> -----Original Message----- > From: Russell King - ARM Linux [mailto:linux@xxxxxxxxxxxxxxxx] > Sent: Friday, January 03, 2014 9:47 AM > To: Gioh Kim > Cc: 'Baruch Siach'; linux-mm@xxxxxxxxx; 'linux-arm-kernel'; 'HyoJun Im' > Subject: Re: ARM: mm: Could I change module space size or place modules in > vmalloc area? > > On Fri, Jan 03, 2014 at 09:39:31AM +0900, Gioh Kim wrote: > > Thank you for reply. > > > > > -----Original Message----- > > > From: Baruch Siach [mailto:baruch@xxxxxxxxxx] > > > Sent: Thursday, January 02, 2014 7:14 PM > > > To: Gioh Kim > > > Cc: Russell King; linux-mm@xxxxxxxxx; linux-arm-kernel; HyoJun Im > > > Subject: Re: ARM: mm: Could I change module space size or place > > > modules in vmalloc area? > > > > > > Hi Gioh, > > > > > > On Thu, Jan 02, 2014 at 07:04:13PM +0900, Gioh Kim wrote: > > > > I run out of module space because I have several big driver modules. > > > > I know I can strip the modules to decrease size but I need debug > > > > info > > > now. > > > > > > Are you sure you need the debug info in kernel memory? I don't think > > > the kernel is actually able to parse DWARF. You can load stripped > > > binaries into the kernel, and still use the debug info with whatever > tool you have. > > > > I agree you but driver developers of another team don't agree. > > I don't know why but they say they will strip drivers later :-( So I > > need to increase modules space size. > > ARM can only branch relatively within +/- 32MB. Hence, with a module > space of 16MB, modules can reach up to a maximum 16MB into the direct- > mapped kernel image. As module space increases in size, so that figure > decreases. So, if module space were to be 40MB, the maximum size of the > kernel binary would be 8MB. > > You want to look at a line similar to this: > > .text : 0xc0008000 - 0xc031eda0 (3164 kB) > > Also, note this: > > modules : 0xbf000000 - 0xc0000000 ( 16 MB) > > If the difference between the lowest module address (0xbf000000) and the > highest of .text is greater than 32MB, it's impossible to load modules - > they will fail to link. > > What is the size of your kernel text? (show us the line(s) like the above.) My kernel size is about 8MB as below. [ 0.000000] modules : 0x7f000000 - 0x80000000 ( 16 MB) [ 0.000000] .text : 0x80008000 - 0x8085d2b0 (8533 kB) I think I can increase the modules space size into 20MB. Thanks for your reply. > > Thanks. > > -- > FTTC broadband for 0.8mile line: 5.8Mbps down 500kbps up. Estimation in > database were 13.1 to 19Mbit for a good line, about 7.5+ for a bad. > Estimate before purchase was "up to 13.2Mbit". -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>