KVM: PPC: Book3S HV P9: Don't restore PSSCR if not needed

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This also moves the PSSCR update in nested entry to avoid a SPR
scoreboard stall.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211123095231.1036501-42-npiggin@gmail.com

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Nicholas Piggin 2021-11-23 19:52:19 +10:00 • committed by Michael Ellerman

parent 9c75f65f35

commit a089a6869e

2 changed files with 24 additions and 9 deletions

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7

arch/powerpc/kvm/book3s_hv.c

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26

arch/powerpc/kvm/book3s_hv_p9_entry.c

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