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Mon, 01 Feb 2021 19:06:30 +0000 Received: from mail.kernel.org ([198.145.29.99]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1l6eWp-0005NF-HR for linux-arm-kernel@lists.infradead.org; Mon, 01 Feb 2021 19:06:28 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id C9B0564E24; Mon, 1 Feb 2021 19:06:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1612206386; bh=T3mY97qTIItV8Y42MPe/7OnIIOnipORNs8aCgjUcDfY=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=IK3X+++h0B6P2DMotlKVBwgwm+p26fmU7HUAU1uWWJnmTH9dbm4S29ZapeAO/IFNX wXXumwIvhBuHTt6leVMXrHaCknYWtXpMFHEhuDPYwZ7e79REIoHIBrQW/N+2FahWAm lSWxcMm/v1ZRquJyuDh4jGkxa6FFsC48AjSU98APyloPdqkFwkJEX3GKC/Q+vYFaQ6 RbG7juz//Uh5l4ZEU8tLTFZcuG20N6vCXc53cxkcTq0cm5NNyogSU9ubuxW6foC1YQ EvPVxGyBT8IqJVy0L4CVuODoaq4lbhgWoWWjl5x+XPghhXPMWqBgsNh7yFZDoFMkTc cV6HjB1xTMGFw== Date: Mon, 1 Feb 2021 19:06:20 +0000 From: Will Deacon To: Quentin Perret Subject: Re: [RFC PATCH v2 11/26] KVM: arm64: Stub CONFIG_DEBUG_LIST at Hyp Message-ID: <20210201190620.GJ15632@willie-the-truck> References: <20210108121524.656872-1-qperret@google.com> <20210108121524.656872-12-qperret@google.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210108121524.656872-12-qperret@google.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210201_140627_657480_79B2B9EF X-CRM114-Status: GOOD ( 18.45 ) 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 , devicetree@vger.kernel.org, kernel-team@android.com, Suzuki K Poulose , android-kvm@google.com, Catalin Marinas , Fuad Tabba , linux-kernel@vger.kernel.org, Rob Herring , James Morse , linux-arm-kernel@lists.infradead.org, Marc Zyngier , David Brazdil , Frank Rowand , kvmarm@lists.cs.columbia.edu, Julien Thierry 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 On Fri, Jan 08, 2021 at 12:15:09PM +0000, Quentin Perret wrote: > In order to use the kernel list library at EL2, introduce stubs for the > CONFIG_DEBUG_LIST out-of-lines calls. > > Signed-off-by: Quentin Perret > --- > arch/arm64/kvm/hyp/nvhe/Makefile | 2 +- > arch/arm64/kvm/hyp/nvhe/stub.c | 22 ++++++++++++++++++++++ > 2 files changed, 23 insertions(+), 1 deletion(-) > create mode 100644 arch/arm64/kvm/hyp/nvhe/stub.c > > diff --git a/arch/arm64/kvm/hyp/nvhe/Makefile b/arch/arm64/kvm/hyp/nvhe/Makefile > index 1fc0684a7678..33bd381d8f73 100644 > --- a/arch/arm64/kvm/hyp/nvhe/Makefile > +++ b/arch/arm64/kvm/hyp/nvhe/Makefile > @@ -10,7 +10,7 @@ lib-objs := clear_page.o copy_page.o memcpy.o memset.o > lib-objs := $(addprefix ../../../lib/, $(lib-objs)) > > obj-y := timer-sr.o sysreg-sr.o debug-sr.o switch.o tlb.o hyp-init.o host.o \ > - hyp-main.o hyp-smp.o psci-relay.o early_alloc.o > + hyp-main.o hyp-smp.o psci-relay.o early_alloc.o stub.o > obj-y += ../vgic-v3-sr.o ../aarch32.o ../vgic-v2-cpuif-proxy.o ../entry.o \ > ../fpsimd.o ../hyp-entry.o ../exception.o > obj-y += $(lib-objs) > diff --git a/arch/arm64/kvm/hyp/nvhe/stub.c b/arch/arm64/kvm/hyp/nvhe/stub.c > new file mode 100644 > index 000000000000..c0aa6bbfd79d > --- /dev/null > +++ b/arch/arm64/kvm/hyp/nvhe/stub.c > @@ -0,0 +1,22 @@ > +// SPDX-License-Identifier: GPL-2.0-only > +/* > + * Stubs for out-of-line function calls caused by re-using kernel > + * infrastructure at EL2. > + * > + * Copyright (C) 2020 - Google LLC > + */ > + > +#include > + > +#ifdef CONFIG_DEBUG_LIST > +bool __list_add_valid(struct list_head *new, struct list_head *prev, > + struct list_head *next) > +{ > + return true; > +} > + > +bool __list_del_entry_valid(struct list_head *entry) > +{ > + return true; > +} > +#endif Can we get away with defining our own CHECK_DATA_CORRUPTION macro instead? Will _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel