Messages in this thread |  | | Date | Fri, 14 Sep 2001 20:17:05 +0200 (MET DST) | From | jurij@euroseek ... | Subject | VIA IDE and SMP do not work together (2.2.19 ide patch) |
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Hi!
Recently we've been trying to install linux on a machine with Tyan S2507 Tiger 230 2-processor motherboard with a VIA Apollo Pro 133A chipset (particularly, VIA IDE controller VT82C686B). We have tried 2.2.19 kernel with ide patch dated 05042001 from
http://www.kernel.org/pub/linux/kernel/people/hedrick/ide-2.2.19/
It turns out, that when both the support for VIA82CXXXX chipset and SMP are enabled, the machine refuses to boot, it hangs right after the lines
hda: IC35L060AVER07-0, ATA DISK drive hdb: SAMSUNG CD-ROM SC-152C, ATAPI CDROM drive hdc: IC35L060AVER07-0, ATA DISK drive
(I am not quite sure, which line is actually the last, but I could check that if needed)
However, if one disables either SMP or VIA82CXXXX chipset support (keeping "Generic PCI IDE chipset support", "Generic PCI bus-master DMA support" and "Use DMA by default when available"), then the machine boots ok. In the latter case one still can achieve full disk performance by issuing "hdparm -c1d1X69 /dev/hda", after that "hdparm -t" reports around 32-33 MB/sec, however a message like "ide0: Speed warnings UDMA 3/4/5 is not functional." appears in the logs. Full dmesg from such a boot is available at
http://www.theophys.kth.se/~jurijus/dmesg
Another strange feature is a message
"WARNING: unexpected IO-APIC, please mail to linux-smp@vger.kernel.org"
Thus, few questions arise:
1. Should one try some other version of kernel/patch/whatever to make VIA82CXXXX and SMP work together? 2. Is it worth it? What's the advantage of using VIA82CXXXX chipset support? It seems like we are getting maximum disk performance even without it, just with "Generic PCI IDE chipset support" provided by the patch. 3. What's that "Speed warnings" message from hdparm? 4. Should one worry about the "unexpected IO-APIC"? It does not seem to affect the SMP functionality, what does it actually mean?
Best regards and TIA,
Jurij.
P.S. Please CC the responses to me, because I'm not subscribed.
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