From patchwork Wed Apr 20 15:09:29 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?SsO8cmdlbiBHcm/Dnw==?= X-Patchwork-Id: 12820441 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.xenproject.org (lists.xenproject.org [192.237.175.120]) (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 6C1B0C433FE for ; Wed, 20 Apr 2022 15:10:16 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.309351.525525 (Exim 4.92) (envelope-from ) id 1nhBxz-0004cF-T2; Wed, 20 Apr 2022 15:10:03 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 309351.525525; Wed, 20 Apr 2022 15:10:03 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1nhBxz-0004bN-KN; Wed, 20 Apr 2022 15:10:03 +0000 Received: by outflank-mailman (input) for mailman id 309351; Wed, 20 Apr 2022 15:10:01 +0000 Received: from se1-gles-sth1-in.inumbo.com ([159.253.27.254] helo=se1-gles-sth1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1nhBxx-0003l4-MO for xen-devel@lists.xenproject.org; Wed, 20 Apr 2022 15:10:01 +0000 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) by se1-gles-sth1.inumbo.com (Halon) with ESMTPS id f247eda1-c0bb-11ec-a405-831a346695d4; Wed, 20 Apr 2022 17:09:59 +0200 (CEST) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id A9A2B2129B; Wed, 20 Apr 2022 15:09:59 +0000 (UTC) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 6D87713AD5; Wed, 20 Apr 2022 15:09:59 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id MJhzGUciYGJILQAAMHmgww (envelope-from ); Wed, 20 Apr 2022 15:09:59 +0000 X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: f247eda1-c0bb-11ec-a405-831a346695d4 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1650467399; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=tOhV6YQDouFKSF4kDrscgmAnoCYSHdFmpTsct9Kqzek=; b=M2CSLl0VqnHJJC0YsOCEQojyDKPkmBs5veLj38AgGdJxabAIf7h7XElPNlT4+0mo0+eBOj zKrOb0vmHAlVaH4Nbwvy1oILNfIjzCnCLFr0PRRGVQhPpjPeLu24cZScK/vIUcyE6IHG/O MNv+w8hsIg/uI1+QirFTAqLXtACWMas= From: Juergen Gross To: xen-devel@lists.xenproject.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Cc: Juergen Gross , Oleksandr Andrushchenko , David Airlie , Daniel Vetter Subject: [PATCH 05/18] xen/drm: switch xen_drm_front to use INVALID_GRANT_REF Date: Wed, 20 Apr 2022 17:09:29 +0200 Message-Id: <20220420150942.31235-6-jgross@suse.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220420150942.31235-1-jgross@suse.com> References: <20220420150942.31235-1-jgross@suse.com> MIME-Version: 1.0 Instead of using a private macro for an invalid grant reference use the common one. Signed-off-by: Juergen Gross --- drivers/gpu/drm/xen/xen_drm_front.h | 9 --------- drivers/gpu/drm/xen/xen_drm_front_evtchnl.c | 4 ++-- 2 files changed, 2 insertions(+), 11 deletions(-) diff --git a/drivers/gpu/drm/xen/xen_drm_front.h b/drivers/gpu/drm/xen/xen_drm_front.h index cefafe859aba..a987c78abe41 100644 --- a/drivers/gpu/drm/xen/xen_drm_front.h +++ b/drivers/gpu/drm/xen/xen_drm_front.h @@ -80,15 +80,6 @@ struct drm_pending_vblank_event; /* timeout in ms to wait for backend to respond */ #define XEN_DRM_FRONT_WAIT_BACK_MS 3000 -#ifndef GRANT_INVALID_REF -/* - * Note on usage of grant reference 0 as invalid grant reference: - * grant reference 0 is valid, but never exposed to a PV driver, - * because of the fact it is already in use/reserved by the PV console. - */ -#define GRANT_INVALID_REF 0 -#endif - struct xen_drm_front_info { struct xenbus_device *xb_dev; struct xen_drm_front_drm_info *drm_info; diff --git a/drivers/gpu/drm/xen/xen_drm_front_evtchnl.c b/drivers/gpu/drm/xen/xen_drm_front_evtchnl.c index 08b526eeec16..4006568b9e32 100644 --- a/drivers/gpu/drm/xen/xen_drm_front_evtchnl.c +++ b/drivers/gpu/drm/xen/xen_drm_front_evtchnl.c @@ -147,7 +147,7 @@ static void evtchnl_free(struct xen_drm_front_info *front_info, xenbus_free_evtchn(front_info->xb_dev, evtchnl->port); /* end access and free the page */ - if (evtchnl->gref != GRANT_INVALID_REF) + if (evtchnl->gref != INVALID_GRANT_REF) gnttab_end_foreign_access(evtchnl->gref, page); memset(evtchnl, 0, sizeof(*evtchnl)); @@ -168,7 +168,7 @@ static int evtchnl_alloc(struct xen_drm_front_info *front_info, int index, evtchnl->index = index; evtchnl->front_info = front_info; evtchnl->state = EVTCHNL_STATE_DISCONNECTED; - evtchnl->gref = GRANT_INVALID_REF; + evtchnl->gref = INVALID_GRANT_REF; page = get_zeroed_page(GFP_NOIO | __GFP_HIGH); if (!page) {