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Date: Fri, 16 Jan 2009 22:42:32 -0800 (PST) From: sidc7 <siddhartha.chhabra@...il.com> To: linux-kernel@...r.kernel.org Subject: Re: Kernel vs user memory One last question, which one of the two lowmem or highmem kernel is most commonly used on contemporary linux boxes. I am guessing highmem kernel ? Thanks for the quick replies, helped a lot H. Peter Anvin wrote: > > sidc7 wrote: >> If I am not mistaken, Linux kernel is a high memory kernel, hence for >> Linux >> kernel, nothing will be mapped to the kernel space, other than the memory >> beyond 896MB which is the kernel's virtual address space. Am I right on >> this? > > It's a compilation option, and depends on the architecture. What you > described is true for an i386 kernel compiled as a highmem kernel. On > the other hand, a 64 bit kernel is *never* highmem. > > -hpa > > -- > H. Peter Anvin, Intel Open Source Technology Center > I work for Intel. I don't speak on their behalf. > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@...r.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > > -- View this message in context: http://www.nabble.com/Kernel-vs-user-memory-tp21512362p21513643.html Sent from the linux-kernel mailing list archive at Nabble.com. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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