From patchwork Fri Dec 20 14:30:12 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Murray X-Patchwork-Id: 11305639 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6564D6C1 for ; Fri, 20 Dec 2019 14:32:16 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 44C9B21D7E for ; Fri, 20 Dec 2019 14:32:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="G9WLFV9N" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 44C9B21D7E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=mgMbfez87ySeWU7P3TjG1EHZNvxYtocb368JLRjbOlU=; b=G9WLFV9NyH5yeP ZnJS94n47/AdrihiY8as37caw2w1HtrzpNxPWZIKy6iESraRWtq1FAc0aNZ96RAHCZEHGKJw0e93x f+Ss15AbpQQ9kPGzfXkKK9QITWG8L1ToPz/vnVW7wyzD99rR4xNeZsl5J9JqKCMrAA8qvZ2tcLZU0 y3pLzWfUfv6SJLFkMJhbk4vb4oliu16otbtHEYXm0If37C1PJJUvPO9JXDqe4c653abr5TxNYsQwb Y0CKAgeFLtxg9kBDYH7xW0lxH2s9RLQZO1l4bk692OZ6z1cG3u3ef9e8KEQO+3WOupzFblpPhC7xn JrsdNlTo8xlipdSxbvXA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iiJKA-0003Kp-Jv; Fri, 20 Dec 2019 14:32:14 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iiJIj-00022A-Qu for linux-arm-kernel@lists.infradead.org; Fri, 20 Dec 2019 14:31:06 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 3C03411B3; Fri, 20 Dec 2019 06:30:43 -0800 (PST) Received: from e119886-lin.cambridge.arm.com (unknown [10.37.6.20]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 6302E3F718; Fri, 20 Dec 2019 06:30:41 -0800 (PST) From: Andrew Murray To: Marc Zyngier , Catalin Marinas , Will Deacon Subject: [PATCH v2 05/18] arm64: KVM/VHE: enable the use PMSCR_EL12 on VHE systems Date: Fri, 20 Dec 2019 14:30:12 +0000 Message-Id: <20191220143025.33853-6-andrew.murray@arm.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20191220143025.33853-1-andrew.murray@arm.com> References: <20191220143025.33853-1-andrew.murray@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191220_063045_934413_9740E776 X-CRM114-Status: GOOD ( 12.35 ) X-Spam-Score: 0.0 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [217.140.110.172 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Sudeep Holla , kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: Sudeep Holla Currently, we are just using PMSCR_EL1 in the host for non VHE systems. We already have the {read,write}_sysreg_el*() accessors for accessing particular ELs' sysregs in the presence of VHE. Lets just define PMSCR_EL12 and start making use of it here which will access the right register on both VHE and non VHE systems. This change is required to add SPE guest support on VHE systems. Signed-off-by: Sudeep Holla Signed-off-by: Andrew Murray --- arch/arm64/include/asm/sysreg.h | 1 + arch/arm64/kvm/hyp/debug-sr.c | 6 +++--- 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h index 6e919fafb43d..6c0b0ad97688 100644 --- a/arch/arm64/include/asm/sysreg.h +++ b/arch/arm64/include/asm/sysreg.h @@ -468,6 +468,7 @@ #define SYS_AFSR1_EL12 sys_reg(3, 5, 5, 1, 1) #define SYS_ESR_EL12 sys_reg(3, 5, 5, 2, 0) #define SYS_FAR_EL12 sys_reg(3, 5, 6, 0, 0) +#define SYS_PMSCR_EL12 sys_reg(3, 5, 9, 9, 0) #define SYS_MAIR_EL12 sys_reg(3, 5, 10, 2, 0) #define SYS_AMAIR_EL12 sys_reg(3, 5, 10, 3, 0) #define SYS_VBAR_EL12 sys_reg(3, 5, 12, 0, 0) diff --git a/arch/arm64/kvm/hyp/debug-sr.c b/arch/arm64/kvm/hyp/debug-sr.c index 0fc9872a1467..98be2f11c16c 100644 --- a/arch/arm64/kvm/hyp/debug-sr.c +++ b/arch/arm64/kvm/hyp/debug-sr.c @@ -108,8 +108,8 @@ static void __hyp_text __debug_save_spe_nvhe(u64 *pmscr_el1) return; /* Yes; save the control register and disable data generation */ - *pmscr_el1 = read_sysreg_s(SYS_PMSCR_EL1); - write_sysreg_s(0, SYS_PMSCR_EL1); + *pmscr_el1 = read_sysreg_el1(SYS_PMSCR); + write_sysreg_el1(0, SYS_PMSCR); isb(); /* Now drain all buffered data to memory */ @@ -126,7 +126,7 @@ static void __hyp_text __debug_restore_spe_nvhe(u64 pmscr_el1) isb(); /* Re-enable data generation */ - write_sysreg_s(pmscr_el1, SYS_PMSCR_EL1); + write_sysreg_el1(pmscr_el1, SYS_PMSCR); } static void __hyp_text __debug_save_state(struct kvm_vcpu *vcpu,