TODO revision 1.25.2.3
1 1.25.2.3 pgoyette /* $NetBSD: TODO,v 1.25.2.3 2018/12/26 14:01:43 pgoyette Exp $ */ 2 1.1 palle 3 1.1 palle Things to be done: 4 1.1 palle 5 1.5 palle common: 6 1.5 palle - make %g6 point to curcpu 7 1.5 palle - make %g7 point to curlwp 8 1.8 palle - change run-time checks for cpu type to function pointers 9 1.5 palle 10 1.1 palle sun4u: 11 1.10 palle - GENERIC.UP kernel hangs on v445 (missing interrupt?) 12 1.1 palle 13 1.1 palle sun4v: 14 1.25.2.1 pgoyette - current status: The kernel boots and starts the init process (pid 1) 15 1.25.2.3 pgoyette which spawns /sbin/sh (pid 2). This is forked as a new /sbin/sh (pid 3) 16 1.25.2.3 pgoyette which crashes, probably due to MMU DPROT issues. 17 1.25.2.3 pgoyette Looks like the user process tries to write to the stack as part of a save 18 1.25.2.3 pgoyette instruction since cansave is zero. This causes a DMMU PROT trap (0x6c) which 19 1.25.2.3 pgoyette calls sun4v_tl0_dtsb_prot which calls sun4v_datatrap which calls TRAP_SETUP(). 20 1.25.2.3 pgoyette This macro has code that does a save instruction, again to the user stack, 21 1.25.2.3 pgoyette which again causes a MMU DPROT trap... 22 1.1 palle - 64-bit kernel support 23 1.1 palle - 32-bit kernel support 24 1.2 palle - libkvm 25 1.2 palle - ofwboot: tlb_init_sun4v() hardcodes number of slots to 64 26 1.17 palle - locore.s: sun4v_datatrap missing implementation for trap level 1 27 1.5 palle - check build without SUN4V defined 28 1.13 palle - replace relevant references to %ver with GET_MAXCWP 29 1.6 palle - pmap_mp_init(): sun4v missing handling 30 1.6 palle - replace constructs like "wrpr %g0, PSTATE_KERN, %pstate" with NORMAL_GLOBALS 31 1.6 palle - replace constructs line "wrpr %g0, PSTATE_INTR, %pstate" with ALTERNATE_GOBALS 32 1.7 palle - sun4v tsb no need to lock... per cpu... anyway... 33 1.7 palle - ci_tsb_desc->td_ctxidx: -1 or 1? 34 1.14 palle - MP support - currently bypassed in pmap_bootstrap() for sun4v 35 1.12 palle - vpci.c/vpcivar.h: cleanup FIXMEs 36 1.16 palle - interrups not handled properly (com at ebus only...) 37 1.18 palle - mpt(4) complains: mpt0: Phy 0: Link Status Unknown 38 1.20 palle - man pages for drivers imported from OpenBSD lke vpci, vbus, cbus, vdsk, ldc etc. 39 1.20 palle - vdsk and ldc drivers: code maked with OPENBSD_BUSDMA - make the bus_dma stuff work properly 40 1.22 palle - vbus.c: handle prom_getprop() memory leaks 41 1.25 palle - locore.s: rft_user (sun4v specific manaul fill) - seems to work, but is it good enough (compared to openbsds rft_user? 42 1.25.2.2 pgoyette - platforms tested so far: 43 1.25.2.2 pgoyette -- qemu sun4v/niagara - crash in init process relaed to fork (stack?) 44 1.25.2.2 pgoyette -- T2000 - mmu fault somewhere 45 1.25.2.2 pgoyette -- T5 - stickcmpr is not properly initialized ??? 46
Indexes created Thu Oct 23 22:10:10 GMT 2025