memory for crash kernel in redhat

what is the use of memory for crash kernel in redhat?
rahuldevsinghAsked:
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DIPRAJCommented:
ajay_mhasalCommented:
Hi,

When the system kernel boots, it reserves a small section of memory for the dump-capture kernel. This ensures that ongoing Direct Memory Access (DMA) from the system kernel does not corrupt the dump-capture kernel. The kexec -p command loads the dump-capture kernel into this reserved
memory.

For more details on Kdump pl. visit http://www.mjmwired.net/kernel/Documentation/kdump/


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rahuldevsinghAuthor Commented:
it was ok
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