From patchwork Fri Apr 20 12:52:24 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Mackerras X-Patchwork-Id: 901897 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=kvm-ppc-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=ozlabs.org Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; secure) header.d=ozlabs.org header.i=@ozlabs.org header.b="ZLjqq44D"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 40SG531WcTz9s7T for ; Fri, 20 Apr 2018 22:53:59 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754740AbeDTMx5 (ORCPT ); Fri, 20 Apr 2018 08:53:57 -0400 Received: from ozlabs.org ([203.11.71.1]:60735 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754591AbeDTMxz (ORCPT ); Fri, 20 Apr 2018 08:53:55 -0400 Received: by ozlabs.org (Postfix, from userid 1003) id 40SG4y1vmVz9s3G; Fri, 20 Apr 2018 22:53:54 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ozlabs.org; s=201707; t=1524228834; bh=ItDcvBIWn83DQCyRwE3k0hAAAiO00Nk69Xb7DCatjfU=; h=Date:From:To:Cc:Subject:From; b=ZLjqq44DHsKt+zLSAc1eBMdNv/2cpw6jQZc2cjVgTrfoSyze/j3EThPrNkeYkrzeF /fD8SJ+lSCYx5AiOQVD5fQc0UmfOZx6fc6KSphM/rMMBgVrsciJatsNiPvEvL+HAgk fO75ix27BW8uAqJCHwf/mtesQQpGqi2PJwJLJMVfw4sGISK398/Lw7q82ZQI7CovZM vrsziBUTId6J9DMOkoSunkUDjhSaHWoTKNDX6TXJYVYOGni5rZdpdByCdPQJ8rkMfa 3BL/A5CL+oWiX+MVQo8sA1b/XwhnWI8O09rrvNk2emjEht77R3MTQKw/JdoCRI7kKO AUEy6R0JNRbIA== Date: Fri, 20 Apr 2018 22:52:24 +1000 From: Paul Mackerras To: kvm@vger.kernel.org, kvm-ppc@vger.kernel.org Cc: Nikunj A Dadhania Subject: [PATCH 1/2] KVM: PPC: Book3S HV: Add 'online' register to ONE_REG interface Message-ID: <20180420125224.GB25198@fergus.ozlabs.ibm.com> MIME-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/1.5.24 (2015-08-30) Sender: kvm-ppc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm-ppc@vger.kernel.org This adds a new KVM_REG_PPC_ONLINE register which userspace can set to 0 or 1 via the GET/SET_ONE_REG interface to indicate whether it considers the VCPU to be offline (0), that is, not currently running, or online (1). This will be used in a later patch to configure the register which controls PURR and SPURR accumulation. Signed-off-by: Paul Mackerras --- arch/powerpc/include/asm/kvm_host.h | 2 ++ arch/powerpc/include/uapi/asm/kvm.h | 1 + arch/powerpc/kvm/book3s_hv.c | 6 ++++++ 3 files changed, 9 insertions(+) diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h index 17498e9..9703f8f 100644 --- a/arch/powerpc/include/asm/kvm_host.h +++ b/arch/powerpc/include/asm/kvm_host.h @@ -772,6 +772,8 @@ struct kvm_vcpu_arch { u64 busy_preempt; u32 emul_inst; + + u32 online; #endif #ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING diff --git a/arch/powerpc/include/uapi/asm/kvm.h b/arch/powerpc/include/uapi/asm/kvm.h index 833ed9a..1b32b56 100644 --- a/arch/powerpc/include/uapi/asm/kvm.h +++ b/arch/powerpc/include/uapi/asm/kvm.h @@ -633,6 +633,7 @@ struct kvm_ppc_cpu_char { #define KVM_REG_PPC_PSSCR (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0xbd) #define KVM_REG_PPC_DEC_EXPIRY (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0xbe) +#define KVM_REG_PPC_ONLINE (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0xbf) /* Transactional Memory checkpointed state: * This is all GPRs, all VSX regs and a subset of SPRs diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c index 9963f65..04bd717 100644 --- a/arch/powerpc/kvm/book3s_hv.c +++ b/arch/powerpc/kvm/book3s_hv.c @@ -1526,6 +1526,9 @@ static int kvmppc_get_one_reg_hv(struct kvm_vcpu *vcpu, u64 id, *val = get_reg_val(id, vcpu->arch.dec_expires + vcpu->arch.vcore->tb_offset); break; + case KVM_REG_PPC_ONLINE: + *val = get_reg_val(id, vcpu->arch.online); + break; default: r = -EINVAL; break; @@ -1757,6 +1760,9 @@ static int kvmppc_set_one_reg_hv(struct kvm_vcpu *vcpu, u64 id, vcpu->arch.dec_expires = set_reg_val(id, *val) - vcpu->arch.vcore->tb_offset; break; + case KVM_REG_PPC_ONLINE: + vcpu->arch.online = set_reg_val(id, *val); + break; default: r = -EINVAL; break;