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Filename Latest commit message Latest commit date
Logan Gunthorpe 2b97e354e5 NTB: Revert the change to use the NTB device dev for DMA allocations 
[ Upstream commit 40da7d9a93c8941737ef4a1208d32c13ce017fe1 ]

Commit 417cf39cfe ("NTB: Set dma mask and dma coherent mask to NTB
devices") started using the NTB device for DMA allocations which was
turns out was wrong. If the IOMMU is enabled, such alloctanions will
always fail with messages such as:

  DMAR: Allocating domain for 0000:02:00.1 failed

This is because the IOMMU has not setup the device for such use.

Change the tools back to using the PCI device for allocations seeing
it doesn't make sense to add an IOMMU group for the non-physical NTB
device. Also remove the code that sets the DMA mask as it no longer
makes sense to do this.

Fixes: 7f46c8b3a5 ("NTB: ntb_tool: Add full multi-port NTB API support")
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Tested-by: Alexander Fomichev <fomichev.ru@gmail.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-06-24 17:50:40 +02:00
arch openrisc: Fix issue with argument clobbering for clone/fork 2020-06-24 17:50:37 +02:00
block iocost: don't let vrate run wild while there's no saturation signal 2020-06-22 09:31:06 +02:00
certs
crypto crypto: drbg - fix error return code in drbg_alloc_state() 2020-06-17 16:40:31 +02:00
Documentation dt-bindings: display: mediatek: control dpi pins mode to avoid leakage 2020-06-22 09:30:58 +02:00
drivers NTB: Revert the change to use the NTB device dev for DMA allocations 2020-06-24 17:50:40 +02:00
fs gfs2: fix use-after-free on transaction ail lists 2020-06-24 17:50:40 +02:00
include include/linux/bitops.h: avoid clang shift-count-overflow warnings 2020-06-24 17:50:39 +02:00
init x86: Fix early boot crash on gcc-10, third try 2020-05-20 08:20:34 +02:00
ipc ipc/util.c: sysvipc_find_ipc() incorrectly updates position index 2020-05-20 08:20:16 +02:00
kernel blktrace: fix endianness for blk_log_remap() 2020-06-24 17:50:39 +02:00
lib lib/zlib: remove outdated and incorrect pre-increment optimization 2020-06-24 17:50:39 +02:00
LICENSES
mm mm: call cond_resched() from deferred_init_memmap() 2020-06-22 09:31:14 +02:00
net rxrpc: Adjust /proc/net/rxrpc/calls to display call->debug_id not user_ID 2020-06-24 17:50:37 +02:00
samples samples: bpf: Fix build error 2020-06-03 08:21:15 +02:00
scripts scripts: headers_install: Exit with error on config leak 2020-06-24 17:50:33 +02:00
security apparmor: fix nnp subset test for unconfined 2020-06-24 17:50:20 +02:00
sound ASoC: fsl_asrc_dma: Fix dma_chan leak when config DMA channel failed 2020-06-24 17:50:36 +02:00
tools selftests/vm/pkeys: fix alloc_random_pkey() to make it really random 2020-06-24 17:50:39 +02:00
usr initramfs: restore default compression behavior 2020-04-08 09:08:38 +02:00
virt KVM: arm64: Save the host's PtrAuth keys in non-preemptible context 2020-06-17 16:40:38 +02:00
.clang-format
.cocciconfig
.get_maintainer.ignore
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MAINTAINERS MAINTAINERS: Update drm/i915 bug filing URL 2020-02-28 17:22:19 +01:00
Makefile Linux 5.4.48 2020-06-22 09:31:27 +02:00
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.