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List:       linux-kernel
Subject:    Re: 2.6.8.1-mm2 breaks vmware
From:       Andrew Morton <akpm () osdl ! org>
Date:       2004-08-20 18:45:18
Message-ID: 20040820114518.49a65b69.akpm () osdl ! org
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Ville Herva <vherva@viasys.com> wrote:
> 
> On Fri, Aug 20, 2004 at 05:43:04PM +0300, you [Ville Herva] wrote:
> > On Fri, Aug 20, 2004 at 04:18:25PM +0300, you [Ville Herva] wrote:
> > > 
> > > I just noticed I had missed get_user_pages-handle-VM_IO.patch - I'll try
> > > backing that out first. I'll report back if I find anything interesting 
> > > with different patch mixtures.
> > 
> > Well, I just tried 2.6.8.1-mm2 minus get_user_pages-handle-VM_IO.patch but
> > that didn't help with the "cannot allocate memory" problem. Curiously, I
> > didn't get the "get_user_pages() returns -EFAULT" warning with this kernel.
> > 
> > I just put get_user_pages-handle-VM_IO.patch back and reverted
> > dev-mem-restriction-patch.patch - I'll report back when it has compiled. 
> 
> Ok, 2.6.8.1-mm2 minus dev-mem-restriction-patch.patch fixes the "cannot
> allocate memory" problem. 

Thanks for working that out.

Strange.  I'd have assumed that the Fedora kernels include that patch.

> With this kernel I still get the 
> 
> --8<-----------------------------------------------------------------------
> vmmon: Your kernel is br0ken. get_user_pages(current, current->mm, b7dd1000, 1, 1, \
>                 0, &page, NULL) returned -14.
> vmmon: I'll try accessing page tables directly, but you should know that your
> vmmon: kernel is br0ken and you should uninstall all additional patches you vmmon: \
>                 have installed!
> vmmon: FYI, copy_from_user(b7dd1000) returns 0 (if not 0 maybe your kernel is not \
>                 br0ken)
> --8<-----------------------------------------------------------------------
> 
> warning, but vmware appears to work now (well apart from altgr not working,
> but that has been broken since 2.4 -> 2.6 transition.)
> 
> I'm still not 100% which of the patches causes that get_user_pages()
> warning.

If you could work that out sometime, it would help.
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