From: Jason Gunthorpe <jgg@nvidia.com>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Anthony Krowiak <akrowiak@linux.ibm.com>,
Alex Williamson <alex.williamson@redhat.com>,
Bagas Sanjaya <bagasdotme@gmail.com>,
Lu Baolu <baolu.lu@linux.intel.com>,
Chaitanya Kulkarni <chaitanyak@nvidia.com>,
Cornelia Huck <cohuck@redhat.com>,
Jonathan Corbet <corbet@lwn.net>,
Daniel Jordan <daniel.m.jordan@oracle.com>,
David Gibson <david@gibson.dropbear.id.au>,
Eric Auger <eric.auger@redhat.com>,
Eric Farman <farman@linux.ibm.com>,
iommu@lists.linux.dev, Jason Wang <jasowang@redhat.com>,
Jean-Philippe Brucker <jean-philippe@linaro.org>,
Jason Herne <jjherne@linux.ibm.com>,
Joao Martins <joao.m.martins@oracle.com>,
Kevin Tian <kevin.tian@intel.com>,
kvm@vger.kernel.org, Lixiao Yang <lixiao.yang@intel.com>,
Matthew Rosato <mjrosato@linux.ibm.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
Nicolin Chen <nicolinc@nvidia.com>,
Halil Pasic <pasic@linux.ibm.com>,
Niklas Schnelle <schnelle@linux.ibm.com>,
Shameerali Kolothum Thodi <shameerali.kolothum.thodi@huawei.com>,
Yi Liu <yi.l.liu@intel.com>, Yu He <yu.he@intel.com>,
Keqian Zhu <zhukeqian1@huawei.com>
Subject: Re: [PATCH v6 16/19] iommufd: Add kernel support for testing iommufd
Date: Mon, 22 Apr 2024 08:54:35 -0300 [thread overview]
Message-ID: <20240422115435.GB45353@nvidia.com> (raw)
In-Reply-To: <6860aa59-3a8b-74ca-3c33-2f3ec936075@linux-m68k.org>
On Mon, Apr 22, 2024 at 09:27:18AM +0200, Geert Uytterhoeven wrote:
> > +if IOMMUFD
> > +config IOMMUFD_TEST
> > + bool "IOMMU Userspace API Test support"
> > + depends on DEBUG_KERNEL
> > + depends on FAULT_INJECTION
> > + depends on RUNTIME_TESTING_MENU
> > + default n
> > + help
> > + This is dangerous, do not enable unless running
> > + tools/testing/selftests/iommu
> > +endif
>
> How dangerous is this?
> I.e. is it now unsafe to run an allyesconfig or allmodconfig kernel?
Depends what you mean by unsafe? This is less unsafe than /dev/mem,
for instance.. It does nothing unless poked by userspace.
> Probably this symbol should be tristate?
It is not a seperate module.
Jason
next prev parent reply other threads:[~2024-04-22 11:54 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-29 20:29 [PATCH v6 00/19] IOMMUFD Generic interface Jason Gunthorpe
2022-11-29 20:29 ` Jason Gunthorpe
2022-11-29 20:29 ` [PATCH v6 01/19] iommu: Add IOMMU_CAP_ENFORCE_CACHE_COHERENCY Jason Gunthorpe
2022-11-29 20:29 ` Jason Gunthorpe
2022-11-29 20:29 ` [PATCH v6 02/19] iommu: Add device-centric DMA ownership interfaces Jason Gunthorpe
2022-11-29 20:29 ` Jason Gunthorpe
2022-11-29 20:29 ` [PATCH v6 03/19] interval-tree: Add a utility to iterate over spans in an interval tree Jason Gunthorpe
2022-11-29 20:29 ` Jason Gunthorpe
2022-11-29 20:29 ` [PATCH v6 04/19] scripts/kernel-doc: support EXPORT_SYMBOL_NS_GPL() with -export Jason Gunthorpe
2022-11-29 20:29 ` Jason Gunthorpe
2022-11-29 20:29 ` [PATCH v6 05/19] iommufd: Document overview of iommufd Jason Gunthorpe
2022-11-29 20:29 ` Jason Gunthorpe
2022-11-29 20:29 ` [PATCH v6 06/19] iommufd: File descriptor, context, kconfig and makefiles Jason Gunthorpe
2022-11-29 20:29 ` Jason Gunthorpe
2022-11-30 14:02 ` Eric Auger
2022-12-04 10:58 ` Binbin Wu
2022-11-29 20:29 ` [PATCH v6 07/19] kernel/user: Allow user::locked_vm to be usable for iommufd Jason Gunthorpe
2022-11-29 20:29 ` Jason Gunthorpe
2022-11-29 20:42 ` Michael S. Tsirkin
2022-11-29 20:48 ` Jason Gunthorpe
2022-11-29 21:10 ` Michael S. Tsirkin
2022-11-29 20:29 ` [PATCH v6 08/19] iommufd: PFN handling for iopt_pages Jason Gunthorpe
2022-11-29 20:29 ` Jason Gunthorpe
2022-12-05 15:58 ` Binbin Wu
2022-12-06 20:53 ` Jason Gunthorpe
2022-12-06 12:36 ` Binbin Wu
2022-12-06 20:57 ` Jason Gunthorpe
2022-11-29 20:29 ` [PATCH v6 09/19] iommufd: Algorithms for PFN storage Jason Gunthorpe
2022-11-29 20:29 ` Jason Gunthorpe
2022-11-29 20:29 ` [PATCH v6 10/19] iommufd: Data structure to provide IOVA to PFN mapping Jason Gunthorpe
2022-11-29 20:29 ` Jason Gunthorpe
2022-11-29 20:29 ` [PATCH v6 11/19] iommufd: IOCTLs for the io_pagetable Jason Gunthorpe
2022-11-29 20:29 ` Jason Gunthorpe
2022-11-30 14:04 ` Eric Auger
2022-11-29 20:29 ` [PATCH v6 12/19] iommufd: Add a HW pagetable object Jason Gunthorpe
2022-11-29 20:29 ` Jason Gunthorpe
2022-11-29 20:29 ` [PATCH v6 13/19] iommufd: Add kAPI toward external drivers for physical devices Jason Gunthorpe
2022-11-29 20:29 ` Jason Gunthorpe
2022-11-29 20:29 ` [PATCH v6 14/19] iommufd: Add kAPI toward external drivers for kernel access Jason Gunthorpe
2022-11-29 20:29 ` Jason Gunthorpe
2022-11-29 20:29 ` [PATCH v6 15/19] iommufd: vfio container FD ioctl compatibility Jason Gunthorpe
2022-11-29 20:29 ` Jason Gunthorpe
2022-11-29 20:29 ` [PATCH v6 16/19] iommufd: Add kernel support for testing iommufd Jason Gunthorpe
2022-11-29 20:29 ` Jason Gunthorpe
2024-04-22 7:27 ` Geert Uytterhoeven
2024-04-22 11:54 ` Jason Gunthorpe [this message]
2024-04-22 12:48 ` Geert Uytterhoeven
2024-04-22 12:50 ` Jason Gunthorpe
2022-11-29 20:29 ` [PATCH v6 17/19] iommufd: Add some fault injection points Jason Gunthorpe
2022-11-29 20:29 ` Jason Gunthorpe
2022-11-29 20:29 ` [PATCH v6 18/19] iommufd: Add additional invariant assertions Jason Gunthorpe
2022-11-29 20:29 ` Jason Gunthorpe
2022-11-29 20:29 ` [PATCH v6 19/19] iommufd: Add a selftest Jason Gunthorpe
2022-11-29 20:29 ` Jason Gunthorpe
2022-11-30 7:14 ` Yi Liu
2022-11-30 13:51 ` Jason Gunthorpe
2022-11-30 17:18 ` Eric Auger
2022-12-01 0:13 ` Jason Gunthorpe
2022-12-01 4:59 ` Yi Liu
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20240422115435.GB45353@nvidia.com \
--to=jgg@nvidia.com \
--cc=akrowiak@linux.ibm.com \
--cc=alex.williamson@redhat.com \
--cc=bagasdotme@gmail.com \
--cc=baolu.lu@linux.intel.com \
--cc=chaitanyak@nvidia.com \
--cc=cohuck@redhat.com \
--cc=corbet@lwn.net \
--cc=daniel.m.jordan@oracle.com \
--cc=david@gibson.dropbear.id.au \
--cc=eric.auger@redhat.com \
--cc=farman@linux.ibm.com \
--cc=geert@linux-m68k.org \
--cc=iommu@lists.linux.dev \
--cc=jasowang@redhat.com \
--cc=jean-philippe@linaro.org \
--cc=jjherne@linux.ibm.com \
--cc=joao.m.martins@oracle.com \
--cc=kevin.tian@intel.com \
--cc=kvm@vger.kernel.org \
--cc=lixiao.yang@intel.com \
--cc=mjrosato@linux.ibm.com \
--cc=mst@redhat.com \
--cc=nicolinc@nvidia.com \
--cc=pasic@linux.ibm.com \
--cc=schnelle@linux.ibm.com \
--cc=shameerali.kolothum.thodi@huawei.com \
--cc=yi.l.liu@intel.com \
--cc=yu.he@intel.com \
--cc=zhukeqian1@huawei.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.