linux-kernel - Re: [PATCH 00/12] iommu: Remove IOMMU_DEV_FEAT_SVA/

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CABQgh9HTCN8mgZhUc1+oNGPK4Pcw-iuQAyiVqTYnegCq4gDfpQ@mail.gmail.com>
Date: Fri, 14 Feb 2025 17:24:42 +0800
From: Zhangfei Gao <zhangfei.gao@...aro.org>
To: Lu Baolu <baolu.lu@...ux.intel.com>
Cc: Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>, 
	Robin Murphy <robin.murphy@....com>, Jason Gunthorpe <jgg@...pe.ca>, Kevin Tian <kevin.tian@...el.com>, 
	Dave Jiang <dave.jiang@...el.com>, Vinod Koul <vkoul@...nel.org>, 
	Zhou Wang <wangzhou1@...ilicon.com>, iommu@...ts.linux.dev, 
	linux-kernel@...r.kernel.org, Jason Gunthorpe <jgg@...dia.com>, 
	Shameerali Kolothum Thodi <shameerali.kolothum.thodi@...wei.com>
Subject: Re: [PATCH 00/12] iommu: Remove IOMMU_DEV_FEAT_SVA/_IOPF

On Fri, 14 Feb 2025 at 16:43, Zhangfei Gao <zhangfei.gao@...aro.org> wrote:
>
> Hi, Baolu
>
> On Fri, 14 Feb 2025 at 14:11, Lu Baolu <baolu.lu@...ux.intel.com> wrote:
> >
> > The new method for driver fault reporting support relies on the domain
> > to specify a iopf_handler. The driver should detect this and setup the
> > HW when fault capable domains are attached.
> >
> > Move SMMUv3 to use this method and have VT-D validate support during
> > attach so that all three fault capable drivers have a no-op FEAT_SVA and
> > _IOPF. Then remove them.
> >
> > This was initiated by Jason. I'm following up to remove FEAT_IOPF and
> > further clean up.
> >
> > The whole series is also available at github:
> > https://github.com/LuBaolu/intel-iommu/commits/iommu_no_feat-v1
>
> I quickly test this branch
>
> 1. host test is OK
>
> 2. qemu boot one device, test ok,
> though reports this when guest bootup.
> vfio-pci xxx: resetting
> vfio-pci xxx: reset done
>
> 3. qemu boot multi device,  test fails, host kernel reports [Hardware Error]
> qemu can boot no problem
> Test fails.
>
> Will do more checks without these patches.

Test on 6.14-rc2 without this patch set

1. qemu boot multi device,  test OK

2. log "vfio-pci xxx: resetting/reset done" also exists.

Thanks