Re: [PATCH] kdump, oldmem: support mmap on /dev/oldmem

2013-02-11 Thread Vivek Goyal
On Fri, Feb 08, 2013 at 12:33:49AM +, Hatayama, Daisuke wrote: [..] > Also, remap_pfn_range is the function exported into kernel modules, so > changing the third argument means changing ABI. Introducing a kind of > remap_pfn_range_64 is a good idea? if there's someone needing the feature on

RE: [PATCH] kdump, oldmem: support mmap on /dev/oldmem

2013-02-07 Thread Hatayama, Daisuke
From: Vivek Goyal > > > Subject: Re: [PATCH] kdump, oldmem: support mmap on /dev/oldmem > > > Date: Tue, 5 Feb 2013 10:12:56 -0500 > > > > > > > On Mon, Feb 04, 2013 at 04:59:35AM +, Hatayama, Daisuke wrote: > > > > > > > [..] > &g

RE: [PATCH] kdump, oldmem: support mmap on /dev/oldmem

2013-02-07 Thread Hatayama, Daisuke
> From: Vivek Goyal [mailto:vgo...@redhat.com] > Sent: Friday, February 08, 2013 12:06 AM > On Wed, Feb 06, 2013 at 07:24:46AM +, Hatayama, Daisuke wrote: > > From: Vivek Goyal > > Subject: Re: [PATCH] kdump, oldmem: support mmap on /dev/oldmem > > Date: Tue

Re: [PATCH] kdump, oldmem: support mmap on /dev/oldmem

2013-02-07 Thread Vivek Goyal
On Wed, Feb 06, 2013 at 07:24:46AM +, Hatayama, Daisuke wrote: > From: Vivek Goyal > Subject: Re: [PATCH] kdump, oldmem: support mmap on /dev/oldmem > Date: Tue, 5 Feb 2013 10:12:56 -0500 > > > On Mon, Feb 04, 2013 at 04:59:35AM +, Hatayama, Daisuke wrote: > >

RE: [PATCH] kdump, oldmem: support mmap on /dev/oldmem

2013-02-05 Thread Hatayama, Daisuke
From: Vivek Goyal Subject: Re: [PATCH] kdump, oldmem: support mmap on /dev/oldmem Date: Tue, 5 Feb 2013 10:12:56 -0500 > On Mon, Feb 04, 2013 at 04:59:35AM +, Hatayama, Daisuke wrote: > [..] >> For design decision, I didn't support mmap() on /proc/vmcore because >>

Re: [PATCH] kdump, oldmem: support mmap on /dev/oldmem

2013-02-05 Thread Vivek Goyal
On Mon, Feb 04, 2013 at 04:59:35AM +, Hatayama, Daisuke wrote: > Support mmap() on /dev/oldmem to improve performance of reading > /proc/vmcore. Currently, read to /proc/vmcore is done by read_oldmem() > that uses ioremap and iounmap per a single page; for example, if > memory is 1GB, ioremap/i

[PATCH] kdump, oldmem: support mmap on /dev/oldmem

2013-02-03 Thread Hatayama, Daisuke
d built on x86_64. Thanks. HATAYAMA, Daisuke >From cf89aace87c8e7192909eb35334a139143a806e8 Mon Sep 17 00:00:00 2001 From: HATAYAMA Daisuke Date: Wed, 30 Jan 2013 13:02:02 +0900 Subject: [PATCH] kdump, oldmem: support mmap on /dev/oldmem Support mmap() on /dev/oldmem to improve performance of reading /proc/vmcore. Currently,