Luca Falavigna <[EMAIL PROTECTED]> writes: > Eric W. Biederman ha scritto: >> So without doing passing --real-mode the vga= parameter currently >> cannot work. The vga= parameter is processed by vga.S which >> make BIOS calls and we bypass all of the BIOS calls. > Actually that file is video.S
Oops. Anyway I believe you also want to look at include/linux/tty.h at the screen_info structure. I believe that is where all of that information is passed. >> So you can try with the --real-mode option and you have >> a chance of the code working. Or you can figure out which >> information video.S passes to the kernel figure out how >> to get that same information out of a running kernel >> and then /sbin/kexec can be tweaked to pass the current >> video mode. Changing frame buffer modes shouldn't work >> but you should at least be able to preserve the existing >> ones. > I tried to pass --real-mode flag to kexec but my virtual machine doesn't like > it. When I launch kexec -e, it tells me: "A strange behaviour occourred which > crashed virtual machine". Cool. I haven't used that code in a long time but it is pretty trivial code to switches to real mode so I don't really doubt it :) > I'll dig source code ASAP to figure out this matter. > Meanwhile I'm going to follow your advice to inspect video.S in order to track > down something useful. Sounds good. Eric - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
