lkml.org 
[lkml]   [2007]   [Jun]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [PATCH] x86-64: disable the GART before allocate aperture
    On 6/22/07, Eric W. Biederman <ebiederm@xmission.com> wrote:
    > Alan Cox <alan@lxorguk.ukuu.org.uk> writes:
    >
    > For a normal kexec we should shut everything down before the kernel
    > transition so it should not be an issue.
    >
    > YH do you think you can look at simply reserving a portion of the iommu?
    > And having the kexec on panic kernel use the reserved portion?
    >
    two copy region: one for first kernel, and one for second kernel? it
    should work.
    first kernel is using [64M, 128M), and the second will get assign to
    [64M,128M) again.
    when it try to memset to clear that region it will cause restart.
    in that region, only first 256K can not touched, even read. rest could
    be accessed.

    YH
    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2007-06-23 00:01    [W:0.021 / U:59.996 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site