Message ID | 20231018123643.1255813-2-benjamin@sipsolutions.net |
---|---|
State | Needs Review / ACK |
Headers | show
Return-Path: <linux-um-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org> X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; secure) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=k9lqUXJN; dkim=fail reason="signature verification failed" (2048-bit key; secure) header.d=sipsolutions.net header.i=@sipsolutions.net header.a=rsa-sha256 header.s=mail header.b=pWDHdBuL; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=none (no SPF record) smtp.mailfrom=lists.infradead.org (client-ip=2607:7c80:54:3::133; helo=bombadil.infradead.org; envelope-from=linux-um-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org; receiver=patchwork.ozlabs.org) Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1) server-digest SHA384) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4S9VjK1G5jz20cx for <incoming@patchwork.ozlabs.org>; Wed, 18 Oct 2023 23:37:09 +1100 (AEDT) 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=hQ5lv7/Ko7Ozv3fqUNdC1gQ84iYiNnifhZslHiPgft0=; b=k9lqUXJNlZS9Eh i+PfXDJ8Oiqrn2Ko9Wxb2aCVX1iDWv/zfhCT+c6gUgafkHowvF7zRqiZs10m+AdDvvioho7Ct3wt6 zlz20uGLrKBu4jqovuPkKZLxGmGpcKHdwWG104Mjy0fHDd8LUk44UF4dMI0H32ZBO5Fiiyvu/B4Fo f8+o5n0OeoQHdum5kJ702Ejn59YBDaaRY++uFTjxiV0MeFZXR/cjKJ8OxFPCoTQ1BlY+XD9mGBkKD hDiVbiHYYSNPZ4HJFyqzdkHCnd7HgZGChYrmAvRdLLOYmPK/GaK4c2jAVDrJ2rpUIR5XFgv/2Cymu 5EFNU2qUE2zBG9CvOKlg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qt5nJ-00Eg3w-2T; Wed, 18 Oct 2023 12:37:01 +0000 Received: from s3.sipsolutions.net ([2a01:4f8:242:246e::2] helo=sipsolutions.net) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qt5nG-00Eg14-1u for linux-um@lists.infradead.org; Wed, 18 Oct 2023 12:36:59 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sipsolutions.net; s=mail; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Content-Type:Sender :Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-To: Resent-Cc:Resent-Message-ID; bh=Q1BmknCBL/yQO2Xrd0cjBKupVqUkFC+5wO8f3I4HGD4=; t=1697632617; x=1698842217; b=pWDHdBuLhtv6iLQVSK10lLQUa5s4vOf/sWfXqHkmoc+8sKb wOfWsV2XGvK9QIaGO1NWPWiXUU3ohg/9X4h1vzWKWCTJ1lOMPUEys9iKYb9Wx8BL70PM9TM0YkYJf I73JRGi5i9PrSLJbOFuC4tI4eeB3M725a3dcbpcTukN8MFDSRnWVHJAQRBB3dYL5zBh+nzJ2aJntz o1+95gGsRcxjxvyizONE63q4UA9FI39NqAwu6wMAWbhunVcdHtwCifzDb3ZbnSC4WaZW7KfQP76ur BZvhdUgXw22agu6tv/cJ5OyiiHz7TGJBAYlLt78tie8slGkfV4s415R0piHp5qUg==; Received: by sipsolutions.net with esmtpsa (TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim 4.97-RC1) (envelope-from <benjamin@sipsolutions.net>) id 1qt5nC-0000000Bo1V-1sJ3; Wed, 18 Oct 2023 14:36:54 +0200 From: benjamin@sipsolutions.net To: linux-um@lists.infradead.org Cc: Benjamin Berg <benjamin.berg@intel.com> Subject: [PATCH 2/4] um: chan_user: catch EINTR when reading and writing Date: Wed, 18 Oct 2023 14:36:41 +0200 Message-ID: <20231018123643.1255813-2-benjamin@sipsolutions.net> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231018123643.1255813-1-benjamin@sipsolutions.net> References: <20231018123643.1255813-1-benjamin@sipsolutions.net> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231018_053658_627944_8C65E419 X-CRM114-Status: GOOD ( 11.06 ) X-Spam-Score: -0.2 (/) X-Spam-Report: Spam detection software, running on the system "bombadil.infradead.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: From: Benjamin Berg <benjamin.berg@intel.com> If the read/write function returns an error then we expect to see an event/IRQ later on. However, this will only happen after an EAGAIN as we are using edge based event triggering. 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Series |
[1/4] um: irqs: process outstanding IRQs when unblocking signals
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diff --git a/arch/um/drivers/chan_user.c b/arch/um/drivers/chan_user.c index 25727ed648b7..29c68820522a 100644 --- a/arch/um/drivers/chan_user.c +++ b/arch/um/drivers/chan_user.c @@ -23,7 +23,7 @@ int generic_read(int fd, char *c_out, void *unused) { int n; - n = read(fd, c_out, sizeof(*c_out)); + CATCH_EINTR(n = read(fd, c_out, sizeof(*c_out))); if (n > 0) return n; else if (n == 0) @@ -39,7 +39,7 @@ int generic_write(int fd, const char *buf, int n, void *unused) { int err; - err = write(fd, buf, n); + CATCH_EINTR(err = write(fd, buf, n)); if (err > 0) return err; else if (errno == EAGAIN)