KVM: PPC: Book3S HV P9: Add helpers for OS SPR handling

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This is a first step to wrapping supervisor and user SPR saving and
loading up into helpers, which will then be called independently in
bare metal and nested HV cases in order to optimise SPR access.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210528090752.3542186-20-npiggin@gmail.com

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Nicholas Piggin 2021-05-28 19:07:39 +10:00 • committed by Michael Ellerman

parent 68e3baaca8

commit edba6aff4f

1 changed files with 93 additions and 55 deletions

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arch/powerpc/kvm/book3s_hv.c

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