RE: [PATCH v2] iommu/vt-d: Allocate DMAR fault interrupts locally

[Tian, Kevin]

> From: Dimitri Sivanich <sivanich@xxxxxxx>
> Sent: Friday, March 22, 2024 4:51 AM
> 
> The Intel IOMMU code currently tries to allocate all DMAR fault interrupt
> vectors on the boot cpu.  On large systems with high DMAR counts this
> results in vector exhaustion, and most of the vectors are not initially
> allocated socket local.
> 
> Instead, have a cpu on each node do the vector allocation for the DMARs on
> that node.  The boot cpu still does the allocation for its node during its
> boot sequence.
> 
> Signed-off-by: Dimitri Sivanich <sivanich@xxxxxxx>

Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>