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powerpc/xmon: Dump XIVE information for online-only processors.

Steve Best requested to merge sfbest/centos-stream-9:2037642 into main

Bugzilla: http://bugzilla.redhat.com/2037642

Build Info: https://brewweb.engineering.redhat.com/brew/taskinfo?taskID=42317497

Tested: I did sanity xmon testing on power 9 (ibm-p9z-06-lp9) system.

Upstream Status: git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git

commit f1aa0e47c29268776205698f2453dc07fab49855 Author: Sachin Sant sachinp@linux.vnet.ibm.com Date: Wed Jan 5 19:47:48 2022 +0530

powerpc/xmon: Dump XIVE information for online-only processors.

dxa command in XMON debugger iterates through all possible processors.
As a result, empty lines are printed even for processors which are not
online.

CPU 47:pp=00 CPPR=ff IPI=0x0040002f PQ=-- EQ idx=699 T=0 00000000 00000000
CPU 48:
CPU 49:

Restrict XIVE information(dxa) to be displayed for online processors only.

Signed-off-by: Sachin Sant <sachinp@linux.vnet.ibm.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/164139226833.12930.272224382183014664.sendpatchset@MacBook-Pro.local

Signed-off-by: Steve Best sbest@redhat.com

Edited by Steve Best

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