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Re: [Qemu-devel] [PATCH 19/21] userfaultfd: remap_pages: UFFDIO_REMAP pr
From: |
Linus Torvalds |
Subject: |
Re: [Qemu-devel] [PATCH 19/21] userfaultfd: remap_pages: UFFDIO_REMAP preparation |
Date: |
Thu, 5 Mar 2015 11:32:24 -0800 |
On Thu, Mar 5, 2015 at 10:51 AM, Andrea Arcangeli <address@hidden> wrote:
>
> Thanks for your idea that the UFFDIO_COPY is faster, the userland code
> we submitted for qemu only uses UFFDIO_COPY|ZEROPAGE, it never uses
> UFFDIO_REMAP.
Ok. So there's no actual expected use of the remap interface. Good.
That makes this series more palatable, since the rest didn't raise my
hackles much.
(But yeah, the documentation patch didn't really explain the uses very
much or at all, so I think something more is needed in that area).
Linus
- [Qemu-devel] [PATCH 15/21] userfaultfd: UFFDIO_COPY and UFFDIO_ZEROPAGE, (continued)
- [Qemu-devel] [PATCH 15/21] userfaultfd: UFFDIO_COPY and UFFDIO_ZEROPAGE, Andrea Arcangeli, 2015/03/05
- [Qemu-devel] [PATCH 20/21] userfaultfd: UFFDIO_REMAP, Andrea Arcangeli, 2015/03/05
- [Qemu-devel] [PATCH 07/21] userfaultfd: call handle_userfault() for userfaultfd_missing() faults, Andrea Arcangeli, 2015/03/05
- [Qemu-devel] [PATCH 10/21] userfaultfd: add new syscall to provide memory externalization, Andrea Arcangeli, 2015/03/05
- [Qemu-devel] [PATCH 21/21] userfaultfd: add userfaultfd_wp mm helpers, Andrea Arcangeli, 2015/03/05
- [Qemu-devel] [PATCH 19/21] userfaultfd: remap_pages: UFFDIO_REMAP preparation, Andrea Arcangeli, 2015/03/05
- Re: [Qemu-devel] [PATCH 19/21] userfaultfd: remap_pages: UFFDIO_REMAP preparation, Pavel Emelyanov, 2015/03/05
- [Qemu-devel] [PATCH 04/21] userfaultfd: linux/userfaultfd_k.h, Andrea Arcangeli, 2015/03/05
- [Qemu-devel] [PATCH 14/21] userfaultfd: mcopy_atomic|mfill_zeropage: UFFDIO_COPY|UFFDIO_ZEROPAGE preparation, Andrea Arcangeli, 2015/03/05
- [Qemu-devel] [PATCH 03/21] userfaultfd: uAPI, Andrea Arcangeli, 2015/03/05
- [Qemu-devel] [PATCH 05/21] userfaultfd: add vm_userfaultfd_ctx to the vm_area_struct, Andrea Arcangeli, 2015/03/05
- Re: [Qemu-devel] [PATCH 00/21] RFC: userfaultfd v3, Pavel Emelyanov, 2015/03/05
- [Qemu-devel] [PATCH 09/21] userfaultfd: prevent khugepaged to merge if userfaultfd is armed, Andrea Arcangeli, 2015/03/05
- [Qemu-devel] [PATCH 18/21] userfaultfd: UFFDIO_REMAP uABI, Andrea Arcangeli, 2015/03/05