Date: Tue, 22 Jun 2010 19:42:27 +0000 (UTC) From: Alexander Motin <mav@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/dev/acpica acpi_hpet.c src/sys/x86/isa atrtc.c clock.c Message-ID: <201006221943.o5MJhAmH064114@repoman.freebsd.org>
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mav 2010-06-22 19:42:27 UTC
FreeBSD src repository
Modified files:
sys/dev/acpica acpi_hpet.c
sys/x86/isa atrtc.c clock.c
Log:
SVN rev 209440 on 2010-06-22 19:42:27Z by mav
Add "legacy route" support to HPET driver. When enabled, this mode makes
HPET to steal IRQ0 from i8254 and IRQ8 from RTC timers. It can be suitable
for HPETs without FSB interrupts support, as it gives them two unshared
IRQs. It allows them to provide one per-CPU event timer on dual-CPU system,
that should be suitable for further tickless kernels.
To enable it, such lines may be added to /boot/loader.conf:
hint.atrtc.0.clock=0
hint.attimer.0.clock=0
hint.hpet.0.legacy_route=1
Revision Changes Path
1.24 +74 -38 src/sys/dev/acpica/acpi_hpet.c
1.4 +16 -15 src/sys/x86/isa/atrtc.c
1.7 +16 -13 src/sys/x86/isa/clock.c
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