I see. Thanks, guys.
-------- Original Message --------
Subject: Re: PAGE_SIZE on 64bit and 32bit machines
From: Kyle McMartin <[email protected]>
To: Yoav Artzi <[email protected]>
Date: Monday, November 12, 2007 6:11:06 PM
On Mon, Nov 12, 2007 at 05:58:08PM +0200, Yoav Artzi wrote:
Looking at the source, I see:
#ifdef CONFIG_4KSTACKS
#define THREAD_SIZE (4096)
#else
#define THREAD_SIZE (8192)
#endif
So if I configure the option CONFIG_4KSTACK, I will get a 4KB kernel
stack. Am I missing something here?
This is only on i386 (32-bit x86...)[1] On x86-64, we have 8K kernel
stacks (THREAD_ORDER 1), and 16K irqstacks (IRQSTACK_ORDER 2).
The relevant defines are found in <asm-x86/page_64.h> for x86_64, and
<asm-x86/thread_info_32.h> for i386.
Cheers,
Kyle
1. That is, stack size is only configurable on 32bit.
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