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spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=desiato.20200630; h=Sender:Content-Transfer-Encoding :Content-Type:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References:Message-ID: Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=GFbrmYudn+2E1JWZ/ag2M0E9CILjcQQJsct1t2rkM9c=; b=IGoCnHGjHwlmp8jiGqWbsx3z4 4Fn4ubpD0o94RT2RgoiIN51rf0bOotTafADSTEyWzLeY7enDnSOafMfWhNa1JKu7Y6GvpNjCrj0Cv 9jbp5hN3miywqr5R8iLrAdbcMEdN8am9bNCeMcoBegmpqmussPXXARei5C42UeuX9TSSDyPqF9KGC 7ueLEMJaPH+xLUqk3NjuBL3nc0TSuhc8tZ0hT7COLxc2GiKhdm9MeY+jIPAg4hRpEsHh9RQ9k72Ka vnoBhp/BLIEVttXG0AgoC/lXLZQXk4MyjsHxUMSkcg+CYE4YJIajuNh6WRuUGjFCYT4scqoZzrMgM 1CTZLM4ag==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lMsnx-005Nw6-8p; Thu, 18 Mar 2021 13:35:13 +0000 Received: from mail.kernel.org ([198.145.29.99]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lMsnt-005Nv0-GX for linux-arm-kernel@lists.infradead.org; Thu, 18 Mar 2021 13:35:11 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id D883564E27; Thu, 18 Mar 2021 13:35:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1616074508; bh=drwRf6r5gnk51sjNwKIMpcBEidEESTQ50krX8/oftAk=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=eSRCQ+nrd6zWoS6wyFcVqCQno3fU8dhLOCqJSWq8Ak1J3eJEk85IiRVXzq6SNPE1l zRAEpM7cU5pWB503cpw5/9Mba59eGThFxIvximWdMXTJ3pLdvahh6aNcSMNLv5RGW/ Dvi98vIMIxfqqFq+G1J8O98aOUuNnHAFDSUI7Elzu4EAg6Xn0VYRnAU67EFHT28Baf m0iDMHkBuK+F95qFt6F6YTNqEMHG3ZFeaXC5Kj4AJPFhttg1G5lSDELtO9lLKSwkXu +6/oAK99CIIobz4Om4PlXwX0yzHGqbz2H4nurU1mDJ7u9uG14zO5F0EC2BPdytYaYm HrzmvF3p/CwyA== Date: Thu, 18 Mar 2021 13:35:02 +0000 From: Will Deacon To: Marc Zyngier Cc: kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org, dave.martin@arm.com, daniel.kiss@arm.com, Catalin Marinas , James Morse , Julien Thierry , Suzuki K Poulose , broonie@kernel.org, ascull@google.com, qperret@google.com, kernel-team@android.com Subject: Re: [PATCH v2 07/11] KVM: arm64: Map SVE context at EL2 when available Message-ID: <20210318133502.GD7055@willie-the-truck> References: <20210318122532.505263-1-maz@kernel.org> <20210318122532.505263-8-maz@kernel.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210318122532.505263-8-maz@kernel.org> 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-20210318_133509_739446_2F87DD43 X-CRM114-Status: GOOD ( 14.44 ) 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 On Thu, Mar 18, 2021 at 12:25:28PM +0000, Marc Zyngier wrote: > When running on nVHE, and that the vcpu supports SVE, map the > SVE state at EL2 so that KVM can access it. > > Signed-off-by: Marc Zyngier > --- > arch/arm64/kvm/fpsimd.c | 11 +++++++++++ > 1 file changed, 11 insertions(+) > > diff --git a/arch/arm64/kvm/fpsimd.c b/arch/arm64/kvm/fpsimd.c > index b7e36a506d3d..3c37a419fa82 100644 > --- a/arch/arm64/kvm/fpsimd.c > +++ b/arch/arm64/kvm/fpsimd.c > @@ -43,6 +43,17 @@ int kvm_arch_vcpu_run_map_fp(struct kvm_vcpu *vcpu) > if (ret) > goto error; > > + if (vcpu->arch.sve_state) { > + void *sve_end; > + > + sve_end = vcpu->arch.sve_state + vcpu_sve_state_size(vcpu); > + > + ret = create_hyp_mappings(vcpu->arch.sve_state, sve_end, > + PAGE_HYP); > + if (ret) > + goto error; > + } Acked-by: Will Deacon Will _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel