Is there any comments with the version 3? best regards yang > -----Original Message----- > From: Zhang, Yang Z > Sent: Friday, March 02, 2012 2:59 PM > To: qemu-devel@xxxxxxxxxx > Cc: Jan Kiszka; kvm@xxxxxxxxxxxxxxx; kvm@xxxxxxxxxxxxxxx; aliguori@xxxxxxxxxx; > Paolo Bonzini; Marcelo Tosatti > Subject: [PATCH v3 0/7] RTC: New logic to emulate RTC > > Changes in v3: > Rebase to latest head. > Remove the logic to update time format when DM bit changed. > Allow to migrate from old version. > Solve the async when reading UF and UIP > > Changes in v2: > Add UIP check logic. > Add logic that next second tick will occur in exactly 500ms later after reset divider > > Current RTC emulation uses periodic timer(2 timers per second) to update RTC > clock. And it will stop CPU staying at deep C-state for long period. Our experience > shows the Pkg C6 residency reduced 6% when running 64 idle guest. > The following patch stop the two periodic timer and only updating RTC clock > when guest try to read it. > --- > Yang Zhang (7): > RTC: Remove the logic to update time format when DM bit changed > RTC: Update the RTC clock only when reading it > RTC: Add UIP(update in progress) check logic > RTC: Set internal millisecond register to 500ms when reset divider > RTC: Add RTC update-ended interrupt support > RTC: Add alarm support > RTC: Allow to migrate from old version > > hw/mc146818rtc.c | 427 > ++++++++++++++++++++++++++++++++++------------------- > 1 files changed, 274 insertions(+), 153 deletions(-) > > best regards > yang -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
