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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (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 7EF5EC433FE for ; Fri, 11 Nov 2022 14:10:30 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4N80wP19ywz3fQK for ; Sat, 12 Nov 2022 01:10:29 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; secure) header.d=linutronix.de header.i=@linutronix.de header.a=rsa-sha256 header.s=2020 header.b=OGgspOZe; dkim=fail reason="signature verification failed" header.d=linutronix.de header.i=@linutronix.de header.a=ed25519-sha256 header.s=2020e header.b=sIAyS0gB; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=linutronix.de (client-ip=2a0a:51c0:0:12e:550::1; helo=galois.linutronix.de; envelope-from=tglx@linutronix.de; receiver=) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; secure) header.d=linutronix.de header.i=@linutronix.de header.a=rsa-sha256 header.s=2020 header.b=OGgspOZe; dkim=pass header.d=linutronix.de header.i=@linutronix.de header.a=ed25519-sha256 header.s=2020e header.b=sIAyS0gB; dkim-atps=neutral Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4N80hN22MQz3dvW for ; Sat, 12 Nov 2022 01:00:04 +1100 (AEDT) Message-ID: <20221111122013.888850936@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1668174862; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: references:references; bh=efOtDMgGZtrOq2C93xDB3bkE3dnMFMUi6PhL2K3F+Xc=; b=OGgspOZeBC55SSE4L/03t3Yj8kEAUvaCDyesgMfIQ/8qhXJLoIiwTqSD0usnmt+jNWsGxe jJQIhOK2glpk+B7OSR+bSxnJRrGYjm7l6+v8O35MDAj8CaLu4GeF+phCjLDtbCTxh5572M +ZpPJAvMXeUjr0mPgIt+9+snp1r51HIvN8aPT4w0auBrP/NkfAAUYZzp759bwdCn1Kq78A lb32ySTfELSWx1/+L0w3PdN47RZdW50J4E5gvQQfzie7ob1/CZlWpi2e3Wn5ebKYWS0ZtB zSBgFrBCzs8wHVGv86iPTFC38nFfQbhWVVsDO/a8gXoX8MLGY2aFp0qzQ9nWRA== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1668174862; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: references:references; bh=efOtDMgGZtrOq2C93xDB3bkE3dnMFMUi6PhL2K3F+Xc=; b=sIAyS0gBMPiZE7rx+h8POgBoJq70Rx877SA8g16n791fowonYh2meMpqEAwdbzM0ajaQbK ljBVTKfudKOlfWCg== From: Thomas Gleixner To: LKML Subject: [patch 05/39] genirq/msi: Remove filter from msi_free_descs_free_range() References: <20221111120501.026511281@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Date: Fri, 11 Nov 2022 14:54:22 +0100 (CET) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-pci@vger.kernel.org, Will Deacon , Lorenzo Pieralisi , Dave Jiang , Ashok Raj , Joerg Roedel , x86@kernel.org, Jason Gunthorpe , Allen Hubbe , Kevin Tian , "Ahmed S. Darwish" , Jon Mason , linuxppc-dev@lists.ozlabs.org, Alex Williamson , Bjorn Helgaas , Dan Williams , Reinette Chatre , Greg Kroah-Hartman , Marc Zyngier , Logan Gunthorpe Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" When a range of descriptors is freed then all of them are not associated to a linux interrupt. Remove the filter and add a warning to the free function. Signed-off-by: Thomas Gleixner --- drivers/base/platform-msi.c | 2 +- include/linux/msi.h | 5 ++--- kernel/irq/msi.c | 19 ++++++++++--------- 3 files changed, 13 insertions(+), 13 deletions(-) --- a/drivers/base/platform-msi.c +++ b/drivers/base/platform-msi.c @@ -325,7 +325,7 @@ void platform_msi_device_domain_free(str msi_lock_descs(data->dev); irq_domain_free_irqs_common(domain, virq, nr_irqs); - msi_free_msi_descs_range(data->dev, MSI_DESC_ALL, virq, virq + nr_irqs - 1); + msi_free_msi_descs_range(data->dev, virq, virq + nr_irqs - 1); msi_unlock_descs(data->dev); } --- a/include/linux/msi.h +++ b/include/linux/msi.h @@ -247,8 +247,7 @@ static inline void pci_write_msi_msg(uns #endif /* CONFIG_PCI_MSI */ int msi_add_msi_desc(struct device *dev, struct msi_desc *init_desc); -void msi_free_msi_descs_range(struct device *dev, enum msi_desc_filter filter, - unsigned int first_index, unsigned int last_index); +void msi_free_msi_descs_range(struct device *dev, unsigned int first_index, unsigned int last_index); /** * msi_free_msi_descs - Free MSI descriptors of a device @@ -256,7 +255,7 @@ void msi_free_msi_descs_range(struct dev */ static inline void msi_free_msi_descs(struct device *dev) { - msi_free_msi_descs_range(dev, MSI_DESC_ALL, 0, MSI_MAX_INDEX); + msi_free_msi_descs_range(dev, 0, MSI_MAX_INDEX); } void __pci_read_msi_msg(struct msi_desc *entry, struct msi_msg *msg); --- a/kernel/irq/msi.c +++ b/kernel/irq/msi.c @@ -120,7 +120,7 @@ static int msi_add_simple_msi_descs(stru fail_mem: ret = -ENOMEM; fail: - msi_free_msi_descs_range(dev, MSI_DESC_ALL, index, last); + msi_free_msi_descs_range(dev, index, last); return ret; } @@ -141,12 +141,11 @@ static bool msi_desc_match(struct msi_de /** * msi_free_msi_descs_range - Free MSI descriptors of a device * @dev: Device to free the descriptors - * @filter: Descriptor state filter * @first_index: Index to start freeing from * @last_index: Last index to be freed */ -void msi_free_msi_descs_range(struct device *dev, enum msi_desc_filter filter, - unsigned int first_index, unsigned int last_index) +void msi_free_msi_descs_range(struct device *dev, unsigned int first_index, + unsigned int last_index) { struct xarray *xa = &dev->msi.data->__store; struct msi_desc *desc; @@ -155,10 +154,12 @@ void msi_free_msi_descs_range(struct dev lockdep_assert_held(&dev->msi.data->mutex); xa_for_each_range(xa, idx, desc, first_index, last_index) { - if (msi_desc_match(desc, filter)) { - xa_erase(xa, idx); - msi_free_desc(desc); - } + xa_erase(xa, idx); + + /* Leak the descriptor when it is still referenced */ + if (WARN_ON_ONCE(msi_desc_match(desc, MSI_DESC_ASSOCIATED))) + continue; + msi_free_desc(desc); } } @@ -739,7 +740,7 @@ int msi_domain_populate_irqs(struct irq_ fail: for (--virq; virq >= virq_base; virq--) irq_domain_free_irqs_common(domain, virq, 1); - msi_free_msi_descs_range(dev, MSI_DESC_ALL, virq_base, virq_base + nvec - 1); + msi_free_msi_descs_range(dev, virq_base, virq_base + nvec - 1); unlock: msi_unlock_descs(dev); return ret;