Received: by mail.netbsd.org (Postfix, from userid 605) id 7D5E284DBE; Tue, 21 Apr 2020 13:56:19 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by mail.netbsd.org (Postfix) with ESMTP id CDCB384DB9 for ; Tue, 21 Apr 2020 13:56:18 +0000 (UTC) X-Virus-Scanned: amavisd-new at netbsd.org Received: from mail.netbsd.org ([IPv6:::1]) by localhost (mail.netbsd.org [IPv6:::1]) (amavisd-new, port 10025) with ESMTP id 3RsgrU9ZEWaY for ; Tue, 21 Apr 2020 13:56:18 +0000 (UTC) Received: from cvs.NetBSD.org (ivanova.NetBSD.org [IPv6:2001:470:a085:999:28c:faff:fe03:5984]) by mail.netbsd.org (Postfix) with ESMTP id 6AE7984CF1 for ; Tue, 21 Apr 2020 13:56:18 +0000 (UTC) Received: by cvs.NetBSD.org (Postfix, from userid 500) id 689F7FB27; Tue, 21 Apr 2020 13:56:18 +0000 (UTC) Content-Disposition: inline Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset="US-ASCII" MIME-Version: 1.0 Date: Tue, 21 Apr 2020 13:56:18 +0000 From: "Jaromir Dolecek" Subject: CVS commit: src/sys/arch/xen/xen To: source-changes@NetBSD.org X-Mailer: log_accum Message-Id: <20200421135618.689F7FB27@cvs.NetBSD.org> Sender: source-changes-owner@NetBSD.org List-Id: source-changes.NetBSD.org Precedence: bulk Reply-To: source-changes-d@NetBSD.org Mail-Reply-To: "Jaromir Dolecek" Mail-Followup-To: source-changes-d@NetBSD.org List-Unsubscribe: Module Name: src Committed By: jdolecek Date: Tue Apr 21 13:56:18 UTC 2020 Modified Files: src/sys/arch/xen/xen: xbdback_xenbus.c Log Message: add support for indirect segments, which makes it possible to pass up to MAXPHYS (implementation limit, interface allows more) using single request request using indirect segment requires 1 extra copy hypercall per request, but saves 2 shared memory hypercalls (map_grant/unmap_grant), so should be net performance boost due to less TLB flushing this also effectively doubles disk queue size for xbd(4) To generate a diff of this commit: cvs rdiff -u -r1.85 -r1.86 src/sys/arch/xen/xen/xbdback_xenbus.c Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files.