Re: Understanding the mapping of physical memory to kernel address space

2015-03-15 Thread Sunny Shah
map a RAM window of size 896 MB into the kernel linear address space." > >> > > >> > Why is there a need to map the whole RAM into the kernel space (the > usage of > >> > the word "entirely") ? Shouldn't it be only LOW_MEM ? Or am I > confusing

Re: Understanding the mapping of physical memory to kernel address space

2015-03-15 Thread Arun KS
only LOW_MEM ? Or am I confusing the >> > two things here ? >> > >> > >> > I believe all doubts are pointing to the concepts of LOW_MEM and HIGH_MEM, >> > but I'm still not being able to wrap my head around them. >> > >> > Thanks, >

Re: Understanding the mapping of physical memory to kernel address space

2015-03-15 Thread Sunny Shah
> > > On Thu, Mar 12, 2015 at 11:49 PM, Jeff Haran > wrote: > >> > >> -Original Message- > >> From: kernelnewbies-boun...@kernelnewbies.org > >> [mailto:kernelnewbies-boun...@kernelnewbies.org] On Behalf Of Arun KS > >> Sent: Thursday,

Re: Understanding the mapping of physical memory to kernel address space

2015-03-15 Thread Arun KS
ks, > Sunny > > On Thu, Mar 12, 2015 at 11:49 PM, Jeff Haran wrote: >> >> -Original Message- >> From: kernelnewbies-boun...@kernelnewbies.org >> [mailto:kernelnewbies-boun...@kernelnewbies.org] On Behalf Of Arun KS >> Sent: Thursday, March 12, 2015

Re: Understanding the mapping of physical memory to kernel address space

2015-03-14 Thread Sunny Shah
ch 12, 2015 11:03 AM > To: Sunny Shah > Cc: kernelnewbies > Subject: Re: Understanding the mapping of physical memory to kernel > address space > > Hello Sunny, > > On Thu, Mar 12, 2015 at 10:32 PM, Sunny Shah > wrote: > > Hello, > > > > This is my firs

RE: Understanding the mapping of physical memory to kernel address space

2015-03-12 Thread Jeff Haran
-Original Message- From: kernelnewbies-boun...@kernelnewbies.org [mailto:kernelnewbies-boun...@kernelnewbies.org] On Behalf Of Arun KS Sent: Thursday, March 12, 2015 11:03 AM To: Sunny Shah Cc: kernelnewbies Subject: Re: Understanding the mapping of physical memory to kernel address

Re: Understanding the mapping of physical memory to kernel address space

2015-03-12 Thread Arun KS
Hello Sunny, On Thu, Mar 12, 2015 at 10:32 PM, Sunny Shah wrote: > Hello, > > This is my first mail on this list, so please let me know if I'm erring. > > I'm reading Bovet and Cesati's "Understanding the Linux Kernel", > specifically the chapter "Memory Addressing", sub-section "Kernel Page > Ta

Re: Understanding the mapping of physical memory to kernel address space

2015-03-12 Thread Arshad Hussain
On 12-Mar-2015, at 10:02 am, Sunny Shah wrote: > Hello, > > This is my first mail on this list, so please let me know if I'm erring. > > I'm reading Bovet and Cesati's "Understanding the Linux Kernel", specifically > the chapter "Memory Addressing", sub-section "Kernel Page Tables". Here the

Understanding the mapping of physical memory to kernel address space

2015-03-12 Thread Sunny Shah
Hello, This is my first mail on this list, so please let me know if I'm erring. I'm reading Bovet and Cesati's "Understanding the Linux Kernel", specifically the chapter "Memory Addressing", sub-section "Kernel Page Tables". Here they describe how Linux initializes its page tables for various RAM