Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S936684AbdLSO42 (ORCPT ); Tue, 19 Dec 2017 09:56:28 -0500 Received: from mx2.suse.de ([195.135.220.15]:50192 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935186AbdLSO40 (ORCPT ); Tue, 19 Dec 2017 09:56:26 -0500 From: Alexander Graf To: kvm-ppc@vger.kernel.org Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Paul Mackerras Subject: [PATCH] KVM: PPC: Book3S HV: Remove vcpu->arch.dec usage Date: Tue, 19 Dec 2017 15:56:24 +0100 Message-Id: <20171219145624.46724-1-agraf@suse.de> X-Mailer: git-send-email 2.12.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 903 Lines: 30 On Book3S in HV mode, we don't use the vcpu->arch.dec field at all. Instead, all logic is built around vcpu->arch.dec_expires. So let's remove the one remaining piece of code that was setting it. Signed-off-by: Alexander Graf --- Looking through the DEC logic, I fail to see any code that allows save or restore of DEC. Do we maybe miss out on that register for (live) migration? --- arch/powerpc/kvm/book3s_hv_rmhandlers.S | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S index 2659844784b8..c8ffd69adfec 100644 --- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S +++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S @@ -957,7 +957,6 @@ ALT_FTR_SECTION_END_IFCLR(CPU_FTR_ARCH_300) mftb r7 subf r3,r7,r8 mtspr SPRN_DEC,r3 - std r3,VCPU_DEC(r4) ld r5, VCPU_SPRG0(r4) ld r6, VCPU_SPRG1(r4) -- 2.12.3