Re: 6.0-current panic: loading radeon module

From: Eric Anholt (eta_at_lclark.edu)
Date: 06/27/05

  • Next message: Mike Silbersack: "mbuf trash panic turned into a printf for now" 
    To: Martin Cracauer <cracauer@cons.org>
Date: Sun, 26 Jun 2005 16:42:25 -0700

    On Sun, 2005-06-26 at 19:19 -0400, Martin Cracauer wrote:
    > > OK, one more try, for everyone who's been having hangs/reboots on X
    > > startup since April. Attached is a patch that will hopefully kill the
    > > problem off.
    >
    > The candidate gets 100 points. It fixes the panic and hardware 3D
    > worked for a few tests. No other side effects observed. Thanks so
    > much!
    >
    > Out of curiosity, why does a 32 MB VRAM card try to map 128 MB?

    Do you only had 32MB? If so, oops on my part. Every other case of this
    I had seen was 128MB, so I was just assuming. Basically the issue
    (afaik) is that you're running out of KVA because framebuffers are large
    and KVA isn't all that huge. pmap_mapdev was not designed to handle
    failure to allocate memory, so it just paniced instead of returning NULL
    (which wouldn't have helped us anyway, due to other issues). 

    -- 
Eric Anholt                                     eta@lclark.edu
http://people.freebsd.org/~anholt/              anholt@FreeBSD.org
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  • Next message: Mike Silbersack: "mbuf trash panic turned into a printf for now"

    Relevant Pages

    • Re: 6.0-current panic: loading radeon module
      ... Martin Cracauer wrote: ... >>startup since April. ... Attached is a patch that will hopefully kill the ...
      (freebsd-current)
    • Re: 6.0-current panic: loading radeon module
      ... :>> OK, one more try, for everyone who's been having hangs/reboots on X ... :>> startup since April. ... is that you're running out of KVA because framebuffers are large ... and KVA isn't all that huge. ...
      (freebsd-current)