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authorDaniel Borkmann <dborkman@redhat.com>2013-05-14 15:10:50 +0200
committerDaniel Borkmann <dborkman@redhat.com>2013-05-14 16:21:21 +0200
commitc53e506238cc18c268027f1a9aa6d13c7c4a8506 (patch)
tree94ec7355b736da3d3f6d530bc496a2f4375498e5 /netsniff-ng/Makefile
parentb5db443e823fffb2afb818e27a07cb25b87803e6 (diff)
man: add mausezahn man-page
Add the mausezahn man-page that is modified on top of the original man-page by Herbert Haas. Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Diffstat (limited to 'netsniff-ng/Makefile')
0 files changed, 0 insertions, 0 deletions
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-10-02 22:24:58 +0000
sertion mappings. It happens that the drm drivers for a number of gpus relied on this being broken. Currently the driver only inserted VRAM mappings into the tracking table when they came from the kernel, and userspace mappings never landed in the table. This led to a regression where all the mapping end up as UC instead of WC now. I've considered a number of solutions but since this needs to be fixed in fixes and not next, and some of the solutions were going to introduce overhead that hadn't been there before I didn't consider them viable at this stage. These mainly concerned hooking into the TTM io reserve APIs, but these API have a bunch of fast paths I didn't want to unwind to add this to. The solution I've decided on is to add a new API like the arch_phys_wc APIs (these would have worked but wc_del didn't take a range), and use them from the drivers to add a WC compatible mapping to the table for all VRAM on those GPUs. This means we can then create userspace mapping that won't get degraded to UC. v1.1: use CONFIG_X86_PAT + add some comments in io.h Cc: Toshi Kani <toshi.kani@hp.com> Cc: Borislav Petkov <bp@alien8.de> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Brian Gerst <brgerst@gmail.com> Cc: x86@kernel.org Cc: mcgrof@suse.com Cc: Dan Williams <dan.j.williams@intel.com> Acked-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'Documentation/hwmon/tmp401')