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Mainline Linux tree for various devices, only for fun :)
2b2bfc8aa5
Some SoCs require a single scatterlist entry for smaller than page size, i.e. 4KB. When dispatching commands with more than one scatterlist entry under 4KB in size the following behavior is observed: A command to read a block range is dispatched with two scatterlist entries that are named AAA and BBB. After dispatching, the host builds two PRDT entries and during transmission, device sends just one DATA IN because device doesn't care about host DMA. The host then transfers the combined amount of data from start address of the area named AAA. As a consequence, the area that follows AAA in memory would be corrupted. |<------------->| +-------+------------ +-------+ + AAA + (corrupted) ... + BBB + +-------+------------ +-------+ To avoid this we need to enforce page size alignment for sg entries. Link: https://lore.kernel.org/r/56dddef94f60bd9466fd77e69f64bbbd657ed2a1.1611026909.git.kwmad.kim@samsung.com Signed-off-by: Kiwoong Kim <kwmad.kim@samsung.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> |
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arch | ||
block | ||
certs | ||
crypto | ||
Documentation | ||
drivers | ||
fs | ||
include | ||
init | ||
ipc | ||
kernel | ||
lib | ||
LICENSES | ||
mm | ||
net | ||
samples | ||
scripts | ||
security | ||
sound | ||
tools | ||
usr | ||
virt | ||
.clang-format | ||
.cocciconfig | ||
.get_maintainer.ignore | ||
.gitattributes | ||
.gitignore | ||
.mailmap | ||
COPYING | ||
CREDITS | ||
Kbuild | ||
Kconfig | ||
MAINTAINERS | ||
Makefile | ||
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.