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Message-ID: <47387DC7.9090001@checkpoint.com> Date: Mon, 12 Nov 2007 18:22:31 +0200 From: Yoav Artzi <yoavar@...ckpoint.com> To: Kyle McMartin <kyle@...artin.ca> CC: Adrian Bunk <bunk@...nel.org>, Jiri Slaby <jirislaby@...il.com>, linux-kernel@...r.kernel.org Subject: Re: PAGE_SIZE on 64bit and 32bit machines I see. Thanks, guys. -------- Original Message -------- Subject: Re: PAGE_SIZE on 64bit and 32bit machines From: Kyle McMartin <kyle@...artin.ca> To: Yoav Artzi <yoavar@...ckpoint.com> 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. > > Scanned by Check Point VPN-1 UTM NGX R65 with Messaging Security > > - 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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