One APIC IRQ to interrupt multiple CPU Cores

[NStoj]

Hello,

Is there a way to utilize one APIC IRQ (X2APIC) to interrupt multiple CPU Cores ?

We are using Xeon D series CPUs, and we would like to initialize one X2APIC to produce interrupt to multiple CPU Cores so we can do some synchronous operations.

If this is not possible than we need to make two separate APIC Interrupts, but if we make them at same IRQ rate can we assume that they will be synchronous to each other or there can be drift in Interrupt frequency ?

Thank you.

Best Regards,

Nikola

[SergioS_Intel]

Hello NStoj, I am going to proceed and move your thread to the Embedded Community, so you can get recommendations from fellow community members. Best regards, Sergio S. Intel Customer Support Technician Under Contract to Intel Corporation

[NStoj]

Hello @SergioS_@intel​ ,

Thank you.

Best regards,

Nikola

[NStoj]

Can someone shed light onto this subject ?

[CarlosAM_INTEL]

Hello, @NStoj​:

Thank you for contacting Intel Embedded Community.

In order to be on the same page, could you please let us know the part number of the processors related to this thread?

We are waiting for your answer.

Best regards,

@Mæcenas_INTEL​ .