>> Just an update (thanks to Fernando in pointing this out) >> 0x87000000, 0x600000, fails with same error >> 0x88000000, 0x600000, fails with same error >Wrong attempt!! >Should have tried: >0x87100000, 0x600000 - this worked >> 0x87000000, 0x700000 - went thru 300 odd iterations without error!! >This means that if I keep end address constant, it is fine.. with this >hypothesis, I tried >0x87200000, 0x500000 - this also worked However 0x87100000, 0x500000 also works that is the same end address than 0x87000000, 0x600000. so maybe the hypothesis is no right. Regards, Fernando. -----Original Message----- From: Menon, Nishanth Sent: Thursday, March 12, 2009 10:58 AM To: Menon, Nishanth; Guzman Lugo, Fernando; linux-omap@xxxxxxxxxxxxxxx Cc: Kanigeri, Hari; Woodruff, Richard; Lakhani, Amish; Gupta, Ramesh; Ameya Palande Subject: RE: ioremap bug? (was RE: DSPBRIDGE: segmentation fault after reloading dspbridge several times due to a memory leak.) > -----Original Message----- > From: Menon, Nishanth > Sent: Thursday, March 12, 2009 6:53 PM > To: Menon, Nishanth; Guzman Lugo, Fernando; linux-omap@xxxxxxxxxxxxxxx > Cc: Kanigeri, Hari; Woodruff, Richard; Lakhani, Amish; Gupta, Ramesh; > Ameya Palande > Subject: RE: ioremap bug? (was RE: DSPBRIDGE: segmentation fault after > reloading dspbridge several times due to a memory leak.) > > > > -----Original Message----- > > From: linux-omap-owner@xxxxxxxxxxxxxxx [mailto:linux-omap- > > owner@xxxxxxxxxxxxxxx] On Behalf Of Menon, Nishanth > > Sent: Thursday, March 12, 2009 6:40 PM > > To: Guzman Lugo, Fernando; linux-omap@xxxxxxxxxxxxxxx > > Cc: Kanigeri, Hari; Woodruff, Richard; Lakhani, Amish; Gupta, Ramesh; > > Ameya Palande > > Subject: ioremap bug? (was RE: DSPBRIDGE: segmentation fault after > > reloading dspbridge several times due to a memory leak.) > > > console output where you can see the address increasing. > > > > I duplicated this with the following dummy driver which ioremaps as per > > the same allocations that the bridge driver would have done: > > > > #include <linux/kernel.h> > > #include <linux/module.h> > > #include <linux/slab.h> > > #include <linux/mm.h> > > #include <linux/dma-mapping.h> > > > > #define BASE 0x87000000 > > #define SIZE 0x600000 > > > Just an update (thanks to Fernando in pointing this out) > 0x87000000, 0x600000, fails with same error > 0x88000000, 0x600000, fails with same error Wrong attempt!! Should have tried: 0x87100000, 0x600000 - this worked > 0x87000000, 0x700000 - went thru 300 odd iterations without error!! This means that if I keep end address constant, it is fine.. with this hypothesis, I tried 0x87200000, 0x500000 - this also worked Implying the start address and size of the first allocation in my dummy driver did not have a factor in the test failure, but just the end address of the ioremap! Regards, Nishanth Menon -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
