From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vasiliy G Tolstov Subject: Re: 2.6.32 pv_ops and sparse/flat memory Date: Tue, 23 Nov 2010 22:01:21 +0300 Message-ID: <1290538881.27157.20.camel@mobile> References: <1290174257.16244.44.camel@vase> <20101122100915.GA19265@router-fw-old.local.net-space.pl> <1290421350.17994.106.camel@vase> <20101123180649.GA5576@router-fw-old.local.net-space.pl> Reply-To: v.tolstov@selfip.ru Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20101123180649.GA5576@router-fw-old.local.net-space.pl> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Daniel Kiper Cc: "xen-devel@lists.xensource.com" List-Id: xen-devel@lists.xenproject.org On Tue, 2010-11-23 at 19:06 +0100, Daniel Kiper wrote: > Hello, > > On Mon, Nov 22, 2010 at 01:22:30PM +0300, Vasiliy G Tolstov wrote: > > On Mon, 2010-11-22 at 11:09 +0100, Daniel Kiper wrote: > > > Hello, > > > > > > On Fri, Nov 19, 2010 at 04:44:17PM +0300, Vasiliy G Tolstov wrote: > > > > Hello. I'm try to compile 32 bit pae kernel from xen git repo. If i > > > > check sparse memory - i get error > > > > > > Please send me full address of Xen repository which you are using > > > its head > > > > git clone git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen > > git checkout -b xen/stable-2.6.32.x origin/xen/stable-2.6.32.x > > > > > and contents of your config file. > > in attach, modify flat memory to sparse mem and compile under i686 arch > > As I find out it is normal behavior when CONFIG_XEN is enabled in this > kernel version. Unlike mainline kernel this version establish new PG_foreign > page flag which with CONFIG_SPARSEMEM_MANUAL and CONFIG_HIGHMEM64G > enabled overflow page flags field which is - surprise - 32-bit long in > i386 (for more details read include/linux/page-flags.h file). > > Solution: > - enable CONFIG_HIGHMEM4G, > - disable CONFIG_XEN (I am not sure that it > is good one for you :-))) ). > > Daniel Thank You Daniel! But i need to able to run vm with 56Gb memory size and highmem 4g not usable =). My question is - can i use memory about 56Gb and use memory hotplug, what you write? (using flat memory config)