment made on here is another imposter, or perhaps not?

Strikersama's Avatar
#30 - Strikersama - 242w ago
Geohot is something, and now we can wait for time when geohot finaly open pandoras box. ps3 must to be open no matter what and geohot is right guy to do it. I need homebrew and gpu driver for linux, pls do your work to the end.

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