History log of /linux-master/arch/s390/configs/defconfig
Revision Date Author Comments
# a25d5887 07-Apr-2022 Heiko Carstens <hca@linux.ibm.com>

s390: update defconfigs

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

# c9bb1936 17-Dec-2021 Heiko Carstens <hca@linux.ibm.com>

s390: update defconfigs

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

# 0a4ee518 21-Jan-2022 Christoph Hellwig <hch@lst.de>

mm: remove cleancache

Patch series "remove Xen tmem leftovers".

Since the removal of the Xen tmem driver in 2019, the cleancache hooks
are entirely unused, as are large parts of frontswap. This series
against linux-next (with the folio changes included) removes
cleancaches, and cuts down frontswap to the bits actually used by zswap.

This patch (of 13):

The cleancache subsystem is unused since the removal of Xen tmem driver
in commit 814bbf49dcd0 ("xen: remove tmem driver").

[akpm@linux-foundation.org: remove now-unreachable code]

Link: https://lkml.kernel.org/r/20211224062246.1258487-1-hch@lst.de
Link: https://lkml.kernel.org/r/20211224062246.1258487-2-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Juergen Gross <jgross@suse.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Konrad Rzeszutek Wilk <Konrad.wilk@oracle.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Seth Jennings <sjenning@redhat.com>
Cc: Dan Streetman <ddstreet@ieee.org>
Cc: Vitaly Wool <vitaly.wool@konsulko.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

# b087dfab 04-Nov-2021 Patrick Steuer <patrick.steuer@de.ibm.com>

s390/crypto: add SIMD implementation for ChaCha20

Add an implementation of the ChaCha20 stream cipher (see e.g. RFC 7539)
that makes use of z13's vector instruction set extension.

The original implementation is by Andy Polyakov which is
adapted for kernel use.

Four to six blocks are processed in parallel resulting in a performance
gain for inputs >= 256 bytes.


1 operation in 622 cycles (256 bytes)
1 operation in 2346 cycles (1024 bytes)


1 operation in 218 cycles (256 bytes)
1 operation in 647 cycles (1024 bytes)

Cc: Andy Polyakov <appro@openssl.org>
Reviewed-by: Harald Freudenberger <freude@de.ibm.com>
Signed-off-by: Patrick Steuer <patrick.steuer@de.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

# 5dcf0c30 09-Dec-2021 Niklas Schnelle <schnelle@linux.ibm.com>

s390: enable switchdev support in defconfig

The HiperSockets Converged Interface (HSCI) introduced with commit
4e20e73e631a ("s390/qeth: Switchdev event handler") requires
CONFIG_SWITCHDEV=y to be usable. Similarly when using Linux controlled
SR-IOV capable PF devices with the mlx5_core driver CONFIG_SWITCHDEV=y
as well as CONFIG_MLX5_ESWITCH=y are necessary to actually get link on
the created VFs. So let's add these to the defconfig to make both types
of devices usable. Note also that these options are already enabled in
most current distribution kernels.

Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

# 3c088b1e 26-Nov-2021 Heiko Carstens <hca@linux.ibm.com>

s390: update defconfigs

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

# 1a446b24 07-Oct-2021 Heiko Carstens <hca@linux.ibm.com>

s390: update defconfigs

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

# 4b26ceac 01-Sep-2021 Heiko Carstens <hca@linux.ibm.com>

s390: update defconfigs

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

# 68c32eb2 06-Sep-2021 Heiko Carstens <hca@linux.ibm.com>

s390: remove xpram device driver

Support for expanded storage was only available until z13 and z/VM 6.3
respectively. However there haven't been any use cases a long time
before for this device driver.
Therefore remove it.

Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

# 92793224 29-Aug-2021 Heiko Carstens <hca@linux.ibm.com>

s390: remove SCHED_CORE from defconfigs

This causes too many problems. Enable it again when everything has
been sorted out.

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

# ecd92e21 31-Jul-2021 Heiko Carstens <hca@linux.ibm.com>

s390: update defconfigs

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

# 0cde560a 19-Jul-2021 Heiko Carstens <hca@linux.ibm.com>

s390: update defconfigs

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

# c30e5e9f 08-Jul-2021 Christian Borntraeger <borntraeger@de.ibm.com>

s390/defconfig: allow early device mapper disks

doing make install on an Ubuntu that is installed on an LVM will fail to
boot. Turns out that defconfig misses 2 device mapper related configs
for the Ubuntu initramfs.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Steffen Maier <maier@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

# f5b474de 28-Apr-2021 Thomas Huth <thuth@redhat.com>

s390/configs: change CONFIG_VIRTIO_CONSOLE to "m"

In former times, the virtio-console code had to be compiled into
the kernel since the old guest virtio transport had some hard de-
pendencies. But since the old virtio transport has been removed in
commit 7fb2b2d51244 ("s390/virtio: remove the old KVM virtio transport"),
we do not have this limitation anymore.
Commit bb533ec8bacd ("s390/config: do not select VIRTIO_CONSOLE via
Kconfig") then also lifted the hard setting in the Kconfig system, so
we can finally switch the CONFIG_VIRTIO_CONSOLE knob to compile this
driver as a module now, making it more flexible for the user to only
load it if it is really required.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Link: https://lore.kernel.org/r/20210428082442.321327-1-thuth@redhat.com
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

# f53a6366 26-Apr-2021 Niklas Schnelle <schnelle@linux.ibm.com>

s390/configs: enable CONFIG_PCI_IOV

All major distributions ship with CONFIG_PCI_IOV=y so let us enable it
for our defconfigs as well.

Note also that since commit e5794cf1a270 ("s390/pci: create links
between PFs and VFs") we enabled proper linking between PFs and their
associated VFs so with this commit and its fixes applied we can fully
support handling SR-IOV enabled PFs.

Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

# 4dd4269e 10-Apr-2021 Heiko Carstens <hca@linux.ibm.com>

s390: update defconfigs

Set CONFIG_FRAME_WARN to 2048, which is the default for 64 bit architectures.

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

# d50aa69d 01-Mar-2021 Heiko Carstens <hca@linux.ibm.com>

s390: update defconfigs

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

# 36794822 02-Feb-2021 Christoph Hellwig <hch@lst.de>

module: remove EXPORT_UNUSED_SYMBOL*

EXPORT_UNUSED_SYMBOL* is not actually used anywhere. Remove the
unused functionality as we generally just remove unused code anyway.

Reviewed-by: Miroslav Benes <mbenes@suse.cz>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jessica Yu <jeyu@kernel.org>

# 42d7ccca 04-Feb-2021 Halil Pasic <pasic@linux.ibm.com>

s390/defconfig: add some NFT modules

Since Fedora 33 the virtualization stack of Fedora requires a couple of
netfilter modules to function properly. Let's add these to defconfig and

Signed-off-by: Halil Pasic <pasic@linux.ibm.com>
Reported-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Tested-by: Bjoern Walk <bwalk@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

# d010b378 28-Jan-2021 Alexander Egorenkov <egorenar@linux.ibm.com>

s390: update defconfigs

Disable CONFIG_TMPFS_INODE64 which is currently broken on s390x
because size of ino_t on s390x is 4 bytes.

This fixes the following error with kdump:

[ 9.415082] [608]: Remounting '/' read-only in with options 'size=238372k,nr_inodes=59593,inode64'.
[ 9.415093] rootfs: Cannot use inode64 with <64bit inums in kernel
[ 9.415093]
[ 9.415100] [608]: Failed to remount '/' read-only: Invalid argument

Fixes: 5c60ed283e1d ("s390: update defconfigs")
Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

# 0fa461ca 14-Jan-2021 Viresh Kumar <viresh.kumar@linaro.org>

arch: s390: Remove CONFIG_OPROFILE support

The "oprofile" user-space tools don't use the kernel OPROFILE support
any more, and haven't in a long time. User-space has been converted to
the perf interfaces.

Remove the old oprofile's architecture specific support.

Suggested-by: Christoph Hellwig <hch@infradead.org>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Robert Richter <rric@kernel.org>
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Acked-by: William Cohen <wcohen@redhat.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Thomas Gleixner <tglx@linutronix.de>

# 56e62a73 21-Nov-2020 Sven Schnelle <svens@linux.ibm.com>

s390: convert to generic entry

This patch converts s390 to use the generic entry infrastructure from

There are a few special things on s390:

- PIF_PER_TRAP is moved to TIF_PER_TRAP as the generic code doesn't
know about our PIF flags in exit_to_user_mode_loop().

- The old code had several ways to restart syscalls:

a) PIF_SYSCALL_RESTART, which was only set during execve to force a
restart after upgrading a process (usually qemu-kvm) to pgste page
table extensions.

b) PIF_SYSCALL, which is set by do_signal() to indicate that the
current syscall should be restarted. This is changed so that
do_signal() now also uses PIF_SYSCALL_RESTART. Continuing to use
PIF_SYSCALL doesn't work with the generic code, and changing it
more unique.

- On s390 calling sys_sigreturn or sys_rt_sigreturn is implemented by
executing a svc instruction on the process stack which causes a fault.
While handling that fault the fault code sets PIF_SYSCALL to hand over
processing to the syscall code on exit to usermode.

The patch introduces PIF_SYSCALL_RET_SET, which is set if ptrace sets
a return value for a syscall. The s390x ptrace ABI uses r2 both for the
syscall number and return value, so ptrace cannot set the syscall number +
return value at the same time. The flag makes handling that a bit easier.
do_syscall() will just skip executing the syscall if PIF_SYSCALL_RET_SET
is set.

CONFIG_DEBUG_ASCE was removd in favour of the generic CONFIG_DEBUG_ENTRY.
CR1/7/13 will be checked both on kernel entry and exit to contain the
correct asces.

Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

# ac94a291 15-Jan-2021 Heiko Carstens <hca@linux.ibm.com>

s390: update defconfigs

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

# 742eb475 18-Nov-2020 Heiko Carstens <hca@linux.ibm.com>

s390: update defconfigs

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

# 9c84f229 14-Dec-2020 John Hubbard <jhubbard@nvidia.com>

mm/gup_benchmark: rename to mm/gup_test

Patch series "selftests/vm: gup_test, hmm-tests, assorted improvements", v3.

Summary: This series provides two main things, and a number of smaller
supporting goodies. The two main points are:

1) Add a new sub-test to gup_test, which in turn is a renamed version
of gup_benchmark. This sub-test allows nicer testing of dump_pages(),
at least on user-space pages.

For quite a while, I was doing a quick hack to gup_test.c whenever I
wanted to try out changes to dump_page(). Then Matthew Wilcox asked me
what I meant when I said "I used my dump_page() unit test", and I
realized that it might be nice to check in a polished up version of

Details about how it works and how to use it are in the commit
description for patch #6 ("selftests/vm: gup_test: introduce the
dump_pages() sub-test").

2) Fixes a limitation of hmm-tests: these tests are incredibly useful,
but only if people actually build and run them. And it turns out that
libhugetlbfs is a little too effective at throwing a wrench in the
works, there. So I've added a little configuration check that removes
just two of the 21 hmm-tests, if libhugetlbfs is not available.

Further details in the commit description of patch #8
("selftests/vm: hmm-tests: remove the libhugetlbfs dependency").

Other smaller things that this series does:

a) Remove code duplication by creating gup_test.h.

b) Clear up the sub-test organization, and their invocation within

c) Other minor assorted improvements.

[1] v2 is here:

[2] https://lore.kernel.org/r/CAHk-=wgh-TMPHLY3jueHX7Y2fWh3D+nMBqVS__AZm6-oorquWA@mail.gmail.com

This patch (of 9):

Rename nearly every "gup_benchmark" reference and file name to "gup_test".
The one exception is for the actual gup benchmark test itself.

The current code already does a *little* bit more than benchmarking, and
definitely covers more than get_user_pages_fast(). More importantly,
however, subsequent patches are about to add some functionality that is
non-benchmark related.

Closely related changes:

* Kconfig: in addition to renaming the options from GUP_BENCHMARK to
GUP_TEST, update the help text to reflect that it's no longer a
benchmark-only test.

Link: https://lkml.kernel.org/r/20201026064021.3545418-1-jhubbard@nvidia.com
Link: https://lkml.kernel.org/r/20201026064021.3545418-2-jhubbard@nvidia.com
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Jérôme Glisse <jglisse@redhat.com>
Cc: Ralph Campbell <rcampbell@nvidia.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

# c3d9cdca 26-Oct-2020 Heiko Carstens <hca@linux.ibm.com>

s390: update defconfigs

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

# 08c8e685 09-Sep-2020 Heiko Carstens <hca@linux.ibm.com>

s390: add ARCH_HAS_DEBUG_WX support

Checks the whole kernel address space for W+X mappings. Note that
currently the first lowcore page unfortunately has to be mapped
W+X. Therefore this not reported as an insecure mapping.

For the very same reason the wording is also different to other
architectures if the test passes:

On s390 it is "no unexpected W+X pages found" instead of
"no W+X pages found".

Tested-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

# 9d719d39 04-Sep-2020 Heiko Carstens <hca@linux.ibm.com>

s390/mm,ptdump: convert to generic page table dumper

Make use of generic ptdump infrastructure.

Reviewed-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

# 5c60ed28 01-Sep-2020 Heiko Carstens <hca@linux.ibm.com>

s390: update defconfigs

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

# 9e9f85e0 30-Jun-2020 Heiko Carstens <hca@linux.ibm.com>

s390: update defconfigs

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>

# bb533ec8 10-Mar-2020 Christian Borntraeger <borntraeger@de.ibm.com>

s390/config: do not select VIRTIO_CONSOLE via Kconfig

select does not ensure that dependencies are also selected. Instead of
selecting VIRTIO_CONSOLE from S390_GUEST we should rather add this to
the defconfigs. So we update those as well.

Reported-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

# b16c3724 13-Feb-2020 Christian Borntraeger <borntraeger@de.ibm.com>


The guest support for protected virtualization is default on most

Also refresh defconfig and debug_defconfig.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

# 61c31347 04-Oct-2019 Heiko Carstens <hca@linux.ibm.com>

s390: update defconfigs

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

# 3c2eb6b7 14-Aug-2019 Joerg Schmidbauer <jschmidb@de.ibm.com>

s390/crypto: Support for SHA3 via CPACF (MSA6)

This patch introduces sha3 support for s390.

- Rework the s390-specific SHA1 and SHA2 related code to
provide the basis for SHA3.
- Provide two new kernel modules sha3_256_s390 and
sha3_512_s390 together with new kernel options.

Signed-off-by: Joerg Schmidbauer <jschmidb@de.ibm.com>
Reviewed-by: Ingo Franzki <ifranzki@linux.ibm.com>
Reviewed-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>

# 99d5cadf 19-Aug-2019 Jiri Bohac <jbohac@suse.cz>


This is a preparatory patch for kexec_file_load() lockdown. A locked down
kernel needs to prevent unsigned kernel images from being loaded with
kexec_file_load(). Currently, the only way to force the signature
verification is compiling with KEXEC_VERIFY_SIG. This prevents loading
usigned images even when the kernel is not locked down at runtime.

Analogous to the MODULE_SIG and MODULE_SIG_FORCE for modules, KEXEC_SIG
turns on the signature verification but allows unsigned images to be
loaded. KEXEC_SIG_FORCE disallows images without a valid signature.

Signed-off-by: Jiri Bohac <jbohac@suse.cz>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Matthew Garrett <mjg59@google.com>
cc: kexec@lists.infradead.org
Signed-off-by: James Morris <jmorris@namei.org>

# 3361f319 25-Jul-2019 Heiko Carstens <hca@linux.ibm.com>

s390: update configs

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

# d1523a8f 17-Jun-2019 Heiko Carstens <hca@linux.ibm.com>

s390: replace defconfig with performance_defconfig

Replace defconfig with performance_defconfig. defconfig had some more
or less random debug options enabled, where nobody knows why anymore.

Just remove the old defconfig and replace it with performance_defconfig,
which reduces the number of configs to maintain. A config with debugging
options enabled is debug_defconfig which is supposed to be rather close
to performance_defconfig except that is has debug options enabled.

Acked-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

# 39c00378 02-Jan-2019 Martin Schwidefsky <schwidefsky@de.ibm.com>

Update default configuration

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>

# 10400c40 04-Jun-2019 Krzysztof Kozlowski <krzk@kernel.org>

s390/configs: remove useless UEVENT_HELPER_PATH

1. It is disabled since commit 1be01d4a5714 ("driver: base: Disable
CONFIG_UEVENT_HELPER by default") as its dependency (UEVENT_HELPER) was
made default to 'n',
2. It is not recommended (help message: "This should not be used today
[...] creates a high system load") and was kept only for ancient
3. Certain userland specifically requests it to be disabled (systemd
README: "Legacy hotplug slows down the system and confuses udev").

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>

# f3e20ad6 12-May-2019 Masahiro Yamada <yamada.masahiro@socionext.com>

s390: move arch/s390/defconfig to arch/s390/configs/defconfig

As of Linux 5.1, alpha and s390 are the last architectures that
have defconfig in arch/*/ instead of arch/*/configs/.

$ find arch -name defconfig | sort

The arch/$(ARCH)/defconfig is the hard-coded default in Kconfig,
and I want to deprecate it after evacuating the remaining defconfig
into the standard location, arch/*/configs/.

Define KBUILD_DEFCONFIG like other architectures, and move defconfig
into the configs/ subdirectory.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>