Hi, > -----Original Message----- > From: Valdis.Kletnieks@xxxxxx [mailto:Valdis.Kletnieks@xxxxxx] > Sent: Tuesday, September 09, 2014 7:28 AM > To: Matthias Brugger > Cc: Rajat Jain; linux-newbie@xxxxxxxxxxxxxxx; kernelnewbies > Subject: Re: x86_64_defconfig and i386_defconfig: What is the difference? > > On Tue, 09 Sep 2014 16:06:07 +0200, Matthias Brugger said: > > > > Can someone tell me if the i386 one is to be used when we want to > > > build for a 32bit machine and the x86_64 is to be used for 64 bit machine? > > > > You can build the kernel with any architecture for any architecture. > > This is called cross-compiling. The homepage [0] should explain you > > how to do that. > > Right, but you still need to use a .config appropriate for the target machine, > which is what I think Rajat was asking about. Right. I'm trying to generate x86 images for someone else to test, who's going to test it on a standard / generic x86 machine: https://lkml.org/lkml/2014/9/9/35 What I was not sure is that which config should I use to generate an image for a "standard x86 machine". Now I do understand (I provided him 2 images - 1 for the 32 bit (using i386_defconfig) and another for 64 bit (using x86_64_defconfig). Thanks, Rajat > > A defconfig is usually only known verified to boot on a few (possibly one) > examples of that architecture hardware. For embedded ARM, it may be one > specific development board or hardware device. For x86, I think they try to > keep it "will probably kind of sort of boot on generic PC hardware with a > common distro, but anything fancylike a webcam or better graphics than "vga > tty emulation" may not work". > > A defconfig is pretty much just a proof of concept starting point for an actual > working config for a given hardware system. -- To unsubscribe from this list: send the line "unsubscribe linux-newbie" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.linux-learn.org/faqs
