[v1,06/12] KVM: PPC: Book3S HV: Remove redundant mtspr PSPB

Message ID	20210412014845.1517916-7-npiggin@gmail.com
State	New
Headers	show Return-Path: <kvm-ppc-owner@vger.kernel.org> From: Nicholas Piggin <npiggin@gmail.com> To: kvm-ppc@vger.kernel.org Cc: Nicholas Piggin <npiggin@gmail.com>, linuxppc-dev@lists.ozlabs.org, Paul Mackerras <paulus@ozlabs.org>, Fabiano Rosas <farosas@linux.ibm.com>, Daniel Axtens <dja@axtens.net> Subject: [PATCH v1 06/12] KVM: PPC: Book3S HV: Remove redundant mtspr PSPB Date: Mon, 12 Apr 2021 11:48:39 +1000 Message-Id: <20210412014845.1517916-7-npiggin@gmail.com> In-Reply-To: <20210412014845.1517916-1-npiggin@gmail.com> References: <20210412014845.1517916-1-npiggin@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk
Series	minor KVM fixes and cleanups \| expand [v1,00/12] minor KVM fixes and cleanups [v1,01/12] KVM: PPC: Book3S HV P9: Restore host CTRL SPR after guest exit [v1,02/12] KVM: PPC: Book3S HV: Nested move LPCR sanitising to sanitise_hv_regs [v1,03/12] KVM: PPC: Book3S HV: Add a function to filter guest LPCR bits [v1,04/12] KVM: PPC: Book3S HV: Disallow LPCR[AIL] to be set to 1 or 2 [v1,05/12] KVM: PPC: Book3S HV: Prevent radix guests setting LPCR[TC] [v1,06/12] KVM: PPC: Book3S HV: Remove redundant mtspr PSPB [v1,07/12] KVM: PPC: Book3S HV: remove unused kvmppc_h_protect argument [v1,08/12] KVM: PPC: Book3S HV: Fix CONFIG_SPAPR_TCE_IOMMU=n default hcalls [v1,09/12] powerpc/64s: Remove KVM handler support from CBE_RAS interrupts [v1,10/12] powerpc/64s: remove KVM SKIP test from instruction breakpoint handler [v1,11/12] KVM: PPC: Book3S HV: Ensure MSR[ME] is always set in guest MSR [v1,12/12] KVM: PPC: Book3S HV: Ensure MSR[HV] is always clear in guest MSR

Message ID

20210412014845.1517916-7-npiggin@gmail.com

State

New

Headers

From: Nicholas Piggin <npiggin@gmail.com>
To: kvm-ppc@vger.kernel.org
Cc: Nicholas Piggin <npiggin@gmail.com>, linuxppc-dev@lists.ozlabs.org,
        Paul Mackerras <paulus@ozlabs.org>,
        Fabiano Rosas <farosas@linux.ibm.com>,
        Daniel Axtens <dja@axtens.net>
Subject: [PATCH v1 06/12] KVM: PPC: Book3S HV: Remove redundant mtspr PSPB
Date: Mon, 12 Apr 2021 11:48:39 +1000
Message-Id: <20210412014845.1517916-7-npiggin@gmail.com>
In-Reply-To: <20210412014845.1517916-1-npiggin@gmail.com>
References: <20210412014845.1517916-1-npiggin@gmail.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Series

minor KVM fixes and cleanups | expand

Commit Message

Nicholas Piggin April 12, 2021, 1:48 a.m. UTC

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

Acked-by: Paul Mackerras <paulus@ozlabs.org>
Suggested-by: Fabiano Rosas <farosas@linux.ibm.com>
Reviewed-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
 arch/powerpc/kvm/book3s_hv.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index 70c6e9c27eb7..b88df175aa76 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);

[v1,06/12] KVM: PPC: Book3S HV: Remove redundant mtspr PSPB

Commit Message

Patch