On Tue, January 16, 2007 11:56, Ingo Molnar wrote: > > * Rui Nuno Capela <[email protected]> wrote: > >> First one is about building for UP (CONFIG_SMP not set) on my old P4 >> laptop. As it seems, all my build attempts failed at the final link >> stage, with undefined references to paravirt_enable. After disabling >> CONFIG_PARAVIRT I get a similar failure, but this time for a couple >> kvm* symbols. [...] > > ok, i think i have managed to fix both bugs. I have released -rt3, > please re-check whether it works any better. If it still doesnt then > please send me the exact .config that fails. > Building this already with -rt5, still gives: ... LD arch/i386/boot/compressed/vmlinux OBJCOPY arch/i386/boot/vmlinux.bin BUILD arch/i386/boot/bzImage Root device is (3, 2) Boot sector 512 bytes. Setup is 7407 bytes. System is 1427 kB Kernel: arch/i386/boot/bzImage is ready (#1) WARNING: "profile_hits" [drivers/kvm/kvm-intel.ko] undefined! WARNING: "profile_hits" [drivers/kvm/kvm-amd.ko] undefined! make[1]: *** [__modpost] Error 1 make: *** [modules] Error 2 ... .config as .gz is attached. > >> Second one is already about running SMP, on a Dual Core2 T7200, for >> which the build goes fine but run-time is haunted by a crippling BUG: > >> Call Trace: >> [<c0102dad>] __switch_to+0xcc/0x176 >> [<c01185c8>] wake_up_process+0x19/0x1b >> [<c01fe568>] acpi_ec_gpe_handler+0x1f/0x53 >> [<c01ec6c6>] acpi_ev_gpe_dispatch+0x64/0x163 >> [<c01eca06>] acpi_ev_gpe_detect+0x94/0xd7 >> > > hm, this is a -rt specific thing that i hoped to have worked around but > apparently not. The ACPI code uses a waitqueue in its idle routine > (argh!) which cannot by done sanely on PREEMPT_RT. In -rt3 i've added > a more conservative (but still ugly and incorrect) hack - could you try > it, does -rt3 work any better? > Yes it does. No BUG has been spotted on -rt3, yet. Cheers. -- rncbc aka Rui Nuno Capela [email protected]
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