From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Hideki Yamamoto" Date: Mon, 12 Nov 2001 08:15:53 +0000 Subject: [Linux-ia64] Pagesize is different between IA32 and IA64 Message-Id: List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org Hello all. If this problem has already known, I am sorry. I am investigating the problem that calloc returns no cleared area. It was made on IA32 system and executes on IA64. I think calloc expects to clear the memories sbrk returned. But When the program made on IA32 is executing on IA64 system, sbrk sometimes returns no cleared area. Because the Kernel on IA64 alignes the memories 16K bytes. However, when the progmam made on IA32 is executing on IA64, the function __getpagesize returns 4Kbytes. At this case, if the memories that calloc requests to return sbrk(-xxx) is smaller than 16Kbytes, the kernel do not unmap this memory. (I think that the time that the memories clears 0 by the kernel is when the kernel maps memories by the signal) How do you think? -- Regards, Hideki Yamamoto (V).v.(V) # Empowered by Innovation