Messages in this thread | | | From | "Henning P. Schmiedehausen" <> | Subject | Re: Intel ICH5 APIC, ACPI problems in 2.4 | Date | Wed, 13 Aug 2003 08:32:46 +0000 (UTC) |
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Jeff Garzik <jgarzik@pobox.com> writes:
>I have a couple uniprocessor ICH5 systems from different vendors, with >similar behavior:
>2.6: HyperThreading works, ACPI works, all irqs properly routed
>2.4: HT works only works with ACPI enabled, but, > ACPI kills the irq routing for the external PCI slots. > pci=noacpi or whatever doesn't work. !CONFIG_ACPI + "noapic" > fixes irq routing, but then no HT sibling appears.
To give a datapoint:
ICH5 works like a breeze with RH 2.4.20-19.9 kernel:
% lspci -vt
-[00]-+-00.0 Intel Corp. 82865G [Springdale-G] Chipset Host Bridge [...] +-1f.1 Intel Corp. 82801EB ICH5 IDE [...]
% cat /proc/cpuinfo | grep -i genuine | wc -l 2
% dmesg Linux version 2.4.20-19.9smp (bhcompile@stripples.devel.redhat.com) (gcc version 3.2.2 20030222 (Red Hat Linux 3.2.2-5)) #1 SMP Tue Jul 15 17:04:18 EDT 2003 [...] ACPI: Searched entire block, no RSDP was found. ACPI: RSDP located at physical address c00f5b40 RSD PTR v0 [ACPIAM] ACPI table found: RSDT v1 [INTEL D865PERL 8195.1813] ACPI table found: FACP v2 [INTEL D865PERL 8195.1813] ACPI table found: APIC v1 [INTEL D865PERL 8195.1813] LAPIC (acpi_id[0x0001] id[0x0] enabled[1]) CPU 0 (0x0000) enabledProcessor #0 Pentium 4(tm) XEON(tm) APIC version 16 LAPIC_NMI (acpi_id[0x0001] polarity[0x0] trigger[0x0] lint[0x1]) LAPIC (acpi_id[0x0002] id[0x1] enabled[1]) CPU 1 (0x0100) enabledProcessor #1 Pentium 4(tm) XEON(tm) APIC version 16 [...]
This is an intel 865 PERLK desktop board with a 2,6 GHz HT CPU. Even the ICH5 serial ATA works which really had me impressed:
ICH5-SATA: IDE controller at PCI slot 00:1f.2 ICH5-SATA: chipset revision 2 ICH5-SATA: 100% native mode on irq 18 ide2: BM-DMA at 0xdc00-0xdc07, BIOS settings: hde:DMA, hdf:pio ide3: BM-DMA at 0xdc08-0xdc0f, BIOS settings: hdg:pio, hdh:pio hde: Maxtor 6Y120M0, ATA DISK drive hde: attached ide-disk driver. hde: host protected area => 1 hde: 240121728 sectors (122942 MB) w/7936KiB Cache, CHS=238216/16/63, UDMA(33)
(The UDMA(33) seems to be a lie, I can read ~ 57 MBytes/sec from this disk).
So there might be some patches in the RH kernel, that are missing from 2.4.22-rc2
Regards Henning
-- Dipl.-Inf. (Univ.) Henning P. Schmiedehausen INTERMETA GmbH hps@intermeta.de +49 9131 50 654 0 http://www.intermeta.de/
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