Hi Kazu,
On 02/14/2019 10:33 PM, Kazuhito Hagio wrote:
Hi Bhupesh,
-----Original Message-----
Yes, the ARMv8 simulator can support both ARMv8.2 LPA and LVA features
and I tested the above suggestion earlier also on the same and landed
into incorrect paddress calculation issues.
Since the simulator is slow and its time taking to insert rebuilt
user-space components in the Linaro initramfs being used on the same, I
would suggest that we go ahead with the above code for now and later
when I have more results from the simulator/real hardware, I will send
out a follow-up patch (if needed) to fix the paddress calculation.
Hmm, it theoretically needs __pte_to_phys(), right?
So if you have an issue with it, there may be a bug somewhere
and need to debug it. Do you have the detailed information?
Its not very easy to get the detailed UART console logs from the
simulator, so it is hard to get all the debug logs from makedumpfile, so
I am trying debugging the issue via 'gdb' by adding it to the initramfs.
I don't know what environment the simulater is, but you cannot
capture a vmcore with cp or something? then debug makedumpfile
with it on a real arm64 machine. I usually do like this.
# cp --sparse=always /proc/vmcore vmcore
I'm willing to debug it if you would send me the vmcore and vmlinux.
Yes, unfortunately its a very restrictive environment and I cannot get
network to work on it at my end :(, so its not easy to test new kenrel +
user-space changes and also to export vmcore or dump logs outside the
simulator.
However, I was able to create a new simulator vm-image today with the
required changes and test your suggestions.
Thanks for sharing your inputs. Accordingly I have incorporated your
suggestions and have sent a v2 patchset today, merging the LPA and LVA
makedumpfile changes into a single patchset for easier review.
Please see the same here:
<http://lists.infradead.org/pipermail/kexec/2019-February/022456.html>
Thanks,
Bhupesh
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