From patchwork Sat Mar 9 15:57:28 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Tokarev X-Patchwork-Id: 1910000 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TsSSB2wfvz1yWx for ; Sun, 10 Mar 2024 03:00:42 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1riz5M-0007Q8-9D; Sat, 09 Mar 2024 10:58:08 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1riz5G-0007NC-Gb; Sat, 09 Mar 2024 10:58:03 -0500 Received: from isrv.corpit.ru ([86.62.121.231]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1riz5D-0004JJ-6A; Sat, 09 Mar 2024 10:58:01 -0500 Received: from tsrv.corpit.ru (tsrv.tls.msk.ru [192.168.177.2]) by isrv.corpit.ru (Postfix) with ESMTP id 5577654532; Sat, 9 Mar 2024 18:58:39 +0300 (MSK) Received: from tls.msk.ru (mjt.wg.tls.msk.ru [192.168.177.130]) by tsrv.corpit.ru (Postfix) with SMTP id ECE42944C4; Sat, 9 Mar 2024 18:57:42 +0300 (MSK) Received: (nullmailer pid 1694674 invoked by uid 1000); Sat, 09 Mar 2024 15:57:29 -0000 From: Michael Tokarev To: qemu-devel@nongnu.org Cc: Thomas Huth , qemu-trivial@nongnu.org, Michael Tokarev Subject: [PULL 10/11] hw/mem/cxl_type3: Fix problem with g_steal_pointer() Date: Sat, 9 Mar 2024 18:57:28 +0300 Message-Id: <20240309155729.1694607-11-mjt@tls.msk.ru> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240309155729.1694607-1-mjt@tls.msk.ru> References: <20240309155729.1694607-1-mjt@tls.msk.ru> MIME-Version: 1.0 Received-SPF: pass client-ip=86.62.121.231; envelope-from=mjt@tls.msk.ru; helo=isrv.corpit.ru X-Spam_score_int: -68 X-Spam_score: -6.9 X-Spam_bar: ------ X-Spam_report: (-6.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_HI=-5, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Thomas Huth When setting GLIB_VERSION_MAX_ALLOWED to GLIB_VERSION_2_58 or higher, glib adds type safety checks to the g_steal_pointer() macro. This triggers errors in the ct3_build_cdat_entries_for_mr() function which uses the g_steal_pointer() for type-casting from one pointer type to the other (which also looks quite weird since the local pointers have all been declared with g_autofree though they are never freed here). Fix it by using a proper typecast instead. For making this possible, we have to remove the QEMU_PACKED attribute from some structs since GCC otherwise complains that the source and destination pointer might have different alignment restrictions. Removing the QEMU_PACKED should be fine here since the structs are already naturally aligned. Anyway, add some QEMU_BUILD_BUG_ON() statements to make sure that we've got the right sizes (without padding in the structs). Signed-off-by: Thomas Huth Reviewed-by: Jonathan Cameron Reviewed-by: Michael Tokarev Signed-off-by: Michael Tokarev --- hw/mem/cxl_type3.c | 24 ++++++++++++------------ include/hw/cxl/cxl_cdat.h | 9 ++++++--- 2 files changed, 18 insertions(+), 15 deletions(-) diff --git a/hw/mem/cxl_type3.c b/hw/mem/cxl_type3.c index e8801805b9..b679dfae1c 100644 --- a/hw/mem/cxl_type3.c +++ b/hw/mem/cxl_type3.c @@ -46,12 +46,12 @@ static void ct3_build_cdat_entries_for_mr(CDATSubHeader **cdat_table, int dsmad_handle, MemoryRegion *mr, bool is_pmem, uint64_t dpa_base) { - g_autofree CDATDsmas *dsmas = NULL; - g_autofree CDATDslbis *dslbis0 = NULL; - g_autofree CDATDslbis *dslbis1 = NULL; - g_autofree CDATDslbis *dslbis2 = NULL; - g_autofree CDATDslbis *dslbis3 = NULL; - g_autofree CDATDsemts *dsemts = NULL; + CDATDsmas *dsmas; + CDATDslbis *dslbis0; + CDATDslbis *dslbis1; + CDATDslbis *dslbis2; + CDATDslbis *dslbis3; + CDATDsemts *dsemts; dsmas = g_malloc(sizeof(*dsmas)); *dsmas = (CDATDsmas) { @@ -135,12 +135,12 @@ static void ct3_build_cdat_entries_for_mr(CDATSubHeader **cdat_table, }; /* Header always at start of structure */ - cdat_table[CT3_CDAT_DSMAS] = g_steal_pointer(&dsmas); - cdat_table[CT3_CDAT_DSLBIS0] = g_steal_pointer(&dslbis0); - cdat_table[CT3_CDAT_DSLBIS1] = g_steal_pointer(&dslbis1); - cdat_table[CT3_CDAT_DSLBIS2] = g_steal_pointer(&dslbis2); - cdat_table[CT3_CDAT_DSLBIS3] = g_steal_pointer(&dslbis3); - cdat_table[CT3_CDAT_DSEMTS] = g_steal_pointer(&dsemts); + cdat_table[CT3_CDAT_DSMAS] = (CDATSubHeader *)dsmas; + cdat_table[CT3_CDAT_DSLBIS0] = (CDATSubHeader *)dslbis0; + cdat_table[CT3_CDAT_DSLBIS1] = (CDATSubHeader *)dslbis1; + cdat_table[CT3_CDAT_DSLBIS2] = (CDATSubHeader *)dslbis2; + cdat_table[CT3_CDAT_DSLBIS3] = (CDATSubHeader *)dslbis3; + cdat_table[CT3_CDAT_DSEMTS] = (CDATSubHeader *)dsemts; } static int ct3_build_cdat_table(CDATSubHeader ***cdat_table, void *priv) diff --git a/include/hw/cxl/cxl_cdat.h b/include/hw/cxl/cxl_cdat.h index b44cefaad6..17a09066dc 100644 --- a/include/hw/cxl/cxl_cdat.h +++ b/include/hw/cxl/cxl_cdat.h @@ -82,7 +82,8 @@ typedef struct CDATDsmas { uint16_t reserved; uint64_t DPA_base; uint64_t DPA_length; -} QEMU_PACKED CDATDsmas; +} CDATDsmas; +QEMU_BUILD_BUG_ON(sizeof(CDATDsmas) != 24); /* Device Scoped Latency and Bandwidth Information Structure - CDAT Table 5 */ typedef struct CDATDslbis { @@ -95,7 +96,8 @@ typedef struct CDATDslbis { uint64_t entry_base_unit; uint16_t entry[3]; uint16_t reserved2; -} QEMU_PACKED CDATDslbis; +} CDATDslbis; +QEMU_BUILD_BUG_ON(sizeof(CDATDslbis) != 24); /* Device Scoped Memory Side Cache Information Structure - CDAT Table 6 */ typedef struct CDATDsmscis { @@ -122,7 +124,8 @@ typedef struct CDATDsemts { uint16_t reserved; uint64_t DPA_offset; uint64_t DPA_length; -} QEMU_PACKED CDATDsemts; +} CDATDsemts; +QEMU_BUILD_BUG_ON(sizeof(CDATDsemts) != 24); /* Switch Scoped Latency and Bandwidth Information Structure - CDAT Table 9 */ typedef struct CDATSslbisHeader {