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Hi, > The TSC in the Cyrix/IBM 6x86MX is _not_ broken, it works just like a > Pentium TSC when Suspend-on-Halt is not enabled explicitly. > > This behaviour is independent of chip revision i.e. ALL Cyrix/IBM 6x86MX > chip revisions (including the new MII) will stop the TSC when entering a > Halt state IFF Suspend-on-Halt is enabled explicitly (it is normally > disabled). > .... > BTW I wrote Cyrix about the 6x86MX TSC behaviour and they acknowledged > this difference between their CPUs and the standard Pentium behaviour. > Future MII revision will be changed so that the TSC keeps running even > when the CPU is Halted _and_ Suspend-on-Halt is enabled, at the cost of > a few extra mW dissipated. Did anybody think of this possible patch, considering that do_fast_gettimeoffset should not be called too often: Disable Suspend-on-Halt when do_fast_gettimeoffset() has been called for less than few (for instance 20) clock ticks ? Just an idea, I do not have a Cyrix, Etienne. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu | ||||||||||||
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