virtual-machine

Difference between Sensitive Instructions and Privileged Instructions

徘徊边缘 提交于 2020-08-06 04:34:51
问题 I've been searching for a clear difference b/w a Sensitive and Privileged instruction but its all blurry right now. As far as i know: A sensitive instruction NEEDS TO trap to kernel mode if executed in User space else it gets ignored while a Privileged instruction WILL TRAP to Kernel mode if executed in User space. This difference is vague and unsatisfactory for me. Feel free to drop an AWESOME answer! EDIT: Just a thought, are these the same thing? 回答1: The terms are usually used in the

not have enough resources available to fulfil the request try a different zone

只愿长相守 提交于 2020-08-04 16:25:36
问题 not have enough resources available to fulfill the request try a different zone All of my machines in the different zone have the same issue and can not run. "Starting VM instance "home-1" failed. Error: The zone 'projects/extreme-pixel-208800/zones/us-west1-b' does not have enough resources available to fulfill the request. Try a different zone, or try again later." 回答1: I am having the same issue. I emailed google and figured out this has nothing to do with quota. However, you can try to

How to safely run user-supplied Javascript code inside the browser?

回眸只為那壹抹淺笑 提交于 2020-07-17 05:42:03
问题 Imagine a scenario where I want to continuously invoke user-supplied Javascript code, like in the following example, where getUserResult is a function that some user (not myself) has written: for (var i = 0; i < N; ++i) { var x = getUserResult(currentState); updateState(currentState, x); } How can I execute that kind of code in a browser and/or Node.js, without any security risks? More generally, how can I execute a Javascript function that is not allowed to modify or even read the current

How to safely run user-supplied Javascript code inside the browser?

六月ゝ 毕业季﹏ 提交于 2020-07-17 05:41:07
问题 Imagine a scenario where I want to continuously invoke user-supplied Javascript code, like in the following example, where getUserResult is a function that some user (not myself) has written: for (var i = 0; i < N; ++i) { var x = getUserResult(currentState); updateState(currentState, x); } How can I execute that kind of code in a browser and/or Node.js, without any security risks? More generally, how can I execute a Javascript function that is not allowed to modify or even read the current

JVM crashes with problematic frame [libjvm.so+0x7f582e] PerfLongVariant::sample()+0x1e

寵の児 提交于 2020-06-27 15:24:26
问题 The application is basically a Servlet on top of Apaches Tomcat 8 and crashes every 3 to n days. The most interesting part is, that the last 3 crashes happened at 1.30 PM + 3 to 4 seconds. Every other crash happens at 15, 30, 45 or the full hour. The same application worked for months on Windows 7 with Java 7 something. I found this report so I checked the available space at /tmp and I have plenty of space here. However, the next time I ran the VM with: -XX:-UsePerfData -XX:

HAXM does not support nested virtual machines GCP

僤鯓⒐⒋嵵緔 提交于 2020-06-26 08:03:50
问题 I am trying to use an Android virtual device (AVD) on my android development environment which is a GCP Compute Engine Windows server Virtual Machine. When I try to create a virtual android device I get a recommendation that states: HAXM does not support nested virtual machines How can I create an Android virtual device in side of my GCP Windows Server VM? 回答1: This was indeed a hard problem to solve. Preet Parekh and I finally came up with a solution for this. The results were extremely