Linux 5.10-rc1

From: Linus Torvalds
Date: Sun Oct 25 2020 - 18:40:49 EST

Two weeks have passed, and the merge window is over. I've tagged and
pushed out 5.10-rc1, and everything looks fairly normal.

This looks to be a bigger release than I expected, and while the merge
window is smaller than the one for 5.8 was, it's not a *lot* smaller.
And 5.8 was our biggest release ever.

I'm not entirely sure whether this is just a general upward trend (we
did seem to plateau for a while there), or just a fluke, or perhaps
due to 5.9 dragging out an extra week. We will see, I guess.

That said, things seem to have gone fairly smoothly. I don't see any
huge red flags, and the merge window didn't cause any unusual issues
for me. Famous last words..

The most interesting - to me - change here is Christoph's setf_fs()
removal (it got merged through Al Viro, as you can see in my mergelog
below). It's not a _huge_ change, but it's interesting because the
whole model of set_fs() to specify whether a userspace copy actually
goes to user space or kernel space goes back to pretty much the
original release of Linux, and while the name is entirely historic (it
hasn't used the %fs segment register in a long time), the concept has
remained. Until now.

We still do have "set_fs()" around, and not every architecture has
been converted to the new world order, but x86, powerpc, s390 and
RISC-V have had the address space overrides removed, and all the core
work is done. Other architectures will hopefully get converted away
from that very historic model too, but it might take a while to get
rid of it all.

Anyway, to most people that all shouldn't matter at all, and it's
mainly a small historical footnote that 5.10 no longer relies on the
whole set_fs() model. Most of the actual changes are - as usual -
driver updates, but there are changes all over. I think the merge log
below gives some kind of flavor of what's been going on on a high
level, but if you're interested in the details go look at the git
tree. As mentioned, it's a big merge window, with almost 14k commits
(*) by closer to 1700 people.

Please go test,


(*) closer to 15k commits if you count merges.


Al Viro (6):
copy_and_csum cleanups
compat iovec cleanups
compat quotactl cleanups
compat mount cleanups
initial set_fs() removal
misc vfs updates

Alex Williamson (1):
VFIO updates

Alexandre Belloni (1):
RTC updates

Andreas Gruenbacher (1):
gfs2 updates

Andrew Morton (3):
misc updates
more updates
yet more updates

Anna Schumaker (1):
NFS client updates

Arnaldo Carvalho de Melo (1):
perf tools updates

Benson Leung (1):
chrome platform updates

Bjorn Andersson (2):
remoteproc updates
rpmsg updates

Bjorn Helgaas (1):
PCI updates

Boris Brezillon (1):
i3c updates

Borislav Petkov (14):
EDAC updates
RAS updates
x86 cpu updates
x86 platform updates
x86 PASID updates
x86 fsgsbase updates
x86 fpu updates
x86 cleanups
x86 cache resource control updates
x86 fix
x86 fixes
x86 asm updates
x86 SEV-ES support
x86 SEV-ES fixes

Bruce Fields (1):
nfsd updates

Casey Schaufler (1):
smack updates

Christian Brauner (2):
kernel_clone() updates
pidfd updates

Christoph Hellwig (3):
dma-mapping updates
configfs updates
dma-mapping fixes

Corey Minyard (1):
IPMI updates

Damien Le Moal (1):
zonefs updates

Daniel Lezcano (1):
thermal updates

Daniel Thompson (1):
kgdb updates

Darrick Wong (5):
iomap updates
xfs updates
more xfs updates
clone/dedupe/remap code refactoring
xfs fixes

Dave Airlie (3):
drm updates
drm fixes
more drm fixes

David Howells (1):
afs updates

David Sterba (1):
btrfs updates

David Teigland (1):
dlm updates

Dmitry Torokhov (1):
input updates

Dominique Martinet (1):
9p updates

Eric Biggers (1):
fscrypt updates

Gao Xiang (1):
erofs updates

Geert Uytterhoeven (1):
m68k updates

Greg KH (6):
tty/serial updates
driver core updates
SPDX updates
staging / IIO driver updates
USB/PHY/Thunderbolt driver updates
char/misc driver updates

Greg Ungerer (1):
m68knommu updates

Guenter Roeck (1):
hwmon updates

Hans de Goede (1):
x86 platform driver updates

Helge Deller (2):
parisc updates
more parisc updates

Herbert Xu (1):
crypto updates

Ilya Dryomov (1):
ceph updates

Ingo Molnar (14):
scheduler updates
locking updates
EFI changes
orphan section checking
static call support
performance events updates
perf/kprobes updates
x86 kaslr updates
x86 mm updates
x86 build update
x86 paravirt cleanup
x86 Hyper-V update
objtool updates
RCU changes

Jaegeuk Kim (1):
f2fs updates

Jakub Kicinski (2):
networking updates
networking fixes

James Bottomley (2):
SCSI updates
more SCSI updates

Jan Kara (2):
UDF, reiserfs, ext2, quota fixes
direct-io fix

Jarkko Sakkinen (1):
tpm updates

Jason Gunthorpe (1):
rdma updates

Jassi Brar (1):
mailbox updates

Jean Delvare (1):
dmi update

Jeff Layton (1):
file locking fix

Jens Axboe (9):
block updates
io_uring updates
libata updates
block driver updates
io_uring updates
arch task_work cleanups
libata fixes
io_uring fixes
block fixes

Jessica Yu (1):
modules updates

Jiri Kosina (3):
livepatching update
HID updates
trivial updates

Joerg Roedel (2):
iommu updates
iommu fix

Jon Mason (1):
NTB fixes

Jonathan Corbet (2):
documentation updates
documentation fixes

Juergen Gross (3):
xen updates
more xen updates
more xen updates

Julia Lawall (1):
coccinelle updates

Kees Cook (2):
seccomp updates
overflow update

Konrad Rzeszutek Wilk (1):
swiotlb updates

Lee Jones (2):
MFD updates
backlight updates

Linus Walleij (2):
GPIO updates
pin control updates

Mark Brown (3):
regmap updates
regulator updates
spi updates

Masahiro Yamada (2):
Kbuild updates
Kconfig updates

Matthew Wilcox (1):
XArray updates

Mauro Carvalho Chehab (2):
media updates
documentation updates

Micah Morton (1):
SafeSetID updates

Michael Ellerman (2):
powerpc updates
powerpc fixes

Michael Tsirkin (1):
virtio updates

Michal Simek (1):
Microblaze build warning fix

Mike Snitzer (1):
device mapper updates

Miklos Szeredi (2):
overlayfs updates
fuse updates

Mimi Zohar (1):
integrity updates

Namjae Jeon (1):
exfat updates

Olof Johansson (5):
ARM SoC fixes
ARM SoC platform updates
ARM SoC-related driver updates
ARM Devicetree updates
ARM SoC defconfig updates

Palmer Dabbelt (2):
RISC-V updates
more RISC-V updates

Paolo Bonzini (2):
KVM updates
KVM fixes

Paul Moore (2):
audit updates
selinux updates

Pavel Machek (1):
LED updates

Petr Mladek (2):
printk updates
printk fix

Rafael Wysocki (5):
power management updates
ACPI updates
PNP updates
more power management updates
more ACPI updates

Richard Weinberger (4):
MTD updates
ubifs updates
more ubi and ubifs updates
UML updates

Rob Herring (1):
devicetree updates

Russell King (1):
ARM updates

Sebastian Reichel (1):
power supply and reset updates

Shuah Khan (4):
kselftest updates
kselftest updates
Kunit updates
more Kunit updates

Stephen Boyd (1):
clk updates

Steve French (2):
cifs updates
more cifs updates

Steven Rostedt (3):
tracing updates
tracing fix
tracing ring-buffer fix

Takashi Iwai (2):
sound updates
sound fixes

Ted Ts'o (1):
ext4 updates

Tejun Heo (1):
cgroup updates

Tetsuo HandaL
tomoyo fix

Thierry Reding (1):
pwm updates

Thomas Bogendoerfer (1):
MIPS updates

Thomas Gleixner (9):
debugobjects updates
timekeeping updates
irq updates
x86 irq updates
x86 entry code updates
locking fix
perf fix
scheduler fixes
timer fixes

Tony Luck (1):
ia64 updates

Ulf Hansson (1):
MMC updates

Vasily Gorbik (1):
s390 updates

Vineet Gupta (2):
ARC updates
ARC fix

Vinod Koul (1):
dmaengine updates

Wei Liu (2):
Hyper-V updates
another Hyper-V update

Will Deacon (2):
arm64 updates
more arm64 updates

Willy Tarreau (1):
random32 updates

Wim Van Sebroeck (1):
watchdog updates

Wolfram Sang (2):
i2c updates
i2c fix