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 kstefanj.github.io
Large pages and Java
| | www.evanjones.ca
Huge Pages are a Good Idea (evanjones.ca)
5.1 parsecs away

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| | [AI summary] The post explains how using huge pages in virtual memory can improve CPU performance by reducing translation lookaside buffer (TLB) misses, while discussing potential downsides like memory fragmentation and compatibility issues with certain software patterns.
| | blog.nelhage.com
Disable Transparent Hugepages - Made of Bugs
5.2 parsecs away

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| | tl;dr "Transparent Hugepages" is a Linux kernel feature intended to improve performance by making more efficient use of your processor's memory-mapping hardware. It is enabled ("enabled=always") by default in most Linux distributions. Transparent Hugepages gives some applications a small performance improvement (~ 10% at best, 0-3% more typically), but can cause significant performance problems, or even apparent memory leaks at worst. To avoid these problems, you should set enabled=madvise on your server...
| | rigtorp.se
Using Huge Pages on Linux | Erik Rigtorp
4.3 parsecs away

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| | In this article I will explain when and how to use huge pages.
| | a13xp0p0v.tech
Four Bytes of Power: Exploiting CVE-2021-26708 in the Linux kernel | Alexander Popov
23.4 parsecs away

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| CVE-2021-26708 is assigned to five race condition bugs in the virtual socket implementation of the Linux kernel. I discovered and fixed them in January 2021. In this article I describe how to exploit them for local privilege escalation on Fedora 33 Server for x86_64, bypassing SMEP and SMAP.