From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 531D5C433E0 for ; Wed, 5 Aug 2020 18:45:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 343FD2376E for ; Wed, 5 Aug 2020 18:45:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1596653141; bh=hP1SRFFRWqbDLnmg7Ay63LFh6KHBdMO20c6qOlnTzaU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=C5FQwnYPMvexjkAMlwVyhdJLkoSqnPjKvuDgLbZSXv5SejRcu0ddUihIR+AM0cDp8 qUXwtM1rpg7k55GvwRqFOFm96HyI0slGnRuvI6c5G/GNY1E3vEP2biEFvJiFqp4/HL Kzu0fAwO11qGqgkEgXnZMSu+kBrkz76jOJglo9Ik= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728471AbgHESoj (ORCPT ); Wed, 5 Aug 2020 14:44:39 -0400 Received: from mail.kernel.org ([198.145.29.99]:35364 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729168AbgHES1m (ORCPT ); Wed, 5 Aug 2020 14:27:42 -0400 Received: from disco-boy.misterjones.org (disco-boy.misterjones.org [51.254.78.96]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D2FD322D2A; Wed, 5 Aug 2020 18:26:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1596651987; bh=hP1SRFFRWqbDLnmg7Ay63LFh6KHBdMO20c6qOlnTzaU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=h9eEK8BsrKZSBdrVuibcMXxUkOL3E4OeEGwyLqOiAD72vkvE1mgubR+PctgLbx/qK w9d85l7gVxXaqPvl+OEv5knhp3E8oh3phOB3X0HVrFUJW3LrUpYn7ZpiytWtcbN4KO PBsFiJ37pcTIvWo/PIgaxNQerQLevFnqpUGoe+1Q= Received: from 78.163-31-62.static.virginmediabusiness.co.uk ([62.31.163.78] helo=why.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1k3Nfm-0004w9-QR; Wed, 05 Aug 2020 18:57:54 +0100 From: Marc Zyngier To: Paolo Bonzini Cc: Alexander Graf , Alexandru Elisei , Andrew Scull , Catalin Marinas , Christoffer Dall , David Brazdil , Eric Auger , Gavin Shan , James Morse , Mark Rutland , Peng Hao , Quentin Perret , Will Deacon , Julien Thierry , Suzuki K Poulose , linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, kernel-team@android.com Subject: [PATCH 36/56] KVM: arm64: Introduce accessor for ctxt->sys_reg Date: Wed, 5 Aug 2020 18:56:40 +0100 Message-Id: <20200805175700.62775-37-maz@kernel.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200805175700.62775-1-maz@kernel.org> References: <20200805175700.62775-1-maz@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 62.31.163.78 X-SA-Exim-Rcpt-To: pbonzini@redhat.com, graf@amazon.com, alexandru.elisei@arm.com, ascull@google.com, catalin.marinas@arm.com, christoffer.dall@arm.com, dbrazdil@google.com, eric.auger@redhat.com, gshan@redhat.com, james.morse@arm.com, mark.rutland@arm.com, richard.peng@oppo.com, qperret@google.com, will@kernel.org, julien.thierry.kdev@gmail.com, suzuki.poulose@arm.com, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, kernel-team@android.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org In order to allow the disintegration of the per-vcpu sysreg array, let's introduce a new helper (ctxt_sys_reg()) that returns the in-memory copy of a system register, picked from a given context. __vcpu_sys_reg() is rewritten to use this helper. Signed-off-by: Marc Zyngier --- arch/arm64/include/asm/kvm_host.h | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index 85a529eeeae3..5b168226088e 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -405,12 +405,17 @@ struct kvm_vcpu_arch { #define vcpu_gp_regs(v) (&(v)->arch.ctxt.gp_regs) /* - * Only use __vcpu_sys_reg if you know you want the memory backed version of a - * register, and not the one most recently accessed by a running VCPU. For - * example, for userspace access or for system registers that are never context - * switched, but only emulated. + * Only use __vcpu_sys_reg/ctxt_sys_reg if you know you want the + * memory backed version of a register, and not the one most recently + * accessed by a running VCPU. For example, for userspace access or + * for system registers that are never context switched, but only + * emulated. */ -#define __vcpu_sys_reg(v,r) ((v)->arch.ctxt.sys_regs[(r)]) +#define __ctxt_sys_reg(c,r) (&(c)->sys_regs[(r)]) + +#define ctxt_sys_reg(c,r) (*__ctxt_sys_reg(c,r)) + +#define __vcpu_sys_reg(v,r) (ctxt_sys_reg(&(v)->arch.ctxt, (r))) u64 vcpu_read_sys_reg(const struct kvm_vcpu *vcpu, int reg); void vcpu_write_sys_reg(struct kvm_vcpu *vcpu, u64 val, int reg); -- 2.27.0