ChanServ changed the topic of #asahi-gpu to: Asahi Linux GPU development (no user support, NO binary reversing) | Keep things on topic | GitHub: https://alx.sh/g | Wiki: https://alx.sh/w | Logs: https://alx.sh/l/asahi-gpu
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<alyssa> poking at sparse again
<alyssa> did an abominatio to dump apple-generated page tables
<alyssa> the format is basically what I got from black box
<alyssa> apple also sets bit 30. not sure what that does
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<alyssa> but that doesn't help, something is going wrong on linux before we even get that far
<alyssa> so.. i'm kind of stuck now tbh
<alyssa> my PBE descriptors look identical
<alyssa> clearly i'm doing *something* wrong..
<alyssa> this is bizarre! it's not even making an attempt to read my page table
<alyssa> it's not that i can't workaround it, it's that this is clearly intended to work and doesn't :/
<alyssa> ooh but if I run a whole bunch of tests in sequence it tries to read it. wtf?
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<alyssa> uhh
<alyssa> block writes are attempting to read my page table, pixel writes aren't
<alyssa> umm
<alyssa> ok so maybe sparse + block writes are working fine
<alyssa> and it's just non-block writes that no
<alyssa> wait here's a no block
<alyssa> oh this is.... deeply questionable. seemingly it's accessing page tables one page before where I tell it. hahah wtf
<alyssa> umm... here it's derefing 4 pages before despite a pt size of 1 page... uhhh
<alyssa> perhaps this has the answers I seek..
<alyssa> maybe not :-/
* alyssa should probably verify this works at all on macOS
<alyssa> i think that's probably time to call it a day
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