From: Ankit Agrawal <ankita@nvidia.com>
To: Alex Williamson <alex.williamson@redhat.com>,
Jason Gunthorpe <jgg@nvidia.com>
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<linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH v7 4/4] vfio: convey kvm that the vfio-pci device is wc safe
Date: Tue, 13 Feb 2024 01:59:45 +0000 [thread overview]
Message-ID: <SA1PR12MB7199C6C925FD78EE3827BF6BB04F2@SA1PR12MB7199.namprd12.prod.outlook.com> (raw)
In-Reply-To: <20240212102718.07543659.alex.williamson@redhat.com>
>> IP requires platform integration to take responsibility to prevent
>> this.
>>
>> To safely use VFIO in KVM the platform must guarantee full safety
>> in the guest where no action taken against a MMIO mapping can
>> trigger an uncontainer failure. We belive that most VFIO PCI
>> platforms support this for both mapping types, at least in common
>> flows, based on some expectations of how PCI IP is integrated. This
>> can be enabled more broadly, for instance into vfio-platform
>> drivers, but only after the platform vendor completes auditing for
>> safety.
>
> I like it, please incorporate into the next version.
Yes, will fix the typos and add it.
next prev parent reply other threads:[~2024-02-13 1:59 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-11 17:47 [PATCH v7 0/4] kvm: arm64: allow the VM to select DEVICE_* and NORMAL_NC for IO memory ankita
2024-02-11 17:47 ` [PATCH v7 1/4] kvm: arm64: introduce new flag for non-cacheable " ankita
2024-02-11 17:47 ` [PATCH v7 2/4] mm: introduce new flag to indicate wc safe ankita
2024-02-12 13:13 ` David Hildenbrand
2024-02-13 3:41 ` Ankit Agrawal
2024-02-11 17:47 ` [PATCH v7 3/4] kvm: arm64: set io memory s2 pte as normalnc for vfio pci device ankita
2024-02-11 17:47 ` [PATCH v7 4/4] vfio: convey kvm that the vfio-pci device is wc safe ankita
2024-02-12 13:16 ` David Hildenbrand
2024-02-12 17:05 ` Alex Williamson
2024-02-12 17:20 ` Jason Gunthorpe
2024-02-12 17:27 ` Alex Williamson
2024-02-13 1:59 ` Ankit Agrawal [this message]
2024-02-12 10:26 ` [PATCH v7 0/4] kvm: arm64: allow the VM to select DEVICE_* and NORMAL_NC for IO memory David Hildenbrand
2024-02-12 12:56 ` Jason Gunthorpe
2024-02-12 13:06 ` David Hildenbrand
2024-02-12 20:24 ` Oliver Upton
2024-02-13 2:29 ` Ankit Agrawal
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