Linus Torvalds 7007c89463 Reinstate some of "swiotlb: rework "fix info leak with DMA_FROM_DEVICE"" ...

commit 901c7280ca0d5e2b4a8929fbe0bfb007ac2a6544 upstream.

Halil Pasic points out [1] that the full revert of that commit (revert
in bddac7c1e02b), and that a partial revert that only reverts the
problematic case, but still keeps some of the cleanups is probably
better.  

And that partial revert [2] had already been verified by Oleksandr
Natalenko to also fix the issue, I had just missed that in the long
discussion.

So let's reinstate the cleanups from commit aa6f8dcbab47 ("swiotlb:
rework "fix info leak with DMA_FROM_DEVICE""), and effectively only
revert the part that caused problems.

Link: https://lore.kernel.org/all/20220328013731.017ae3e3.pasic@linux.ibm.com/ [1]
Link: https://lore.kernel.org/all/20220324055732.GB12078@lst.de/ [2]
Link: https://lore.kernel.org/all/4386660.LvFx2qVVIh@natalenko.name/ [3]
Suggested-by: Halil Pasic <pasic@linux.ibm.com>
Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2022-04-08 14:24:13 +02:00

..

irq

Documentation: Fix irq-domain.rst build warning

2021-09-03 09:54:15 +01:00

assoc_array.rst

Documentation: Use "while" instead of "whilst"

2018-11-20 09:30:43 -07:00

boot-time-mm.rst

docs/boot-time-mm: remove bootmem documentation

2018-10-31 08:54:16 -07:00

bus-virt-phys-mapping.rst

docs: core-api: avoid using ReST :doc:foo markup

2021-06-17 13:24:37 -06:00

cachetlb.rst

mm: remove flush_kernel_dcache_page

2021-09-03 09:58:13 -07:00

circular-buffers.rst

doc: Remove ".vnet" from paulmck email addresses

2019-05-28 09:02:57 -07:00

cpu_hotplug.rst

Documentation: core-api/cpuhotplug: Rewrite the API section

2021-09-11 00:41:21 +02:00

debug-objects.rst

…

debugging-via-ohci1394.rst

docs: debugging-via-ohci1394.txt: add it to the core-api book

2020-05-15 11:59:17 -06:00

dma-api-howto.rst

docs: move DMA kAPI to Documentation/core-api

2020-05-15 11:51:54 -06:00

dma-api.rst

docs: core-api: avoid using ReST :doc:foo markup

2021-06-17 13:24:37 -06:00

dma-attributes.rst

Reinstate some of "swiotlb: rework "fix info leak with DMA_FROM_DEVICE""

2022-04-08 14:24:13 +02:00

dma-isa-lpc.rst

docs: core-api: avoid using ReST :doc:foo markup

2021-06-17 13:24:37 -06:00

errseq.rst

…

genalloc.rst

lib/genalloc.c: rename addr_in_gen_pool to gen_pool_has_addr

2019-12-04 19:44:13 -08:00

generic-radix-tree.rst

generic radix trees

2019-03-12 10:04:02 -07:00

genericirq.rst

docs: genericirq.rst: don't document chip.c functions twice

2020-10-15 07:49:41 +02:00

gfp_mask-from-fs-io.rst

…

idr.rst

Core-api: Documentation: Replace deprecated :c:func: Usage

2020-08-11 10:26:08 -06:00

index.rst

docs: core-api: avoid using ReST :doc:foo markup

2021-06-17 13:24:37 -06:00

kernel-api.rst

block: move fs/block_dev.c to block/bdev.c

2021-09-07 08:39:40 -06:00

kobject.rst

kobject: documentation: Replace HTTP links with HTTPS ones

2020-07-13 09:30:41 -06:00

kref.rst

docs: move the kref doc into the core-api book

2020-05-15 12:02:19 -06:00

librs.rst

…

local_ops.rst

…

memory-allocation.rst

mm: slab: provide krealloc_array()

2020-12-15 12:13:37 -08:00

memory-hotplug.rst

…

mm-api.rst

mm/mmzone.h: fix existing kernel-doc comments and link them to core-api

2021-04-30 11:20:43 -07:00

packing.rst

docs: packing: move it to core-api book and adjust markups

2019-07-31 13:30:01 -06:00

padata.rst

padata: fold padata_alloc_possible() into padata_alloc()

2020-07-23 17:34:18 +10:00

pin_user_pages.rst

selftests/vm: only some gup_test items are really benchmarks

2020-12-15 12:13:38 -08:00

printk-basics.rst

printk: Move the printk() kerneldoc comment to its new home

2021-07-26 12:36:44 +02:00

printk-formats.rst

docs: printk-formats: fix build warning

2021-07-25 14:34:32 -06:00

protection-keys.rst

x86/Kconfig: Update config and kernel doc for MPK feature on AMD

2020-05-28 18:27:40 +02:00

rbtree.rst

docs: rbtree.rst: Fix a typo

2021-03-25 11:38:51 -06:00

refcount-vs-atomic.rst

docs: remove :c:func: from refcount-vs-atomic.rst

2019-10-07 09:08:56 -06:00

symbol-namespaces.rst

docs/core-api: Consistent code style

2021-05-03 16:52:50 -06:00

this_cpu_ops.rst

docs: move other kAPI documents to core-api

2020-06-26 11:33:42 -06:00

timekeeping.rst

docs: timekeeping: Use correct prototype for deprecated functions

2020-04-15 14:48:26 -06:00

tracepoint.rst

…

unaligned-memory-access.rst

docs: move other kAPI documents to core-api

2020-06-26 11:33:42 -06:00

workqueue.rst

docs: basics.rst: move kernel-doc workqueue markups to workqueue.rst

2020-10-15 07:49:41 +02:00

xarray.rst

XArray: add xas_split

2020-10-16 11:11:15 -07:00