http://bugzilla.kernel.org/show_bug.cgi?id=5303
------- Additional Comments From [EMAIL PROTECTED] 2006-02-01 11:40 ------- Rahul, the MSR you mentioned is c001_0055h, right? Its value (read through /dev/cpu/0/msr) is 0x33300b0, which means that on a pending interrupt the processor will write 0x33 to I/O port 0xb0; this is indeed this BIOSs (or chipsets?) SMI port. This indicates that the BIOS took pending interrupts into account. However, bit 24 is also set, which means that no Interrupt Pending Message is actually generated. So I set bit 24 to 0 and lo and behold! no longer lost ticks. I then set bit 25 to 0 so that instead of an I/O write the processor would send an INT_PENDING hypertransport message to the southbridge. Again, no lost ticks. So the southbridge seems to support INT_PENDING. This seems safer to me because I dont know whether the SMM routine which handles the I/O write can cope with SMIs arriving during its execution. My highly scientific tests (surfing the internet and playing mp3s with these settings) showed no problem at all; apparently this is indeed a BIOS bug. Rahul, thank you very much for your help, your assistance has been invaluable. Andi, should I close this bug as INVALID? ------- You are receiving this mail because: ------- You are on the CC list for the bug, or are watching someone who is. ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=103432&bid=230486&dat=121642 _______________________________________________ acpi-bugzilla mailing list acpi-bugzilla@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla
