On 6/22/07, Eric W. Biederman <[email protected]> wrote:
Alan Cox <[email protected]> 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
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