Hi Nate, Ah, that makes sense. Thanks! Best regards, Benjamin
On January 9, 2024 8:28:08 p.m. EST, "Desimone, Nathaniel L" <nathaniel.l.desim...@intel.com> wrote: >Hi Benjamin, > >We consider using the LAPIC as a timer to be technically superior because it >is closer to the CPU. The HPET is a PCH device, which means all access to the >timer needs go from CPU -> Home Agent -> Fabric/IO Ring -> DMI Controller -> >PCH. Using the LAPIC cuts this path to just the Home Agent. That reduces >access latency, which for a timer means higher resolution. > >Hope that helps, >Nate > >From: devel@edk2.groups.io <devel@edk2.groups.io> on behalf of Benjamin Doron ><benjamin.doro...@gmail.com> >Date: Tuesday, January 9, 2024 at 3:48 PM >To: Ma <>, Ma, Hua <hua...@intel.com>, devel@edk2.groups.io ><devel@edk2.groups.io> >Subject: Re: [edk2-devel] [PATCH] UefiPayloadPkg: Add macro to enable >selection of timer >Hi, >Are there platforms that will use this? What advantages does using the LAPIC >as a timer offer? Thanks. > >Regards, >Benjamin > -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#113508): https://edk2.groups.io/g/devel/message/113508 Mute This Topic: https://groups.io/mt/103538255/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
