Messages in this thread Patch in this message | | | Date | Sat, 18 Apr 2009 15:52:33 -0400 | From | Jeff Mahoney <> | Subject | Re: [BUG] IO-APIC + timer doesn't work! |
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Jan Kiszka wrote: > Jeff Mahoney wrote: >> Hi all - >> >> I saw this while booting 2.6.30-rc1, -rc2, and today's git, on one of >> my development nodes. This output is with apic=debug. With noapic, >> it still hung. Both outputs follow. >> >> git bisect leads to commit 8d6f0c8214928f7c5083dd54ecb69c5d615b516e, >> but I'm not seeing anything obvious there. Backing just that change >> out doesn't fix it.
[snip]
> Hmmmmm. That somehow reminds me of what I thought I had to fix in the > HPET emulation of QEMU just recently [1] - because of 2.6.30-rc's behavior. > > Could you try if writing 'delta' a second time makes any difference on > that box? > > diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c > index 648b3a2..523d72b 100644 > --- a/arch/x86/kernel/hpet.c > +++ b/arch/x86/kernel/hpet.c > @@ -324,6 +324,7 @@ static void hpet_set_mode(enum clock_event_mode mode, > HPET_TN_SETVAL | HPET_TN_32BIT; > hpet_writel(cfg, HPET_Tn_CFG(timer)); > hpet_writel((unsigned long) delta, HPET_Tn_CMP(timer)); > + hpet_writel((unsigned long) delta, HPET_Tn_CMP(timer)); > hpet_start_counter(); > hpet_print_config(); > break; >
Thanks, Jan.
That fixed it for me.
- -Jeff
- -- Jeff Mahoney SUSE Labs -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.9 (GNU/Linux) Comment: Using GnuPG with SUSE - http://enigmail.mozdev.org iEYEARECAAYFAknqL4EACgkQLPWxlyuTD7JGSQCfROvm+88YIifOzWNar0MOCs3F s5QAoKDi1IKw0Qrk6dky3iQ+u3sF2eAh =pgI6 -----END PGP SIGNATURE-----
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