From patchwork Thu May 10 09:15:16 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Durrant X-Patchwork-Id: 10391443 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id D8AE76053D for ; Thu, 10 May 2018 09:17:39 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C5E3A289B5 for ; Thu, 10 May 2018 09:17:39 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id BAA0A289B7; Thu, 10 May 2018 09:17:39 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 2DABB289B5 for ; Thu, 10 May 2018 09:17:39 +0000 (UTC) Received: from localhost ([::1]:60889 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fGhhi-000550-El for patchwork-qemu-devel@patchwork.kernel.org; Thu, 10 May 2018 05:17:38 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:41765) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fGhfb-0004Bv-SC for qemu-devel@nongnu.org; Thu, 10 May 2018 05:15:29 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fGhfa-0002N1-4t for qemu-devel@nongnu.org; Thu, 10 May 2018 05:15:27 -0400 Received: from smtp03.citrix.com ([162.221.156.55]:30404) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fGhfZ-0002Km-Do for qemu-devel@nongnu.org; Thu, 10 May 2018 05:15:25 -0400 X-IronPort-AV: E=Sophos;i="5.49,384,1520899200"; d="scan'208";a="54185064" From: Paul Durrant To: , Date: Thu, 10 May 2018 10:15:16 +0100 Message-ID: <20180510091518.28199-2-paul.durrant@citrix.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20180510091518.28199-1-paul.durrant@citrix.com> References: <20180510091518.28199-1-paul.durrant@citrix.com> MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 162.221.156.55 Subject: [Qemu-devel] [PATCH v2 1/3] xen-hvm: create separate function for ioreq server initialization X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Anthony Perard , Paul Durrant , Stefano Stabellini Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP The code is sufficiently substantial that it improves code readability to put it in a new function called by xen_hvm_init() rather than having it inline. Signed-off-by: Paul Durrant Reviewed-by: Anthony PERARD --- Cc: Stefano Stabellini Cc: Anthony Perard --- hw/i386/xen/xen-hvm.c | 76 +++++++++++++++++++++++++++++++-------------------- 1 file changed, 46 insertions(+), 30 deletions(-) diff --git a/hw/i386/xen/xen-hvm.c b/hw/i386/xen/xen-hvm.c index caa563be3d..6ffa3c22cc 100644 --- a/hw/i386/xen/xen-hvm.c +++ b/hw/i386/xen/xen-hvm.c @@ -95,7 +95,8 @@ typedef struct XenIOState { CPUState **cpu_by_vcpu_id; /* the evtchn port for polling the notification, */ evtchn_port_t *ioreq_local_port; - /* evtchn local port for buffered io */ + /* evtchn remote and local ports for buffered io */ + evtchn_port_t bufioreq_remote_port; evtchn_port_t bufioreq_local_port; /* the evtchn fd for polling */ xenevtchn_handle *xce_handle; @@ -1236,12 +1237,52 @@ static void xen_wakeup_notifier(Notifier *notifier, void *data) xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 0); } -void xen_hvm_init(PCMachineState *pcms, MemoryRegion **ram_memory) +static int xen_map_ioreq_server(XenIOState *state) { - int i, rc; xen_pfn_t ioreq_pfn; xen_pfn_t bufioreq_pfn; evtchn_port_t bufioreq_evtchn; + int rc; + + rc = xen_get_ioreq_server_info(xen_domid, state->ioservid, + &ioreq_pfn, &bufioreq_pfn, + &bufioreq_evtchn); + if (rc < 0) { + error_report("failed to get ioreq server info: error %d handle=%p", + errno, xen_xc); + return rc; + } + + DPRINTF("shared page at pfn %lx\n", ioreq_pfn); + DPRINTF("buffered io page at pfn %lx\n", bufioreq_pfn); + DPRINTF("buffered io evtchn is %x\n", bufioreq_evtchn); + + state->shared_page = xenforeignmemory_map(xen_fmem, xen_domid, + PROT_READ | PROT_WRITE, + 1, &ioreq_pfn, NULL); + if (state->shared_page == NULL) { + error_report("map shared IO page returned error %d handle=%p", + errno, xen_xc); + return -1; + } + + state->buffered_io_page = xenforeignmemory_map(xen_fmem, xen_domid, + PROT_READ | PROT_WRITE, + 1, &bufioreq_pfn, NULL); + if (state->buffered_io_page == NULL) { + error_report("map buffered IO page returned error %d", errno); + return -1; + } + + state->bufioreq_remote_port = bufioreq_evtchn; + + return 0; +} + +void xen_hvm_init(PCMachineState *pcms, MemoryRegion **ram_memory) +{ + int i, rc; + xen_pfn_t ioreq_pfn; XenIOState *state; state = g_malloc0(sizeof (XenIOState)); @@ -1269,25 +1310,8 @@ void xen_hvm_init(PCMachineState *pcms, MemoryRegion **ram_memory) state->wakeup.notify = xen_wakeup_notifier; qemu_register_wakeup_notifier(&state->wakeup); - rc = xen_get_ioreq_server_info(xen_domid, state->ioservid, - &ioreq_pfn, &bufioreq_pfn, - &bufioreq_evtchn); + rc = xen_map_ioreq_server(state); if (rc < 0) { - error_report("failed to get ioreq server info: error %d handle=%p", - errno, xen_xc); - goto err; - } - - DPRINTF("shared page at pfn %lx\n", ioreq_pfn); - DPRINTF("buffered io page at pfn %lx\n", bufioreq_pfn); - DPRINTF("buffered io evtchn is %x\n", bufioreq_evtchn); - - state->shared_page = xenforeignmemory_map(xen_fmem, xen_domid, - PROT_READ|PROT_WRITE, - 1, &ioreq_pfn, NULL); - if (state->shared_page == NULL) { - error_report("map shared IO page returned error %d handle=%p", - errno, xen_xc); goto err; } @@ -1308,14 +1332,6 @@ void xen_hvm_init(PCMachineState *pcms, MemoryRegion **ram_memory) goto err; } - state->buffered_io_page = xenforeignmemory_map(xen_fmem, xen_domid, - PROT_READ|PROT_WRITE, - 1, &bufioreq_pfn, NULL); - if (state->buffered_io_page == NULL) { - error_report("map buffered IO page returned error %d", errno); - goto err; - } - /* Note: cpus is empty at this point in init */ state->cpu_by_vcpu_id = g_malloc0(max_cpus * sizeof(CPUState *)); @@ -1340,7 +1356,7 @@ void xen_hvm_init(PCMachineState *pcms, MemoryRegion **ram_memory) } rc = xenevtchn_bind_interdomain(state->xce_handle, xen_domid, - bufioreq_evtchn); + state->bufioreq_remote_port); if (rc == -1) { error_report("buffered evtchn bind error %d", errno); goto err;