From patchwork Mon Jan 27 14:17:48 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Michael Tokarev X-Patchwork-Id: 13951438 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.gnu.org (lists.gnu.org [209.51.188.17]) (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 DD023C02191 for ; Mon, 27 Jan 2025 14:23:03 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tcPxK-00009n-As; Mon, 27 Jan 2025 09:19:14 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tcPxH-00007k-N8; Mon, 27 Jan 2025 09:19:11 -0500 Received: from isrv.corpit.ru ([86.62.121.231]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tcPxG-0002PY-89; Mon, 27 Jan 2025 09:19:11 -0500 Received: from localhost.tls.msk.ru (mjt.wg.tls.msk.ru [192.168.177.130]) by isrv.corpit.ru (Postfix) with ESMTP id 43950E0E34; Mon, 27 Jan 2025 17:18:40 +0300 (MSK) Received: by localhost.tls.msk.ru (Postfix, from userid 1000) id AD69E51DA9; Mon, 27 Jan 2025 17:18:03 +0300 (MSK) From: Michael Tokarev To: qemu-devel@nongnu.org Cc: qemu-stable@nongnu.org, Nicholas Piggin , =?utf-8?q?P?= =?utf-8?q?hilippe_Mathieu-Daud=C3=A9?= , "Michael S . Tsirkin" , Michael Tokarev Subject: [Stable-9.2.1 34/41] pci/msix: Fix msix pba read vector poll end calculation Date: Mon, 27 Jan 2025 17:17:48 +0300 Message-Id: <20250127141803.3514882-34-mjt@tls.msk.ru> X-Mailer: git-send-email 2.39.5 In-Reply-To: References: MIME-Version: 1.0 Received-SPF: pass client-ip=86.62.121.231; envelope-from=mjt@tls.msk.ru; helo=isrv.corpit.ru X-Spam_score_int: -68 X-Spam_score: -6.9 X-Spam_bar: ------ X-Spam_report: (-6.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_HI=-5, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Nicholas Piggin The end vector calculation has a bug that results in polling fewer than required vectors when reading at a non-zero offset in PBA memory. Fixes: bbef882cc193 ("msi: add API to get notified about pending bit poll") Signed-off-by: Nicholas Piggin Message-Id: <20241212120402.1475053-1-npiggin@gmail.com> Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin (cherry picked from commit 42e2a7a0ab23784e44fcb18369e06067abc89305) Signed-off-by: Michael Tokarev diff --git a/hw/pci/msix.c b/hw/pci/msix.c index 487e49834e..cc6e79ec67 100644 --- a/hw/pci/msix.c +++ b/hw/pci/msix.c @@ -250,7 +250,7 @@ static uint64_t msix_pba_mmio_read(void *opaque, hwaddr addr, PCIDevice *dev = opaque; if (dev->msix_vector_poll_notifier) { unsigned vector_start = addr * 8; - unsigned vector_end = MIN(addr + size * 8, dev->msix_entries_nr); + unsigned vector_end = MIN((addr + size) * 8, dev->msix_entries_nr); dev->msix_vector_poll_notifier(dev, vector_start, vector_end); }