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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E6895C433F5 for ; Wed, 13 Oct 2021 12:56:52 +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 B1A5760EE9 for ; Wed, 13 Oct 2021 12:56:52 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org B1A5760EE9 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=h6LdzG1wWD/NLgV5ZSxqI5IXaOh0iZ2YOdod1LJSmPE=; b=zgqayW09aG3bDR 5xHZCRbn/4HsngD98x1EX21aPtmdOl9mA5GA6tqbhvr5JVtVxApY9RMCsMSF4r2eoB6swTt5M2D38 4CaS5Z83JSIUaIVXgT/a42Ora0G6VRwY6Ms2mWWzf+X/6xaRChqTYT3ABmTHEZ5Lar55G2OyxVFIM kAhkDXCS+NztETkhCMm+/CaBd/1QtRnG9CsOwQPPI2RlJooA3k+dCu1aFOzD0tkAq7NQLbF1sF6fL xnEQ3dq1NYanVC7clzbEUd5M2hK4MGyEtzNBBhFcIihDmjs8Pml8YjoprzY1lcoo6HM9CE9xHU+v5 kthh3hZapQZySFot9BZg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1madmN-00GhUy-0y; Wed, 13 Oct 2021 12:54:44 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1maczL-00GRr7-5B for linux-arm-kernel@lists.infradead.org; Wed, 13 Oct 2021 12:04:04 +0000 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 1FBDA610E5; Wed, 13 Oct 2021 12:04:01 +0000 (UTC) Received: from sofa.misterjones.org ([185.219.108.64] helo=why.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1maczH-00GTgY-D0; Wed, 13 Oct 2021 13:03:59 +0100 From: Marc Zyngier To: kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: will@kernel.org, james.morse@arm.com, alexandru.elisei@arm.com, suzuki.poulose@arm.com, mark.rutland@arm.com, pbonzini@redhat.com, drjones@redhat.com, oupton@google.com, qperret@google.com, kernel-team@android.com, tabba@google.com Subject: [PATCH v9 16/22] KVM: arm64: pkvm: Drop sysregs that should never be routed to the host Date: Wed, 13 Oct 2021 13:03:40 +0100 Message-Id: <20211013120346.2926621-6-maz@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20211013120346.2926621-1-maz@kernel.org> References: <20211010145636.1950948-12-tabba@google.com> <20211013120346.2926621-1-maz@kernel.org> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, will@kernel.org, james.morse@arm.com, alexandru.elisei@arm.com, suzuki.poulose@arm.com, mark.rutland@arm.com, pbonzini@redhat.com, drjones@redhat.com, oupton@google.com, qperret@google.com, kernel-team@android.com, tabba@google.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211013_050403_302733_CCF7040A X-CRM114-Status: GOOD ( 12.06 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org A bunch of system registers (most of them MM related) should never trap to the host under any circumstance. Keep them close to our chest. Signed-off-by: Marc Zyngier --- arch/arm64/kvm/hyp/nvhe/sys_regs.c | 50 ------------------------------ 1 file changed, 50 deletions(-) diff --git a/arch/arm64/kvm/hyp/nvhe/sys_regs.c b/arch/arm64/kvm/hyp/nvhe/sys_regs.c index e2b3a9e167da..eb4ee2589316 100644 --- a/arch/arm64/kvm/hyp/nvhe/sys_regs.c +++ b/arch/arm64/kvm/hyp/nvhe/sys_regs.c @@ -371,34 +371,8 @@ static const struct sys_reg_desc pvm_sys_reg_descs[] = { AARCH64(SYS_ID_AA64MMFR1_EL1), AARCH64(SYS_ID_AA64MMFR2_EL1), - HOST_HANDLED(SYS_SCTLR_EL1), - HOST_HANDLED(SYS_ACTLR_EL1), - HOST_HANDLED(SYS_CPACR_EL1), - - HOST_HANDLED(SYS_RGSR_EL1), - HOST_HANDLED(SYS_GCR_EL1), - /* Scalable Vector Registers are restricted. */ - HOST_HANDLED(SYS_TTBR0_EL1), - HOST_HANDLED(SYS_TTBR1_EL1), - HOST_HANDLED(SYS_TCR_EL1), - - HOST_HANDLED(SYS_APIAKEYLO_EL1), - HOST_HANDLED(SYS_APIAKEYHI_EL1), - HOST_HANDLED(SYS_APIBKEYLO_EL1), - HOST_HANDLED(SYS_APIBKEYHI_EL1), - HOST_HANDLED(SYS_APDAKEYLO_EL1), - HOST_HANDLED(SYS_APDAKEYHI_EL1), - HOST_HANDLED(SYS_APDBKEYLO_EL1), - HOST_HANDLED(SYS_APDBKEYHI_EL1), - HOST_HANDLED(SYS_APGAKEYLO_EL1), - HOST_HANDLED(SYS_APGAKEYHI_EL1), - - HOST_HANDLED(SYS_AFSR0_EL1), - HOST_HANDLED(SYS_AFSR1_EL1), - HOST_HANDLED(SYS_ESR_EL1), - RAZ_WI(SYS_ERRIDR_EL1), RAZ_WI(SYS_ERRSELR_EL1), RAZ_WI(SYS_ERXFR_EL1), @@ -408,31 +382,12 @@ static const struct sys_reg_desc pvm_sys_reg_descs[] = { RAZ_WI(SYS_ERXMISC0_EL1), RAZ_WI(SYS_ERXMISC1_EL1), - HOST_HANDLED(SYS_TFSR_EL1), - HOST_HANDLED(SYS_TFSRE0_EL1), - - HOST_HANDLED(SYS_FAR_EL1), - HOST_HANDLED(SYS_PAR_EL1), - /* Performance Monitoring Registers are restricted. */ - HOST_HANDLED(SYS_MAIR_EL1), - HOST_HANDLED(SYS_AMAIR_EL1), - /* Limited Ordering Regions Registers are restricted. */ - HOST_HANDLED(SYS_VBAR_EL1), - HOST_HANDLED(SYS_DISR_EL1), - /* GIC CPU Interface registers are restricted. */ - HOST_HANDLED(SYS_CONTEXTIDR_EL1), - HOST_HANDLED(SYS_TPIDR_EL1), - - HOST_HANDLED(SYS_SCXTNUM_EL1), - - HOST_HANDLED(SYS_CNTKCTL_EL1), - HOST_HANDLED(SYS_CCSIDR_EL1), HOST_HANDLED(SYS_CLIDR_EL1), HOST_HANDLED(SYS_CSSELR_EL1), @@ -440,11 +395,6 @@ static const struct sys_reg_desc pvm_sys_reg_descs[] = { /* Performance Monitoring Registers are restricted. */ - HOST_HANDLED(SYS_TPIDR_EL0), - HOST_HANDLED(SYS_TPIDRRO_EL0), - - HOST_HANDLED(SYS_SCXTNUM_EL0), - /* Activity Monitoring Registers are restricted. */ HOST_HANDLED(SYS_CNTP_TVAL_EL0), -- 2.30.2 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel