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    SubjectRe: [PATCH] drm/i915: Record error batch buffers using iomem
    Hello Chris,

    On Wed, May 12, 2010 at 1:23 AM, Chris Wilson <> wrote:
    > On Wed, 12 May 2010 01:08:23 +0530, Jaswinder Singh Rajput <> wrote:
    >> Hello Chris and Andrew,
    >> I did further testing and noticed that this patch fixes the boot
    >> errors and warnings and I get the XWindows.
    >> But XWindows freezes after some time.
    > The BUG you were hitting before is on the error collection path which
    > presumably is still being triggered during boot by a GPU error.
    > Can you check to see if /sys/kernel/debug/dri/0/i915_error_state has
    > recorded anything? And if not, wait until it freezes and then please file
    > a bug report at with the i915_error_state, Xorg.0.log
    > and dmesg.

    With this patch after XWindows freezes, I get :

    [ 70.433064] wlan0: no IPv6 routers present
    [ 227.490064] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer
    elapsed... GPU hung
    [ 227.490098] ------------[ cut here ]------------
    [ 227.490124] WARNING: at mm/highmem.c:453 debug_kmap_atomic+0xa9/0x11e()
    [ 227.490135] Hardware name: Aspire one
    [ 227.490143] Modules linked in: nf_conntrack_ftp ath9k ath9k_common
    ath9k_hw battery [last unloaded: scsi_wait_scan]
    [ 227.490183] Pid: 0, comm: swapper Not tainted 2.6.34-rc7-netbook #8
    [ 227.490193] Call Trace:
    [ 227.490214] [<c1030ecb>] warn_slowpath_common+0x65/0x7c

    freeze dmesg :

    freeze Xorg.log :

    So it means this patches shifted the BUG and warning messages after
    some time. So I can only work on XWindows for few minutes with this
    Andrew patch is in linus git tree. Can you please update your patch
    above Andrew patch. So that I can do further testing.

    Jaswinder Singh.

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