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https://www.kernel.org/doc/html/latest/x86/pat.html
PAT APIs¶. There are many different APIs in the kernel that allows setting of memory attributes at the page level. In order to avoid aliasing, these interfaces should be used thoughtfully. Below is a table of interfaces available, their intended usage and their memory attribute relationships.
https://www.linux.org/threads/the-linux-kernel-configuring-the-kernel-part-4.8851/
Jun 16, 2014 · For processors that support it, enable the kernel linear mapping to use 1GB pages (Enable 1GB pages for kernel pagetables (DIRECT_GBPAGES)). Enabling this feature helps performance by reducing TLB pressure. A page is the basic …
https://www.kernel.org/doc/ols/2008/ols2008v2-pages-135-144.pdf
where the driver depends on kernel PAT usage. 4 Current PAT effort 4.1 Earlier PAT attempts As was emphasised earlier, PAT as a hardware feature hasbeenaroundforfewyears. Duringthoseyears,there were quite a few attempts to enable PAT support in the Linux kernel. One of the initial attempts was from Jeff Hartmann [8] in January, 2001.
http://www.mjmwired.net/kernel/Documentation/x86/pat.txt
1 2 PAT (Page Attribute Table) 3 4 x86 Page Attribute Table (PAT) allows for setting the memory attribute at the 5 page level granularity. PAT is complementary to the MTRR settings which allows 6 for setting of memory types over physical address ranges.
https://unix.stackexchange.com/questions/72519/how-do-i-check-if-i-have-packet-socket-support-enabled-in-my-distros-kernel
1 Answer 1. Most Linux distributions include the config parameters used to compile the kernel in /boot/config-<kernel-version>. Should tell you if AF_PACKET socket support …
https://sourceforge.net/p/coan2/help/4/
How difficult would adding optional support for kernel style IS_ENABLED, IS_MODULE, and IS_BUILTIN be? I patched the original unifdef source provided in the kernel, which added support for these. I work on a Linux module which has several layers of configuration and we use unifdef today for pre-processing our code into distributable source.
http://dcjtech.info/topic/configuring-the-linux-kernel-part-4/
Jul 28, 2015 · To set up page-level cache control, enable PAT attributes (x86 PAT support (X86_PAT)). Page Attribute Table (PATs) are the modern equivalents of MTRRs and are much more flexible than MTRRs. If you experience bootup issues with this enabled, then remake the kernel …
https://wiki.gentoo.org/wiki/NVidia/nvidia-drivers/en
If the computer supports PAT and the feature is enabled in the kernel then this flag can be enabled. Without PAT support, users may experience unstable performance and even crashes if this is enabled. So be careful with these options. NVreg_EnableVia4x: 0: Enable AGP 4x mode in the the NVIDIA driver on Via-chipset-powered systems.
https://en.wikipedia.org/wiki/Kernel_Patch_Protection
Kernel Patch Protection is the technology that enforces these restrictions. It works by periodically checking to make sure that protected system structures in the kernel have not been modified. If a modification is detected, then Windows will initiate a bug check and shut down the system, with a blue screen and/or reboot. The corresponding bugcheck number is 0x109, the bugcheck code is …
https://www.kernel.org/doc/html/v4.14/admin-guide/kernel-parameters.html
The kernel’s command-line parameters¶. The following is a consolidated list of the kernel parameters as implemented by the __setup(), core_param() and module_param() macros and sorted into English Dictionary order (defined as ignoring all punctuation and sorting digits before letters in a case insensitive manner), and with descriptions where known.
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