linux-kernel - Re: [PATCH 0/3] iommu/amd: Fix booting with amd

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Message-ID: <20210317104850.GB2508995@hr-amd>
Date:   Wed, 17 Mar 2021 18:48:50 +0800
From:   Huang Rui <ray.huang@....com>
To:     Joerg Roedel <joro@...tes.org>
Cc:     "iommu@...ts.linux-foundation.org" <iommu@...ts.linux-foundation.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Suthikulpanit, Suravee" <Suravee.Suthikulpanit@....com>,
        "Deucher, Alexander" <Alexander.Deucher@....com>,
        "Du, Xiaojian" <Xiaojian.Du@....com>,
        David Woodhouse <dwmw2@...radead.org>,
        Joerg Roedel <jroedel@...e.de>
Subject: Re: [PATCH 0/3] iommu/amd: Fix booting with amd_iommu=off

On Wed, Mar 17, 2021 at 05:10:34PM +0800, Joerg Roedel wrote:
> From: Joerg Roedel <jroedel@...e.de>
> 
> Hi,
> 
> it turned out that booting a kernel with amd_iommu=off on a machine
> that has an AMD IOMMU causes an early kernel crash. There are two
> reasons for this, and fixing one of them is already sufficient, but
> both reasons deserve fixing, which is done in this patch-set.
> 
> Regards,
> 
> 	Joerg
> 
> Joerg Roedel (3):
>   iommu/amd: Move Stoney Ridge check to detect_ivrs()
>   iommu/amd: Don't call early_amd_iommu_init() when AMD IOMMU is
>     disabled
>   iommu/amd: Keep track of amd_iommu_irq_remap state

Series are Acked-by: Huang Rui <ray.huang@....com>

> 
>  drivers/iommu/amd/init.c | 36 ++++++++++++++++++++----------------
>  1 file changed, 20 insertions(+), 16 deletions(-)
> 
> -- 
> 2.30.2
>