some boot/shutdown improvements
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b4 am [email protected]Versions newest first
- v1 Latest3 patches 6 repliesIn review
Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/3 | powerpc/powernv: Avoid the secondary hold spinloop for OPAL bootarch/ arch/ | +15 | 6 replies | |
| 2/3 | powerpc/powernv: Always stop secondaries before reboot/shutdownarch/ arch/ arch/ | +7 | 0 replies | |
| 3/3 | powerpc: use NMI IPI for smp_send_stoparch/ | +5 | 0 replies |
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Cover letter [PATCH 0/3] some boot/shutdown improvements
Hi,
These are a couple of improvements to powernv/opal boot and shutdown paths. Also a patch to move smp_send_stop over to use NMI IPIs, which gives us a significantly better chance to stop secondaries on platforms which support it (pSeries and PowerNV POWER9 so far).
Patch 1 in particular it would be good if people could take a look at. I *think* it's okay wrt kexec, but I could miss something or some old firmware might do the wrong thing.
Thanks,
Nick
Nicholas Piggin (3):
powerpc/powernv: Avoid the secondary hold spinloop for OPAL boot powerpc/powernv: Always stop secondaries before reboot/shutdown
powerpc: use NMI IPI for smp_send_stop
arch/powerpc/include/asm/opal.h | 2 +- arch/powerpc/kernel/head_64.S | 4 +++- arch/powerpc/kernel/setup_64.c | 14 ++++++++++++-- arch/powerpc/kernel/smp.c | 9 +++++---- arch/powerpc/platforms/powernv/opal-flash.c | 28 +--------------------------- arch/powerpc/platforms/powernv/setup.c | 15 +++++---------- 6 files changed, 27 insertions(+), 45 deletions(-)
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2.13.3