Gleb Natapov wrote:
After my last patch to fix interrupt coalescing was rejected
on the basis that it is too intrusive we decided to make the
fix much more localized and only fix the problem for RTC time
source. Unfortunately it is impossible to fix the problem entirely
inside RTC code like Andrzej proposed since Windows reads RTC
register C more then once on each time interrupt so it is impossible
to count reliably how many interrupt windows actually handled.
Proposed solution is localized to I386 target and is disabled by
default. To enable it "-rtc-td-hack" flag should be used.
I truly don't understand why the time correction is done by arcane
guest-specific details like counting register reads, making interrupts
behave different from real hardware, and only correcting guests which
use particular clock sources - instead of simply warping virtual time
(in all the places it's used) which might actually work on all targets
and all guest OSes.
I don't remember anybody responding to that suggestion.
Was it a silly one?