<h3>Ben Hutchings</h3>
</div>
+<div class="slide">
+ <h1>Ben Hutchings</h1>
+ <ul>
+ <li>
+ Professional software engineer by day, Debian developer by night
+ </li>
+ <li>
+ Regular Linux contributor in both roles since 2008
+ </li>
+ <li>
+ Maintaining a net driver in my day job, plus core networking
+ and PCI code as necessary
+ </li>
+ <li>
+ Debian kernel team member, now doing most of the unstable
+ maintenance aside from ports
+ </li>
+ <li>
+ Maintaining Linux 3.2.<var>y</var> stable update series on
+ kernel.org
+ </li>
+ </ul>
+</div>
+
+<div class="slide">
+ <h1>Linux releases early and often</h1>
+ <ul class="incremental">
+ <li>
+ Linux is released about 5 times a year (plus stable updates
+ every week or two)
+ </li>
+ <li>
+ For 'wheezy' we chose to freeze with Linux 3.2, which was
+ getting pretty old by the time of release
+ </li>
+ <li>
+ Good news: we have lots of new kernel features in testing/unstable
+ </li>
+ <li>
+ Bad news: some of them won't really work without new userland
+ </li>
+ </ul>
+</div>
+
+<div class="slide">
+ <h1>Team device driver [3.3]</h1>
+ <ul class="incremental">
+ <li>
+ Alternative to the bonding driver - simpler, modular, high-level
+ control deferred to userland
+ </li>
+ <li>
+ Basic configuration can be done with <tt>ip</tt>, but it really
+ needs new tools - <tt>teamd</tt>, <tt>teamnl</tt>, etc.
+ </li>
+ <li>
+ Make it work: see
+ <a href="http://bugs.debian.org/695850">http://bugs.debian.org/695850</a>
+ </li>
+ </ul>
+</div>
+
+<div class="slide">
+ <h1>Transcendent memory [3.0-3.5]</h1>
+ <ul class="incremental">
+ <li>
+ Abstract storage for memory pages, expected to be slower than
+ regular memory but faster than disk
+ </li>
+ <li>
+ Can provide a second layer of page cache (cleancache and frontswap)
+ </li>
+ <li>
+ Pages stored by hypervisor (Xen), compressed local memory
+ (zcache) or cluster of machines (RAMster)
+ </li>
+ <li>
+ Not yet enabled in Debian kernels, and needs some thought about
+ configuration
+ </li>
+ <li>
+ Make it work: see
+ <a href="https://lwn.net/Articles/454795/">https://lwn.net/Articles/454795/</a>
+ and send proposal to debian-kernel
+ </li>
+ </ul>
+</div>
+
+<div class="slide">
+ <h1>New KMS drivers [3.3-3.10]</h1>
+ <ul class="incremental">
+ <li>
+ DRM/KMS drivers added for old, new and virtual hardware -
+ AST, DisplayLink, Hyper-V, Matrox G200, QEMU Cirrus
+ </li>
+ <li>
+ Should be more robust than purely user-mode drivers, and
+ compatible with Secure Boot
+ </li>
+ <li>
+ Current X drivers don't work with these, so the kernel drivers
+ are disabled for now
+ </li>
+ <li>
+ Make it work: join the X Strike Force and package the new X
+ drivers
+ </li>
+ </ul>
+</div>
+
+<div class="slide">
+ <h1>Module signing [3.7]</h1>
+ <ul class="incremental">
+ <li>
+ Kernel modules can be signed at build time, and the kernel
+ configured to refuse loading unsigned modules
+ </li>
+ <li>
+ Necessary but not sufficient to implement Secure Boot -
+ we would also need signed kernel images and some other
+ restrictions when booted in this mode
+ </li>
+ <li>
+ Make Secure Boot work: come to the meeting on Tuesday
+ </li>
+ </ul>
+</div>
+
+<div class="slide">
+ <h1>More support for discard</h1>
+ <ul class="incremental">
+ <li>
+ Flash devices (and thin-provisioned SANs) can be more efficient
+ if the filesystem 'discards' unused disk space
+ </li>
+ <li>
+ Requires support in hardware, driver, filesystem and any layered
+ device drivers - e.g. LVM, RAID (added in 3.7)
+ </li>
+ <li>
+ Must be explicitly enabled, but d-i doesn't do this by default
+ </li>
+ <li>
+ Make it work: fix <a href="http://bugs.debian.org/690977">http://bugs.debian.org/690977</a>
+ </li>
+ </ul>
+</div>
+
+<div class="slide">
+ <h1>User namespaces [3.7]</h1>
+ <ul class="incremental">
+ <li>
+ One of the last missing pieces for OpenVZ-like containers
+ </li>
+ <li>
+ Each user namespace has its own <tt>root</tt> user with
+ privileges over the users and processes in that namespace - but
+ not the whole system
+ </li>
+ <li>
+ Currently somewhat experimental, and requires filesystem
+ changes which haven't been done for XFS
+ </li>
+ <li>
+ Make it work: send patches to upstream XFS developers (this
+ one's hard)
+ </li>
+ </ul>
+</div>
+
<div class="slide">
<h1>Questions?</h1>
</div>
projects / kernel-news-talk.git / blobdiff