From: David Mosberger <davidm@napali.hpl.hp.com>
To: linux-ia64@vger.kernel.org
Subject: RE: [Linux-ia64] mmap crashes system after mapping PCI device into user space and reading and writin
Date: Wed, 09 Apr 2003 17:45:45 +0000 [thread overview]
Message-ID: <marc-linux-ia64-105590723705449@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-105590723705441@msgid-missing>
>>>>> On Wed, 9 Apr 2003 01:36:33 -0400, "Mike Fox" <mfox@annapmicro.com> said:
Mike> In the driver I am basically doing this in my mmap entry point:
Mike> vma-> vm_page_prot = pgprot_noncached(vma->vm_page_prot);
Mike> vma-> vm_flags |= VM_IO;
Mike> /*
Mike> * this maps the physical memory to the user
Mike> */
Mike> if (remap_page_range(vma->vm_start, offset, vma->vm_end-vma->vm_start, vma->vm_page_prot))
Mike> {
Mike> return -EAGAIN;
Mike> }
This is basically what drivers/char/mem.c is doing, so there is
nothing obviously wrong here.
--david
next prev parent reply other threads:[~2003-04-09 17:45 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 ` [Linux-ia64] mmap crashes system after mapping PCI device into user Christian Hinkelbein
2003-04-09 17:33 ` [Linux-ia64] mmap crashes system after mapping PCI device into user space and reading and writin David Mosberger
2003-04-09 17:45 ` David Mosberger [this message]
2003-04-09 23:53 ` Mike Fox
2003-04-10 0:44 ` David Mosberger
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