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PAT (Page Attribute Table) x86 Page Attribute Table (PAT) allows for ...
https://www.kernel.org/doc/Documentation/x86/pat.t ...
PAT is complementary to the MTRR settings which allows for setting of memory types over physical address ranges. ... In addition, step 2 internally tracks the region as UC or WC in memtype list in order to ensure no conflicting mapping.
13. PAT (Page Attribute Table) — The Linux Kernel documentation
https://www.kernel.org/doc/html/latest/x86/pat.htm ...
PAT is complementary to the MTRR settings which allows for setting of memory types over physical address ranges. ... WB/WC/UC-. (from existing alias). /dev/ mem mmap !SYNC flag no alias to this area and MTRR says WB, –, WB, WB.
11. PAT (Page Attribute Table) — The Linux Kernel documentation
https://www.kernel.org/doc/html/v5.2/x86/pat.html
PAT is complementary to the MTRR settings which allows for setting of memory types over physical address ranges. ... WB/WC/UC-. (from existing alias). /dev/ mem mmap !SYNC flag no alias to this area and MTRR says WB, –, WB, WB.
Memory type range register - Wikipedia
https://en.wikipedia.org/wiki/Memory_type_range_re ...
The memory interface of AMD K8 CPUs supports "Extended fixed-range MTRR Type-Field Encodings" which allows one to specify whether accesses to certain address ranges are executed by accessing RAM through the Direct Connect ...
Maintaining cache coherency - Xen
http://www-archive.xenproject.org/files/xensummitb ...
Guest OS uses no-fill mode before changing MTRR/PAT MSRs. Hardware doesn' t support ... memory types with physical address ranges in the system memory. WP. WP. WP. UC. UC. WP. UC. WB. WT. WC. UC. WB. WC. WP. WT. WC. UC. WP .
11. PAT (Page Attribute Table) — The Linux Kernel documentation
https://01.org/linuxgraphics/gfx-docs/drm/x86/pat. ...
PAT is complementary to the MTRR settings which allows for setting of memory types over physical address ranges. ... WB/WC/UC-. (from existing alias). /dev/ mem mmap !SYNC flag no alias to this area and MTRR says WB, --, WB, WB.
How MTRR registers implemented? - Stack Overflow
https://stackoverflow.com/questions/13297178/how-m ...
Part 7, chapter 24 "Pentium Pro software enchancement", part "MTRR added". There are long rules for every mtrr memory type at pages 582-584, but rules for all 5 types (Uncacheable=UC, Write-Combining ...
Page 433
https://xem.github.io/minix86/manual/intel-x86-and ...
The availability of the MTRR feature is model-specific. Software can determine if MTRRs are supported on a processor by executing the CPUID instruction and reading the state of the MTRR flag (bit 12) in the feature infor- ... Uncacheable ( UC).
John McCalpin's blog » MTRR - UT WordPress Theme
https://sites.utexas.edu/jdm4372/tag/mtrr/
At least in the AMD Family 10h processors, this IORR function works, but due to some implementation issues in this particular use case it forces the region to the MTRR UC (uncached) type, which defeats my purpose in the exercise. I think that  ...
Solved: What are the recommended MTRR settings in the Linu ...
https://community.amd.com/t5/-/-/td-p/149225
Jul 13, 2018 ... Solved: At the moment I have set: tux ~ # cat /usr/src/linux/.config | grep MTRR CONFIG_ MTRR =y CONFIG_ MTRR _SANITIZER=y CONFIG_ ... [ 0.000000] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WC UC- WT.