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From: Nitin Gupta <nitingupta.mail@gmail.com>
To: linux-mm@kvack.org
Subject: a basic question
Date: Sat, 22 Oct 2005 21:39:43 +0530	[thread overview]
Message-ID: <f68e01850510220909wad86b06wadc620fb5f807b5d@mail.gmail.com> (raw)

Hi,
    These are the questions that have been troubling me for long time.
I'm beginning to work on a vmm project, so kindly spare a min to
answer these:

- How does processor know that 3GB-4GB is mapped linearly on first 1GB
of memory. Is there a pagetable for this segment mapping it linearly?

- Why isn't it like this  - userspace tasks have 4GB virtual address
space and for kernel also a 4GB virtual address space that is linearly
mapped to fist 4GB of memory.


Thanks

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             reply	other threads:[~2005-10-22 16:09 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-10-22 16:09 Nitin Gupta [this message]
2005-10-22 18:11 ` Rik van Riel

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