All of lore.kernel.org
 help / color / mirror / Atom feed
From: Laurent Vivier <lvivier@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: Alexander Potapenko <glider@google.com>,
	linux-crypto@vger.kernel.org, Dmitriy Vyukov <dvyukov@google.com>,
	rusty@rustcorp.com.au, amit@kernel.org, akong@redhat.com,
	Herbert Xu <herbert@gondor.apana.org.au>,
	"Michael S . Tsirkin" <mst@redhat.com>,
	Matt Mackall <mpm@selenic.com>,
	virtualization@lists.linux-foundation.org,
	Laurent Vivier <lvivier@redhat.com>
Subject: [PATCH 0/4] hwrng: virtio - add an internal buffer
Date: Wed, 22 Sep 2021 19:08:59 +0200	[thread overview]
Message-ID: <20210922170903.577801-1-lvivier@redhat.com> (raw)

hwrng core uses two buffers that can be mixed in the virtio-rng queue.

This series fixes the problem by adding an internal buffer in virtio-rng.

Once the internal buffer is added, we can fix two other problems:

- to be able to release the driver without waiting the device releases the
  buffer

- actually returns some data when wait=0 as we can have some already
  available data

It also tries to improve the performance by always having a buffer in
the queue of the device.

Laurent Vivier (4):
  hwrng: virtio - add an internal buffer
  hwrng: virtio - don't wait on cleanup
  hwrng: virtio - don't waste entropy
  hwrng: virtio - always add a pending request

 drivers/char/hw_random/virtio-rng.c | 84 +++++++++++++++++++++--------
 1 file changed, 63 insertions(+), 21 deletions(-)

-- 
2.31.1



WARNING: multiple messages have this Message-ID (diff)
From: Laurent Vivier <lvivier@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: Laurent Vivier <lvivier@redhat.com>,
	Herbert Xu <herbert@gondor.apana.org.au>,
	amit@kernel.org, "Michael S . Tsirkin" <mst@redhat.com>,
	rusty@rustcorp.com.au, virtualization@lists.linux-foundation.org,
	Alexander Potapenko <glider@google.com>,
	linux-crypto@vger.kernel.org, Matt Mackall <mpm@selenic.com>,
	akong@redhat.com, Dmitriy Vyukov <dvyukov@google.com>
Subject: [PATCH 0/4] hwrng: virtio - add an internal buffer
Date: Wed, 22 Sep 2021 19:08:59 +0200	[thread overview]
Message-ID: <20210922170903.577801-1-lvivier@redhat.com> (raw)

hwrng core uses two buffers that can be mixed in the virtio-rng queue.

This series fixes the problem by adding an internal buffer in virtio-rng.

Once the internal buffer is added, we can fix two other problems:

- to be able to release the driver without waiting the device releases the
  buffer

- actually returns some data when wait=0 as we can have some already
  available data

It also tries to improve the performance by always having a buffer in
the queue of the device.

Laurent Vivier (4):
  hwrng: virtio - add an internal buffer
  hwrng: virtio - don't wait on cleanup
  hwrng: virtio - don't waste entropy
  hwrng: virtio - always add a pending request

 drivers/char/hw_random/virtio-rng.c | 84 +++++++++++++++++++++--------
 1 file changed, 63 insertions(+), 21 deletions(-)

-- 
2.31.1


_______________________________________________
Virtualization mailing list
Virtualization@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/virtualization

             reply	other threads:[~2021-09-22 17:09 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-22 17:08 Laurent Vivier [this message]
2021-09-22 17:08 ` [PATCH 0/4] hwrng: virtio - add an internal buffer Laurent Vivier
2021-09-22 17:09 ` [PATCH 1/4] " Laurent Vivier
2021-09-22 17:09   ` Laurent Vivier
2021-09-22 19:02   ` Michael S. Tsirkin
2021-09-22 19:02     ` Michael S. Tsirkin
2021-09-23  6:26     ` Laurent Vivier
2021-09-23  6:26       ` Laurent Vivier
2021-09-23  7:04       ` Michael S. Tsirkin
2021-09-23  7:04         ` Michael S. Tsirkin
2021-09-23  7:34         ` Laurent Vivier
2021-09-23  7:34           ` Laurent Vivier
2021-10-05 11:55           ` Michael S. Tsirkin
2021-10-05 11:55             ` Michael S. Tsirkin
2021-10-05 13:30             ` Laurent Vivier
2021-10-05 13:30               ` Laurent Vivier
2021-09-22 17:09 ` [PATCH 2/4] hwrng: virtio - don't wait on cleanup Laurent Vivier
2021-09-22 17:09   ` Laurent Vivier
2021-09-22 17:09 ` [PATCH 3/4] hwrng: virtio - don't waste entropy Laurent Vivier
2021-09-22 17:09   ` Laurent Vivier
2021-09-22 17:09 ` [PATCH 4/4] hwrng: virtio - always add a pending request Laurent Vivier
2021-09-22 17:09   ` Laurent Vivier
2021-09-22 17:50 ` [PATCH 0/4] hwrng: virtio - add an internal buffer Alexander Potapenko
2021-09-22 17:50   ` Alexander Potapenko via Virtualization
2021-10-05 11:40 ` Laurent Vivier
2021-10-05 11:40   ` Laurent Vivier

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210922170903.577801-1-lvivier@redhat.com \
    --to=lvivier@redhat.com \
    --cc=akong@redhat.com \
    --cc=amit@kernel.org \
    --cc=dvyukov@google.com \
    --cc=glider@google.com \
    --cc=herbert@gondor.apana.org.au \
    --cc=linux-crypto@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mpm@selenic.com \
    --cc=mst@redhat.com \
    --cc=rusty@rustcorp.com.au \
    --cc=virtualization@lists.linux-foundation.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.