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    SubjectRe: [v3][PATCH 7/8] book3e/kexec/kdump: redefine VIRT_PHYS_OFFSET
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    On Tue, 2013-07-09 at 16:03 +0800, Tiejun Chen wrote:
    > Book3e is always aligned 1GB to create TLB so we should
    > use (KERNELBASE - MEMORY_START) as VIRT_PHYS_OFFSET to
    > get __pa/__va properly while boot kdump.

    What if MEMORY_START - PHYSICAL_START >= 1 GiB?

    What about the comment that says we can't use MEMORY_START before
    parsing the device tree?

    -Scott




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