Web2 dec. 2011 · monitor で監視したいアドレスを指定 mwait で監視アドレスが書きかわるまで待機 となっていて、 addr = 監視したいキャッシュラインのアドレス; while ( 1) { monitor (addr); if (*addr == check_value) break ; mwait (c_state); if (*addr == check_value) break ; } と、いうような感じにする。 c_state は、 x86 のスリープの状態の指定で…えーと… Web2 apr. 2024 · MWAIT, on the other hand, should be executed after MONITOR and you can use ECX in order to config MWAIT about interrupts. If ECX [0th Bit] = 0, then MWAIT will …
War on Theism: x86 Instruction Set Reference - GitHub Pages
WebThe state of monitor hardware is used by MWAIT. The address is specified in RAX/EAX/AX and the size is based on the effective address size of the encoded instruction. By default, the DS segment is used to create a linear address that is monitored. Segment overrides can be used. ECX and EDX are also used. Web30 sep. 2024 · We also confirmed that the use of the “MWAIT/MONITOR” instruction requires checking availability on the target CPU, and when following this rule, it is safe even if disabling the monitor feature in the guest CPU. We proposed a solution of hacking libvirt and bypassing the monitor feature check in order to make a successful live migration. hp bluetooth smart printers
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WebStreaming SIMD Extensions 3 introduced two instructions (MONITOR and MWAIT) to help multithreaded software improve thread synchronization. In the initial implementation, MONITOR and MWAIT are available to software at ring 0. The instructions are conditionally available at levels greater than 0. Use the following steps to detect the Web*PATCH v4 1/4] x86/phi: Add R3MWAIT register and bit to msr-info.h 2016-10-18 10:02 [PATCH v4 0/4] Enabling Ring 3 MONITOR/MWAIT feature for Knights Landing Grzegorz Andrejczuk @ 2016-10-18 10:02 ` Grzegorz Andrejczuk 2016-10-18 10:02 ` [PATCH v4 2/4] x86/phi: Add enabling of the R3MWAIT during boot Grzegorz Andrejczuk ` (2 subsequent ... hp bluetooth イヤホン 接続の仕方