Jens Axboe [Tue, 11 Aug 2020 14:04:14 +0000 (08:04 -0600)]
io_uring: hold 'ctx' reference around task_work queue + execute
We're holding the request reference, but we need to go one higher
to ensure that the ctx remains valid after the request has finished.
If the ring is closed with pending task_work inflight, and the
given io_kiocb finishes sync during issue, then we need a reference
to the ring itself around the task_work execution cycle.
Jens Axboe [Tue, 11 Aug 2020 00:44:24 +0000 (18:44 -0600)]
fs: RWF_NOWAIT should imply IOCB_NOIO
With the change allowing read-ahead for IOCB_NOWAIT, we changed the
RWF_NOWAIT semantics of only doing cached reads. Since we know have
IOCB_NOIO to manage that specific side of it, just make RWF_NOWAIT
imply IOCB_NOIO as well to restore the previous behavior.
loop: unset GENHD_FL_NO_PART_SCAN on LOOP_CONFIGURE
When LOOP_CONFIGURE is used with LO_FLAGS_PARTSCAN we need to propagate
this into the GENHD_FL_NO_PART_SCAN. LOOP_SETSTATUS does this,
LOOP_CONFIGURE doesn't so far. Effect is that setting up a loopback
device with partition scanning doesn't actually work when LOOP_CONFIGURE
is issued, though it works fine with LOOP_SETSTATUS.
Let's correct that and propagate the flag in LOOP_CONFIGURE too.
Hui Wang [Tue, 11 Aug 2020 12:24:30 +0000 (20:24 +0800)]
ALSA: hda - reverse the setting value in the micmute_led_set
Before the micmute_led_set() is introduced, the function of
alc_gpio_micmute_update() will set the gpio value with the
!micmute_led.led_value, and the machines have the correct micmute led
status. After the micmute_led_set() is introduced, it sets the gpio
value with !!micmute_led.led_value, so the led status is not correct
anymore, we need to set micmute_led_polarity = 1 to workaround it.
Now we fix the micmute_led_set() and remove micmute_led_polarity = 1.
Takashi Iwai [Mon, 3 Aug 2020 14:39:58 +0000 (16:39 +0200)]
ALSA: echoaduio: Drop superfluous volatile modifier
The dsp_registers field of struct echoaduio has the volatile modifier,
but it's basically superfluous; the field is accessed only for the
base pointer of readl() and writel(), hence marking with __iomem alone
should suffice. OTOH, having the volatile prefix causes a compile
warning like:
sound/pci/echoaudio/echoaudio.c:1878:14: warning: passing argument 1 of 'iounmap' discards 'volatile' qualifier from pointer target type [-Wdiscarded-qualifiers]
Xingxing Su [Tue, 11 Aug 2020 11:18:37 +0000 (07:18 -0400)]
KVM: MIPS/VZ: Fix build error caused by 'kvm_run' cleanup
Commit c34b26b98caca48ec9ee9 ("KVM: MIPS: clean up redundant 'kvm_run'
parameters") remove the 'kvm_run' parameter in kvm_vz_gpsi_lwc2.
The following build error:
arch/mips/kvm/vz.c: In function 'kvm_trap_vz_handle_gpsi':
arch/mips/kvm/vz.c:1243:43: error: 'run' undeclared (first use in this function)
er = kvm_vz_gpsi_lwc2(inst, opc, cause, run, vcpu);
^~~
arch/mips/kvm/vz.c:1243:43: note: each undeclared identifier is reported only
once for each function it appears in
scripts/Makefile.build:283: recipe for target 'arch/mips/kvm/vz.o' failed
make[2]: *** [arch/mips/kvm/vz.o] Error 1
scripts/Makefile.build:500: recipe for target 'arch/mips/kvm' failed
make[1]: *** [arch/mips/kvm] Error 2
Makefile:1785: recipe for target 'arch/mips' failed
make: *** [arch/mips] Error 2
Michael Kelley [Mon, 10 Aug 2020 01:29:51 +0000 (18:29 -0700)]
x86/hyperv: Make hv_setup_sched_clock inline
Make hv_setup_sched_clock inline so the reference to pv_ops works
correctly with objtool updates to detect noinstr violations.
See https://lore.kernel.org/patchwork/patch/1283635/
Oscar Carter [Sat, 4 Jul 2020 15:50:57 +0000 (17:50 +0200)]
parisc/kernel/ftrace: Remove function callback casts
In an effort to enable -Wcast-function-type in the top-level Makefile to
support Control Flow Integrity builds, remove all the function callback
casts.
The function dereference_function_descriptor() takes on hppa64, ppc64
and ia64 a pointer to a function descriptor and returns a (void) pointer
to the dereferenced function.
To make cross-arch coding easier, on all other architectures the
dereference_function_descriptor() macro should return a void pointer
too.
zonefs: update documentation to reflect zone size vs capacity
Update the zonefs documentation to reflect the difference between a zone's
size and it's capacity.
The maximum file size in zonefs is the zones capacity, for ZBC and ZAC
based devices, which do not have a separate zone capacity, the zone
capacity is equal to the zone size.
In the zoned storage model, the sectors within a zone are typically all
writeable. With the introduction of the Zoned Namespace (ZNS) Command
Set in the NVM Express organization, the model was extended to have a
specific writeable capacity.
This zone capacity can be less than the overall zone size for a NVMe ZNS
device or null_blk in zoned-mode. For other ZBC/ZAC devices the zone
capacity is always equal to the zone size.
Use the zone capacity field instead from blk_zone for determining the
maximum inode size and inode blocks in zonefs.
With support for 32-bit pv guests gone pure pv-code no longer needs to
test for highmem. Dropping those tests removes the need for flushing
in some places.
Juergen Gross [Mon, 29 Jun 2020 08:35:39 +0000 (10:35 +0200)]
x86/xen: remove 32-bit Xen PV guest support
Xen is requiring 64-bit machines today and since Xen 4.14 it can be
built without 32-bit PV guest support. There is no need to carry the
burden of 32-bit PV guest support in the kernel any longer, as new
guests can be either HVM or PVH, or they can use a 64 bit kernel.
Linus Torvalds [Tue, 11 Aug 2020 02:21:38 +0000 (19:21 -0700)]
Merge tag 'perf-tools-2020-08-10' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux
Pull perf tools updates from Arnaldo Carvalho de Melo:
"New features:
- Introduce controlling how 'perf stat' and 'perf record' works via a
control file descriptor, allowing starting with events configured
but disabled until commands are received via the control file
descriptor. This allows, for instance for tools such as Intel VTune
to make further use of perf as its Linux platform driver.
- Improve 'perf record' to to register in a perf.data file header the
clockid used to help later correlate things like syslog files and
perf events recorded.
- Add basic syscall and find_next_bit benchmarks to 'perf bench'.
- Allow using computed metrics in calculating other metrics. For
instance:
- Add suport for 'd_ratio', '>' and '<' operators to the expression
resolver used in calculating metrics in 'perf stat'.
Support for new kernel features:
- Support TEXT_POKE and KSYMBOL_TYPE_OOL perf metadata events to cope
with things like ftrace, trampolines, i.e. changes in the kernel
text that gets in the way of properly decoding Intel PT hardware
traces, for instance.
Intel PT:
- Add various knobs to reduce the volume of Intel PT traces by
reducing the level of details such as decoding just some types of
packets (e.g., FUP/TIP, PSB+), also filtering by time range.
- Add new itrace options (log flags to the 'd' option, error flags to
the 'e' one, etc), controlling how Intel PT is transformed into
perf events, document some missing options (e.g., how to synthesize
callchains).
BPF:
- Properly report BPF errors when parsing events.
- Do not setup side-band events if LIBBPF is not linked, fixing a
segfault.
Libraries:
- Improvements to the libtraceevent plugin mechanism.
- Improve libtracevent support for KVM trace events SVM exit reasons.
- Add a libtracevent plugins for decoding syscalls/sys_enter_futex
and for tlb_flush.
- Ensure sample_period is set libpfm4 events in 'perf test'.
- Fixup libperf namespacing, to make sure what is in libperf has the
perf_ namespace while what is now only in tools/perf/ doesn't use
that prefix.
Arch specific:
- Improve the testing of vendor events and metrics in 'perf test'.
- Allow no ARM CoreSight hardware tracer sink to be specified on
command line.
- Fix arm_spe_x recording when mixed with other perf events.
- Add s390 idle functions 'psw_idle' and 'psw_idle_exit' to list of
idle symbols.
- List kernel supplied event aliases for arm64 in 'perf list'.
- Add support for extended register capability in PowerPC 9 and 10.
- Added nest IMC power9 metric events.
Miscellaneous:
- No need to setup sample_regs_intr/sample_regs_user for dummy
events.
- Update various copies of kernel headers, some causing perf to
handle new syscalls, MSRs, etc.
- Improve usage of flex and yacc, enabling warnings and addressing
the fallout.
- Add missing '--output' option to 'perf kmem' so that it can pass it
along to 'perf record'.
- 'perf probe' fixes related to adding multiple probes on the same
address for the same event.
- Make 'perf probe' warn if the target function is a GNU indirect
function.
- Remove //anon mmap events from 'perf inject jit' to fix supporting
both using ELF files for generated functions and the perf-PID.map
approaches"
* tag 'perf-tools-2020-08-10' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (144 commits)
perf record: Skip side-band event setup if HAVE_LIBBPF_SUPPORT is not set
perf tools powerpc: Add support for extended regs in power10
perf tools powerpc: Add support for extended register capability
tools headers UAPI: Sync drm/i915_drm.h with the kernel sources
tools arch x86: Sync asm/cpufeatures.h with the kernel sources
tools arch x86: Sync the msr-index.h copy with the kernel sources
tools headers UAPI: update linux/in.h copy
tools headers API: Update close_range affected files
perf script: Add 'tod' field to display time of day
perf script: Change the 'enum perf_output_field' enumerators to be 64 bits
perf data: Add support to store time of day in CTF data conversion
perf tools: Move clockid_res_ns under clock struct
perf header: Store clock references for -k/--clockid option
perf tools: Add clockid_name function
perf clockid: Move parse_clockid() to new clockid object
tools lib traceevent: Handle possible strdup() error in tep_add_plugin_path() API
libtraceevent: Fixed description of tep_add_plugin_path() API
libtraceevent: Fixed type in PRINT_FMT_STING
libtraceevent: Fixed broken indentation in parse_ip4_print_args()
libtraceevent: Improve error handling of tep_plugin_add_option() API
...
Linus Torvalds [Tue, 11 Aug 2020 02:16:26 +0000 (19:16 -0700)]
Merge tag 'ktest-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest
Pull ktest updates from Steven Rostedt:
- Have config-bisect save the good/bad configs at each step.
- Show log file location even on success
- Add PRE_TEST_DIE to kill test if the PRE_TEST fails
- Add a NOT operator for conditionals in config file
- Add the log output of the last test when emailing on failure.
- Other minor clean ups and small fixes.
* tag 'ktest-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest:
ktest.pl: Fix spelling mistake "Cant" -> "Can't"
ktest.pl: Change the logic to control the size of the log file emailed
ktest.pl: Add MAIL_MAX_SIZE to limit the amount of log emailed
ktest.pl: Add the log of last test in email on failure
ktest.pl: Turn off buffering to the log file
ktest.pl: Just open up the log file once
ktest.pl: Add a NOT operator
ktest.pl: Define PRE_TEST_DIE to kill the test if the PRE_TEST fails
ktest.pl: Always show log file location if defined even on success
ktest.pl: Have config-bisect save each config used in the bisect
Linus Torvalds [Tue, 11 Aug 2020 02:07:44 +0000 (19:07 -0700)]
Merge tag 'locking-urgent-2020-08-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Thomas Gleixner:
"A set of locking fixes and updates:
- Untangle the header spaghetti which causes build failures in
various situations caused by the lockdep additions to seqcount to
validate that the write side critical sections are non-preemptible.
- The seqcount associated lock debug addons which were blocked by the
above fallout.
seqcount writers contrary to seqlock writers must be externally
serialized, which usually happens via locking - except for strict
per CPU seqcounts. As the lock is not part of the seqcount, lockdep
cannot validate that the lock is held.
This new debug mechanism adds the concept of associated locks.
sequence count has now lock type variants and corresponding
initializers which take a pointer to the associated lock used for
writer serialization. If lockdep is enabled the pointer is stored
and write_seqcount_begin() has a lockdep assertion to validate that
the lock is held.
Aside of the type and the initializer no other code changes are
required at the seqcount usage sites. The rest of the seqcount API
is unchanged and determines the type at compile time with the help
of _Generic which is possible now that the minimal GCC version has
been moved up.
Adding this lockdep coverage unearthed a handful of seqcount bugs
which have been addressed already independent of this.
While generally useful this comes with a Trojan Horse twist: On RT
kernels the write side critical section can become preemtible if
the writers are serialized by an associated lock, which leads to
the well known reader preempts writer livelock. RT prevents this by
storing the associated lock pointer independent of lockdep in the
seqcount and changing the reader side to block on the lock when a
reader detects that a writer is in the write side critical section.
- Conversion of seqcount usage sites to associated types and
initializers"
* tag 'locking-urgent-2020-08-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (25 commits)
locking/seqlock, headers: Untangle the spaghetti monster
locking, arch/ia64: Reduce <asm/smp.h> header dependencies by moving XTP bits into the new <asm/xtp.h> header
x86/headers: Remove APIC headers from <asm/smp.h>
seqcount: More consistent seqprop names
seqcount: Compress SEQCNT_LOCKNAME_ZERO()
seqlock: Fold seqcount_LOCKNAME_init() definition
seqlock: Fold seqcount_LOCKNAME_t definition
seqlock: s/__SEQ_LOCKDEP/__SEQ_LOCK/g
hrtimer: Use sequence counter with associated raw spinlock
kvm/eventfd: Use sequence counter with associated spinlock
userfaultfd: Use sequence counter with associated spinlock
NFSv4: Use sequence counter with associated spinlock
iocost: Use sequence counter with associated spinlock
raid5: Use sequence counter with associated spinlock
vfs: Use sequence counter with associated spinlock
timekeeping: Use sequence counter with associated raw spinlock
xfrm: policy: Use sequence counters with associated lock
netfilter: nft_set_rbtree: Use sequence counter with associated rwlock
netfilter: conntrack: Use sequence counter with associated spinlock
sched: tasks: Use sequence counter with associated spinlock
...
Dave Airlie [Tue, 11 Aug 2020 01:59:19 +0000 (11:59 +1000)]
Merge tag 'drm-misc-fixes-2020-08-04' of git://anongit.freedesktop.org/drm/drm-misc into drm-next
* backmerge from drm-fixes at v5.8-rc7
* add orientation quirk for ASUS T103HAF
* drm/omap: force runtime PM suspend on system suspend
* drm/tidss: fix modeset init for DPI panels
* re-added docs for drm_gem_flink_ioctl()
* ttm: fix page-offset calculation within TTM
Linus Torvalds [Tue, 11 Aug 2020 01:33:22 +0000 (18:33 -0700)]
Merge tag 'f2fs-for-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs
Pull f2fs updates from Jaegeuk Kim:
"In this round, we've added two small interfaces: (a) GC_URGENT_LOW
mode for performance and (b) F2FS_IOC_SEC_TRIM_FILE ioctl for
security.
The new GC mode allows Android to run some lower priority GCs in
background, while new ioctl discards user information without race
condition when the account is removed.
In addition, some patches were merged to address latency-related
issues. We've fixed some compression-related bug fixes as well as edge
race conditions.
Enhancements:
- add GC_URGENT_LOW mode in gc_urgent
- introduce F2FS_IOC_SEC_TRIM_FILE ioctl
- bypass racy readahead to improve read latencies
- shrink node_write lock coverage to avoid long latency
Bug fixes:
- fix missing compression flag control, i_size, and mount option
- fix deadlock between quota writes and checkpoint
- remove inode eviction path in synchronous path to avoid deadlock
- fix to wait GCed compressed page writeback
- fix a kernel panic in f2fs_is_compressed_page
- check page dirty status before writeback
- wait page writeback before update in node page write flow
- fix a race condition between f2fs_write_end_io and f2fs_del_fsync_node_entry
We've added some minor sanity checks and refactored trivial code
blocks for better readability and debugging information"
* tag 'f2fs-for-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (52 commits)
f2fs: prepare a waiter before entering io_schedule
f2fs: update_sit_entry: Make the judgment condition of f2fs_bug_on more intuitive
f2fs: replace test_and_set/clear_bit() with set/clear_bit()
f2fs: make file immutable even if releasing zero compression block
f2fs: compress: disable compression mount option if compression is off
f2fs: compress: add sanity check during compressed cluster read
f2fs: use macro instead of f2fs verity version
f2fs: fix deadlock between quota writes and checkpoint
f2fs: correct comment of f2fs_exist_written_data
f2fs: compress: delay temp page allocation
f2fs: compress: fix to update isize when overwriting compressed file
f2fs: space related cleanup
f2fs: fix use-after-free issue
f2fs: Change the type of f2fs_flush_inline_data() to void
f2fs: add F2FS_IOC_SEC_TRIM_FILE ioctl
f2fs: should avoid inode eviction in synchronous path
f2fs: segment.h: delete a duplicated word
f2fs: compress: fix to avoid memory leak on cc->cpages
f2fs: use generic names for generic ioctls
f2fs: don't keep meta inode pages used for compressed block migration
...
Linus Torvalds [Tue, 11 Aug 2020 01:22:43 +0000 (18:22 -0700)]
Merge tag 'gfs2-for-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2
Pull gfs2 updates from Andreas Gruenbacher:
- Make sure transactions won't be started recursively in
gfs2_block_zero_range (bug introduced in 5.4 when switching to
iomap_zero_range)
- Fix a glock holder refcount leak introduced in the iopen glock
locking scheme rework merged in 5.8.
- A few other small improvements (debugging, stack usage, comment
fixes).
* tag 'gfs2-for-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
gfs2: When gfs2_dirty_inode gets a glock error, dump the glock
gfs2: Never call gfs2_block_zero_range with an open transaction
gfs2: print details on transactions that aren't properly ended
gfs2: Fix inaccurate comment
fs: Fix typo in comment
gfs2: Fix refcount leak in gfs2_glock_poke
gfs2: Pass glock holder to gfs2_file_direct_{read,write}
gfs2: Add some flags missing from glock output
Linus Torvalds [Tue, 11 Aug 2020 01:20:04 +0000 (18:20 -0700)]
Merge tag 'for-linus-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs
Pull JFFS2, UBI and UBIFS updates from Richard Weinberger:
"JFFS2:
- Fix for a corner case while mounting
- Fix for an use-after-free issue
UBI:
- Fix for a memory load while attaching
- Don't produce an anchor PEB with fastmap being disabled
UBIFS:
- Fix for orphan inode logic
- Spelling fixes
- New mount option to specify filesystem version"
* tag 'for-linus-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs:
jffs2: fix UAF problem
jffs2: fix jffs2 mounting failure
ubifs: Fix wrong orphan node deletion in ubifs_jnl_update|rename
ubi: fastmap: Free fastmap next anchor peb during detach
ubi: fastmap: Don't produce the initial next anchor PEB when fastmap is disabled
ubifs: misc.h: delete a duplicated word
ubifs: add option to specify version for new file systems
Daniel Vetter [Thu, 6 Aug 2020 15:42:27 +0000 (17:42 +0200)]
drm/vmwgfx/stdu: Use drm_mode_config_reset
When converting to atomic the state reset was done by directly calling
the functions, and before the modeset object was fully initialized.
This means the various ->dev pointers weren't set up.
this started to oops because now we're trying to derefence
drm_crtc->dev. Fix this up by entirely switching over to
drm_mode_config_reset, called once everything is set up.
Dan Carpenter [Fri, 26 Jun 2020 10:39:59 +0000 (13:39 +0300)]
drm/vmwgfx: Fix two list_for_each loop exit tests
These if statements are supposed to be true if we ended the
list_for_each_entry() loops without hitting a break statement but they
don't work.
In the first loop, we increment "i" after the "if (i == unit)" condition
so we don't necessarily know that "i" is not equal to unit at the end of
the loop.
In the second loop we exit when mode is not pointing to a valid
drm_display_mode struct so it doesn't make sense to check "mode->type".
Fixes: a278724aa23c ("drm/vmwgfx: Implement fbdev on kms v2") Signed-off-by: Dan Carpenter <[email protected]> Reviewed-by: Roland Scheidegger <[email protected]> Signed-off-by: Roland Scheidegger <[email protected]>
Dan Carpenter [Fri, 26 Jun 2020 10:34:37 +0000 (13:34 +0300)]
drm/vmwgfx: Use correct vmw_legacy_display_unit pointer
The "entry" pointer is an offset from the list head and it doesn't
point to a valid vmw_legacy_display_unit struct. Presumably the
intent was to point to the last entry.
Also the "i++" wasn't used so I have removed that as well.
Fixes: d7e1958dbe4a ("drm/vmwgfx: Support older hardware.") Signed-off-by: Dan Carpenter <[email protected]> Reviewed-by: Roland Scheidegger <[email protected]> Signed-off-by: Roland Scheidegger <[email protected]>
Dave Airlie [Tue, 11 Aug 2020 00:56:11 +0000 (10:56 +1000)]
Merge tag 'drm-misc-next-fixes-2020-08-05' of git://anongit.freedesktop.org/drm/drm-misc into drm-next
drm-misc-next-fixes for v5.9-rc1:
- Fix drm_dp_mst_port refcount leaks in drm_dp_mst_allocate_vcpi
- Fix a fbcon OOB read in fbdev, found by syzbot.
- Mark vga_tryget static as it's not used elsewhere.
- Small fixes to xlnx.
- Remove null check for kfree in drm_dev_release.
- Fix DRM_FORMAT_MOD_AMLOGIC_FBC definition.
- Fix mode initialization in omap_connector_mode_valid().
Linus Torvalds [Mon, 10 Aug 2020 23:35:57 +0000 (16:35 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input updates from Dmitry Torokhov:
- an update to Elan touchpad controller driver supporting newer ICs
with enhanced precision reports and a new firmware update process
- an update to EXC3000 touch controller supporting additional parts
- assorted driver fixups
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (27 commits)
Input: exc3000 - add support to query model and fw_version
Input: exc3000 - add reset gpio support
Input: exc3000 - add EXC80H60 and EXC80H84 support
dt-bindings: touchscreen: Convert EETI EXC3000 touchscreen to json-schema
Input: sentelic - fix error return when fsp_reg_write fails
Input: alps - remove redundant assignment to variable ret
Input: ims-pcu - return error code rather than -ENOMEM
Input: elan_i2c - add ic type 0x15
Input: atmel_mxt_ts - only read messages in mxt_acquire_irq() when necessary
Input: uinput - fix typo in function name documentation
Input: ati_remote2 - add missing newlines when printing module parameters
Input: psmouse - add a newline when printing 'proto' by sysfs
Input: synaptics-rmi4 - drop a duplicated word
Input: elan_i2c - add support for high resolution reports
Input: elan_i2c - do not constantly re-query pattern ID
Input: elan_i2c - add firmware update info for ICs 0x11, 0x13, 0x14
Input: elan_i2c - handle firmware updated on newer ICs
Input: elan_i2c - add support for different firmware page sizes
Input: elan_i2c - fix detecting IAP version on older controllers
Input: elan_i2c - handle devices with patterns above 1
...
Linus Torvalds [Mon, 10 Aug 2020 23:33:54 +0000 (16:33 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid
Pull HID updates from Jiri Kosina:
- fix for some modern devices that return multi-byte battery report,
from Grant Likely
- fix for devices with Resolution Multiplier, from Peter Hutterer
- device probing speed increase, from Dmitry Torokhov
- ThinkPad 10 Ultrabook Keyboard support, from Hans de Goede
- other small assorted fixes and device ID additions
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid:
HID: quirks: add NOGET quirk for Logitech GROUP
HID: Replace HTTP links with HTTPS ones
HID: udraw-ps3: Replace HTTP links with HTTPS ones
HID: mcp2221: Replace HTTP links with HTTPS ones
HID: input: Fix devices that return multiple bytes in battery report
HID: lenovo: Fix spurious F23 key press report during resume from suspend
HID: lenovo: Add ThinkPad 10 Ultrabook Keyboard fn_lock support
HID: lenovo: Add ThinkPad 10 Ultrabook Keyboard support
HID: lenovo: Rename fn_lock sysfs attr handlers to make them generic
HID: lenovo: Factor out generic parts of the LED code
HID: lenovo: Merge tpkbd and cptkbd data structures
HID: intel-ish-hid: Replace PCI_DEV_FLAGS_NO_D3 with pci_save_state
HID: Wiimote: Treat the d-pad as an analogue stick
HID: input: do not run GET_REPORT unless there's a Resolution Multiplier
HID: usbhid: remove redundant assignment to variable retval
HID: usbhid: do not sleep when opening device
Jens Axboe [Mon, 10 Aug 2020 16:55:56 +0000 (10:55 -0600)]
io_uring: defer file table grabbing request cleanup for locked requests
If we're in the error path failing links and we have a link that has
grabbed a reference to the fs_struct, then we cannot safely drop our
reference to the table if we already hold the completion lock. This
adds a hardirq dependency to the fs_struct->lock, which it currently
doesn't have.
Defer the final cleanup and free of such requests to avoid adding this
dependency.
Jens Axboe [Mon, 10 Aug 2020 16:54:02 +0000 (10:54 -0600)]
io_uring: add missing REQ_F_COMP_LOCKED for nested requests
When we traverse into failing links or timeouts, we need to ensure we
propagate the REQ_F_COMP_LOCKED flag to ensure that we correctly signal
to the completion side that we already hold the completion lock.
Fix this by passing back the link from __io_queue_async_work(), and
then let the caller handle the queueing of the link. Take care to also
punt the submission reference put to the caller, as we're holding the
completion lock for the __io_queue_defer() case. Hence we need to mark
the io_kiocb appropriately for that case.
Jens Axboe [Fri, 7 Aug 2020 01:41:50 +0000 (19:41 -0600)]
io_uring: use TWA_SIGNAL for task_work uncondtionally
An earlier commit:
b7db41c9e03b ("io_uring: fix regression with always ignoring signals in io_cqring_wait()")
ensured that we didn't get stuck waiting for eventfd reads when it's
registered with the io_uring ring for event notification, but we still
have cases where the task can be waiting on other events in the kernel and
need a bigger nudge to make forward progress. Or the task could be in the
kernel and running, but on its way to blocking.
This means that TWA_RESUME cannot reliably be used to ensure we make
progress. Use TWA_SIGNAL unconditionally.
Jakub Kicinski [Mon, 10 Aug 2020 18:21:11 +0000 (11:21 -0700)]
bitfield.h: don't compile-time validate _val in FIELD_FIT
When ur_load_imm_any() is inlined into jeq_imm(), it's possible for the
compiler to deduce a case where _val can only have the value of -1 at
compile time. Specifically,
/* struct bpf_insn: _s32 imm */
u64 imm = insn->imm; /* sign extend */
if (imm >> 32) { /* non-zero only if insn->imm is negative */
/* inlined from ur_load_imm_any */
u32 __imm = imm >> 32; /* therefore, always 0xffffffff */
if (__builtin_constant_p(__imm) && __imm > 255)
compiletime_assert_XXX()
This can result in tripping a BUILD_BUG_ON() in __BF_FIELD_CHECK() that
checks that a given value is representable in one byte (interpreted as
unsigned).
FIELD_FIT() should return true or false at runtime for whether a value
can fit for not. Don't break the build over a value that's too large for
the mask. We'd prefer to keep the inlining and compiler optimizations
though we know this case will always return false.
Jason Baron [Mon, 10 Aug 2020 17:38:39 +0000 (13:38 -0400)]
tcp: correct read of TFO keys on big endian systems
When TFO keys are read back on big endian systems either via the global
sysctl interface or via getsockopt() using TCP_FASTOPEN_KEY, the values
don't match what was written.
Fix this by converting to the correct endianness on read. This was
reported by Colin Ian King when running the 'tcp_fastopen_backup_key' net
selftest on s390x, which depends on the read value matching what was
written. I've confirmed that the test now passes on big and little endian
systems.
Ronak Doshi [Mon, 10 Aug 2020 16:55:55 +0000 (09:55 -0700)]
vmxnet3: use correct tcp hdr length when packet is encapsulated
Commit dacce2be3312 ("vmxnet3: add geneve and vxlan tunnel offload
support") added support for encapsulation offload. However, while
calculating tcp hdr length, it does not take into account if the
packet is encapsulated or not.
This patch fixes this issue by using correct reference for inner
tcp header.
Fixes: dacce2be3312 ("vmxnet3: add geneve and vxlan tunnel offload support") Signed-off-by: Ronak Doshi <[email protected]> Acked-by: Guolin Yang <[email protected]> Signed-off-by: David S. Miller <[email protected]>
It turns out the idea to share a single pointer for both kernel and user
space address causes various kinds of problems. So use the slightly less
optimal version that uses an extra bit, but which is guaranteed to be safe
everywhere.
Fixes: 6d04fe15f78a ("net: optimize the sockptr_t for unified kernel/user address spaces") Reported-by: Eric Dumazet <[email protected]> Reported-by: John Stultz <[email protected]> Signed-off-by: Christoph Hellwig <[email protected]> Signed-off-by: David S. Miller <[email protected]>
ktest.pl: Change the logic to control the size of the log file emailed
If the log file for a given test is larger than the max size given then use
set the seek from the end of the log file instead of from the start of the
test.
Jason Baron [Thu, 16 Jul 2020 18:25:11 +0000 (14:25 -0400)]
EDAC/ie31200: Fallback if host bridge device is already initialized
The Intel uncore driver may claim some of the pci ids from ie31200 which
means that the ie31200 edac driver will not initialize them as part of
pci_register_driver().
Let's add a fallback for this case to 'pci_get_device()' to get a
reference on the device such that it can still be configured. This is
similar in approach to other edac drivers.
[CAUSE]
Commit 079ad2fb4bf9 ("kobject: Avoid premature parent object freeing in
kobject_cleanup()") changed kobject_del() that it no longer accepts NULL
pointer.
Before that commit, kobject_del() and kobject_put() all accept NULL
pointers and just ignore such NULL pointers.
But that mentioned commit needs to access the parent node, killing the
old NULL pointer behavior.
Unfortunately btrfs is relying on that hidden feature thus we will
trigger such NULL pointer dereference.
[FIX]
Instead of just saving several lines, do proper fs_info->qgroups_kobj
check before calling kobject_del() and kobject_put().
Jon Doron [Fri, 17 Jul 2020 12:52:38 +0000 (15:52 +0300)]
x86/kvm/hyper-v: Synic default SCONTROL MSR needs to be enabled
Based on an analysis of the HyperV firmwares (Gen1 and Gen2) it seems
like the SCONTROL is not being set to the ENABLED state as like we have
thought.
Also from a test done by Vitaly Kuznetsov, running a nested HyperV it
was concluded that the first access to the SCONTROL MSR with a read
resulted with the value of 0x1, aka HV_SYNIC_CONTROL_ENABLE.
It's important to note that this diverges from the value states in the
HyperV TLFS of 0.
Josef Bacik [Thu, 30 Jul 2020 15:18:09 +0000 (11:18 -0400)]
btrfs: make sure SB_I_VERSION doesn't get unset by remount
There's some inconsistency around SB_I_VERSION handling with mount and
remount. Since we don't really want it to be off ever just work around
this by making sure we don't get the flag cleared on remount.
There's a tiny cpu cost of setting the bit, otherwise all changes to
i_version also change some of the times (ctime/mtime) so the inode needs
to be synced. We wouldn't save anything by disabling it.
Filipe Manana [Wed, 29 Jul 2020 09:17:50 +0000 (10:17 +0100)]
btrfs: fix memory leaks after failure to lookup checksums during inode logging
While logging an inode, at copy_items(), if we fail to lookup the checksums
for an extent we release the destination path, free the ins_data array and
then return immediately. However a previous iteration of the for loop may
have added checksums to the ordered_sums list, in which case we leak the
memory used by them.
So fix this by making sure we iterate the ordered_sums list and free all
its checksums before returning.
Josef Bacik [Wed, 22 Jul 2020 15:12:46 +0000 (11:12 -0400)]
btrfs: don't show full path of bind mounts in subvol=
Chris Murphy reported a problem where rpm ostree will bind mount a bunch
of things for whatever voodoo it's doing. But when it does this
/proc/mounts shows something like
Despite subvolid=256 being subvol=/foo. This is because we're just
spitting out the dentry of the mount point, which in the case of bind
mounts is the source path for the mountpoint. Instead we should spit
out the path to the actual subvol. Fix this by looking up the name for
the subvolid we have mounted. With this fix the same test looks like
this
David Sterba [Thu, 23 Jul 2020 17:08:55 +0000 (19:08 +0200)]
btrfs: fix messages after changing compression level by remount
Reported by Forza on IRC that remounting with compression options does
not reflect the change in level, or at least it does not appear to do so
according to the messages:
mount -o compress=zstd:1 /dev/sda /mnt
mount -o remount,compress=zstd:15 /mnt
does not print the change to the level to syslog:
[ 41.366060] BTRFS info (device vda): use zstd compression, level 1
[ 41.368254] BTRFS info (device vda): disk space caching is enabled
[ 41.390429] BTRFS info (device vda): disk space caching is enabled
What really happens is that the message is lost but the level is actualy
changed.
There's another weird output, if compression is reset to 'no':
[ 45.413776] BTRFS info (device vda): use no compression, level 4
To fix that, save the previous compression level and print the message
in that case too and use separate message for 'no' compression.
Josef Bacik [Mon, 27 Jul 2020 14:28:05 +0000 (10:28 -0400)]
btrfs: only search for left_info if there is no right_info in try_merge_free_space
In try_to_merge_free_space we attempt to find entries to the left and
right of the entry we are adding to see if they can be merged. We
search for an entry past our current info (saved into right_info), and
then if right_info exists and it has a rb_prev() we save the rb_prev()
into left_info.
However there's a slight problem in the case that we have a right_info,
but no entry previous to that entry. At that point we will search for
an entry just before the info we're attempting to insert. This will
simply find right_info again, and assign it to left_info, making them
both the same pointer.
Now if right_info _can_ be merged with the range we're inserting, we'll
add it to the info and free right_info. However further down we'll
access left_info, which was right_info, and thus get a use-after-free.
Fix this by only searching for the left entry if we don't find a right
entry at all.
The CVE referenced had a specially crafted file system that could
trigger this use-after-free. However with the tree checker improvements
we no longer trigger the conditions for the UAF. But the original
conditions still apply, hence this fix.
Reference: CVE-2019-19448 Fixes: 963030817060 ("Btrfs: use hybrid extents+bitmap rb tree for free space") CC: [email protected] # 4.4+ Signed-off-by: Josef Bacik <[email protected]> Signed-off-by: David Sterba <[email protected]>
VDPA mlx5 accesses config space as native endian - this is
wrong since it's a modern device and actually uses LE.
It only supports modern guests so we could punt and
just force LE, but let's use the full virtio APIs since people
tend to copy/paste code, and this is not data path anyway.
Dan Carpenter [Mon, 6 Apr 2020 14:45:52 +0000 (17:45 +0300)]
vdpa: Fix pointer math bug in vdpasim_get_config()
If "offset" is non-zero then we end up copying from beyond the end of
the config because of pointer math. We can fix this by casting the
struct to a u8 pointer.
Christophe Leroy [Mon, 10 Aug 2020 08:48:22 +0000 (08:48 +0000)]
recordmcount: Fix build failure on non arm64
Commit ea0eada45632 leads to the following build failure on powerpc:
HOSTCC scripts/recordmcount
scripts/recordmcount.c: In function 'arm64_is_fake_mcount':
scripts/recordmcount.c:440: error: 'R_AARCH64_CALL26' undeclared (first use in this function)
scripts/recordmcount.c:440: error: (Each undeclared identifier is reported only once
scripts/recordmcount.c:440: error: for each function it appears in.)
make[2]: *** [scripts/recordmcount] Error 1
Kai-Heng Feng [Mon, 10 Aug 2020 13:31:06 +0000 (21:31 +0800)]
ALSA: usb-audio: Disable Lenovo P620 Rear line-in volume control
The USB device (0x17aa:0x1046) that support Lenovo P620 rear panel
line-in claim to support volume control, but it doens't seem to have an
AMP, so when line-in volume lowers below 80, nothing gets recorded
anymore.
Disable the volume control to workaround the issue.
Vaibhav Gupta [Wed, 5 Aug 2020 19:36:16 +0000 (01:06 +0530)]
i2c: eg20t: use generic power management
Drivers using legacy power management .suspen()/.resume() callbacks
have to manage PCI states and device's PM states themselves. They also
need to take care of standard configuration registers.
Switch to generic power management framework using a single
"struct dev_pm_ops" variable to take the unnecessary load from the driver.
This also avoids the need for the driver to directly call most of the PCI
helper functions and device power state control functions, as through
the generic framework PCI Core takes care of the necessary operations,
and drivers are required to do only device-specific jobs.
Vaibhav Gupta [Wed, 5 Aug 2020 19:36:15 +0000 (01:06 +0530)]
i2c: eg20t: Drop PCI wakeup calls from .suspend/.resume
The driver calls pci_enable_wake(...., false) in pch_i2c_suspend() as well
as pch_i2c_resume(). Either it should enable-wake the device in .suspend()
or should not invoke pci_enable_wake() at all.
Concluding that this driver doesn't support enable-wake and PCI core calls
pci_enable_wake(pci_dev, PCI_D0, false) during resume, drop it from
.suspend() and .resume().
Colin Ian King [Thu, 6 Aug 2020 16:08:28 +0000 (17:08 +0100)]
vdpa/mlx5: fix memory allocation failure checks
The memory allocation failure checking for in and out is currently
checking if the pointers are valid rather than the contents of what
they point to. Hence the null check on failed memory allocations is
incorrect. Fix this by adding the missing indirection in the check.
Also for the default case, just set the *in and *out to null as
these don't have any thing allocated to kfree. Finally remove the
redundant *in and *out check as these have been already done on each
allocation in the case statement.
Hector Martin [Mon, 10 Aug 2020 08:24:00 +0000 (17:24 +0900)]
ALSA: usb-audio: work around streaming quirk for MacroSilicon MS2109
Further investigation of the L-R swap problem on the MS2109 reveals that
the problem isn't that the channels are swapped, but rather that they
are swapped and also out of phase by one sample. In other words, the
issue is actually that the very first frame that comes from the hardware
is a half-frame containing only the right channel, and after that
everything becomes offset.
So introduce a new quirk field to drop the very first 2 bytes that come
in after the format is configured and a capture stream starts. This puts
the channels in phase and in the correct order.
Jiri Kosina [Mon, 10 Aug 2020 09:19:41 +0000 (11:19 +0200)]
Merge branch 'for-5.9/core-v2' into for-linus
- fix for some modern devices that return multi-byte battery report, from
Grant Likely
- fix for devices with Resolution Multiplier, from Peter Hutterer
- device probing speed increase, from Dmitry Torokhov
Jiaxun Yang [Mon, 10 Aug 2020 01:17:49 +0000 (09:17 +0800)]
MIPS: KVM: Convert a fallthrough comment to fallthrough
There is a fallthrough comment being forgotten,
GCC complains about it:
arch/mips/kvm/emulate.c: In function kvm_mips_emulate_load:
arch/mips/kvm/emulate.c:1936:21: error: this statement may fall through
1936 | vcpu->mmio_needed = 1; /* unsigned */
| ~~~~~~~~~~~~~~~~~~^~~
arch/mips/kvm/emulate.c:1939:2: note: here
1939 | case lw_op:
Hui Wang [Mon, 10 Aug 2020 02:16:59 +0000 (10:16 +0800)]
ALSA: hda - fix the micmute led status for Lenovo ThinkCentre AIO
After installing the Ubuntu Linux, the micmute led status is not
correct. Users expect that the led is on if the capture is disabled,
but with the current kernel, the led is off with the capture disabled.
We tried the old linux kernel like linux-4.15, there is no this issue.
It looks like we introduced this issue when switching to the led_cdev.
Linus Torvalds [Sun, 9 Aug 2020 21:10:26 +0000 (14:10 -0700)]
Merge tag 'kbuild-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada:
- run the checker (e.g. sparse) after the compiler
- remove unneeded cc-option tests for old compiler flags
- fix tar-pkg to install dtbs
- introduce ccflags-remove-y and asflags-remove-y syntax
- allow to trace functions in sub-directories of lib/
- introduce hostprogs-always-y and userprogs-always-y syntax
- various Makefile cleanups
* tag 'kbuild-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
kbuild: stop filtering out $(GCC_PLUGINS_CFLAGS) from cc-option base
kbuild: include scripts/Makefile.* only when relevant CONFIG is enabled
kbuild: introduce hostprogs-always-y and userprogs-always-y
kbuild: sort hostprogs before passing it to ifneq
kbuild: move host .so build rules to scripts/gcc-plugins/Makefile
kbuild: Replace HTTP links with HTTPS ones
kbuild: trace functions in subdirectories of lib/
kbuild: introduce ccflags-remove-y and asflags-remove-y
kbuild: do not export LDFLAGS_vmlinux
kbuild: always create directories of targets
powerpc/boot: add DTB to 'targets'
kbuild: buildtar: add dtbs support
kbuild: remove cc-option test of -ffreestanding
kbuild: remove cc-option test of -fno-stack-protector
Revert "kbuild: Create directory for target DTB"
kbuild: run the checker after the compiler
Linus Torvalds [Sun, 9 Aug 2020 20:58:04 +0000 (13:58 -0700)]
Merge tag 'nfsd-5.9' of git://git.linux-nfs.org/projects/cel/cel-2.6
Pull NFS server updates from Chuck Lever:
"Highlights:
- Support for user extended attributes on NFS (RFC 8276)
- Further reduce unnecessary NFSv4 delegation recalls
Notable fixes:
- Fix recent krb5p regression
- Address a few resource leaks and a rare NULL dereference
Other:
- De-duplicate RPC/RDMA error handling and other utility functions
- Replace storage and display of kernel memory addresses by tracepoints"
* tag 'nfsd-5.9' of git://git.linux-nfs.org/projects/cel/cel-2.6: (38 commits)
svcrdma: CM event handler clean up
svcrdma: Remove transport reference counting
svcrdma: Fix another Receive buffer leak
SUNRPC: Refresh the show_rqstp_flags() macro
nfsd: netns.h: delete a duplicated word
SUNRPC: Fix ("SUNRPC: Add "@len" parameter to gss_unwrap()")
nfsd: avoid a NULL dereference in __cld_pipe_upcall()
nfsd4: a client's own opens needn't prevent delegations
nfsd: Use seq_putc() in two functions
svcrdma: Display chunk completion ID when posting a rw_ctxt
svcrdma: Record send_ctxt completion ID in trace_svcrdma_post_send()
svcrdma: Introduce Send completion IDs
svcrdma: Record Receive completion ID in svc_rdma_decode_rqst
svcrdma: Introduce Receive completion IDs
svcrdma: Introduce infrastructure to support completion IDs
svcrdma: Add common XDR encoders for RDMA and Read segments
svcrdma: Add common XDR decoders for RDMA and Read segments
SUNRPC: Add helpers for decoding list discriminators symbolically
svcrdma: Remove declarations for functions long removed
svcrdma: Clean up trace_svcrdma_send_failed() tracepoint
...
Linus Torvalds [Sun, 9 Aug 2020 20:33:54 +0000 (13:33 -0700)]
Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull regset conversion fix from Al Viro:
"Fix a regression from an unnoticed bisect hazard in the regset series.
A bunch of old (aout, originally) primitives used by coredumps became
dead code after fdpic conversion to regsets. Removal of that dead code
had been the first commit in the followups to regset series;
unfortunately, it happened to hide the bisect hazard on sh (extern for
fpregs_get() had not been updated in the main series when it should
have been; followup simply made fpregs_get() static). And without that
followup commit this bisect hazard became breakage in the mainline"
Tested-by: John Paul Adrian Glaubitz <[email protected]>
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
kill unused dump_fpu() instances
Linus Torvalds [Sun, 9 Aug 2020 19:52:28 +0000 (12:52 -0700)]
Merge tag 'pinctrl-v5.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control updates from Linus Walleij:
"This is the bulk of the pin control changes for the v5.9 kernel
series:
Core changes:
- The GPIO patch "gpiolib: Introduce for_each_requested_gpio_in_range()
macro" was put in an immutable branch and merged into the pinctrl
tree as well. We see these changes also here.
- Improved debug output for pins used as GPIO.
New drivers:
- Ocelot Sparx5 SoC driver.
- Intel Emmitsburg SoC subdriver.
- Intel Tiger Lake-H SoC subdriver.
- Qualcomm PM660 SoC subdriver.
- Renesas SH-PFC R8A774E1 subdriver.
Driver improvements:
- Linear improvement and cleanups of the Intel drivers for
Cherryview, Lynxpoint, Baytrail etc. Improved locking among other
things.
- Renesas SH-PFC has added support for RPC pins, groups, and
functions to r8a77970 and r8a77980.
- The newere Freescale (now NXP) i.MX8 pin controllers have been
modularized. This is driven by the Google Android GKI initiative I
think.
- Open drain support for pins on the Qualcomm IPQ4019.
- The Ingenic driver can handle both edges IRQ detection.
- A big slew of documentation fixes all over the place.
- A few irqchip template conversions by yours truly.
* tag 'pinctrl-v5.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (107 commits)
dt-bindings: pinctrl: add bindings for MediaTek MT6779 SoC
pinctrl: stmfx: Use irqchip template
pinctrl: amd: Use irqchip template
pinctrl: mediatek: fix build for tristate changes
pinctrl: samsung: Use bank name as irqchip name
pinctrl: core: print gpio in pins debugfs file
pinctrl: mediatek: add mt6779 eint support
pinctrl: mediatek: add pinctrl support for MT6779 SoC
pinctrl: mediatek: avoid virtual gpio trying to set reg
pinctrl: mediatek: update pinmux definitions for mt6779
pinctrl: stm32: use the hwspin_lock_timeout_in_atomic() API
pinctrl: mcp23s08: Use irqchip template
pinctrl: sx150x: Use irqchip template
dt-bindings: ingenic,pinctrl: Support pinmux/pinconf nodes
pinctrl: intel: Add Intel Emmitsburg pin controller support
pinctl: ti: iodelay: Replace HTTP links with HTTPS ones
Revert "gpio: omap: handle pin config bias flags"
pinctrl: single: Use fallthrough pseudo-keyword
pinctrl: qcom: spmi-gpio: Use fallthrough pseudo-keyword
pinctrl: baytrail: Use fallthrough pseudo-keyword
...
Linus Torvalds [Sun, 9 Aug 2020 19:38:51 +0000 (12:38 -0700)]
Merge tag 'mtd/for-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux
Pull mtd updates from Miquel Raynal:
"MTD core changes:
- Spelling
- http to https updates
NAND core changes:
- Drop useless 'depends on' in Kconfig
- Add an extra level in the Kconfig hierarchy
- Trivial spellings
- Dynamic allocation of the interface configurations
- Dropping the default ONFI timing mode
- Various cleanup (types, structures, naming, comments)
- Hide the chip->data_interface indirection
- Add the generic rb-gpios property
- Add the ->choose_interface_config() hook
- Introduce nand_choose_best_sdr_timings()
- Use default values for tPROG_max and tBERS_max
- Avoid redefining tR_max and tCCS_min
- Add a helper to find the closest ONFI mode
- bcm63xx MTD parsers: simplify CFE detection
Raw NAND controller drivers changes:
- fsl-upm: Deprecation of specific DT properties
- fsl_upm: Driver rework and cleanup in favor of ->exec_op()
- Ingenic: Cleanup ARRAY_SIZE() vs sizeof() use
- brcmnand: ECC error handling on EDU transfers
- brcmnand: Don't default to EDU transfers
- qcom: Set BAM mode only if not set already
- qcom: Avoid write to unavailable register
- gpio: Driver rework in favor of ->exec_op()
- tango: ->exec_op() conversion
- mtk: ->exec_op() conversion
Raw NAND chip drivers changes:
- toshiba: Implement ->choose_interface_config() for TH58NVG2S3HBAI4,
TC58NVG0S3E, and TC58TEG5DCLTA00
- hynix: Implement ->choose_interface_config() for H27UCG8T2ATR-BC
SPI NOR core changes:
- Disable Quad Mode in spi_nor_restore().
- Don't abort BFPT parsing when QER reserved value is used.
- Add support/update capabilities for few flashes.
- Drop s70fl01gs flash: it does not support RDSR(05h) which is
critical for erase/write.
- Merge the SPIMEM DTR bits in spi-nor/next to avoid conflicts during
the release cycle.
SPI NOR controller drivers changes:
- Move the cadence-quadspi driver to spi-mem. The series was taken
through the SPI tree. Merge it also in spi-nor/next to avoid
conflicts during the release cycle.
- intel-spi:
- Add new PCI IDs.
- Ignore the Write Disable command, the controller doesn't support
it.
- Fix performance regression"
* tag 'mtd/for-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux: (79 commits)
MTD: pfow.h: drop a duplicated word
MTD: mtd-abi.h: drop a duplicated word
mtd: rawnand: omap_elm: Replace HTTP links with HTTPS ones
mtd: Replace HTTP links with HTTPS ones
mtd: hyperbus: Replace HTTP links with HTTPS ones
mtd: revert "spi-nor: intel: provide a range for poll_timout"
mtd: spi-nor: update read capabilities for w25q64 and s25fl064k
mtd: spi-nor: micron: Add SPI_NOR_DUAL_READ flag on mt25qu02g
mtd: spi-nor: macronix: Add support for mx66u2g45g
mtd: spi-nor: intel-spi: Simulate WRDI command
mtd: spi-nor: Disable the flash quad mode in spi_nor_restore()
mtd: spi-nor: Add capability to disable flash quad mode
mtd: spi-nor: spansion: Remove s70fl01gs from flash_info
mtd: spi-nor: sfdp: do not make invalid quad enable fatal
dt-bindings: mtd: fsl-upm-nand: Deprecate chip-delay and fsl, upm-wait-flags
mtd: rawnand: stm32_fmc2: get resources from parent node
mtd: rawnand: stm32_fmc2: use regmap APIs
memory: stm32-fmc2-ebi: add STM32 FMC2 EBI controller driver
dt-bindings: memory-controller: add STM32 FMC2 EBI controller documentation
dt-bindings: mtd: update STM32 FMC2 NAND controller documentation
...
Paolo Bonzini [Sun, 9 Aug 2020 17:24:02 +0000 (13:24 -0400)]
Merge tag 'kvm-ppc-next-5.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc into kvm-next-5.6
PPC KVM update for 5.9
- Improvements and bug-fixes for secure VM support, giving reduced startup
time and memory hotplug support.
- Locking fixes in nested KVM code
- Increase number of guests supported by HV KVM to 4094
- Preliminary POWER10 support
Paolo Bonzini [Sun, 9 Aug 2020 17:04:56 +0000 (13:04 -0400)]
x86: Expose SERIALIZE for supported cpuid
The SERIALIZE instruction is supported by Tntel processors, like
Sapphire Rapids. SERIALIZE is a faster serializing instruction which
does not modify registers, arithmetic flags or memory, will not cause VM
exit. It's availability is indicated by CPUID.(EAX=7,ECX=0):ECX[bit 14].
Expose it in KVM supported CPUID. This way, KVM could pass this
information to guests and they can make use of these features accordingly.
KVM: x86: Don't attempt to load PDPTRs when 64-bit mode is enabled
Don't attempt to load PDPTRs if EFER.LME=1, i.e. if 64-bit mode is
enabled. A recent change to reload the PDTPRs when CR0.CD or CR0.NW is
toggled botched the EFER.LME handling and sends KVM down the PDTPR path
when is_paging() is true, i.e. when the guest toggles CD/NW in 64-bit
mode.
Split the CR0 checks for 64-bit vs. 32-bit PAE into separate paths. The
64-bit path is specifically checking state when paging is toggled on,
i.e. CR0.PG transititions from 0->1. The PDPTR path now needs to run if
the new CR0 state has paging enabled, irrespective of whether paging was
already enabled. Trying to shave a few cycles to make the PDPTR path an
"else if" case is a mess.
Masahiro Yamada [Sat, 1 Aug 2020 12:27:18 +0000 (21:27 +0900)]
kbuild: introduce hostprogs-always-y and userprogs-always-y
To build host programs, you need to add the program names to 'hostprogs'
to use the necessary build rule, but it is not enough to build them
because there is no dependency.
There are two types of host programs: built as the prerequisite of
another (e.g. gen_crc32table in lib/Makefile), or always built when
Kbuild visits the Makefile (e.g. genksyms in scripts/genksyms/Makefile).
The latter is typical in Makefiles under scripts/, which contains host
programs globally used during the kernel build. To build them, you need
to add them to both 'hostprogs' and 'always-y'.
This commit adds hostprogs-always-y as a shorthand.
The same applies to user programs. net/bpfilter/Makefile builds
bpfilter_umh on demand, hence always-y is unneeded. In contrast,
programs under samples/ are added to both 'userprogs' and 'always-y'
so they are always built when Kbuild visits the Makefiles.
... is evaluated to true if $(hostprogs) does not contain any word but
whitespace characters.
ifneq ($(strip $(hostprogs)),)
... is a safe way to avoid interpreting whitespace as a non-empty value,
but I'd rather want to use the side-effect of $(sort ...) to do the
equivalent.
$(sort ...) is used in scripts/Makefile.host in order to drop duplication
in $(hostprogs). It is also useful to strip excessive spaces.
kbuild: move host .so build rules to scripts/gcc-plugins/Makefile
The host shared library rules are currently implemented in
scripts/Makefile.host, but actually GCC-plugin is the only user of
them. (The VDSO .so files are built for the target by different
build rules) Hence, they do not need to be treewide available.
Move all the relevant build rules to scripts/gcc-plugins/Makefile.
I also optimized the build steps so *.so is directly built from .c
because every upstream plugin is compiled from a single source file.
I am still keeping the multi-file plugin support, which Kees Cook
mentioned might be needed by out-of-tree plugins.
(https://lkml.org/lkml/2019/1/11/1107)
If the plugin, foo.so, is compiled from two files foo.c and foo2.c,
then you can do like follows:
foo-objs := foo.o foo2.o
Single-file plugins do not need the *-objs notation.
Rationale:
Reduces attack surface on kernel devs opening the links for MITM
as HTTPS traffic is much harder to manipulate.
Deterministic algorithm:
For each file:
If not .svg:
For each line:
If doesn't contain `\bxmlns\b`:
For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`:
If both the HTTP and HTTPS versions
return 200 OK and serve the same content:
Replace HTTP with HTTPS.
exists here in sub-directories of lib/ to keep the behavior of
commit 2464a609ded0 ("ftrace: do not trace library functions").
Since that commit, not only the objects in lib/ but also the ones in
the sub-directories are excluded from ftrace (although the commit
description did not explicitly mention this).
However, most of library functions in sub-directories are not so hot.
Re-add them to ftrace.
Going forward, only the objects right under lib/ will be excluded.
kbuild: introduce ccflags-remove-y and asflags-remove-y
CFLAGS_REMOVE_<file>.o filters out flags when compiling a particular
object, but there is no convenient way to do that for every object in
a directory.
Add ccflags-remove-y and asflags-remove-y to make it easily.
Use ccflags-remove-y to clean up some Makefiles.
The add/remove order works as follows:
[1] KBUILD_CFLAGS specifies compiler flags used globally
[2] ccflags-y adds compiler flags for all objects in the
current Makefile
[3] ccflags-remove-y removes compiler flags for all objects in the
current Makefile (New feature)
[4] CFLAGS_<file> adds compiler flags per file.
[5] CFLAGS_REMOVE_<file> removes compiler flags per file.
Having [3] before [4] allows us to remove flags from most (but not all)
objects in the current Makefile.
For example, kernel/trace/Makefile removes $(CC_FLAGS_FTRACE)
from all objects in the directory, then adds it back to
trace_selftest_dynamic.o and CFLAGS_trace_kprobe_selftest.o
The same applies to lib/livepatch/Makefile.
Please note ccflags-remove-y has no effect to the sub-directories.
In contrast, the previous notation got rid of compiler flags also from
all the sub-directories.
The following are not affected because they have no sub-directories:
To keep the behavior, I added ccflags-remove-y to all Makefiles
in subdirectories of lib/, except the following:
lib/vdso/Makefile - Kbuild does not descend into this Makefile
lib/raid/test/Makefile - This is not used for the kernel build
I think commit 2464a609ded0 ("ftrace: do not trace library functions")
excluded too much. In the next commit, I will remove ccflags-remove-y
from the sub-directories of lib/.
Even if you rerun the same command, the error message will not be
shown despite vmlinux is already gone.
To reproduce it, the parallel option -j is needed. Single thread
cleaning always executes 'archclean', 'vmlinuxclean' in this order,
so vmlinux still exists when arch/arm/boot/compressed/ is cleaned.
Looking at arch/arm/boot/compressed/Makefile does not help understand
the reason of the error message. Both KBSS_SZ and LDFLAGS_vmlinux are
assigned with '=' operator, hence, they are not expanded unless used.
Obviously, 'make clean' does not use them.
In fact, the root cause exists in the top Makefile:
export LDFLAGS_vmlinux
Since LDFLAGS_vmlinux is an exported variable, LDFLAGS_vmlinux in
arch/arm/boot/compressed/Makefile is expanded when scripts/Makefile.clean
has a command to execute. This is why the error message shows up only
when there exist build artifacts in arch/arm/boot/compressed/.
Adding 'unexport LDFLAGS_vmlinux' to arch/arm/boot/compressed/Makefile
will fix it as far as ARCH=arm is concerned, but I think the proper fix
is to get rid of 'export LDFLAGS_vmlinux' from the top Makefile.
LDFLAGS_vmlinux in the top Makefile contains linker flags for the top
vmlinux. LDFLAGS_vmlinux in arch/arm/boot/compressed/Makefile is for
arch/arm/boot/compressed/vmlinux. They just happen to have the same
variable name, but are used for different purposes. Stop shadowing
LDFLAGS_vmlinux.
This commit passes LDFLAGS_vmlinux to scripts/link-vmlinux.sh via a
command line parameter instead of via an environment variable. LD and
KBUILD_LDFLAGS are exported, but I did the same for consistency. Anyway,
they must be included in cmd_link-vmlinux to allow if_changed to detect
the changes in LD or KBUILD_LDFLAGS.
They use ':=' or '=' to clear the LDFLAGS_vmlinux inherited from the
top Makefile.
We need to take a closer look at the impact to unicore32 and xtensa.
arch/unicore32/boot/compressed/Makefile only uses '+=' operator for
LDFLAGS_vmlinux. So, the decompressor previously inherited the linker
flags from the top Makefile.
However, commit 70fac51feaf2 ("unicore32 additional architecture files:
boot process") was merged before commit 1f2bfbd00e46 ("kbuild: link of
vmlinux moved to a script"). So, I rather consider this is a bug fix of 1f2bfbd00e46.
arch/xtensa/boot/boot-elf/Makefile is also affected, but this is also
considered a fix for the same reason. It did not inherit LDFLAGS_vmlinux
when commit 4bedea945451 ("[PATCH] xtensa: Architecture support for
Tensilica Xtensa Part 2") was merged. I deleted $(LDFLAGS_vmlinux),
which is now empty.
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