From: Fawad Lateef <fawadlateef@gmail.com>
To: linux-kernel@vger.kernel.org
Cc: nhorman@redhat.com
Subject: Highmemory Problem with RHEL3 .... 2.4.21-5.ELsmp
Date: Mon, 8 Aug 2005 08:50:54 +0500 [thread overview]
Message-ID: <1e62d137050807205047daf9e0@mail.gmail.com> (raw)
Hello,
I m facing a problem in RHEL3 (2.4.21-5.ELsmp) kernel while using
kmap_atomic on the pages reserved at the boot time !!!!
At the boot time I reserved pages above 2GB for later use by my module
..... And when I was using those reserved pages through kmap_atomic
system hangs; although kmap_atomic successfully returns me the virtual
address but when I use that virtual address like in memcpy the system
hangs .....
I m unable to findout why it is happening in RHEL3 kernel !!!! Plz
help me in this regard ....
--
Fawad Lateef
P.S.
My memory reservation and later using that memory through kmap_atomic
works well on the kernels other than RHEL3 2.4.21-e.ELsmp
.............. the page reservation was done in the
arch/i386/mm/init.c file in function one_highpage_init ...... I have
Machine with 16GB RAM and 2 - Xeon 2.4GHz Processors .....
next reply other threads:[~2005-08-08 3:50 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-08 3:50 Fawad Lateef [this message]
2005-08-08 4:34 ` Highmemory Problem with RHEL3 .... 2.4.21-5.ELsmp Nish Aravamudan
2005-08-08 5:19 ` Zachary Amsden
2005-08-08 7:32 ` Fawad Lateef
2005-08-08 7:42 ` Zachary Amsden
2005-08-08 8:17 ` Arjan van de Ven
2005-08-08 17:24 ` Fawad Lateef
2005-08-08 17:44 ` Arjan van de Ven
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