Re: [Crash-utility] Crash physical search on live session not recommended :-)
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I'm guessing that's bad :-) I'll implement the rejector
code in the
physical search, and see if I can avoid a trip to the machine room.
Are your systems avoiding this because of a /dev/crash vs /dev/mem
difference?
Maybe so -- at least on the architectures that use /dev/crash,
i.e., those that impose CONFIG_STRICT_DEVMEM, because the RHEL
/dev/crash driver requires the pfn to get past page_is_ram().
But because page_is_ram() is not exported on non-RHEL kernels, the
page_is_ram() check is commented out of the sample /dev/crash driver
included in the crash source tree in the memory_driver subdirectory.
Dave