KVM: PPC: Book3S HV P9: Use host timer accounting to avoid decrementer read

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There is no need to save away the host DEC value, as it is derived
from the host timer subsystem which maintains the next timer time,
so it can be restored from there.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211123095231.1036501-5-npiggin@gmail.com

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Nicholas Piggin 2021-11-23 19:51:42 +10:00 • committed by Michael Ellerman

parent 5955c7469a

commit 4ebbd075bc

3 changed files with 13 additions and 7 deletions

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5

arch/powerpc/include/asm/time.h

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1

arch/powerpc/kernel/time.c

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14

arch/powerpc/kvm/book3s_hv.c

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