lib/crc: remove unnecessary prompt for CONFIG_CRC_ITU_T

All modules that need CONFIG_CRC_ITU_T already select it, so there is no
need to bother users about the option.

Reviewed-by: Christoph Hellwi

lib/crc: remove unnecessary prompt for CONFIG_CRC_ITU_T

All modules that need CONFIG_CRC_ITU_T already select it, so there is no
need to bother users about the option.

Reviewed-by: Christoph Hellwig <[email protected]>
Reviewed-by: "Martin K. Petersen" <[email protected]>
Acked-by: Ard Biesheuvel <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Eric Biggers <[email protected]>

show more ...

lib/crc: remove unnecessary prompt for CONFIG_CRC16

All modules that need CONFIG_CRC16 already select it, so there is no
need to bother users about the option.

Reviewed-by: Christoph Hellwig <hch@l

lib/crc: remove unnecessary prompt for CONFIG_CRC16

All modules that need CONFIG_CRC16 already select it, so there is no
need to bother users about the option.

Reviewed-by: Christoph Hellwig <[email protected]>
Reviewed-by: "Martin K. Petersen" <[email protected]>
Acked-by: Ard Biesheuvel <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Eric Biggers <[email protected]>

show more ...

cxl: Remove driver

Remove the cxl driver that provides support for the IBM Coherent
Accelerator Processor Interface. Revert or clean up associated code in
arch/powerpc that is no longer necessary.

cxl: Remove driver

Remove the cxl driver that provides support for the IBM Coherent
Accelerator Processor Interface. Revert or clean up associated code in
arch/powerpc that is no longer necessary.

cxl has received minimal maintenance for several years, and is not
supported on the Power10 processor. We aren't aware of any users who are
likely to be using recent kernels.

Thanks to Mikey Neuling, Ian Munsie, Daniel Axtens, Frederic Barrat,
Christophe Lombard, Philippe Bergheaud, Vaibhav Jain and Alastair
D'Silva for their work on this driver over the years.

Signed-off-by: Andrew Donnellan <[email protected]>
Acked-by: Frederic Barrat <[email protected]>
Acked-by: Madhavan Srinivasan <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]>
Link: https://patch.msgid.link/[email protected]

show more ...

lib/crc: remove unnecessary prompt for CONFIG_LIBCRC32C

All modules that need CONFIG_LIBCRC32C already select it, so there is no
need to bother users about the option.

Acked-by: Ard Biesheuvel <ard

lib/crc: remove unnecessary prompt for CONFIG_LIBCRC32C

All modules that need CONFIG_LIBCRC32C already select it, so there is no
need to bother users about the option.

Acked-by: Ard Biesheuvel <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Eric Biggers <[email protected]>

show more ...

cred: get rid of CONFIG_DEBUG_CREDENTIALS

This code is rarely (never?) enabled by distros, and it hasn't caught
anything in decades. Let's kill off this legacy debug code.

Suggested-by: Linus Torva

cred: get rid of CONFIG_DEBUG_CREDENTIALS

This code is rarely (never?) enabled by distros, and it hasn't caught
anything in decades. Let's kill off this legacy debug code.

Suggested-by: Linus Torvalds <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

show more ...

powerpc/config: Disable SLAB_DEBUG_ON in skiroot

In 5.10 commit 5e84dd547bce ("powerpc/configs/skiroot: Enable some more
hardening options") set SLUB_DEBUG_ON.

When 5.14 came around, commit 7927029

powerpc/config: Disable SLAB_DEBUG_ON in skiroot

In 5.10 commit 5e84dd547bce ("powerpc/configs/skiroot: Enable some more
hardening options") set SLUB_DEBUG_ON.

When 5.14 came around, commit 792702911f58 ("slub: force on
no_hash_pointers when slub_debug is enabled") print all the
pointers when SLUB_DEBUG_ON is set. This was fine, but in 5.12 commit
5ead723a20e0 ("lib/vsprintf: no_hash_pointers prints all addresses as
unhashed") added the warning at boot.

Disable SLAB_DEBUG_ON as we don't want the nasty warning. We have
CONFIG_EXPERT so SLAB_DEBUG is enabled. We do lose the settings in
DEBUG_DEFAULT_FLAGS, but it's not clear that these should have been
always-on anyway.

Signed-off-by: Joel Stanley <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]>
Link: https://msgid.link/[email protected]

show more ...

ixgb: Remove ixgb driver

There are likely no users of this driver as the hardware has been
discontinued since 2010. Remove the driver and all references to it
in documentation.

Suggested-by: Jakub

ixgb: Remove ixgb driver

There are likely no users of this driver as the hardware has been
discontinued since 2010. Remove the driver and all references to it
in documentation.

Suggested-by: Jakub Kicinski <[email protected]>
Signed-off-by: Tony Nguyen <[email protected]>
Acked-by: Jesse Brandeburg <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

show more ...

powerpc/configs: Update config files for removed/renamed symbols

Clean up config files by:
- removing configs that were deleted in the past
- removing configs not in tree and without recently pe

powerpc/configs: Update config files for removed/renamed symbols

Clean up config files by:
- removing configs that were deleted in the past
- removing configs not in tree and without recently pending patches
- adding new configs that are replacements for old configs in the file

For some detailed information, see:
https://lore.kernel.org/kernel-janitors/[email protected]/

Renamed:
- CONFIG_PPC_PTDUMP -> CONFIG_GENERIC_PTDUMP
e084728393a5 ("powerpc/ptdump: Convert powerpc to GENERIC_PTDUMP")

Removed:
- CONFIG_BLK_DEV_CRYPTOLOOP
47e9624616c8 ("block: remove support for cryptoloop and the xor transfer")

- CONFIG_CRYPTO_RMD128
b21b9a5e0aef ("crypto: rmd128 - remove RIPE-MD 128 hash algorithm")

- CONFIG_CRYPTO_RMD256
c15d4167f0b0 ("crypto: rmd256 - remove RIPE-MD 256 hash algorithm")

- CONFIG_CRYPTO_RMD320
93f64202926f ("crypto: rmd320 - remove RIPE-MD 320 hash algorithm")

- CONFIG_CRYPTO_SALSA20
663f63ee6d9c ("crypto: salsa20 - remove Salsa20 stream cipher algorithm")

- CONFIG_CRYPTO_TGR192
87cd723f8978 ("crypto: tgr192 - remove Tiger 128/160/192 hash algorithms")

- CONFIG_HARDENED_USERCOPY_PAGESPAN
1109a5d90701 ("usercopy: Remove HARDENED_USERCOPY_PAGESPAN")

- CONFIG_RAPIDIO_TSI568, CONFIG_RAPIDIO_TSI57X
612d4904191f ("rapidio: remove not used code about RIO_VID_TUNDRA")

- CONFIG_RAW_DRIVER
603e4922f1c8 ("remove the raw driver")

- CONFIG_ROCKETPORT
3b00b6af7a5b ("tty: rocket, remove the driver")

- CONFIG_ENABLE_MUST_CHECK
196793946264 ("Compiler Attributes: remove CONFIG_ENABLE_MUST_CHECK")

Signed-off-by: Lukas Bulwahn <[email protected]>
[mpe: Add documentation of relevant commit for each symbol change]
Signed-off-by: Michael Ellerman <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

show more ...

mm: remove HARDENED_USERCOPY_FALLBACK

This has served its purpose and is no longer used. All usercopy
violations appear to have been handled by now, any remaining instances
(or new bugs) will cause

mm: remove HARDENED_USERCOPY_FALLBACK

This has served its purpose and is no longer used. All usercopy
violations appear to have been handled by now, any remaining instances
(or new bugs) will cause copies to be rejected.

This isn't a direct revert of commit 2d891fbc3bb6 ("usercopy: Allow
strict enforcement of whitelists"); since usercopy_fallback is
effectively 0, the fallback handling is removed too.

This also removes the usercopy_fallback module parameter on slab_common.

Link: https://github.com/KSPP/linux/issues/153
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Stephen Kitt <[email protected]>
Suggested-by: Kees Cook <[email protected]>
Acked-by: Kees Cook <[email protected]>
Reviewed-by: Joel Stanley <[email protected]> [defconfig change]
Acked-by: David Rientjes <[email protected]>
Cc: Christoph Lameter <[email protected]>
Cc: Pekka Enberg <[email protected]>
Cc: Joonsoo Kim <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Cc: James Morris <[email protected]>
Cc: "Serge E . Hallyn" <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

show more ...

powerpc/64s: Default to 64K pages for 64 bit book3s

For 64-bit book3s the default should be 64K as that's what modern CPUs
are designed for.

The following defconfigs already set CONFIG_PPC_64K_PAGE

powerpc/64s: Default to 64K pages for 64 bit book3s

For 64-bit book3s the default should be 64K as that's what modern CPUs
are designed for.

The following defconfigs already set CONFIG_PPC_64K_PAGES:

cell_defconfig
pasemi_defconfig
powernv_defconfig
ppc64_defconfig
pseries_defconfig
skiroot_defconfig

The have the option removed from the defconfig, as it is now the
default.

The defconfigs that now need to set CONFIG_PPC_4K_PAGES to maintain
their existing behaviour are:

g5_defconfig
maple_defconfig
microwatt_defconfig
ps3_defconfig

Signed-off-by: Joel Stanley <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]>
BugLink: https://github.com/linuxppc/issues/issues/109
Link: https://lore.kernel.org/r/[email protected]

show more ...

powerpc/configs: Remove CMDLINE_BOOL

Regenerate defconfigs to remove CONFIG_CMDLINE_BOOL and the default
CONFIG_CMDLINE where applicable.

Signed-off-by: Chris Packham <[email protected]

powerpc/configs: Remove CMDLINE_BOOL

Regenerate defconfigs to remove CONFIG_CMDLINE_BOOL and the default
CONFIG_CMDLINE where applicable.

Signed-off-by: Chris Packham <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

show more ...

scsi: sr: remove references to BLK_DEV_SR_VENDOR, leave it enabled

This kernel configuration is basically enabling/disabling sr driver quirks
detection. While these quirks are for fairly rare device

scsi: sr: remove references to BLK_DEV_SR_VENDOR, leave it enabled

This kernel configuration is basically enabling/disabling sr driver quirks
detection. While these quirks are for fairly rare devices (very old CD
burners, and a glucometer), the additional detection of these models is a
very minimal amount of code.

The logic behind the quirks is always built into the sr driver.

This also removes the config from all the defconfig files that are enabling
this already.

Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Jens Axboe <[email protected]>
Signed-off-by: Diego Elio Pettenò <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

show more ...

powerpc/configs/skiroot: Enable some more hardening options

Enable more hardening options.

Note BUG_ON_DATA_CORRUPTION selects DEBUG_LIST and is essentially just
a synonym for it.

DEBUG_SG, DEBUG_

powerpc/configs/skiroot: Enable some more hardening options

Enable more hardening options.

Note BUG_ON_DATA_CORRUPTION selects DEBUG_LIST and is essentially just
a synonym for it.

DEBUG_SG, DEBUG_NOTIFIERS, DEBUG_LIST, DEBUG_CREDENTIALS and
SCHED_STACK_END_CHECK should all be low overhead and just add a few
extra checks.

SLAB_FREELIST_RANDOM, and SLUB_DEBUG_ON will add some overhead to the
SLAB allocator, but nothing that should be meaningful for skiroot.

Unselecting SLAB_MERGE_DEFAULT causes the SLAB to use more memory, but
the skiroot kernel shouldn't be memory constrained on any of our
systems, all it does is run a small bootloader.

Disabling merging has some security/robustness benefit as it means a
user-after-free or overflow will be limited to the objects in that
slab, rather than potentially affecting objects from unrelated slabs
that have been merged.

Note also that slab merging is disabled anyway by enabling
SLUB_DEBUG_ON, because of the SLAB_NEVER_MERGE mask.

Signed-off-by: Michael Ellerman <[email protected]>
Acked-by: Joel Stanley <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

show more ...

powerpc/configs/skiroot: Disable xmon default & enable reboot on panic

If the skiroot kernel crashes we don't want it sitting at an xmon
prompt forever. Instead it's more helpful to reboot and bring

powerpc/configs/skiroot: Disable xmon default & enable reboot on panic

If the skiroot kernel crashes we don't want it sitting at an xmon
prompt forever. Instead it's more helpful to reboot and bring the
boot loader back up, and if the crash was transient we can then boot
successfully.

Similarly if we panic we should reboot, with a short timeout in case
someone is watching the console.

Signed-off-by: Michael Ellerman <[email protected]>
Acked-by: Joel Stanley <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

show more ...

powerpc/configs/skiroot: Enable security features

This turns on HARDENED_USERCOPY with HARDENED_USERCOPY_PAGESPAN, and
FORTIFY_SOURCE.

It also enables SECURITY_LOCKDOWN_LSM with _EARLY and
LOCK_DOW

powerpc/configs/skiroot: Enable security features

This turns on HARDENED_USERCOPY with HARDENED_USERCOPY_PAGESPAN, and
FORTIFY_SOURCE.

It also enables SECURITY_LOCKDOWN_LSM with _EARLY and
LOCK_DOWN_KERNEL_FORCE_INTEGRITY options enabled. This still allows
xmon to be used in read-only mode.

MODULE_SIG is selected by lockdown, so it is still enabled.

Because we're setting LOCK_DOWN_KERNELFORCE_INTEGRITY=y we also need
to enable KEXEC_FILE=y so that kexec continues to work.

Signed-off-by: Joel Stanley <[email protected]>
[mpe: Switch to lockdown integrity mode per oohal, enable KEXEC_FILE
as reported by jms]
Signed-off-by: Michael Ellerman <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

show more ...

powerpc/configs/skiroot: Update for symbol movement only

Signed-off-by: Michael Ellerman <[email protected]>
Acked-by: Joel Stanley <[email protected]>
Link: https://lore.kernel.org/r/20200121043000.1

powerpc/configs/skiroot: Update for symbol movement only

Signed-off-by: Michael Ellerman <[email protected]>
Acked-by: Joel Stanley <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

show more ...

powerpc/configs/skiroot: Drop default n CONFIG_CRYPTO_ECHAINIV

It's default n so we don't need to disable it.

Signed-off-by: Michael Ellerman <[email protected]>
Acked-by: Joel Stanley <[email protected]

powerpc/configs/skiroot: Drop default n CONFIG_CRYPTO_ECHAINIV

It's default n so we don't need to disable it.

Signed-off-by: Michael Ellerman <[email protected]>
Acked-by: Joel Stanley <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

show more ...

powerpc/configs/skiroot: Drop HID_LOGITECH

Commit bdd08fff4915 ("HID: logitech: Add depends on LEDS_CLASS to
Logitech Kconfig entry") made HID_LOGITECH depend on LEDS_CLASS which
we do not enable, m

powerpc/configs/skiroot: Drop HID_LOGITECH

Commit bdd08fff4915 ("HID: logitech: Add depends on LEDS_CLASS to
Logitech Kconfig entry") made HID_LOGITECH depend on LEDS_CLASS which
we do not enable, meaning we are not actually enabling those drivers
any more.

The Kconfig help text suggests USB HID compliant Logictech devices
will continue to work without HID_LOGITECH, so just drop it.

Signed-off-by: Michael Ellerman <[email protected]>
Acked-by: Joel Stanley <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

show more ...

powerpc/configs: Drop NET_VENDOR_HP which moved to staging

The HP network driver moved to staging in commit 52340b82cf1a ("hp100:
Move 100BaseVG AnyLAN driver to staging") meaning we don't need to
d

powerpc/configs: Drop NET_VENDOR_HP which moved to staging

The HP network driver moved to staging in commit 52340b82cf1a ("hp100:
Move 100BaseVG AnyLAN driver to staging") meaning we don't need to
disable it any more in our defconfigs.

Signed-off-by: Michael Ellerman <[email protected]>
Acked-by: Joel Stanley <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

show more ...

powerpc/configs: NET_CADENCE became NET_VENDOR_CADENCE

The NET_CADENCE symbol was renamed to NET_VENDOR_CADENCE, so we don't
need to disable the former, see commit 0df5f81c481e ("net: ethernet:
Add

powerpc/configs: NET_CADENCE became NET_VENDOR_CADENCE

The NET_CADENCE symbol was renamed to NET_VENDOR_CADENCE, so we don't
need to disable the former, see commit 0df5f81c481e ("net: ethernet:
Add missing VENDOR to Cadence and Packet Engines symbols").

Signed-off-by: Michael Ellerman <[email protected]>
Acked-by: Joel Stanley <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

show more ...

powerpc/configs: Drop CONFIG_QLGE which moved to staging

The QLGE driver moved to staging in commit 955315b0dc8c ("qlge: Move
drivers/net/ethernet/qlogic/qlge/ to drivers/staging/qlge/"), meaning
ou

powerpc/configs: Drop CONFIG_QLGE which moved to staging

The QLGE driver moved to staging in commit 955315b0dc8c ("qlge: Move
drivers/net/ethernet/qlogic/qlge/ to drivers/staging/qlge/"), meaning
our defconfigs that enable it have no effect as we don't enable
CONFIG_STAGING.

It sounds like the device is obsolete, so drop the driver.

Signed-off-by: Michael Ellerman <[email protected]>
Acked-by: Joel Stanley <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

show more ...

powerpc/configs: remove obsolete CONFIG_INET_XFRM_MODE_* and CONFIG_INET6_XFRM_MODE_*

These Kconfig options has been removed in commit 4c145dce2601 ("xfrm:
make xfrm modes builtin") So there is no p

powerpc/configs: remove obsolete CONFIG_INET_XFRM_MODE_* and CONFIG_INET6_XFRM_MODE_*

These Kconfig options has been removed in commit 4c145dce2601 ("xfrm:
make xfrm modes builtin") So there is no point to keep it in
defconfigs any longer.

Signed-off-by: YueHaibing <[email protected]>
[mpe: Extract from cross arch patch]
Signed-off-by: Michael Ellerman <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

show more ...

powerpc/configs: add FADump awareness to skiroot_defconfig

FADump is supported on PowerNV platform. To fulfill this support, the
petitboot kernel must be FADump aware. Enable config PRESERVE_FA_DUMP

powerpc/configs: add FADump awareness to skiroot_defconfig

FADump is supported on PowerNV platform. To fulfill this support, the
petitboot kernel must be FADump aware. Enable config PRESERVE_FA_DUMP
to make the petitboot kernel FADump aware.

Signed-off-by: Hari Bathini <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]>
Link: https://lore.kernel.org/r/157062986936.23016.10146169203560084401.stgit@hbathini.in.ibm.com

show more ...

powerpc/configs: Disable /dev/port in skiroot defconfig

While reviewing lockdown patches, I discovered that we still enable
/dev/port (CONFIG_DEVPORT) in skiroot.

/dev/port is used for old x86 styl

powerpc/configs: Disable /dev/port in skiroot defconfig

While reviewing lockdown patches, I discovered that we still enable
/dev/port (CONFIG_DEVPORT) in skiroot.

/dev/port is used for old x86 style IO accesses. It's set up in
drivers/char/mem.c, and is only created if arch_has_dev_port() returns
true. Per arch/powerpc/include/asm/io.h, on PPC64 with PCI, this is
only true if there's a legacy ISA bridge.

Even if a system has a legacy ISA bridge installed, we have no
business accessing it in skiroot.

Deselect CONFIG_DEVPORT for skiroot.

Signed-off-by: Daniel Axtens <[email protected]>
[mpe: Incorporate emailed comments into the change log]
Signed-off-by: Michael Ellerman <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

show more ...

powerpc/configs: Remove useless UEVENT_HELPER_PATH

Remove the CONFIG_UEVENT_HELPER_PATH because:
1. It is disabled since commit 1be01d4a5714 ("driver: base: Disable
CONFIG_UEVENT_HELPER by defaul

powerpc/configs: Remove useless UEVENT_HELPER_PATH

Remove the CONFIG_UEVENT_HELPER_PATH because:
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
userland,
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 <[email protected]>
Acked-by: Geert Uytterhoeven <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]>

show more ...