KMV: PPC: Book3S HV P9: Use set_dec to set decrementer to host

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The host Linux timer code arms the decrementer with the value
'decrementers_next_tb - current_tb' using set_dec(), which stores
val - 1 on Book3S-64, which is not quite the same as what KVM does
to re-arm the host decrementer when exiting the guest.

This shouldn't be a significant change, but it makes the logic match
and avoids this small extra change being brought into the next patch.

Suggested-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211123095231.1036501-4-npiggin@gmail.com

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Nicholas Piggin 2021-11-23 19:51:41 +10:00 • committed by Michael Ellerman

parent 736df58fd5

commit 5955c7469a

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arch/powerpc/kvm/book3s_hv.c

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