Commit 4b5f0a0d authored by Nicholas Piggin's avatar Nicholas Piggin Committed by Michael Ellerman
Browse files

KVM: PPC: Book3S HV: Remove redundant mtspr PSPB 



This SPR is set to 0 twice when exiting the guest.

Suggested-by: default avatarFabiano Rosas <farosas@linux.ibm.com>
Signed-off-by: default avatarNicholas Piggin <npiggin@gmail.com>
Reviewed-by: default avatarDaniel Axtens <dja@axtens.net>
Acked-by: default avatarPaul Mackerras <paulus@ozlabs.org>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210412014845.1517916-7-npiggin@gmail.com
parent 72c15287

arch/powerpc/kvm/book3s_hv.c

+0 −1
Original line number Diff line number Diff line
@@ -3790,7 +3790,6 @@ static int kvmhv_p9_guest_entry(struct kvm_vcpu *vcpu, u64 time_limit, 
	mtspr(SPRN_DSCR, host_dscr);

	mtspr(SPRN_TIDR, host_tidr);

	mtspr(SPRN_IAMR, host_iamr);

	mtspr(SPRN_PSPB, 0);



	if (host_amr != vcpu->arch.amr)

		mtspr(SPRN_AMR, host_amr);