Thursday, 2023-02-16

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lkcltoshywoshy, ping, ISA WG08:03
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lkclmarkos, mornin/evenin14:50
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markoslkcl, evening :)15:53
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Ryuno-KiAndrJaenUniversal Greeting Time ftw16:13
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sadoon[m]lkcl: I'm not sure if you got my pm, hopefully the IRC bridge works correctly, if you didn't get it please let me know because it's important21:11
sadoon[m]In other news, gentoo is booting now with p9 optimizations enable :D21:33
sadoon[m]This will be the base for all the rest of the porting work21:33
sadoon[m]Since I didn't mention this earlier, the goal is to have a full desktop OS built on gentoo with all the typical software needed with p9 optimizations, and then do a full rebuild targeting sffs instead of doing that from the start.21:38
sadoon[m]This will hopefully help identify where issues come from once they arise21:38
* lkcl salutes Ryuno-KiAndrJaen22:36
lkclsadoon[m], yes it did. got it ty.22:36
sadoon[m]Awesome22:37
lkclawesome, start from a known-good position. in theory you should be able to recompile one package at a time22:37
sadoon[m]There's no need to recompile one at a time of course. I could do the whole thing once I have a stable desktop running22:37
lkcli meant, you could - and see what breaks (individually) by cherry-picking one [recompiled, sffs] package at a time and dropping them in as replacements into the -mpower9 one23:26
lkclof course, what is ultimately needed is to switch *off* VSX entirely in qemu. that's the ultimate test23:27
sadoon[m]And one that I plan to do very soon :D23:31
sadoon[m]I just hope it's possible without too much digging into qemu source code, like discussed previously way back, on intel it's extremely easy to do23:32
sadoon[m]Actually while it's building xfce I'll take a look now23:32
lkclsadoon[m], toshywoshy did it, absolutely no problem whatsoever. there will be a runtime command-line option to pick a specific machine to emulate - that doesn't have vsx.23:38
sadoon[m]Awesome, I'll ask him for the flags then later23:39
sadoon[m]It looks like "qemu.. -cpu power9,-vsx* .. etc23:39
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sadoon[m]Ah, ppc qemu doesn't support cpuid flags..23:43
sadoon[m]The options are either like you said, finding a model that doesn't include vsx but also complies with our ISA version, or build a custom CPU definition inside qemu23:44
sadoon[m]This might be difficult since ISA v3.0 is on POWER9 and newer, but I'll wait to see what toshywoshy has to say since he tried it already23:52

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