VT-d posted interrupts support


reswara1@...
 

Hello,

I am looking forward to buying intel embedded SoC that supports VT-d posted interrupts. There are a lot of intel processors used for embedded systems that support VT-d. 

Q1) Does VT-d support guarantees VT-d posted interrupts mechanism?

Q2) If not, what are the intel embedded processors that support VT-d posted interrupt mechanism?

Thank you so much for your help in advance! 


Li, Fei1
 

On Sun, Jan 17, 2021 at 08:46:43AM -0800, reswara1@binghamton.edu wrote:
Hello,
Hi

I am looking forward to buying intel embedded SoC that supports VT-d posted
interrupts. There are a lot of intel processors used for embedded systems that
support VT-d.

Q1) Does VT-d support guarantees VT-d posted interrupts mechanism?
No, VT-d hardware could support Interrupt Remapping or Interrupt Posting or both of them.


Q2) If not, what are the intel embedded processors that support VT-d posted
interrupt mechanism?
Interrupt posting includes hardware support for optimized processing of interrupt requests from I/O
devices (Physical Functions, SR-IOV Virtual Functions, or Intel® Scalable IOV Assignable Device
Interfaces (ADIs)) that are directly assigned to a virtual machine.

Thanks.


Thank you so much for your help in advance!


reswara1@...
 

First of all, thank you for your insights!

ACRN paper described that it used Intel Celeron Processor J3455 and the hardware doesn't support the posted-interrupt feature. 

Can you please let me know the intel processor (Eg. ATOM or XEON or anything specific) that supports this posted-interrupt feature?