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Der gestrige Vortrag wurde übrigens aufgezeichnet und sollte innerhalb weniger Wochen über die Webseite des @clt_news abrufbar sein – zumindest, wenn die mich nicht bestrafen, weil ich schamlos die schon großzügig bemesse Zeit überzogen habe… (aber nur in eine Pause)

 
#Linux #kernel 5.1-rc1 is out: lore.kernel.org/lkml/CAHk-=wj1…
"[…] everything is normal […] A somewhat recent development is how the tools/testing/ updates have been quite noticeable lately […] he documentation subdirectory is also quite noticeable. […] really stuff all over […]"


 

 

 

 
Sonntag um 12 Uhr noch nichts vor? Dann schaut doch den Live-Stream (chemnitzer.linux-tage.de/2019/de/progra…) des #Linux-#Kernel-Podiums (chemnitzer.linux-tage.de/2019/de/progra…) vom #CLT2019. Wenn Ihr Fragen für die Runde habt, lasst sie mir zukommen, dann versuche ich sie einzubringen.


 
Sonntag um 13 Uhr noch nichts vor? Dann schaut doch den Live-Stream (chemnitzer.linux-tage.de/2019/de/progra…) meines Vortrags zu aktuellen Entwicklungen beim #Linux #Kernel (chemnitzer.linux-tage.de/2019/de/progra…) vom #CLT2019. Ihr könnt vorab oder live sogar Fragen stellen (etherpad.net/p/klclt19)


 

 
The recoding of my "What's up in #Linux #Kernel land" talk I gave at this years @devconf_cz is online now. Enjoy!

 
#Nvidia and #Mellanox were regularly among the top 25 companies contributing to the #Linux #Kernel recently. Together (nvidianews.nvidia.com/news/nvidia-to…) they afaics might hit the top 10.

Picture: lwn.net/Articles/78027… (5.0 had 150 commits with --author=nvidia.com)


 

 
EDID support for #qemu: kraxel.org/blog/2019/03/e… Gerd Hoffmann writes: "[…]This allows to pass all kinds of information about the (virtual) display to the guest. Preferred video mode, display resolution, monitor name, monitor serial number and […] New in #linux #kernel 5.0 […]"


 
Linux 5.0 - was ist neu?

\#linux #linuxnews #opensource #kernel #mywork

 

 
Here is your answer in case you wonder why after tagging in git it often takes a few hours until a new #Linux #mainline release tarball actually shows up on #kernel.org.

One of many good reasons why you want to use #git instead of tarballs and patches to get Linux kernels ;-)

 
The #Linux #Kernel 5.0 is out:
lore.kernel.org/lkml/CAHk-=wju… "[…] I'd like to point out (yet again) that […] "5.0" doesn't mean anything more than that the 4.x numbers started getting big enough that I ran out of fingers and toes. […]"

Here is whats new: kernelnewbies.org/Linux_5.0


 
Linux 5.0 ist da: Geschwindigkeit zurückerobern und moderner speichern #Adiantum #BFQ #BLK-MQ #FreeSync #Kernel #Kernel-Log #Linux50 #LinuxundOpenSource

 
Energy Aware Scheduling (EAS) in #Linux #kernel 5.0 community.arm.com/processors/b/b… "[…] It enables energy-efficient scheduling decisions on big.LITTLE and DynamIQ Arm platforms by choosing the right type of CPU for each task […] From 5.1 onwards, mainline Linux will fully support[…]"


 
Linus released #Linux #kernel 5.0-rc8, final expected in one week from now lore.kernel.org/lkml/CAHk-=wgt… "[…] This may be totally unnecessary […] rc7, which just didn't make me feel the warm and fuzzies […]
But on the whole I just felt happier with an extra rc […]"


 
The #Linux #Kernel 4.20.12, 4.19.25, 4.14.103, 4.9.160, 4.4.176 and 3.18.136 are out.

The usual drill applies: They all contain important fixes and users "must update". One reasons for that: Some of them contain a fix for the "Use After Free Vuln" that made the news this week.


 
Ganz zu erwähnen vergessen: Im aktuellen @ctmagazin finden sich drei Seriten #meingeschreibsel zu einigen EXPORT_SYMBOL_GPL()-Umstellungen im #Linux #Kernel 5.0, die ZFS on Linux (ZOL) kaputt gemacht haben und Nvidia Knüppel zwischen die Beine werfen.

 
Ganz zu erwähnen vergessen: Im aktuellen @ctmagazin finden sich drei Seriten #meingeschreibsel zu einigen EXPORT_SYMBOL_GPL()-Umstellungen im #Linux #Kernel 5.0, die ZFS on Linux (ZOL) kaputt gemacht haben und Nvidia Knüppel zwischen die Beine werfen.

 
Ganz zu erwähnen vergessen: Im aktuellen @ctmagazin finden sich drei Seriten #meingeschreibsel zu einigen EXPORT_SYMBOL_GPL()-Umstellungen im #Linux #Kernel 5.0, die ZFS on Linux (ZOL) kaputt gemacht haben und Nvidia Knüppel zwischen die Beine werfen.

 
Ganz zu erwähnen vergessen: Im aktuellen @ctmagazin finden sich drei Seriten #meingeschreibsel zu einigen EXPORT_SYMBOL_GPL()-Umstellungen im #Linux #Kernel 5.0, die ZFS on Linux (ZOL) kaputt gemacht haben und Nvidia Knüppel zwischen die Beine werfen.

 
10 Jahre alte kritische Lücke in Linux-Kernel-Kryptofunktion entdeckt #Kernel #Linux #LinuxundOpenSource #Linux-Kernel #Sicherheit #Sicherheitslücken

 

Kernellog



 

 
#Linux #kernel 5.0-rc7 is out lore.kernel.org/lkml/CAHk-=wgv… "[…] A nice and calm week, with statistics looking normal. […] Nothing particularly odd stands out, and everything is pretty small. Just the way I like it. Shortlog appended, Linus […]"


 
io_uring, the next gen #AIO interface from @axboe, hit linux-next and thus in on track to get merged into #Linux #kernel 5.1. \o/
For more details about it see see lore.kernel.org/linux-block/20… and the @lwnnet article "Ringing in a new asynchronous I/O API" lwn.net/Articles/77670…


 
#Linux #kernel 5.0-rc6 is out lore.kernel.org/lkml/CAHk-=whu…
"[…] Things are fairly normal, although rc6 is a bit bigger than I would have liked to see. […] nothing in there looks all that odd or scary. I think we're still solidly on track for a normal release. Linus"

Image/Photo

 
Fun fact (no judgement, JFYI TCIMC): #OpenSuse #Tumbleweed, a rolling release distro, got the #Linux #kernel 4.20 about ten days ago. #Fedora 29, a more traditionally updated distro, got this kernel version a week later as regular update.

 
That's unusual: The #Linux stable and longterm #kernel 4.20.2, 4.19.5 and 4.14.93 (released an hour ago) mark devm_memremap_pages() as well as hmm_devmem_{add, add_resource}() as EXPORT_SYMBOL_GPL. Thus proprietary drivers won't be able to use those functions anymore.

To clarify the "[…] won't be able to use […]" bit here's a quote from https://www.kernel.org/doc/html/latest/kernel-hacking/hacking.html?highlight=export_symbol_gpl#export-symbol-gpl: "[…] symbols exported by EXPORT_SYMBOL_GPL() can only be seen by modules with a MODULE_LICENSE() that specifies a GPL compatible license. […]".

For completeness: Last #LKML discussion about these patches before they got merged to mainline before #Linux version 5.0-rc1 recently: https://lore.kernel.org/lkml/154275557457.76910.16923571232582744134.stgit@dwillia2-desk3.amr.corp.intel.com/t/#mf921de6121863f733a6b12e348f4013a56e53233 Commits for 4.19.y:
* https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-4.19.y&id=0f1a62e0737a9a1c09d4cc86162724656db9eb70
* https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-4.19.y&id=b30ea244cf3e1f086da008fe6fa0278154f49244





 
Virtio_Blk finally supports discard and write zeroes in the #Linux mainline #kernel (thus it will be in 4.21, which might be called 5.0 instead). That will make it easier to shrink VM images by getting rid of data that got deleted (like TRIM does for SSDs)
git.kernel.org/torvalds/c/1f2…


 
Slides and code from below talk about the tracing abilities and some of the risks of #eBPF in the modern #Linux #kernel are now up as well
Code: github.com/nccgroup/ebpf
Slides: frab.cccv.de/system/event_a…

 
The legacy block layer stack including I/O-schedulers like #CFQ were removed from the #Linux mainline #kernel last night; the same merge contains quite a few improvements and speedups for the modern block stack that can utilize multiple queues (#blk-mq)
git.kernel.org/torvalds/c/0e9…


 
TWIMC: You can get RPMs with vanilla #Linux 4.19, 4.20 and mainline snapshots in my #Kernel vanilla repos for #Fedora: fedoraproject.org/wiki/Kernel_Va…

BTW: Does anyone know if there is a proper PPA (e.g. enable once and leave the rest to apt) that provides something similar for #Ubuntu?

To clarify the "proper PPA": I know about https://kernel.ubuntu.com/~kernel-ppa/mainline/ as well as tools like Ukuu or ubuntu-mainline-kernel.sh, but even with those its harder to use than a proper PPA where a regular "apt update" will to the "right thing"™ automatically.



 
Linux 4.20 unterm Weihnachtsbaum

\#linux #linuxnews #opensource #Kernel #Linux-420

 
The #Linux #Kernel 4.20 is out: lore.kernel.org/lkml/CAHk-=wg0… Only available via git right now, as the tarball is not yet available on kernel.org; its frontpage also does not mentioned the release yet.


 
Linus latest statement on #regressions in the #linux #kernel: '[…] "we don't break user space" is the #1 rule […] If somebody ignores that rule, it needs to be escalated to me. Immediately. Because I need to know. […]'
lore.kernel.org/lkml/CAHk-=wg-…
Context:





 
Regarding the part "[…] KERNEL API BREAKAGE: #Linux #kernel 4.18 changed behaviour regarding mknod() handling[…]" from the #systemd 240 announcement see my alter ego at twitter.com/kernellogger/s… as Linus reverted the change that caused this regression.

 
For those that have seen "[…] KERNEL API BREAKAGE: #Linux #kernel 4.18 changed behaviour regarding mknod() handling[…]" in the #systemd 240 announcement (lists.freedesktop.org/archives/syste…): The cause for this regression was reverted from #Linux mainline last night git.kernel.org/torvalds/c/94f…


 
TWIMC. But remember, normally there is no need for a service like this, as you simply should use the latest version from a supported #stable or #longterm version line all the time. Why you ask? Well, not every bug or security issue the #Linux #kernel developers fix gets a CVE.

 
BTW, my talk "What's up in #Linux #Kernel land" is scheduled for Sunday afternoon. devconfcz2019.sched.com/event/JchG/wha…

 
#Linux #Kernel 4.19.9, 4.14.88, 4.9.145, 4.4.167, 3.18.129 are out, bringing the usual pile of fixes and small improvements along with the "you just update" advice. Among the changes in 4.19.9 are a few #Amdgpu patches that improve support for the #Radeon RX 590.


 
BTW, #Linux 4.14.87 and 4.9.144 are out, too. All those new #Longterm #kernel bring the usual pile of fixes and small improvements, so you must update.

Site node: If you do not know which kernel version line is the best for your machines go and read kroah.com/log/blog/2018/…

 
#Linux #kernel 4.19.8 is out. It fixes the data corruption issue in blk-mq that made the news recently and was alleged to ext4 in the beginning.

Note: The fix applied on Wednesday was basically reverted today and replaced by a better one. For details see git.kernel.org/pub/scm/linux/…


 
Block/XFS: Support alternative mirror device retry "[…]If #XFS successfully reads a metadata buffer off a raid1 but decides that [it]is garbage, today it will shut down the entire fs without trying any of the other mirrors. This patch[…]" #linux #kernel
lore.kernel.org/linux-block/15…