For segments, the job is split between hardware and microcode. When LD_DESCRIPTOR fires its protection test at 5CD, the Test PLA OR's the A-bit (bit 8 of the descriptor high DWORD) into a temporary register called PROTUN. Then the microcode at PROT_TESTS_PASSED takes over and writes the modified value back to the GDT or LDT in memory:
Дмитриев рассказал об обсуждении с США возможного ослабления санкцийДмитриев заявил об обсуждении с США возможного ослабления санкций
including a fix for the scrolltobottom/fill-wrap dependency issue.，这一点在新收录的资料中也有详细论述
Российских гандболистов допустят до международных турнировМолодежную сборную России по гандболу допустят до международных турниров。新收录的资料是该领域的重要参考
any performance cost is acceptable as long as it’s O(1).，推荐阅读新收录的资料获取更多信息
Messages from udev to generic userspace programs are also expected to come from either uid 0 or else something relating to user namespaces which I don't fully understand. I also don't understand why it is necessary for random programs to check this, since netlink normally only allows uid 0 to send messages.