From nobody Fri Dec 19 20:13:29 2025 Received: from out-174.mta1.migadu.com (out-174.mta1.migadu.com [95.215.58.174]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9841123774 for ; Tue, 13 Feb 2024 09:33:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.174 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707816803; cv=none; b=clduAflXqjQFB7ljz0PKZxONJZYRkds6xdMNsUsFnMPfsK98aHxCbXbdMoV2gTBRs5jUYmX18n2nbdUkHInfjr6U2bpT7pktdtcubTEeHCKkTji4C4o84gM8S87ldY9Bj5+u+iPsnEDtYni2PJ5/wT07tLNh9+RiMjcqavs8qtI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707816803; c=relaxed/simple; bh=42EjqTJnQjPHCRZ1CTq/hh9Jo/BrHMISVzmWYzrxSIE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=dUI4K+v8ZyLXLoshpiJoRTiKhp9lth6+Isu5ISxRcG5i7PfOwXSx1hJYLmlPurOBiZdjbdv6aQ54iYxNrRqHwS123Tn8nwV1tu7QhlXuGBNOx35DFtVtgY0yxFkvvc6gHvE8ef/4WPuUMy/Pp+tPQGYXcU0ybi5pfPIIRt7JBrw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=Ycl6rikb; arc=none smtp.client-ip=95.215.58.174 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="Ycl6rikb" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1707816800; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=vHotxBfo61Yf7VQTBp6voheJpujlHBDNO8X85Tkwjh0=; b=Ycl6rikbVAanKCNVreZMOwzDdQAIGD1dS+LPBIe7vQ1Sq5OcJDWhFjgF6M0OGCEBYC8Y7K ur7EsSz3WhyVCtrbPd2w9FWmNVdhshL4P9hcDsTwqyO5b4Che0EBVeFD9PRcxND2ZPnec+ cRTQI5/mj2t502UjVNydFjb1qWzhh50= From: Oliver Upton To: kvmarm@lists.linux.dev Cc: kvm@vger.kernel.org, Marc Zyngier , James Morse , Suzuki K Poulose , Zenghui Yu , linux-kernel@vger.kernel.org, Oliver Upton Subject: [PATCH v2 04/23] KVM: arm64: vgic-v3: Iterate the xarray to find pending LPIs Date: Tue, 13 Feb 2024 09:32:41 +0000 Message-ID: <20240213093250.3960069-5-oliver.upton@linux.dev> In-Reply-To: <20240213093250.3960069-1-oliver.upton@linux.dev> References: <20240213093250.3960069-1-oliver.upton@linux.dev> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Migadu-Flow: FLOW_OUT Content-Type: text/plain; charset="utf-8" Start walking the LPI xarray to find pending LPIs in preparation for the removal of the LPI linked-list. Note that the 'basic' iterator is chosen here as each iteration needs to drop the xarray read lock (RCU) as reads/writes to guest memory can potentially block. Signed-off-by: Oliver Upton --- arch/arm64/kvm/vgic/vgic-v3.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/arm64/kvm/vgic/vgic-v3.c b/arch/arm64/kvm/vgic/vgic-v3.c index 9465d3706ab9..4ea3340786b9 100644 --- a/arch/arm64/kvm/vgic/vgic-v3.c +++ b/arch/arm64/kvm/vgic/vgic-v3.c @@ -380,6 +380,7 @@ int vgic_v3_save_pending_tables(struct kvm *kvm) struct vgic_irq *irq; gpa_t last_ptr =3D ~(gpa_t)0; bool vlpi_avail =3D false; + unsigned long index; int ret =3D 0; u8 val; =20 @@ -396,7 +397,7 @@ int vgic_v3_save_pending_tables(struct kvm *kvm) vlpi_avail =3D true; } =20 - list_for_each_entry(irq, &dist->lpi_list_head, lpi_list) { + xa_for_each(&dist->lpi_xa, index, irq) { int byte_offset, bit_nr; struct kvm_vcpu *vcpu; gpa_t pendbase, ptr; --=20 2.43.0.687.g38aa6559b0-goog