ChanServ changed the topic of #asahi-dev to: Asahi Linux: porting Linux to Apple Silicon macs | General development | GitHub: https://alx.sh/g | Wiki: https://alx.sh/w | Logs: https://alx.sh/l/asahi-dev
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<rqou_> anyways, is this a correct/accurate diagram of how the DART works? https://imgur.com/a/XoGqXs6
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<rqou_> do we know anything about what DART tunables actually do?
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<sven> you still map an entire 16K page but when that subpage protection is set only that subset can actually be accessed by the device
<sven> remap allows to map an SID to another SID
<sven> and no idea what the tunables do
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<burgertron[m]> i don't know jack about linux internals, but i want to help out with asahi. how can i learn what i need to help?
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<jannau> makepkg for the linux-asahi PKGBUILD on the M1 Ultra: "43:30,97 user 3:16,57 system 1298% cpu (3:36,27 wasted time)."
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<j`ey> is 'voltage_now' in macsmc-battery an indicator of the current power consumption?
<j`ey> or maybe that's power_now? confusing
<jannau> is the label wrong? I wouldn't expect a voltage to express power consumption
<j`ey> I have no idea about this :D
<j`ey> and power_now is a negative value
<tpw_rules> it might go positive when charging
<j`ey> looks like we don't have a counter for the PSTR key, which apparently is 'entire system's power consumption in W'
<j`ey> ah maybe markan missed it because it's a float key
<j`ey> well PSCI seems to work with the deep sleep mode (it was using normal wfi before)
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<sven> nice!
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<jannau> nice, so that should give you 3.2GHz single core frequency
<j`ey> I think for that, you need a special cpuidle driver? or there needs to be more of PSCI implemented, I only have CPU ON/OFF
<j`ey> there is a CPU_SUSPEND, that might just do the same thing as CPU_OFF for us
<kettenis> OpenBSD looks at both PDTR and PSTR which are interpreted as input power and system power
<kettenis> those appear to balance fairly well when not running on battery
<jannau> the last powered core on the cluster should run at 3.2GHz, not a practical solution yet
<kettenis> j`ey: I believe you'll need to implement CPU_SUSPEND and add the idle state stuff from Documentation/devicetree/bindings/arm/idle-states.yaml in the device tree
<j`ey> makes sense. Im doing this more as a proof of concept kinda thing, so may not get there, we'll see
<kettenis> so does this mean you have the efi interface for this in u-boot implemented?
<j`ey> terribly
<kettenis> heh
<kettenis> still useful to continue the discussion with ardb I suppose
<j`ey> all u-boot does is create a configuration table and add some pages to the memory_map
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<kettenis> jannau: pushed that m1 ultra support patch to the u-boot asahi branch
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<jannau> thanks
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<diatrus> I'm unsure if this is the proper channel, but I have created a PR to the Arch Linux ARM PKGBUILD folks to solve the jemalloc issue.
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<diatrus> Unsure if I should submit the fix to the asahi PKGBUILD first rather than going through them.
<Malina[m]> diatrus: what repo is it in, `aur`, `community`, etc?
<diatrus> I submitted to archlinuxarm's PKGBUILDs repo in the "extra" section
<diatrus> Normally jemalloc is in extra iirc
<diatrus> The fun thing with jemalloc is that it supports page sizes lower than what it is compiled with, just not higher. So compiling with a 64 KiB page size will allow 16 KiB and 4 KiB to both work properly as well.
<Malina[m]> i do believe Asahi Linux wants things upstreamed so that should be fine
<Malina[m]> though that does sound like a bug
<diatrus> It's expected behavior for jemalloc currently. I can link you the discussion if you'd like
<Malina[m]> sure
<Malina[m]> if it's expected behaviour then it should be fine
<Malina[m]> but yes submit the PR to upstream if possible
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<Malina[m]> `asahi` repo stuff is if it can't be upstreamed to ALARM yet
<Malina[m]> or to the software itself like `linux`
<diatrus> https://github.com/archlinuxarm/PKGBUILDs/pull/1914 -- ALARM PR I can hope gets merged timely :)
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<Malina[m]> i'd link that issue just in case they wonder why it's being compiled for 64K pages instead of 16
<diatrus> Well I could have it compile for 16, but I am assuming at some point there may be a 64 KiB install. Might as well futureproof for that.
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