s390/dasd: prevent inconsistent LCU device data

Prevent _lcu_update from adding a device to a pavgroup if the LCU still
requires an update. The data is not reliable any longer and in parallel
device

s390/dasd: prevent inconsistent LCU device data

Prevent _lcu_update from adding a device to a pavgroup if the LCU still
requires an update. The data is not reliable any longer and in parallel
devices might have been moved on the lists already.
This might lead to list corruptions or invalid PAV grouping.
Only add devices to a pavgroup if the LCU is up to date. Additional steps
are taken by the scheduled lcu update.

Fixes: 8e09f21574ea ("[S390] dasd: add hyper PAV support to DASD device driver, part 1")
Cc: stable@vger.kernel.org
Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Reviewed-by: Jan Hoeppner <hoeppner@linux.ibm.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

show more ...

s390/dasd: fix hanging device offline processing

For an LCU update a read unit address configuration IO is required.
This is started using sleep_on(), which has early exit paths in case the
device i

s390/dasd: fix hanging device offline processing

For an LCU update a read unit address configuration IO is required.
This is started using sleep_on(), which has early exit paths in case the
device is not usable for IO. For example when it is in offline processing.

In those cases the LCU update should fail and not be retried.
Therefore lcu_update_work checks if EOPNOTSUPP is returned or not.

Commit 41995342b40c ("s390/dasd: fix endless loop after read unit address configuration")
accidentally removed the EOPNOTSUPP return code from
read_unit_address_configuration(), which in turn might lead to an endless
loop of the LCU update in offline processing.

Fix by returning EOPNOTSUPP again if the device is not able to perform the
request.

Fixes: 41995342b40c ("s390/dasd: fix endless loop after read unit address configuration")
Cc: stable@vger.kernel.org #5.3
Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Reviewed-by: Jan Hoeppner <hoeppner@linux.ibm.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Merge branch 'linus' into x86/hyperv

Pick up upstream fixes to avoid conflicts.

Merge tag 'v5.4-rc3' into spi-5.4

Linux 5.4-rc3

Merge drm/drm-next into drm-misc-next

We haven't done any backmerge for a while due to the merge window, and it
starts to become an issue for komeda. Let's bring 5.4-rc1 in.

Signed-off-by: Maxime R

Merge drm/drm-next into drm-misc-next

We haven't done any backmerge for a while due to the merge window, and it
starts to become an issue for komeda. Let's bring 5.4-rc1 in.

Signed-off-by: Maxime Ripard <mripard@kernel.org>

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Merge branch 'fixes-merge-window-pt2' into fixes

Merge branch 'next' into for-linus

Prepare input updates for 5.4 merge window.

Merge branch 'for-next' into for-linus

Signed-off-by: Takashi Iwai <tiwai@suse.de>

Merge tag 'kvmarm-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD

KVM/arm updates for 5.4

- New ITS translation cache
- Allow up to 512 CPUs to be supported with GICv3

Merge tag 'kvmarm-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD

KVM/arm updates for 5.4

- New ITS translation cache
- Allow up to 512 CPUs to be supported with GICv3 (for real this time)
- Now call kvm_arch_vcpu_blocking early in the blocking sequence
- Tidy-up device mappings in S2 when DIC is available
- Clean icache invalidation on VMID rollover
- General cleanup

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Merge tag 'asoc-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-next

ASoC: Updates for v5.4

Quite a big update this time around, particularly in the core
where we've h

Merge tag 'asoc-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-next

ASoC: Updates for v5.4

Quite a big update this time around, particularly in the core
where we've had a lot of cleanups from Morimoto-san - there's
not much functional change but quite a bit of modernization
going on. We've also seen a lot of driver work, a lot of it
cleanups but also some particular drivers.

- Lots and lots of cleanups from Morimoto-san and Yue Haibing.
- Lots of cleanups and enhancements to the Freescale, sunxi dnd
Intel rivers.
- Initial Sound Open Firmware suppot for i.MX8.
- Removal of w90x900 and nuc900 drivers as the platforms are
being removed.
- New support for Cirrus Logic CS47L15 and CS47L92, Freescale
i.MX 7ULP and 8MQ, Meson G12A and NXP UDA1334

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Merge tag 'v5.3-rc7' into devel

Linux 5.3-rc7

Merge branch 'char-misc-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc into fpga-dfl-for-5.4

Merge tag 'v5.3-rc7' into x86/mm, to pick up fixes

Signed-off-by: Ingo Molnar <mingo@kernel.org>

Merge tag 'v5.3-rc6' into spi-nor/next

Linux 5.3-rc6

Merge back latest release candidate, to include a fix that
we depend on for new development:
834de5c1aa76 ("mtd: spi-nor: Fix the disabling of w

Merge tag 'v5.3-rc6' into spi-nor/next

Linux 5.3-rc6

Merge back latest release candidate, to include a fix that
we depend on for new development:
834de5c1aa76 ("mtd: spi-nor: Fix the disabling of write protection at init")

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Merge tag 'v5.3-rc6' into x86/cpu, to pick up fixes

Signed-off-by: Ingo Molnar <mingo@kernel.org>

Merge branch 'master' into for-5.4/logitech

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>

Merge drm/drm-next into drm-intel-next-queued

We need the rename of reservation_object to dma_resv.

The solution on this merge came from linux-next:
From: Stephen Rothwell <sfr@canb.auug.org.au>
Da

Merge drm/drm-next into drm-intel-next-queued

We need the rename of reservation_object to dma_resv.

The solution on this merge came from linux-next:
From: Stephen Rothwell <sfr@canb.auug.org.au>
Date: Wed, 14 Aug 2019 12:48:39 +1000
Subject: [PATCH] drm: fix up fallout from "dma-buf: rename reservation_object to dma_resv"

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
---
drivers/gpu/drm/i915/gt/intel_engine_pool.c | 8 ++++----
3 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_engine_pool.c b/drivers/gpu/drm/i915/gt/intel_engine_pool.c
index 03d90b49584a..4cd54c569911 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_pool.c
+++ b/drivers/gpu/drm/i915/gt/intel_engine_pool.c
@@ -43,12 +43,12 @@ static int pool_active(struct i915_active *ref)
{
struct intel_engine_pool_node *node =
container_of(ref, typeof(*node), active);
- struct reservation_object *resv = node->obj->base.resv;
+ struct dma_resv *resv = node->obj->base.resv;
int err;

- if (reservation_object_trylock(resv)) {
- reservation_object_add_excl_fence(resv, NULL);
- reservation_object_unlock(resv);
+ if (dma_resv_trylock(resv)) {
+ dma_resv_add_excl_fence(resv, NULL);
+ dma_resv_unlock(resv);
}

err = i915_gem_object_pin_pages(node->obj);

which is a simplified version from a previous one which had:
Reviewed-by: Christian König <christian.koenig@amd.com>

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

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Merge branch 'odp_fixes' into hmm.git

From rdma.git

Jason Gunthorpe says:

====================
This is a collection of general cleanups for ODP to clarify some of the
flows around umem creation an

Merge branch 'odp_fixes' into hmm.git

From rdma.git

Jason Gunthorpe says:

====================
This is a collection of general cleanups for ODP to clarify some of the
flows around umem creation and use of the interval tree.
====================

The branch is based on v5.3-rc5 due to dependencies, and is being taken
into hmm.git due to dependencies in the next patches.

* odp_fixes:
RDMA/mlx5: Use odp instead of mr->umem in pagefault_mr
RDMA/mlx5: Use ib_umem_start instead of umem.address
RDMA/core: Make invalidate_range a device operation
RDMA/odp: Use kvcalloc for the dma_list and page_list
RDMA/odp: Check for overflow when computing the umem_odp end
RDMA/odp: Provide ib_umem_odp_release() to undo the allocs
RDMA/odp: Split creating a umem_odp from ib_umem_get
RDMA/odp: Make the three ways to create a umem_odp clear
RMDA/odp: Consolidate umem_odp initialization
RDMA/odp: Make it clearer when a umem is an implicit ODP umem
RDMA/odp: Iterate over the whole rbtree directly
RDMA/odp: Use the common interval tree library instead of generic
RDMA/mlx5: Fix MR npages calculation for IB_ACCESS_HUGETLB

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

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Merge branch 'odp_fixes' into rdma.git for-next

Jason Gunthorpe says:

====================
This is a collection of general cleanups for ODP to clarify some of the
flows around umem creation and use

Merge branch 'odp_fixes' into rdma.git for-next

Jason Gunthorpe says:

====================
This is a collection of general cleanups for ODP to clarify some of the
flows around umem creation and use of the interval tree.
====================

The branch is based on v5.3-rc5 due to dependencies

* odp_fixes:
RDMA/mlx5: Use odp instead of mr->umem in pagefault_mr
RDMA/mlx5: Use ib_umem_start instead of umem.address
RDMA/core: Make invalidate_range a device operation
RDMA/odp: Use kvcalloc for the dma_list and page_list
RDMA/odp: Check for overflow when computing the umem_odp end
RDMA/odp: Provide ib_umem_odp_release() to undo the allocs
RDMA/odp: Split creating a umem_odp from ib_umem_get
RDMA/odp: Make the three ways to create a umem_odp clear
RMDA/odp: Consolidate umem_odp initialization
RDMA/odp: Make it clearer when a umem is an implicit ODP umem
RDMA/odp: Iterate over the whole rbtree directly
RDMA/odp: Use the common interval tree library instead of generic
RDMA/mlx5: Fix MR npages calculation for IB_ACCESS_HUGETLB

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

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Merge tag 'v5.3-rc5' into devel

Linux 5.3-rc5

Merge tag 'perf-core-for-mingo-5.4-20190814' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core

Pull perf/core improvements and fixes from Arnaldo:

Intel PT:

Adrian Hunte

Merge tag 'perf-core-for-mingo-5.4-20190814' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core

Pull perf/core improvements and fixes from Arnaldo:

Intel PT:

Adrian Hunter:

- Add PEBS via Intel PT support, the kernel bits went via PeterZ.

perf record:

Alexander Shishkin:

- Add an option to take an AUX snapshot on exit.

Tan Xiaojun:

- Support aarch64 random socket_id assignment, just like was fixed for S/390.

tools:

Andy Shevchenko:

- Keep list of tools in alphabetical order on 'make -C tools help'.

perf session:

Arnaldo Carvalho de Melo:

- Avoid infinite loop when seeing invalid header.size, reported by
Vince Weaver using a perf.data fuzzer.

Documentation:

Vince Weaver:

- Clarify HEADER_SAMPLE_TOPOLOGY format in the perf.data spec.

perf config:

Arnaldo Carvalho de Melo:

- Honour $PERF_CONFIG env var to specify alternate .perfconfig.

perf test:

Arnaldo Carvalho de Melo:

- Disable ~/.perfconfig to get default output in 'perf trace' tests.

perf top:

Arnaldo Carvalho de Melo:

- Set display thread COMM to help with debugging.

- Collapse and resort evsels in a group, so that we have output
similar to 'perf report' when using event groups, i.e.

perf top -e '{cycles,instructions}'

Will have two columns, and the instructions one will work.

core:

Igor Lubashev:

- Detect if libcap development files are available so that we
can use capabilities to match the checks made by the kernel instead
of using plain (geteuid() == 0).

Intel:

Haiyan Song:

- Add Icelake V1.00 event file.

perf trace:

Leo Yan:

- Fix segmentation fault when access syscall info on arm64.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

show more ...

Merge remote-tracking branch 'torvalds/master' into perf/core

To get closer to upstream and check if we need to sync more UAPI
headers, pick up fixes for libbpf that prevent perf's container tests
f

Merge remote-tracking branch 'torvalds/master' into perf/core

To get closer to upstream and check if we need to sync more UAPI
headers, pick up fixes for libbpf that prevent perf's container tests
from completing successfuly, etc.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

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Merge tag 'v5.3-rc4' into patchwork

Linux 5.3-rc4

* tag 'v5.3-rc4': (750 commits)
Linux 5.3-rc4
Makefile: Convert -Wimplicit-fallthrough=3 to just -Wimplicit-fallthrough for clang
ARM: ep93xx

Merge tag 'v5.3-rc4' into patchwork

Linux 5.3-rc4

* tag 'v5.3-rc4': (750 commits)
Linux 5.3-rc4
Makefile: Convert -Wimplicit-fallthrough=3 to just -Wimplicit-fallthrough for clang
ARM: ep93xx: Mark expected switch fall-through
scsi: fas216: Mark expected switch fall-throughs
pcmcia: db1xxx_ss: Mark expected switch fall-throughs
video: fbdev: omapfb_main: Mark expected switch fall-throughs
watchdog: riowd: Mark expected switch fall-through
s390/net: Mark expected switch fall-throughs
crypto: ux500/crypt: Mark expected switch fall-throughs
watchdog: wdt977: Mark expected switch fall-through
watchdog: scx200_wdt: Mark expected switch fall-through
watchdog: Mark expected switch fall-throughs
ARM: signal: Mark expected switch fall-through
mfd: omap-usb-host: Mark expected switch fall-throughs
mfd: db8500-prcmu: Mark expected switch fall-throughs
ARM: OMAP: dma: Mark expected switch fall-throughs
ARM: alignment: Mark expected switch fall-throughs
ARM: tegra: Mark expected switch fall-through
ARM/hw_breakpoint: Mark expected switch fall-throughs
mm/memremap: Fix reuse of pgmap instances with internal references
...

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Merge remote-tracking branch 'drm/drm-fixes' into drm-misc-fixes

Backport requested for omap dma mask fix. I'm not sure it still
requires it, but just in case. :)

Signed-off-by: Maarten Lankhorst <

Merge remote-tracking branch 'drm/drm-fixes' into drm-misc-fixes

Backport requested for omap dma mask fix. I'm not sure it still
requires it, but just in case. :)

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>

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Merge tag 'v5.3-rc4' into next

Sync up with mainline to bring in device_property_count_u32 andother
newer APIs.