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Re: [RFC v2 PATCH 01/13] mm/shmem: Introduce F_SEAL_GUEST
From: |
Jason Gunthorpe |
Subject: |
Re: [RFC v2 PATCH 01/13] mm/shmem: Introduce F_SEAL_GUEST |
Date: |
Mon, 22 Nov 2021 09:31:45 -0400 |
On Mon, Nov 22, 2021 at 10:26:12AM +0100, David Hildenbrand wrote:
> I do wonder if we want to support sharing such memfds between processes
> in all cases ... we most certainly don't want to be able to share
> encrypted memory between VMs (I heard that the kernel has to forbid
> that). It would make sense in the use case you describe, though.
If there is a F_SEAL_XX that blocks every kind of new access, who
cares if userspace passes the FD around or not?
Jason
- [RFC v2 PATCH 00/13] KVM: mm: fd-based approach for supporting KVM guest private memory, Chao Peng, 2021/11/19
- [RFC v2 PATCH 01/13] mm/shmem: Introduce F_SEAL_GUEST, Chao Peng, 2021/11/19
- Re: [RFC v2 PATCH 01/13] mm/shmem: Introduce F_SEAL_GUEST, David Hildenbrand, 2021/11/19
- Re: [RFC v2 PATCH 01/13] mm/shmem: Introduce F_SEAL_GUEST, Jason Gunthorpe, 2021/11/19
- Re: [RFC v2 PATCH 01/13] mm/shmem: Introduce F_SEAL_GUEST, David Hildenbrand, 2021/11/19
- Re: [RFC v2 PATCH 01/13] mm/shmem: Introduce F_SEAL_GUEST, Jason Gunthorpe, 2021/11/19
- Re: [RFC v2 PATCH 01/13] mm/shmem: Introduce F_SEAL_GUEST, David Hildenbrand, 2021/11/22
- Re: [RFC v2 PATCH 01/13] mm/shmem: Introduce F_SEAL_GUEST,
Jason Gunthorpe <=
- Re: [RFC v2 PATCH 01/13] mm/shmem: Introduce F_SEAL_GUEST, David Hildenbrand, 2021/11/22
- Re: [RFC v2 PATCH 01/13] mm/shmem: Introduce F_SEAL_GUEST, Jason Gunthorpe, 2021/11/22
- Re: [RFC v2 PATCH 01/13] mm/shmem: Introduce F_SEAL_GUEST, David Hildenbrand, 2021/11/22
- Re: [RFC v2 PATCH 01/13] mm/shmem: Introduce F_SEAL_GUEST, Jason Gunthorpe, 2021/11/22
- Re: [RFC v2 PATCH 01/13] mm/shmem: Introduce F_SEAL_GUEST, David Hildenbrand, 2021/11/22
- Re: [RFC v2 PATCH 01/13] mm/shmem: Introduce F_SEAL_GUEST, Sean Christopherson, 2021/11/19
- Re: [RFC v2 PATCH 01/13] mm/shmem: Introduce F_SEAL_GUEST, Jason Gunthorpe, 2021/11/19
- Re: [RFC v2 PATCH 01/13] mm/shmem: Introduce F_SEAL_GUEST, Sean Christopherson, 2021/11/19
- Re: [RFC v2 PATCH 01/13] mm/shmem: Introduce F_SEAL_GUEST, Jason Gunthorpe, 2021/11/19
- Re: [RFC v2 PATCH 01/13] mm/shmem: Introduce F_SEAL_GUEST, Sean Christopherson, 2021/11/19