Date: Tue, 22 Jun 2010 11:27:27 +0300 From: Kostik Belousov <kostikbel@gmail.com> To: Alexander Motin <mav@freebsd.org> Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org Subject: Re: svn commit: r209371 - in head/sys: amd64/amd64 amd64/include conf dev/acpica i386/i386 i386/include isa kern pc98/cbus sys x86/isa x86/x86 Message-ID: <20100622082727.GS13238@deviant.kiev.zoral.com.ua> In-Reply-To: <4C207078.1020607@FreeBSD.org> References: <201006202133.o5KLXTG1023067@svn.freebsd.org> <20100621195838.GJ13238@deviant.kiev.zoral.com.ua> <4C1FC6C1.5060800@FreeBSD.org> <4C1FC6E1.4080001@FreeBSD.org> <20100621203419.GK13238@deviant.kiev.zoral.com.ua> <4C1FCF93.9000703@FreeBSD.org> <20100621210629.GN13238@deviant.kiev.zoral.com.ua> <4C1FD5CC.6070909@FreeBSD.org> <20100621212719.GO13238@deviant.kiev.zoral.com.ua> <4C207078.1020607@FreeBSD.org>
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--MhDS85o8hQkNlKhq Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Jun 22, 2010 at 11:12:40AM +0300, Alexander Motin wrote: > Kostik Belousov wrote: > > On Tue, Jun 22, 2010 at 12:12:44AM +0300, Alexander Motin wrote: > >> Kostik Belousov wrote: > >>> Witness patch worked for me, and I can boot multiuser in the qemu-hos= ted > >>> system with hint.hpet.0.clock=3D0. Does the same hint should work for > >>> amd64 ? > >> Yes. > >> > >>> The issue is no longer critical for me due to hint, below is the dmesg > >>> you asked for. Thanks. > >> It is not verbose. > >=20 > > Fair enough. > >=20 > > hpet0: <High Precision Event Timer> iomem 0xfed00000-0xfed003ff on acpi0 > > hpet0: vendor 0x8086, rev 0x1, 100000000Hz 64bit, 3 timers, legacy route > > hpet0: t0: irqs 0x00000004 (0), 64bit, periodic > > hpet0: t1: irqs 0x00000004 (0), 64bit, periodic > > hpet0: t2: irqs 0x00000004 (0), 64bit, periodic > > Timecounter "HPET" frequency 100000000 Hz quality 900 >=20 > So there are three timers without FSB interrupts support. They can use > only IRQ2 (not sure if this is a good practice) and can steal IRQ0 and > IRQ8 from i8254 and RTC, when "legacy route" enabled. So the only way to > use all three timers without level-triggered interrupts is to completely > and silently brake i8254 and RTC timers. I prefer not to do it now. >=20 > Please try such a patch, it should fix QEMU panic without using hints, > while HPET timers there won't be used until they implement either FSB > interrupts or shareable level-triggred IRQ above 15: >=20 > --- acpi_hpet.c.prev 2010-06-21 23:23:45.000000000 +0300 > +++ acpi_hpet.c 2010-06-22 10:52:43.000000000 +0300 > @@ -526,6 +526,7 @@ hpet_attach(device_t dev) > t->irq =3D -2; > } else > #endif > + if (sc->irq >=3D 0) > t->caps |=3D (sc->irq << 9) | HPET_TCNF_INT_TYPE; > bus_write_4(sc->mem_res, HPET_TIMER_CAP_CNF(i), t->caps); > /* Skip event timers without set up IRQ. */ >=20 This worked as well, thank you. --MhDS85o8hQkNlKhq Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (FreeBSD) iEYEARECAAYFAkwgc+8ACgkQC3+MBN1Mb4jdKACfUrScF7iDPNAtfc/43LeDM6wJ KbgAoM9XYpktkkD+ND+u3a2E/N4mAt3j =NiGk -----END PGP SIGNATURE----- --MhDS85o8hQkNlKhq--
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