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From: Christian Hinkelbein <hinkelbein@ti.uni-mannheim.de>
To: linux-ia64@vger.kernel.org
Subject: Re: [Linux-ia64] mmap crashes system after mapping PCI device into user
Date: Wed, 09 Apr 2003 08:57:12 +0000	[thread overview]
Message-ID: <marc-linux-ia64-105590723705447@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-105590723705441@msgid-missing>

Hi,

Mike Fox schrieb:
> 
> 
> In the driver I am basically doing this in my mmap entry point:
> 
>   vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
>   vma->vm_flags |= VM_IO;

i know this is ugly stuff, but ...
maybe you want to try this instead of the above:

#if defined(__ia64__)
	vmap->vm_flags |= (VM_SHM | VM_LOCKED | VM_IO);
	vmap->vm_flags &= ~(VM_SHARED | VM_MAYSHARE);
	vmap->vm_page_prot = __pgprot(pgprot_val(vmap->vm_page_prot)& ~_PAGE_AR_RW);
#endif

> 
> Thanks,
> Mike.
> 

 christian


  parent reply	other threads:[~2003-04-09  8:57 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-04-08 21:59 [Linux-ia64] mmap crashes system after mapping PCI device into user space and reading and writing Mike Fox
2003-04-09  0:42 ` [Linux-ia64] mmap crashes system after mapping PCI device into user space and reading and writin Grant Grundler
2003-04-09  5:36 ` Mike Fox
2003-04-09  6:20 ` Grant Grundler
2003-04-09  8:57 ` Christian Hinkelbein [this message]
2003-04-09 17:33 ` David Mosberger
2003-04-09 17:45 ` David Mosberger
2003-04-09 23:53 ` Mike Fox
2003-04-10  0:44 ` David Mosberger

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