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Hello,
I have the S2600CP server board with cpu "Intel(R) Xeon(R) CPU E5-2620 v2 @ 2.10GHz" which supports for APICv, I had patched the linux kernel source 3.18.0 to support vt-d posted interrupts on direct assigned devices, Given in lkml "http://thread.gmane.org/
I had checked the vt-d specification document[1] that describes "Remapping hardware support for interrupt-posting capability is reported through the Posted Interrupt Support (PI) field in the Capability register (CAP_REG)", In which it returns as the posted interrupt is not supported. The assigning the ixgbe network device is been done via VFIO assignment method.
Does the above hardware support vt-d posted interrupt for direct assigned device assignment or it requires any hardware to do this.
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Hi,
The key is to get the correct combination of motherboard, chipset, CPU, and software for Intel(R) VT-d to work. Here is another thread discussing about it that may provide some information for you: https://software.intel.com/en-us/forums/topic/473597?language=es
-Thai
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