Go to file
Felix Kuehling ab2f7a5c18 drm/amdgpu: Implement VRAM wipe on release
Wipe VRAM memory containing sensitive data when moving or releasing
BOs. Clearing the memory is pipelined to minimize any impact on
subsequent memory allocation latency. Use of a poison value should
help debug future use-after-free bugs.

When moving BOs, the existing ttm_bo_pipelined_move ensures that the
memory won't be reused before being wiped.

When releasing BOs, the BO is fenced with the memory fill operation,
which results in queuing the BO for a delayed delete.

v2: Move amdgpu_amdkfd_unreserve_memory_limit into
amdgpu_bo_release_notify so that KFD can use memory that's still
being cleared in the background

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-08-02 10:18:32 -05:00
arch
block
certs
crypto
Documentation Merge commit 'refs/for-upstream/mali-dp' of git://linux-arm.org/linux-ld into drm-next 2019-06-25 12:56:40 +10:00
drivers drm/amdgpu: Implement VRAM wipe on release 2019-08-02 10:18:32 -05:00
fs
include drm/amdgpu: Add flag to wipe VRAM on release 2019-08-02 10:18:23 -05:00
init
ipc
kernel
lib
LICENSES
mm Merge branch 'vmwgfx-next' of git://people.freedesktop.org/~thomash/linux into drm-next 2019-06-21 12:18:16 +10:00
net
samples
scripts
security
sound
tools
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS Merge branch 'vmwgfx-next' of git://people.freedesktop.org/~thomash/linux into drm-next 2019-06-21 12:18:16 +10:00
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.