From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:45445) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YWEYx-0001kk-RM for qemu-devel@nongnu.org; Thu, 12 Mar 2015 21:38:56 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YWEYw-0004d3-Nm for qemu-devel@nongnu.org; Thu, 12 Mar 2015 21:38:55 -0400 Received: from mx1.redhat.com ([209.132.183.28]:58807) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YWEYw-0004ca-GY for qemu-devel@nongnu.org; Thu, 12 Mar 2015 21:38:54 -0400 Received: from int-mx13.intmail.prod.int.phx2.redhat.com (int-mx13.intmail.prod.int.phx2.redhat.com [10.5.11.26]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id t2D1crTh020519 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL) for ; Thu, 12 Mar 2015 21:38:54 -0400 From: Fam Zheng Date: Fri, 13 Mar 2015 09:38:43 +0800 Message-Id: <1426210723-16735-5-git-send-email-famz@redhat.com> In-Reply-To: <1426210723-16735-1-git-send-email-famz@redhat.com> References: <1426210723-16735-1-git-send-email-famz@redhat.com> Subject: [Qemu-devel] [PATCH v2 4/4] dma-helpers: Move reschedule_dma BH to blk's AioContext List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Paolo Bonzini That if the dbs' owner is an iothread, dma should be resumed on the right thread. In this case it is the AioContext of the block device. Signed-off-by: Fam Zheng --- dma-helpers.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/dma-helpers.c b/dma-helpers.c index 6918572..84f61a7 100644 --- a/dma-helpers.c +++ b/dma-helpers.c @@ -95,8 +95,10 @@ static void reschedule_dma(void *opaque) static void continue_after_map_failure(void *opaque) { DMAAIOCB *dbs = (DMAAIOCB *)opaque; + AioContext *ctx; - dbs->bh = qemu_bh_new(reschedule_dma, dbs); + ctx = blk_get_aio_context(dbs->blk); + dbs->bh = aio_bh_new(ctx, reschedule_dma, dbs); qemu_bh_schedule(dbs->bh); } -- 1.9.3