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>hi all.. >i have been working on char device driver. >i need a good document on advance char device driver..? > From: kernelnewbies-request@xxxxxxxxxxxxxxxxx > Subject: Kernelnewbies Digest, Vol 5, Issue 20 > To: kernelnewbies@xxxxxxxxxxxxxxxxx > Date: Thu, 14 Apr 2011 12:00:01 -0400 > > Send Kernelnewbies mailing list submissions to > kernelnewbies@xxxxxxxxxxxxxxxxx > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > or, via email, send a message with subject or body 'help' to > kernelnewbies-request@xxxxxxxxxxxxxxxxx > > You can reach the person managing the list at > kernelnewbies-owner@xxxxxxxxxxxxxxxxx > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Kernelnewbies digest..." > > > Today's Topics: > > 1. Re: Missing 1GB RAM, where is it? (Andrzej Kardas) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Thu, 14 Apr 2011 17:43:05 +0200 > From: Andrzej Kardas <andrzej-kardas@xxxxx> > Subject: Re: Missing 1GB RAM, where is it? > To: Adrian Cornish <adrianc@xxxxxxx> > Cc: kernelnewbies@xxxxxxxxxxxxxxxxx > Message-ID: <4DA71609.5070800@xxxxx> > Content-Type: text/plain; charset="iso-8859-1" > > > > On 14.04.2011 17:09, Adrian Cornish wrote: > > Just a thought - lower end graphic cards use system RAM as their own > > dont they > You right, devices like graphic card, ethernet cards etc. are mapped > into memory, what cause some amount RAM is not available for system use. > But as i've wrote before, i'm wondering why addresses in /proc/iomem > (where the map of memory is) are not contiguous. I think, there should > be info about what region of memory is mapped where (BIOS, PCI bus, for > system use etc)*for whole 4GB *(Am I right??) address space (for 32bit > OS). Instead of that, there are small "holes" in addresses and the total > size of this holes (in my case) is about 400MB. So i wonder where that > memory is. > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: http://lists.kernelnewbies.org/pipermail/kernelnewbies/attachments/20110414/c0b6b2f7/attachment-0001.html > > ------------------------------ > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies@xxxxxxxxxxxxxxxxx > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > > > End of Kernelnewbies Digest, Vol 5, Issue 20 > ******************************************** |
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