On Sun, 11 Sep 2011 20:53:55 -0400, Thor Lancelot Simon wrote:
On Sun, Sep 11, 2011 at 11:42:33PM +0200, Jean-Yves Migeon wrote:
On 11.09.2011 21:07, Thor Lancelot Simon wrote:
Similarly, I am not sure I believe the security justification,
mostly
because I don't really see why I should
I can't see how a userland implementation can have better performances
than an all in-kernel implementation. There are more context switches,
which are notr so cheap with Xen.
From what I understand using blktap with Xen provides better
performance because it is designed specifically for this
On Sun, Sep 11, 2011 at 08:58:53PM +0200, Roger Pau Monné wrote:
I can't see how a userland implementation can have better performances
than an all in-kernel implementation. There are more context switches,
which are notr so cheap with Xen.
From what I understand using blktap with Xen
On Sun, Sep 11, 2011 at 08:58:53PM +0200, Roger Pau Monn? wrote:
I can't see how a userland implementation can have better performances
than an all in-kernel implementation. There are more context switches,
which are notr so cheap with Xen.
From what I understand using blktap with Xen
On 11.09.2011 21:07, Thor Lancelot Simon wrote:
Similarly, I am not sure I believe the security justification, mostly
because I don't really see why I should believe that the very complex
memory management code involved in providing the split kernel/user
memory-mapped device driver interface
On Sun, Sep 11, 2011 at 11:42:33PM +0200, Jean-Yves Migeon wrote:
On 11.09.2011 21:07, Thor Lancelot Simon wrote:
Similarly, I am not sure I believe the security justification, mostly
because I don't really see why I should believe that the very complex
memory management code involved in
Hello,
Thanks for the reply, sometimes I'm so focused in the problem that I
forget the big picture. PUD is a framework present in NetBSD that
allows to implement character and block devices in userspace. [1]
The blktap (“block tap”) userspace toolkit provides a user-level disk
I/O interface in
On Sat, Sep 10, 2011 at 12:05:53PM +0200, Roger Pau Monn? wrote:
Hello,
Thanks for the reply, sometimes I'm so focused in the problem that I
forget the big picture. PUD is a framework present in NetBSD that
allows to implement character and block devices in userspace. [1]
The blktap
I do not understahd why it is desirable to involve additional context
switches to and from userspace into this data path.
Instead of writing a bunch of fairly dubious page mapping code [...]
in the kernel to support user-space daemons handling various virtual
disk formats, why not put the
Can you please expand PUD and explain what blktap2 does and is used for?
can't tell the actors without a playbill,
Erik f...@netbsd.org
Hello,
I'm trying to port blktap2 Linux kernel driver to NetBSD using PUD
(thanks to libpud developed by Vyacheslav Matyushin during this year
SoC). blktap2 is composed of several devices, some of them are block
devices, other are character devices. Now I have to implement a
character device that
11 matches
Mail list logo