linux-kernel - Re: [PATCH] iommu/amd: Fix panic accessing amd_iommu_enable

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Message-ID: <Zmq48DZ04MDhQf0g@8bytes.org>
Date: Thu, 13 Jun 2024 11:16:32 +0200
From: Joerg Roedel <joro@...tes.org>
To: Dimitri Sivanich <sivanich@....com>
Cc: Yi Zhang <yi.zhang@...hat.com>, "Tian, Kevin" <kevin.tian@...el.com>,
	Vasant Hegde <vasant.hegde@....com>,
	Baolu Lu <baolu.lu@...ux.intel.com>,
	Suravee Suthikulpanit <suravee.suthikulpanit@....com>,
	Will Deacon <will@...nel.org>, Robin Murphy <robin.murphy@....com>,
	David Wang <00107082@....com>,
	Shinichiro Kawasaki <shinichiro.kawasaki@....com>,
	iommu@...ts.linux.dev, linux-kernel@...r.kernel.org,
	Steve Wahl <steve.wahl@....com>,
	Russ Anderson <russ.anderson@....com>
Subject: Re: [PATCH] iommu/amd: Fix panic accessing amd_iommu_enable_faulting

On Thu, May 30, 2024 at 01:36:03PM -0500, Dimitri Sivanich wrote:
> This fixes a bug introduced by commit d74169ceb0d2 ("iommu/vt-d: Allocate
> DMAR fault interrupts locally").  The panic happens when
> amd_iommu_enable_faulting is called from CPUHP_AP_ONLINE_DYN context.
> 
> Fixes: d74169ceb0d2 ("iommu/vt-d: Allocate DMAR fault interrupts locally")
> Signed-off-by: Dimitri Sivanich <sivanich@....com>
> Tested-by: Yi Zhang <yi.zhang@...hat.com>
> ---
>  drivers/iommu/amd/init.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Applied to iommu/fixes, thanks.