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: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <ZtnylrkYMwzbpAl2@nvidia.com>
Date: Thu, 5 Sep 2024 11:04:06 -0700
From: Nicolin Chen <nicolinc@...dia.com>
To: Jason Gunthorpe <jgg@...dia.com>
CC: <kevin.tian@...el.com>, <will@...nel.org>, <joro@...tes.org>,
	<suravee.suthikulpanit@....com>, <robin.murphy@....com>,
	<dwmw2@...radead.org>, <baolu.lu@...ux.intel.com>, <shuah@...nel.org>,
	<linux-kernel@...r.kernel.org>, <iommu@...ts.linux.dev>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-kselftest@...r.kernel.org>,
	<eric.auger@...hat.com>, <jean-philippe@...aro.org>, <mdf@...nel.org>,
	<mshavit@...gle.com>, <shameerali.kolothum.thodi@...wei.com>,
	<smostafa@...gle.com>, <yi.l.liu@...el.com>
Subject: Re: [PATCH v2 02/19] iommufd/viommu: Add IOMMUFD_OBJ_VIOMMU and
 IOMMU_VIOMMU_ALLOC ioctl

On Thu, Sep 05, 2024 at 02:41:00PM -0300, Jason Gunthorpe wrote:

> > > > + * @out_viommu_id: Output virtual IOMMU ID for the allocated object
> > > > + *
> > > > + * Allocate a virtual IOMMU object that holds a (shared) nesting parent HWPT
> > > 
> > > Allocate a virtual IOMMU object that represents the underlying
> > > physical IOMMU's virtualization support. The vIOMMU object is a
> > > security isolated slice of the physical IOMMU HW that is unique to a
> > > specific VM. Operations global to the IOMMU are connected to the
> > > vIOMMU, such as:
> > >   - Security namespace for guest owned ID, eg guest controlled cache tags
> > >   - Virtualization of various platforms IDs like RIDs and others
> > >   - direct assigned invalidation queues
> > >   - direct assigned interrupts
> > >   - non-affiliated event reporting
> > >   - Delivery of paravirtualized invalidation
> > 
> > Ack.
> 
> Also write something about the HWPT..

Assuming it's about sharing parent HWPT, ack.

Nicolin

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ