linux-kernel - Re: [PATCH] iommu/sva: include mmu

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Message-ID: <a45wt3ivpwvkyarq2z7nc2fz7grqscmyrd2rzbzkkamhzpij7f@ohcswnkkqrea>
Date: Sat, 10 Jan 2026 10:40:02 +0100
From: Joerg Roedel <joro@...tes.org>
To: Carlos Llamas <cmllamas@...gle.com>
Cc: Will Deacon <will@...nel.org>, Robin Murphy <robin.murphy@....com>, 
	Jason Gunthorpe <jgg@...pe.ca>, Kevin Tian <kevin.tian@...el.com>, 
	Vasant Hegde <vasant.hegde@....com>, Lu Baolu <baolu.lu@...ux.intel.com>, 
	Andrew Morton <akpm@...ux-foundation.org>, kernel-team@...roid.com, linux-kernel@...r.kernel.org, 
	"open list:IOMMU SUBSYSTEM" <iommu@...ts.linux.dev>
Subject: Re: [PATCH] iommu/sva: include mmu_notifier.h header

On Mon, Jan 05, 2026 at 07:07:46PM +0000, Carlos Llamas wrote:
> A call to mmu_notifier_arch_invalidate_secondary_tlbs() was introduced
> in commit e37d5a2d60a3 ("iommu/sva: invalidate stale IOTLB entries for
> kernel address space") but without explicitly adding its corresponding
> header file <linux/mmu_notifier.h>. This was evidenced while trying to
> enable compile testing support for IOMMU_SVA:
> 
>    config IOMMU_SVA
>           select IOMMU_MM_DATA
>   -       bool
>   +       bool "Shared Virtual Addressing" if COMPILE_TEST

This patch should be part of a patch-set which does the above. As-is, this does
not qualify as a fix or a standalone change.

-Joerg