From: Nicholas Piggin <npiggin@gmail.com>
Date: Mon, 12 Apr 2021 01:48:39 +0000 (+1000)
Subject: KVM: PPC: Book3S HV: Remove redundant mtspr PSPB
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=4b5f0a0d49e663adf1c7c6f2dd05cb18dd53db8c;p=linux.git

KVM: PPC: Book3S HV: Remove redundant mtspr PSPB

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

Suggested-by: Fabiano Rosas <farosas@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Daniel Axtens <dja@axtens.net>
Acked-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210412014845.1517916-7-npiggin@gmail.com
---

diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index 70c6e9c27eb75..b88df175aa76b 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -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);