Hi, I am sorry but I am really tempted to share - https://www.linuxjournal.com/article/8110 But as suggested, you should never try this. Regards, Saket Sinha On Tue, Sep 24, 2019 at 10:50 AM Valdis Klētnieks <valdis.kletnieks@xxxxxx> wrote: > > On Tue, 24 Sep 2019 16:10:07 +0900, Sahibzada Irfanullah said: > > > subject line. The problem is: I am trying to write/read page faulted > > physical addresses to a file in a kernel (v5.3-1) function, i.e., > > handle_ept_violation() which is present in vmx.c. I have followed this > > <https://stackoverflow.com/questions/1184274/read-write-files-within-a-linux-kernel-module>, > > Just because somebody on stackoverflow gave a guide doesn't mean it's > a good idea. > > What problem are you trying to solve here? Are you trying to write the faulted > pages themselves to a file? In that case, just creating the file, using something like > 'dd if=/dev/zero of=/your/file/here bs=1M count=4096' and then using mkswap > and swapon will probably work much better. > > If you're trying to produce a trace of what pages are being faulted, you can > probably do a better job by using 'perf' to produce trace events with a lot of > added data for you, or use debugfs or netlink and a userspace program to read > the data and write it to disk from userspace. > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies@xxxxxxxxxxxxxxxxx > https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
