Perhaps this is the answer:
According to their data sheets (volume 2) both Xeon D and E5 v4 have
posted_interrupts_support in vtd[0:1]_cap. E5 v3 does not.
On 12 Apr 2016, at 21:51, globalgorri...@fastmail.fm wrote:
Hello,
Are there any differences between posted interrupt support in the Xeon
E5 v3, v4, and Xeon D? The latter two are Broadwell, but posted
(external) interrupts are touted with E5 v4 while (I think) VT-d
posted interrupts are already available in E5 v3.
Thanks
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