Re: [PATCH RFC 04/13] iommu/vt-d: Add helper and flag to check/disable posted MSI
From: Thomas Gleixner
Date: Wed Dec 06 2023 - 11:49:10 EST
On Sat, Nov 11 2023 at 20:16, Jacob Pan wrote:
> Allow command line opt-out posted MSI under CONFIG_X86_POSTED_MSI=y.
> And add a helper function for testing if posted MSI is supported on the
> CPU side.
That's backwards. You want command line opt-in first and not enforce
this posted muck on everyone including RT which will regress and suffer
from that.