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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 6E42FC04FCD for ; Wed, 20 Sep 2023 18:18:30 +0000 (UTC) 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=2CiSHkOgJvuX3GeQfuqw5ZsEtHThojBGkyvzMq9Z2cw=; b=DWACTOeqUc1ekM P0x1ByfH2QWNMRi33iRWLPvDDP0+t/AGPGIN2YHuMI6nG4g8/UJo9nRsqam8yyjSiQv8qxwO8EUlB qsaU9uZt0EgZRrgGFk0d/sy/FuNf923QEV/hMcwZsN9R30ysQoPGNCGuudsNIayPsIz0kaDrV5aIv +w7pwE+fXjPxBGoPsNvugPXvJ1MW/zBKtqJypFQVdULl6Egb7tiNhQQHvYMHRYmVLHfgXrr+hbQTz UxEdCuB18xxkybmSayvL+bm5HuDM19fz2G0T+6s5OhF4YdQQ9qywBHbiG8hiAA5mMko4Nqw913nvW EH4u9+I/S4to+GjUHUKw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qj1m3-003pye-11; Wed, 20 Sep 2023 18:18:07 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qj1le-003pmu-2q for linux-arm-kernel@lists.infradead.org; Wed, 20 Sep 2023 18:17:46 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 5AEE861DC4; Wed, 20 Sep 2023 18:17:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C1AFCC433C9; Wed, 20 Sep 2023 18:17:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1695233860; bh=eAFhYdYPK7xFl+776FskY4IDP549/3Ym7n8sQg2d9bM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=iop30yaCZsWLzwY0A/VUzzh9MyQHiCFXiAoutqtG0GtJedsiZiAj2R5knpMqb9nmY ynUQtJxyWMkWd5z4QPsi1wg4LqO6PauQYn4OPRDtilO50ZYNUVVuPN2pzPNM3mu6sK ioFNQEqvKk0hJUUCaz77F2B+gquk9lyWQ6uToWFhaXLws9R2t9/2p3tiSORpespo0d 9jIgphjpQCzw1xZG4XOQG82B5nTlN1lqYKClEODnplkoWSxi9zilYqjvkkN3SfWom8 t/4XXpoNEUeK1xBTphto1MBrTVqTW1yqbzf0EkUCz8U4+TAjPSMtEACTvclnLUokmv zMgIBoFp3mbjw== Received: from sofa.misterjones.org ([185.219.108.64] helo=valley-girl.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1qj1la-00Ejx0-U0; Wed, 20 Sep 2023 19:17:38 +0100 From: Marc Zyngier To: kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org Cc: James Morse , Suzuki K Poulose , Oliver Upton , Zenghui Yu , Joey Gouly , Shameerali Kolothum Thodi , Xu Zhao , Eric Auger Subject: [PATCH v2 09/11] KVM: arm64: Fast-track kvm_mpidr_to_vcpu() when mpidr_data is available Date: Wed, 20 Sep 2023 19:17:29 +0100 Message-Id: <20230920181731.2232453-10-maz@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230920181731.2232453-1-maz@kernel.org> References: <20230920181731.2232453-1-maz@kernel.org> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org, james.morse@arm.com, suzuki.poulose@arm.com, oliver.upton@linux.dev, yuzenghui@huawei.com, joey.gouly@arm.com, shameerali.kolothum.thodi@huawei.com, zhaoxu.35@bytedance.com, eric.auger@redhat.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-20230920_111743_012434_C847A47C X-CRM114-Status: GOOD ( 12.95 ) 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 If our fancy little table is present when calling kvm_mpidr_to_vcpu(), use it to recover the corresponding vcpu. Reviewed-by: Joey Gouly Tested-by: Joey Gouly Tested-by: Shameer Kolothum Signed-off-by: Marc Zyngier --- arch/arm64/kvm/arm.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index d9de4d3a339c..28f3940fa724 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -2395,6 +2395,18 @@ struct kvm_vcpu *kvm_mpidr_to_vcpu(struct kvm *kvm, unsigned long mpidr) unsigned long i; mpidr &= MPIDR_HWID_BITMASK; + + if (kvm->arch.mpidr_data) { + u16 idx = kvm_mpidr_index(kvm->arch.mpidr_data, mpidr); + + vcpu = kvm_get_vcpu(kvm, + kvm->arch.mpidr_data->cmpidr_to_idx[idx]); + if (mpidr != kvm_vcpu_get_mpidr_aff(vcpu)) + vcpu = NULL; + + return vcpu; + } + kvm_for_each_vcpu(i, vcpu, kvm) { if (mpidr == kvm_vcpu_get_mpidr_aff(vcpu)) return vcpu; -- 2.34.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel