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    SubjectRe: [stable] [PATCH 00/12] xen/paravirt_ops patches for 2.6.24
    On Tue, 2007-10-16 at 00:03 +0200, Andi Kleen wrote:
    > > Subject: [PATCH 12/12] xfs: eagerly remove vmap mappings to avoid
    > > upsetting Xen
    > This should be probably done unconditionally because it's a undefined
    > dangerous condition everywhere.

    Should be done unconditionally. One could remap the underlying physical
    space to include an MMIO region, and speculative reads from the
    cacheable virtual mapping of that region could move the robot arm,
    destroying the world.


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