linux-kernel - Re: [git pull] IOMMU Updates for Linux v6.16

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Message-ID: <CAHk-=wguPX5w3UVmQpOk+v1ahJwRzRNXKHUJB92cwJfNpMU4ZA@mail.gmail.com>
Date: Fri, 30 May 2025 21:57:34 -0700
From: Linus Torvalds <torvalds@...ux-foundation.org>
To: Joerg Roedel <joro@...tes.org>
Cc: Will Deacon <will@...nel.org>, linux-kernel@...r.kernel.org, iommu@...ts.linux.dev
Subject: Re: [git pull] IOMMU Updates for Linux v6.16

On Fri, 30 May 2025 at 05:11, Joerg Roedel <joro@...tes.org> wrote:
>
>           - SMMUv3:

Bah. This seems very broken.

I haven't bisected it, but my arm64 build - which I sadly didn't end
up doing earlier today - breaks with modpost errors:

   ERROR: modpost: "arm_smmu_make_cdtable_ste"
[drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-test.ko] undefined!

(and the same error then repeated for arm_smmu_make_s2_domain_ste /
arm_smmu_make_s1_cd / arm_smmu_make_bypass_ste /
arm_smmu_make_abort_ste / arm_smmu_make_sva_cd / arm_smmu_get_ste_used
/ arm_smmu_write_entry / arm_smmu_get_cd_used).

I assume it's some obvious D'oh moment to whoever changed things to
cause this, but the cause isn't immediately obvious to me.

             Linus