This NULL check is reversed so it leads to a Smatch warning and
presumably a NULL dereference.
kernel/events/core.c:1598 perf_event_groups_less()
error: we previously assumed 'right->cgrp->css.cgroup' could be null
(see line 1590)
Fixes: 95ed6c707f ("perf/cgroup: Order events in RB tree by cgroup id")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20200312105637.GA8960@mwanda
Kan and Andi reported that we fail to kill rotation when the flexible
events go empty, but the context does not. XXX moar
Fixes: fd7d55172d ("perf/cgroups: Don't rotate events for cgroups unnecessarily")
Reported-by: Andi Kleen <ak@linux.intel.com>
Reported-by: Kan Liang <kan.liang@linux.intel.com>
Tested-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20200305123851.GX2596@hirez.programming.kicks-ass.net
While looking at an objtool UACCESS warning, it suddenly occurred to me
that it is entirely possible to have an OPTPROBE right in the middle of
an UACCESS region.
In this case we must of course clear FLAGS.AC while running the KPROBE.
Luckily the trampoline already saves/restores [ER]FLAGS, so all we need
to do is inject a CLAC. Unfortunately we cannot use ALTERNATIVE() in the
trampoline text, so we have to frob that manually.
Fixes: ca0bbc70f147 ("sched/x86_64: Don't save flags on context switch")
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Link: https://lkml.kernel.org/r/20200305092130.GU2596@hirez.programming.kicks-ass.net
perf record:
Alexey Budankov:
- Fix binding of AIO user space buffers to nodes
maps:
Dominik b. Czarnota:
- Fix off by one in strncpy() size argument.
Arnaldo Carvalho de Melo:
- Use strstarts() to look for Android libraries.
Ian Rogers:
- Give synthetic mmap events an inode generation.
man pages:
Ian Rogers:
- Set man page date to last git commit.
perf test:
Ian Rogers:
- Print if shell directory isn't present.
perf report:
Jin Yao:
- Fix no branch type statistics report issue.
perf expr:
Jiri Olsa:
- Fix copy/paste mistake
vendor events:
Kan Liang:
- Support metric constraints.
vendor events intel:
Kan Liang:
- Add NO_NMI_WATCHDOG metric constraint.
vendor events s390:
Thomas Richter:
- Add new deflate counters for IBM z15.
ARM cs-etm:
Leo Yan:
- Last branch improvements.
intel-pt:
Adrian Hunter:
- Update intel-pt.txt file with new location of the documentation.
- Add Intel PT man page references.
- Rename intel-pt.txt and put it in man page format.
perl scripting:
Michael Petlan:
- Add common_callchain to fix argument order.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-core-for-mingo-5.7-20200317' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
perf record:
Alexey Budankov:
- Fix binding of AIO user space buffers to nodes
maps:
Dominik b. Czarnota:
- Fix off by one in strncpy() size argument.
Arnaldo Carvalho de Melo:
- Use strstarts() to look for Android libraries.
Ian Rogers:
- Give synthetic mmap events an inode generation.
man pages:
Ian Rogers:
- Set man page date to last git commit.
perf test:
Ian Rogers:
- Print if shell directory isn't present.
perf report:
Jin Yao:
- Fix no branch type statistics report issue.
perf expr:
Jiri Olsa:
- Fix copy/paste mistake
vendor events:
Kan Liang:
- Support metric constraints.
vendor events intel:
Kan Liang:
- Add NO_NMI_WATCHDOG metric constraint.
vendor events s390:
Thomas Richter:
- Add new deflate counters for IBM z15.
ARM cs-etm:
Leo Yan:
- Last branch improvements.
intel-pt:
Adrian Hunter:
- Update intel-pt.txt file with new location of the documentation.
- Add Intel PT man page references.
- Rename intel-pt.txt and put it in man page format.
perl scripting:
Michael Petlan:
- Add common_callchain to fix argument order.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Conflicts:
tools/perf/util/map.c
perf stat:
Jin Yao:
- Show percore counts in per CPU output.
perf report:
Jin Yao:
- Allow selecting which block info columns to report and its order.
- Support color ops to print block percents in color.
- Fix wrong block address comparison in block_info__cmp().
perf annotate:
Ravi Bangoria:
- Get rid of annotation->nr_jumps, unused.
expr:
Jiri Olsa:
- Move expr lexer to flex.
llvm:
Arnaldo Carvalho de Melo:
- Add debug hint message about missing kernel-devel package.
core:
Kan Liang:
- Initial patches to support the recently added PERF_SAMPLE_BRANCH_HW_INDEX
kernel feature.
- Add check for unexpected use of reserved membrs in event attr, so that in
the future older perf tools will complain instead of silently try to process
unknown features.
libapi:
Namhyung Kim:
- Adopt cgroupsfs_find_mountpoint() from tools/perf/util/.
libperf:
Michael Petlan:
- Add counting example.
libtraceevent:
Steven Rostedt (VMware):
- Remove extra '\n' in print_event_time().
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-core-for-mingo-5.7-20200310' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
perf stat:
Jin Yao:
- Show percore counts in per CPU output.
perf report:
Jin Yao:
- Allow selecting which block info columns to report and its order.
- Support color ops to print block percents in color.
- Fix wrong block address comparison in block_info__cmp().
perf annotate:
Ravi Bangoria:
- Get rid of annotation->nr_jumps, unused.
expr:
Jiri Olsa:
- Move expr lexer to flex.
llvm:
Arnaldo Carvalho de Melo:
- Add debug hint message about missing kernel-devel package.
core:
Kan Liang:
- Initial patches to support the recently added PERF_SAMPLE_BRANCH_HW_INDEX
kernel feature.
- Add check for unexpected use of reserved membrs in event attr, so that in
the future older perf tools will complain instead of silently try to process
unknown features.
libapi:
Namhyung Kim:
- Adopt cgroupsfs_find_mountpoint() from tools/perf/util/.
libperf:
Michael Petlan:
- Add counting example.
libtraceevent:
Steven Rostedt (VMware):
- Remove extra '\n' in print_event_time().
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
perf probe:
Masami Hiramatsu:
- Fix deletion of multiple probe events.
- Fix userspace libraries handling by not depending on dwfl_module_addrsym().
Event parsing:
Ian Rogers:
- Fix reading of invalid memory in event parsing.
python binding:
Ilie Halip:
- Fix clang detection when using CC=clang-version.
build:
Masami Hiramatsu:
- Fix O= use with relative paths.
Android:
Dominik b. Czarnota:
- Fix off by one in strncpy() size argument when handling Android
libraries.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-urgent-for-mingo-5.6-20200309' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent
Pull perf/urgent fixes from Arnaldo Carvalho de Melo:
perf probe:
Masami Hiramatsu:
- Fix deletion of multiple probe events.
- Fix userspace libraries handling by not depending on dwfl_module_addrsym().
Event parsing:
Ian Rogers:
- Fix reading of invalid memory in event parsing.
python binding:
Ilie Halip:
- Fix clang detection when using CC=clang-version.
build:
Masami Hiramatsu:
- Fix O= use with relative paths.
Android:
Dominik b. Czarnota:
- Fix off by one in strncpy() size argument when handling Android
libraries.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Previously we could get the report of branch type statistics.
For example:
# perf record -j any,save_type ...
# t perf report --stdio
#
# Branch Statistics:
#
COND_FWD: 40.6%
COND_BWD: 4.1%
CROSS_4K: 24.7%
CROSS_2M: 12.3%
COND: 44.7%
UNCOND: 0.0%
IND: 6.1%
CALL: 24.5%
RET: 24.7%
But now for the recent perf, it can't report the branch type statistics.
It's a regression issue caused by commit 40c39e3046 ("perf report: Fix
a no annotate browser displayed issue"), which only counts the branch
type statistics for browser mode.
This patch moves the branch_type_count() outside of ui__has_annotation()
checking, then branch type statistics can work for stdio mode.
Fixes: 40c39e3046 ("perf report: Fix a no annotate browser displayed issue")
Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20200313134607.12873-1-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
When mmap2 events are synthesized the ino_generation field isn't being
set leading to uninitialized memory being compared.
Caught with clang's -fsanitize=memory:
==124733==WARNING: MemorySanitizer: use-of-uninitialized-value
#0 0x55a96a6a65cc in __dso_id__cmp tools/perf/util/dsos.c:23:6
#1 0x55a96a6a81d5 in dso_id__cmp tools/perf/util/dsos.c:38:9
#2 0x55a96a6a717f in __dso__cmp_long_name tools/perf/util/dsos.c:74:15
#3 0x55a96a6a6c4c in __dsos__findnew_link_by_longname_id tools/perf/util/dsos.c:106:12
#4 0x55a96a6a851e in __dsos__findnew_by_longname_id tools/perf/util/dsos.c:178:9
#5 0x55a96a6a7798 in __dsos__find_id tools/perf/util/dsos.c:191:9
#6 0x55a96a6a7b57 in __dsos__findnew_id tools/perf/util/dsos.c:251:20
#7 0x55a96a6a7a57 in dsos__findnew_id tools/perf/util/dsos.c:259:17
#8 0x55a96a7776ae in machine__findnew_dso_id tools/perf/util/machine.c:2709:9
#9 0x55a96a77dfcf in map__new tools/perf/util/map.c:193:10
#10 0x55a96a77240a in machine__process_mmap2_event tools/perf/util/machine.c:1670:8
#11 0x55a96a7741a3 in machine__process_event tools/perf/util/machine.c:1882:9
#12 0x55a96a6aee39 in perf_event__process tools/perf/util/event.c:454:9
#13 0x55a96a87d633 in perf_tool__process_synth_event tools/perf/util/synthetic-events.c:63:9
#14 0x55a96a87f131 in perf_event__synthesize_mmap_events tools/perf/util/synthetic-events.c:403:7
#15 0x55a96a8815d6 in __event__synthesize_thread tools/perf/util/synthetic-events.c:548:9
#16 0x55a96a882bff in __perf_event__synthesize_threads tools/perf/util/synthetic-events.c:681:3
#17 0x55a96a881ec2 in perf_event__synthesize_threads tools/perf/util/synthetic-events.c:750:9
#18 0x55a96a562b26 in synth_all tools/perf/tests/mmap-thread-lookup.c:136:9
#19 0x55a96a5623b1 in mmap_events tools/perf/tests/mmap-thread-lookup.c:174:8
#20 0x55a96a561fa0 in test__mmap_thread_lookup tools/perf/tests/mmap-thread-lookup.c:230:2
#21 0x55a96a52c182 in run_test tools/perf/tests/builtin-test.c:378:9
#22 0x55a96a52afc1 in test_and_print tools/perf/tests/builtin-test.c:408:9
#23 0x55a96a52966e in __cmd_test tools/perf/tests/builtin-test.c:603:4
#24 0x55a96a52855d in cmd_test tools/perf/tests/builtin-test.c:747:9
#25 0x55a96a2844d4 in run_builtin tools/perf/perf.c:312:11
#26 0x55a96a282bd0 in handle_internal_command tools/perf/perf.c:364:8
#27 0x55a96a284097 in run_argv tools/perf/perf.c:408:2
#28 0x55a96a282223 in main tools/perf/perf.c:538:3
Uninitialized value was stored to memory at
#1 0x55a96a6a18f7 in dso__new_id tools/perf/util/dso.c:1230:14
#2 0x55a96a6a78ee in __dsos__addnew_id tools/perf/util/dsos.c:233:20
#3 0x55a96a6a7bcc in __dsos__findnew_id tools/perf/util/dsos.c:252:21
#4 0x55a96a6a7a57 in dsos__findnew_id tools/perf/util/dsos.c:259:17
#5 0x55a96a7776ae in machine__findnew_dso_id tools/perf/util/machine.c:2709:9
#6 0x55a96a77dfcf in map__new tools/perf/util/map.c:193:10
#7 0x55a96a77240a in machine__process_mmap2_event tools/perf/util/machine.c:1670:8
#8 0x55a96a7741a3 in machine__process_event tools/perf/util/machine.c:1882:9
#9 0x55a96a6aee39 in perf_event__process tools/perf/util/event.c:454:9
#10 0x55a96a87d633 in perf_tool__process_synth_event tools/perf/util/synthetic-events.c:63:9
#11 0x55a96a87f131 in perf_event__synthesize_mmap_events tools/perf/util/synthetic-events.c:403:7
#12 0x55a96a8815d6 in __event__synthesize_thread tools/perf/util/synthetic-events.c:548:9
#13 0x55a96a882bff in __perf_event__synthesize_threads tools/perf/util/synthetic-events.c:681:3
#14 0x55a96a881ec2 in perf_event__synthesize_threads tools/perf/util/synthetic-events.c:750:9
#15 0x55a96a562b26 in synth_all tools/perf/tests/mmap-thread-lookup.c:136:9
#16 0x55a96a5623b1 in mmap_events tools/perf/tests/mmap-thread-lookup.c:174:8
#17 0x55a96a561fa0 in test__mmap_thread_lookup tools/perf/tests/mmap-thread-lookup.c:230:2
#18 0x55a96a52c182 in run_test tools/perf/tests/builtin-test.c:378:9
#19 0x55a96a52afc1 in test_and_print tools/perf/tests/builtin-test.c:408:9
Uninitialized value was stored to memory at
#0 0x55a96a7725af in machine__process_mmap2_event tools/perf/util/machine.c:1646:25
#1 0x55a96a7741a3 in machine__process_event tools/perf/util/machine.c:1882:9
#2 0x55a96a6aee39 in perf_event__process tools/perf/util/event.c:454:9
#3 0x55a96a87d633 in perf_tool__process_synth_event tools/perf/util/synthetic-events.c:63:9
#4 0x55a96a87f131 in perf_event__synthesize_mmap_events tools/perf/util/synthetic-events.c:403:7
#5 0x55a96a8815d6 in __event__synthesize_thread tools/perf/util/synthetic-events.c:548:9
#6 0x55a96a882bff in __perf_event__synthesize_threads tools/perf/util/synthetic-events.c:681:3
#7 0x55a96a881ec2 in perf_event__synthesize_threads tools/perf/util/synthetic-events.c:750:9
#8 0x55a96a562b26 in synth_all tools/perf/tests/mmap-thread-lookup.c:136:9
#9 0x55a96a5623b1 in mmap_events tools/perf/tests/mmap-thread-lookup.c:174:8
#10 0x55a96a561fa0 in test__mmap_thread_lookup tools/perf/tests/mmap-thread-lookup.c:230:2
#11 0x55a96a52c182 in run_test tools/perf/tests/builtin-test.c:378:9
#12 0x55a96a52afc1 in test_and_print tools/perf/tests/builtin-test.c:408:9
#13 0x55a96a52966e in __cmd_test tools/perf/tests/builtin-test.c:603:4
#14 0x55a96a52855d in cmd_test tools/perf/tests/builtin-test.c:747:9
#15 0x55a96a2844d4 in run_builtin tools/perf/perf.c:312:11
#16 0x55a96a282bd0 in handle_internal_command tools/perf/perf.c:364:8
#17 0x55a96a284097 in run_argv tools/perf/perf.c:408:2
#18 0x55a96a282223 in main tools/perf/perf.c:538:3
Uninitialized value was created by a heap allocation
#0 0x55a96a22f60d in malloc llvm/llvm-project/compiler-rt/lib/msan/msan_interceptors.cpp:925:3
#1 0x55a96a882948 in __perf_event__synthesize_threads tools/perf/util/synthetic-events.c:655:15
#2 0x55a96a881ec2 in perf_event__synthesize_threads tools/perf/util/synthetic-events.c:750:9
#3 0x55a96a562b26 in synth_all tools/perf/tests/mmap-thread-lookup.c:136:9
#4 0x55a96a5623b1 in mmap_events tools/perf/tests/mmap-thread-lookup.c:174:8
#5 0x55a96a561fa0 in test__mmap_thread_lookup tools/perf/tests/mmap-thread-lookup.c:230:2
#6 0x55a96a52c182 in run_test tools/perf/tests/builtin-test.c:378:9
#7 0x55a96a52afc1 in test_and_print tools/perf/tests/builtin-test.c:408:9
#8 0x55a96a52966e in __cmd_test tools/perf/tests/builtin-test.c:603:4
#9 0x55a96a52855d in cmd_test tools/perf/tests/builtin-test.c:747:9
#10 0x55a96a2844d4 in run_builtin tools/perf/perf.c:312:11
#11 0x55a96a282bd0 in handle_internal_command tools/perf/perf.c:364:8
#12 0x55a96a284097 in run_argv tools/perf/perf.c:408:2
#13 0x55a96a282223 in main tools/perf/perf.c:538:3
SUMMARY: MemorySanitizer: use-of-uninitialized-value tools/perf/util/dsos.c:23:6 in __dso_id__cmp
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: clang-built-linux@googlegroups.com
Link: http://lore.kernel.org/lkml/20200313053129.131264-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Pull HID fixes from Jiri Kosina:
- string buffer formatting fixes in picolcd and sensor drivers, from
Takashi Iwai
- two new device IDs from Chen-Tsung Hsieh and Tony Fischetti
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid:
HID: add ALWAYS_POLL quirk to lenovo pixart mouse
HID: google: add moonball USB id
HID: hid-sensor-custom: Use scnprintf() for avoiding potential buffer overflow
HID: hid-picolcd_fb: Use scnprintf() for avoiding potential buffer overflow
Family 19h introduces change in slice, core and thread specification in
its L3 Performance Event Select (ChL3PmcCfg) h/w register. The change is
incompatible with Family 17h's version of the register.
Introduce a new path in l3_thread_slice_mask() to do things differently
for Family 19h vs. Family 17h, otherwise the new hardware doesn't get
programmed correctly.
Instead of a linear core--thread bitmask, Family 19h takes an encoded
core number, and a separate thread mask. There are new bits that are set
for all cores and all slices, of which only the latter is used, since
the driver counts events for all slices on behalf of the specified CPU.
Also update amd_uncore_init() to base its L2/NB vs. L3/Data Fabric mode
decision based on Family 17h or above, not just 17h and 18h: the Family
19h Data Fabric PMC is compatible with the Family 17h DF PMC.
[ bp: Touchups. ]
Signed-off-by: Kim Phillips <kim.phillips@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20200313231024.17601-3-kim.phillips@amd.com
Convert the l3_thread_slice_mask() function to use the more readable
topology_* helper functions, more intuitive variable names like shift
and thread_mask, and BIT_ULL().
No functional changes.
Signed-off-by: Kim Phillips <kim.phillips@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20200313231024.17601-2-kim.phillips@amd.com
In order to better accommodate the upcoming Family 19h, given
the 80-char line limit, move the existing code into a new
l3_thread_slice_mask() function.
No functional changes.
[ bp: Touchups. ]
Signed-off-by: Kim Phillips <kim.phillips@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20200313231024.17601-1-kim.phillips@amd.com
A lenovo pixart mouse (17ef:608d) is afflicted common the the malfunction
where it disconnects and reconnects every minute--each time incrementing
the device number. This patch adds the device id of the device and
specifies that it needs the HID_QUIRK_ALWAYS_POLL quirk in order to
work properly.
Signed-off-by: Tony Fischetti <tony.fischetti@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
to GIC registers which miss in the implementation.
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Merge tag 'irq-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fix from Thomas Gleixner:
"A single commit to handle an erratum in Cavium ThunderX to prevent
access to GIC registers which are broken in the implementation"
* tag 'irq-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/gic-v3: Workaround Cavium erratum 38539 when reading GICD_TYPER2
prevent inodes from vanishing, but ihold() does not guarantee inode
persistence. Replace the inode pointer with a per boot, machine wide,
unique inode identifier. The second commit fixes the breakage of the hash
mechanism whihc causes a 100% performance regression.
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Merge tag 'locking-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull futex fix from Thomas Gleixner:
"Fix for yet another subtle futex issue.
The futex code used ihold() to prevent inodes from vanishing, but
ihold() does not guarantee inode persistence. Replace the inode
pointer with a per boot, machine wide, unique inode identifier.
The second commit fixes the breakage of the hash mechanism which
causes a 100% performance regression"
* tag 'locking-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
futex: Unbreak futex hashing
futex: Fix inode life-time issue
- Map EFI runtime service data as encrypted when SEV is enabled otherwise
e.g. SMBIOS data cannot be properly decoded by dmidecode.
- Remove the warning in the vector management code which triggered when a
managed interrupt affinity changed outside of a CPU hotplug
operation. The warning was correct until the recent core code change
that introduced a CPU isolation feature which needs to migrate managed
interrupts away from online CPUs under certain conditions to achieve the
isolation.
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Merge tag 'x86-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
"Two fixes for x86:
- Map EFI runtime service data as encrypted when SEV is enabled.
Otherwise e.g. SMBIOS data cannot be properly decoded by dmidecode.
- Remove the warning in the vector management code which triggered
when a managed interrupt affinity changed outside of a CPU hotplug
operation.
The warning was correct until the recent core code change that
introduced a CPU isolation feature which needs to migrate managed
interrupts away from online CPUs under certain conditions to
achieve the isolation"
* tag 'x86-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/vector: Remove warning on managed interrupt migration
x86/ioremap: Map EFI runtime services data as encrypted for SEV
- AMD uncore driver:
Replace the open coded sanity check with the core variant, which
provides the correct error code and also leaves a hint in dmesg
- tools:
- Fix the stdio input handling with glibc versions >= 2.28
- Unbreak the futex-wake benchmark which was reduced to 0 test threads
due to the conversion to cpumaps
- Initialize sigaction structs before invoking sys_sigactio()
- Plug the mapfile memory leak in perf jevents
- Fix off by one relative directory includes
- Fix an undefined string comparison in perf diff
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Merge tag 'perf-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Thomas Gleixner:
"A pile of perf fixes:
Kernel side:
- AMD uncore driver: Replace the open coded sanity check with the
core variant, which provides the correct error code and also leaves
a hint in dmesg
Tooling:
- Fix the stdio input handling with glibc versions >= 2.28
- Unbreak the futex-wake benchmark which was reduced to 0 test
threads due to the conversion to cpumaps
- Initialize sigaction structs before invoking sys_sigactio()
- Plug the mapfile memory leak in perf jevents
- Fix off by one relative directory includes
- Fix an undefined string comparison in perf diff"
* tag 'perf-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/amd/uncore: Replace manual sampling check with CAP_NO_INTERRUPT flag
tools: Fix off-by 1 relative directory includes
perf jevents: Fix leak of mapfile memory
perf bench: Clear struct sigaction before sigaction() syscall
perf bench futex-wake: Restore thread count default to online CPU count
perf top: Fix stdio interface input handling with glibc 2.28+
perf diff: Fix undefined string comparision spotted by clang's -Wstring-compare
perf symbols: Don't try to find a vmlinux file when looking for kernel modules
perf bench: Share some global variables to fix build with gcc 10
perf parse-events: Use asprintf() instead of strncpy() to read tracepoint files
perf env: Do not return pointers to local variables
perf tests bp_account: Make global variable static
which caused sys/sysinfo to be inconsistent with /proc/uptime when read
from a task inside a time namespace.
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Merge tag 'timers-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fix from Thomas Gleixner:
"A single fix adding the missing time namespace adjustment in
sys/sysinfo which caused sys/sysinfo to be inconsistent with
/proc/uptime when read from a task inside a time namespace"
* tag 'timers-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sys/sysinfo: Respect boottime inside time namespace
- Shut down the per CPU thermal throttling poll work properly when a CPU
goes offline. The missing shutdown caused the poll work to be migrated
to a unbound worker which triggered warnings about the usage of
smp_processor_id() in preemptible context
- Fix the PPIN feature initialization which missed to enable the
functionality when PPIN_CTL was enabled but the MSR locked against
updates.
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Merge tag 'ras-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RAS fixes from Thomas Gleixner:
"Two RAS related fixes:
- Shut down the per CPU thermal throttling poll work properly when a
CPU goes offline.
The missing shutdown caused the poll work to be migrated to a
unbound worker which triggered warnings about the usage of
smp_processor_id() in preemptible context
- Fix the PPIN feature initialization which missed to enable the
functionality when PPIN_CTL was enabled but the MSR locked against
updates"
* tag 'ras-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mce: Fix logic and comments around MSR_PPIN_CTL
x86/mce/therm_throt: Undo thermal polling properly on CPU offline
- Prevent a race and buffer overflow in the sysfs efivars interface which
causes kernel memory corruption.
- Add the missing NULL pointer checks in efivar_store_raw()
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Merge tag 'efi-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI fixes from Thomas Gleixner:
"Two EFI fixes:
- Prevent a race and buffer overflow in the sysfs efivars interface
which causes kernel memory corruption.
- Add the missing NULL pointer checks in efivar_store_raw()"
* tag 'efi-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
efi: Add a sanity check to efivar_store_raw()
efi: Fix a race and a buffer overflow while reading efivars via sysfs
Including:
- Mostly Intel VT-d fixes:
- RCU list handling fixes
- Replace WARN_TAINT with pr_warn + add_taint for reporting
firmware issues
- DebugFS fixes
- Fix for hugepage handling in iova_to_phys implementation
- Fix for handling VMD devices, which have a domain number
which doesn't fit into 16 bits
- Warning message fix
- MSI allocation fix for iommu-dma code
- Sign-extension fix for io page-table code
- Fix for AMD-Vi to properly update the is-running bit when
AVIC is used
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Merge tag 'iommu-fixes-v5.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull IOMMU fixes from Joerg Roedel:
- Intel VT-d fixes:
- RCU list handling fixes
- Replace WARN_TAINT with pr_warn + add_taint for reporting firmware
issues
- DebugFS fixes
- Fix for hugepage handling in iova_to_phys implementation
- Fix for handling VMD devices, which have a domain number which
doesn't fit into 16 bits
- Warning message fix
- MSI allocation fix for iommu-dma code
- Sign-extension fix for io page-table code
- Fix for AMD-Vi to properly update the is-running bit when AVIC is
used
* tag 'iommu-fixes-v5.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/vt-d: Populate debugfs if IOMMUs are detected
iommu/amd: Fix IOMMU AVIC not properly update the is_run bit in IRTE
iommu/vt-d: Ignore devices with out-of-spec domain number
iommu/vt-d: Fix the wrong printing in RHSA parsing
iommu/vt-d: Fix debugfs register reads
iommu/vt-d: quirk_ioat_snb_local_iommu: replace WARN_TAINT with pr_warn + add_taint
iommu/vt-d: dmar_parse_one_rmrr: replace WARN_TAINT with pr_warn + add_taint
iommu/vt-d: dmar: replace WARN_TAINT with pr_warn + add_taint
iommu/vt-d: Silence RCU-list debugging warnings
iommu/vt-d: Fix RCU-list bugs in intel_iommu_init()
iommu/dma: Fix MSI reservation allocation
iommu/io-pgtable-arm: Fix IOVA validation for 32-bit
iommu/vt-d: Fix a bug in intel_iommu_iova_to_phys() for huge page
iommu/vt-d: Fix RCU list debugging warnings
Pull i2c fixes from Wolfram Sang:
"I2C has quite some regression fixes this time.
One is also related to watchdogs, we have proper acks from Guenter for
them"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: acpi: put device when verifying client fails
misc: eeprom: at24: fix regulator underflow
i2c: gpio: suppress error on probe defer
macintosh: windfarm: fix MODINFO regression
i2c: designware-pci: Fix BUG_ON during device removal
i2c: i801: Do not add ICH_RES_IO_SMI for the iTCO_wdt device
watchdog: iTCO_wdt: Make ICH_RES_IO_SMI optional
watchdog: iTCO_wdt: Export vendorsupport
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"Bugfixes for x86 and s390"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: nVMX: avoid NULL pointer dereference with incorrect EVMCS GPAs
KVM: x86: Initializing all kvm_lapic_irq fields in ioapic_write_indirect
KVM: VMX: Condition ENCLS-exiting enabling on CPU support for SGX1
KVM: s390: Also reset registers in sync regs for initial cpu reset
KVM: fix Kconfig menu text for -Werror
KVM: x86: remove stale comment from struct x86_emulate_ctxt
KVM: x86: clear stale x86_emulate_ctxt->intercept value
KVM: SVM: Fix the svm vmexit code for WRMSR
KVM: X86: Fix dereference null cpufreq policy
Currently, the intel iommu debugfs directory(/sys/kernel/debug/iommu/intel)
gets populated only when DMA remapping is enabled (dmar_disabled = 0)
irrespective of whether interrupt remapping is enabled or not.
Instead, populate the intel iommu debugfs directory if any IOMMUs are
detected.
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: ee2636b867 ("iommu/vt-d: Enable base Intel IOMMU debugfs support")
Signed-off-by: Megha Dey <megha.dey@linux.intel.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
more fixes for this -rc series.
- Mark device node const in of_clk_get_parent APIs to ease landing
changes in users later
- Fix flag for Qualcomm SC7180 video clocks where we thought it would
never turn off but actually hardware takes care of it
- Remove disp_cc_mdss_rscc_ahb_clk on Qualcomm SC7180 SoCs because this
clk is always on anyway
- Correct some bad dt-binding numbers for i.MX8MN SoCs
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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk fixes from Stephen Boyd:
"A small collection of fixes. I'll make another sweep soon to look for
more fixes for this -rc series.
- Mark device node const in of_clk_get_parent APIs to ease landing
changes in users later
- Fix flag for Qualcomm SC7180 video clocks where we thought it would
never turn off but actually hardware takes care of it
- Remove disp_cc_mdss_rscc_ahb_clk on Qualcomm SC7180 SoCs because
this clk is always on anyway
- Correct some bad dt-binding numbers for i.MX8MN SoCs"
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: imx8mn: Fix incorrect clock defines
clk: qcom: dispcc: Remove support of disp_cc_mdss_rscc_ahb_clk
clk: qcom: videocc: Update the clock flag for video_cc_vcodec0_core_clk
of: clk: Make of_clk_get_parent_{count,name}() parameter const
When an EVMCS enabled L1 guest on KVM will tries doing enlightened VMEnter
with EVMCS GPA = 0 the host crashes because the
evmcs_gpa != vmx->nested.hv_evmcs_vmptr
condition in nested_vmx_handle_enlightened_vmptrld() will evaluate to
false (as nested.hv_evmcs_vmptr is zeroed after init). The crash will
happen on vmx->nested.hv_evmcs pointer dereference.
Another problematic EVMCS ptr value is '-1' but it only causes host crash
after nested_release_evmcs() invocation. The problem is exactly the same as
with '0', we mistakenly think that the EVMCS pointer hasn't changed and
thus nested.hv_evmcs_vmptr is valid.
Resolve the issue by adding an additional !vmx->nested.hv_evmcs
check to nested_vmx_handle_enlightened_vmptrld(), this way we will
always be trying kvm_vcpu_map() when nested.hv_evmcs is NULL
and this is supposed to catch all invalid EVMCS GPAs.
Also, initialize hv_evmcs_vmptr to '0' in nested_release_evmcs()
to be consistent with initialization where we don't currently
set hv_evmcs_vmptr to '-1'.
Cc: stable@vger.kernel.org
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
With 7de3f1423f ("KVM: s390: Add new reset vcpu API") we clarified
the meaning of the reset ioctl to fully reset the CPU and not only the
parts that can not be handled by userspace. Turns out that we missed
some parts.
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Merge tag 'kvm-s390-master-5.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into kvm-master
KVM: s390: Fully do the CPU resets as intended
With 7de3f1423f ("KVM: s390: Add new reset vcpu API") we clarified
the meaning of the reset ioctl to fully reset the CPU and not only the
parts that can not be handled by userspace. Turns out that we missed
some parts.
Previously all fields of structure kvm_lapic_irq were not initialized
before it was passed to kvm_bitmap_or_dest_vcpus(). Which will cause
an issue when any of those fields are used for processing a request.
For example not initializing the msi_redir_hint field before passing
to the kvm_bitmap_or_dest_vcpus(), may lead to a misbehavior of
kvm_apic_map_get_dest_lapic(). This will specifically happen when the
kvm_lowest_prio_delivery() returns TRUE due to a non-zero garbage
value of msi_redir_hint, which should not happen as the request belongs
to APIC fixed delivery mode and we do not want to deliver the
interrupt only to the lowest priority candidate.
This patch initializes all the fields of kvm_lapic_irq based on the
values of ioapic redirect_entry object before passing it on to
kvm_bitmap_or_dest_vcpus().
Fixes: 7ee30bc132 ("KVM: x86: deliver KVM IOAPIC scan request to target vCPUs")
Signed-off-by: Nitesh Narayan Lal <nitesh@redhat.com>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
[Set level to false since the value doesn't really matter. Suggested
by Vitaly Kuznetsov. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Enable ENCLS-exiting (and thus set vmcs.ENCLS_EXITING_BITMAP) only if
the CPU supports SGX1. Per Intel's SDM, all ENCLS leafs #UD if SGX1
is not supported[*], i.e. intercepting ENCLS to inject a #UD is
unnecessary.
Avoiding ENCLS-exiting even when it is reported as supported by the CPU
works around a reported issue where SGX is "hard" disabled after an S3
suspend/resume cycle, i.e. CPUID.0x7.SGX=0 and the VMCS field/control
are enumerated as unsupported. While the root cause of the S3 issue is
unknown, it's definitely _not_ a KVM (or kernel) bug, i.e. this is a
workaround for what is most likely a hardware or firmware issue. As a
bonus side effect, KVM saves a VMWRITE when first preparing vmcs01 and
vmcs02.
Note, SGX must be disabled in BIOS to take advantage of this workaround
[*] The additional ENCLS CPUID check on SGX1 exists so that SGX can be
globally "soft" disabled post-reset, e.g. if #MC bits in MCi_CTL are
cleared. Soft disabled meaning disabling SGX without clearing the
primary CPUID bit (in leaf 0x7) and without poking into non-SGX
CPU paths, e.g. for the VMCS controls.
Fixes: 0b665d3040 ("KVM: vmx: Inject #UD for SGX ENCLS instruction in guest")
Reported-by: Toni Spets <toni.spets@iki.fi>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Commit b9c6ff94e4 ("iommu/amd: Re-factor guest virtual APIC
(de-)activation code") accidentally left out the ir_data pointer when
calling modity_irte_ga(), which causes the function amd_iommu_update_ga()
to return prematurely due to struct amd_ir_data.ref is NULL and
the "is_run" bit of IRTE does not get updated properly.
This results in bad I/O performance since IOMMU AVIC always generate GA Log
entry and notify IOMMU driver and KVM when it receives interrupt from the
PCI pass-through device instead of directly inject interrupt to the vCPU.
Fixes by passing ir_data when calling modify_irte_ga() as done previously.
Fixes: b9c6ff94e4 ("iommu/amd: Re-factor guest virtual APIC (de-)activation code")
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
VMD subdevices are created with a PCI domain ID of 0x10000 or
higher.
These subdevices are also handled like all other PCI devices by
dmar_pci_bus_notifier().
However, when dmar_alloc_pci_notify_info() take records of such devices,
it will truncate the domain ID to a u16 value (in info->seg).
The device at (e.g.) 10000:00:02.0 is then treated by the DMAR code as if
it is 0000:00:02.0.
In the unlucky event that a real device also exists at 0000:00:02.0 and
also has a device-specific entry in the DMAR table,
dmar_insert_dev_scope() will crash on:
BUG_ON(i >= devices_cnt);
That's basically a sanity check that only one PCI device matches a
single DMAR entry; in this case we seem to have two matching devices.
Fix this by ignoring devices that have a domain number higher than
what can be looked up in the DMAR table.
This problem was carefully diagnosed by Jian-Hong Pan.
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Daniel Drake <drake@endlessm.com>
Fixes: 59ce0515cd ("iommu/vt-d: Update DRHD/RMRR/ATSR device scope caches when PCI hotplug happens")
Signed-off-by: Joerg Roedel <jroedel@suse.de>
When base address in RHSA structure doesn't match base address in
each DRHD structure, the base address in last DRHD is printed out.
This doesn't make sense when there are multiple DRHD units, fix it
by printing the buggy RHSA's base address.
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@gmail.com>
Fixes: fd0c889489 ("intel-iommu: Set a more specific taint flag for invalid BIOS DMAR tables")
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Two small fixes, both in drivers: ipr and ufs.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Two small fixes, both in drivers: ipr and ufs"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: ipr: Fix softlockup when rescanning devices in petitboot
scsi: ufs: Fix possible unclocked access to auto hibern8 timer register
Fixes:
- Ensure the fs_context has the correct fs_type when mounting and submounting
- Fix leaking of ctx->nfs_server.hostname
- Add minor version to fscache key to prevent collisions
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Merge tag 'nfs-for-5.6-3' of git://git.linux-nfs.org/projects/anna/linux-nfs
Pull NFS client bugfixes from Anna Schumaker:
"These are mostly fscontext fixes, but there is also one that fixes
collisions seen in fscache:
- Ensure the fs_context has the correct fs_type when mounting and
submounting
- Fix leaking of ctx->nfs_server.hostname
- Add minor version to fscache key to prevent collisions"
* tag 'nfs-for-5.6-3' of git://git.linux-nfs.org/projects/anna/linux-nfs:
nfs: add minor version to nfs_server_key for fscache
NFS: Fix leak of ctx->nfs_server.hostname
NFS: Don't hard-code the fs_type when submounting
NFS: Ensure the fs_context has the correct fs_type before mounting
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Merge tag 'fuse-fixes-5.6-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse
Pull fuse fix from Miklos Szeredi:
"Fix an Oops introduced in v5.4"
* tag 'fuse-fixes-5.6-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
fuse: fix stack use after return
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Merge tag 'ovl-fixes-5.6-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs
Pull overlayfs fixes from Miklos Szeredi:
"Fix three bugs introduced in this cycle"
* tag 'ovl-fixes-5.6-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
ovl: fix lockdep warning for async write
ovl: fix some xino configurations
ovl: fix lock in ovl_llseek()
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Merge tag 'io_uring-5.6-2020-03-13' of git://git.kernel.dk/linux-block
Pull io_uring fix from Jens Axboe:
"Just a single fix here, improving the RCU callback ordering from last
week. After a bit more perusing by Paul, he poked a hole in the
original"
* tag 'io_uring-5.6-2020-03-13' of git://git.kernel.dk/linux-block:
io_uring: ensure RCU callback ordering with rcu_barrier()
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Merge tag 'block-5.6-2020-03-13' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"A few fixes that should go into this release. This contains:
- Fix for a corruption issue with the s390 dasd driver (Stefan)
- Fixup/improvement for the flush insertion change that we had in
this series (Ming)
- Fix for the partition suppor for host aware zoned devices
(Shin'ichiro)
- Fix incorrect blk-iocost comparison (Tejun)
The diffstat looks large, but that's a) mostly dasd, and b) the flush
fix from Ming adds a big comment"
* tag 'block-5.6-2020-03-13' of git://git.kernel.dk/linux-block:
block: Fix partition support for host aware zoned block devices
blk-mq: insert flush request to the front of dispatch queue
s390/dasd: fix data corruption for thin provisioned devices
blk-iocost: fix incorrect vtime comparison in iocg_is_idle()
- Fix HW busy detection support for host controllers requiring the
MMC_RSP_BUSY response flag (R1B) to be set for the command. In
particular for CMD6 (eMMC), erase/trim/discard (SD/eMMC) and CMD5
(eMMC sleep).
MMC host:
- sdhci-omap|tegra: Fix support for HW busy detection
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Merge tag 'mmc-v5.6-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC fixes from Ulf Hansson:
"MMC core:
- Fix HW busy detection support for host controllers requiring the
MMC_RSP_BUSY response flag (R1B) to be set for the command. In
particular for CMD6 (eMMC), erase/trim/discard (SD/eMMC) and CMD5
(eMMC sleep).
MMC host:
- sdhci-omap|tegra: Fix support for HW busy detection"
* tag 'mmc-v5.6-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
mmc: core: Respect MMC_CAP_NEED_RSP_BUSY for eMMC sleep command
mmc: sdhci-tegra: Fix busy detection by enabling MMC_CAP_NEED_RSP_BUSY
mmc: sdhci-omap: Fix busy detection by enabling MMC_CAP_NEED_RSP_BUSY
mmc: core: Respect MMC_CAP_NEED_RSP_BUSY for erase/trim/discard
mmc: core: Allow host controllers to require R1B for CMD6
If the shell test directory isn't present the exit code will be 255 but
with no error messages printed. Add an error message.
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20200313005602.45236-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
