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From:   Pankaj Suryawanshi <pankaj.suryawanshi@einfochips.com>
To:     "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "linux-mm@kvack.org" <linux-mm@kvack.org>
Subject: Basics : Memory Configuration
Thread-Topic: Basics : Memory Configuration
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Date:   Tue, 9 Apr 2019 06:55:34 +0000
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Hello,

I am confuse about memory configuration and I have below questions

1. if 32-bit os maximum virtual address is 4GB, When i have 4 gb of ram for=
 32-bit os, What about the virtual memory size ? is it required virtual mem=
ory(disk space) or we can directly use physical memory ?

2. In 32-bit os 12 bits are offset because page size=3D4k i.e 2^12 and 2^20=
 for page addresses
   What about 64-bit os, What is offset size ? What is page size ? How it c=
alculated.

3. What is PAE? If enabled how to decide size of PAE, what is maximum and m=
inimum size of extended memory.

Regards,
Pankaj
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