linux-kernel - RE: [PATCH v1] iommu/vt-d: Remove the redundant logic in first_level_by

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Message-ID: <BN9PR11MB5276C8692C706B0BEE83833E8C98A@BN9PR11MB5276.namprd11.prod.outlook.com>
Date: Fri, 23 May 2025 08:15:55 +0000
From: "Tian, Kevin" <kevin.tian@...el.com>
To: "Wang, Wei W" <wei.w.wang@...el.com>, "baolu.lu@...ux.intel.com"
	<baolu.lu@...ux.intel.com>, "Liu, Yi L" <yi.l.liu@...el.com>,
	"dwmw2@...radead.org" <dwmw2@...radead.org>, "jroedel@...e.de"
	<jroedel@...e.de>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, "iommu@...ts.linux.dev"
	<iommu@...ts.linux.dev>
Subject: RE: [PATCH v1] iommu/vt-d: Remove the redundant logic in
 first_level_by_default()

> From: Wang, Wei W <wei.w.wang@...el.com>
> Sent: Friday, May 23, 2025 4:11 PM
> 
> This original implementation included redundant logic to determine whether
> first-stage translation should be used by default. Simplify it and
> preserve the original behavior:
> - Returns false in legacy mode (no scalable mode support).
> - Defaults to first-level translation when both FLTS and SLTS are
>   supported.
> 
> Signed-off-by: Wei Wang <wei.w.wang@...el.com>

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