Re: [PATCH v14 2/7] mm: add VM_DROPPABLE for designating always lazily freeable mappings

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Subject: Re: [PATCH v14 2/7] mm: add VM_DROPPABLE for designating always lazily freeable mappings
From: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Date: Wed, 11 Jan 2023 06:07:50 -0600
Cc: Florian Weimer <fweimer@xxxxxxxxxx>, "Jason A. Donenfeld" <Jason@xxxxxxxxx>, Andy Lutomirski <luto@xxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, patches@xxxxxxxxxxxxxxx, tglx@xxxxxxxxxxxxx, linux-crypto@xxxxxxxxxxxxxxx, linux-api@xxxxxxxxxxxxxxx, x86@xxxxxxxxxx, Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>, Adhemerval Zanella Netto <adhemerval.zanella@xxxxxxxxxx>, "Carlos O'Donell" <carlos@xxxxxxxxxx>, Arnd Bergmann <arnd@xxxxxxxx>, Jann Horn <jannh@xxxxxxxxxx>, Christian Brauner <brauner@xxxxxxxxxx>, linux-mm@xxxxxxxxx, mlichvar@xxxxxxxxxx
In-reply-to: <Y75k2KaDz2WdcXLk@sol.localdomain>
References: <20230101162910.710293-1-Jason@zx2c4.com> <20230101162910.710293-3-Jason@zx2c4.com> <Y7QIg/hAIk7eZE42@gmail.com> <CALCETrWdw5kxrtr4M7AkKYDOJEE1cU1wENWgmgOxn0rEJz4y3w@mail.gmail.com> <CAHk-=wg_6Uhkjy12Vq_hN6rQqGRP2nE15rkgiAo6Qay5aOeigg@mail.gmail.com> <Y7SDgtXayQCy6xT6@zx2c4.com> <CAHk-=whQdWFw+0eGttxsWBHZg1+uh=0MhxXYtvJGX4t9P1MgNw@mail.gmail.com> <874jt0kndq.fsf@oldenburg.str.redhat.com> <CAHk-=wg7vMC2VmSBdVw7EKV+7UDiftQEg3L+3Rc0rcjjfsvs5A@mail.gmail.com> <Y75k2KaDz2WdcXLk@sol.localdomain>

On Wed, Jan 11, 2023 at 1:27 AM Eric Biggers <ebiggers@xxxxxxxxxx> wrote:
>
> How would userspace decide when to reseed its CRNGs, then?

.. and that is relevant to all the VM discussions exactly why?

                Linus

References:
- [PATCH v14 0/7] implement getrandom() in vDSO
  - From: Jason A. Donenfeld
- [PATCH v14 2/7] mm: add VM_DROPPABLE for designating always lazily freeable mappings
  - From: Jason A. Donenfeld
- Re: [PATCH v14 2/7] mm: add VM_DROPPABLE for designating always lazily freeable mappings
  - From: Ingo Molnar
- Re: [PATCH v14 2/7] mm: add VM_DROPPABLE for designating always lazily freeable mappings
  - From: Andy Lutomirski
- Re: [PATCH v14 2/7] mm: add VM_DROPPABLE for designating always lazily freeable mappings
  - From: Linus Torvalds
- Re: [PATCH v14 2/7] mm: add VM_DROPPABLE for designating always lazily freeable mappings
  - From: Jason A. Donenfeld
- Re: [PATCH v14 2/7] mm: add VM_DROPPABLE for designating always lazily freeable mappings
  - From: Linus Torvalds
- Re: [PATCH v14 2/7] mm: add VM_DROPPABLE for designating always lazily freeable mappings
  - From: Florian Weimer
- Re: [PATCH v14 2/7] mm: add VM_DROPPABLE for designating always lazily freeable mappings
  - From: Linus Torvalds
- Re: [PATCH v14 2/7] mm: add VM_DROPPABLE for designating always lazily freeable mappings
  - From: Eric Biggers

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