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[2001:8b0:1d0::2]) by smtp.gmail.com with ESMTPSA id e16-20020adffc50000000b0031432c2fb95sm1936122wrs.88.2023.07.18.03.10.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Jul 2023 03:10:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1689675059; x=1692267059; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=Wn3orCfYiQNlOzy4aMUvAr7V1MDijNIj9bBoFb5Tw0g=; b=jH+owpc2YtTKxsdZrpxlld9/j0cWvCD8PVS+FFQdQ3LDYNzgkyOxqTMP3Y8NwaS48e fvOywByhqy7VwUxjvKl6533lGp2xURfFRoI45o4r613Wy67foldvTzts1tL7KJaO/EGW Zi8NUiQFPtKd/EPyG1xKxGHs41FDDLqYapzV5IzTcy69gNz4HtGJFdYmEevBpJRwpJeR S+U8i5eRMEcZkjnudpbBckbvUx4GV+3HA1ZQ/nTApVMP8HaC6USuI9gAV8lJjQJN6KTz 1IAcSOuv6veFjPcJ2/xQgDsd4MznyUTUwaNgKl6pr7m+fzfaMw6VUxWPUZFmfKEjiVp7 HgQg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1689675059; x=1692267059; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=Wn3orCfYiQNlOzy4aMUvAr7V1MDijNIj9bBoFb5Tw0g=; b=AAEu2N2CGHIL9k9pwT8lCZZC91FXA+G+u2FSSr3eKJGsAUZXaFtJH2jnBcBvzxzmk5 YisQtlxHYNjsKYYBzOYbaujW3+6DWmSoD64Q3VlpD8SnQnczE7ON4+nQfLJkwXsn6EE3 78bT4jEFeEEFPWHatVEJNJEnI6oMRzTBDUnwdICP2iueh47tVHM6Ub4C8XqGBmHGil4V Lo+6h4mkUVlEJfOncmD7Vmc7DPgjmu1NFN6pBCpFuEhATrN4+Su3egVbIO2MOKF5g2mm s0k+pMtuK1/Zu5/ofTkJCKoG/Mtun0OmxwM36tG20/Qw8t5wQ7k8wkhakyFsMKO05Gtd RLPA== X-Gm-Message-State: ABy/qLbYH36TGgqKKwVTphplJXZHWAugHzBEnF2sZq39qrL0GutsVZHs jkb9CRxFMAuWIB0GUg0DS98Bai61PtMglSMoI/w= X-Google-Smtp-Source: APBJJlFbD+yW8hNBRAKwt42PEnU+DBzn8GtCLLlEJPYE8sgQebIoEhdXvNC7MZ9FXCO1QXJjHlvMXA== X-Received: by 2002:a05:6000:90e:b0:314:37ac:c896 with SMTP id cw14-20020a056000090e00b0031437acc896mr15494938wrb.44.1689675059420; Tue, 18 Jul 2023 03:10:59 -0700 (PDT) From: Peter Maydell To: qemu-devel@nongnu.org Cc: Stefano Stabellini , Anthony Perard , Paul Durrant , David Woodhouse Subject: [PATCH for-8.1] xen: Don't pass MemoryListener around by value Date: Tue, 18 Jul 2023 11:10:57 +0100 Message-Id: <20230718101057.1110979-1-peter.maydell@linaro.org> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::42a; envelope-from=peter.maydell@linaro.org; helo=mail-wr1-x42a.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1689675127050100001 Content-Type: text/plain; charset="utf-8" Coverity points out (CID 1513106, 1513107) that MemoryListener is a 192 byte struct which we are passing around by value. Switch to passing a const pointer into xen_register_ioreq() and then to xen_do_ioreq_register(). We can also make the file-scope MemoryListener variables const, since nothing changes them. Signed-off-by: Peter Maydell Acked-by: Anthony PERARD Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- Disclaimer: I have not tested this beyond any testing you get from 'make check' and 'make check-avocado', which is likely not much. --- include/hw/xen/xen-hvm-common.h | 2 +- hw/arm/xen_arm.c | 4 ++-- hw/i386/xen/xen-hvm.c | 4 ++-- hw/xen/xen-hvm-common.c | 8 ++++---- 4 files changed, 9 insertions(+), 9 deletions(-) diff --git a/include/hw/xen/xen-hvm-common.h b/include/hw/xen/xen-hvm-commo= n.h index f9559e2885b..4e9904f1a65 100644 --- a/include/hw/xen/xen-hvm-common.h +++ b/include/hw/xen/xen-hvm-common.h @@ -93,7 +93,7 @@ void xen_device_unrealize(DeviceListener *listener, Devic= eState *dev); =20 void xen_hvm_change_state_handler(void *opaque, bool running, RunState rst= ate); void xen_register_ioreq(XenIOState *state, unsigned int max_cpus, - MemoryListener xen_memory_listener); + const MemoryListener *xen_memory_listener); =20 void cpu_ioreq_pio(ioreq_t *req); #endif /* HW_XEN_HVM_COMMON_H */ diff --git a/hw/arm/xen_arm.c b/hw/arm/xen_arm.c index 044093fec75..1d3e6d481a2 100644 --- a/hw/arm/xen_arm.c +++ b/hw/arm/xen_arm.c @@ -37,7 +37,7 @@ #define TYPE_XEN_ARM MACHINE_TYPE_NAME("xenpvh") OBJECT_DECLARE_SIMPLE_TYPE(XenArmState, XEN_ARM) =20 -static MemoryListener xen_memory_listener =3D { +static const MemoryListener xen_memory_listener =3D { .region_add =3D xen_region_add, .region_del =3D xen_region_del, .log_start =3D NULL, @@ -108,7 +108,7 @@ static void xen_arm_init(MachineState *machine) =20 xam->state =3D g_new0(XenIOState, 1); =20 - xen_register_ioreq(xam->state, machine->smp.cpus, xen_memory_listener); + xen_register_ioreq(xam->state, machine->smp.cpus, &xen_memory_listener= ); =20 #ifdef CONFIG_TPM if (xam->cfg.tpm_base_addr) { diff --git a/hw/i386/xen/xen-hvm.c b/hw/i386/xen/xen-hvm.c index 3da5a2b23f7..f42621e6742 100644 --- a/hw/i386/xen/xen-hvm.c +++ b/hw/i386/xen/xen-hvm.c @@ -458,7 +458,7 @@ static void xen_log_global_stop(MemoryListener *listene= r) xen_in_migration =3D false; } =20 -static MemoryListener xen_memory_listener =3D { +static const MemoryListener xen_memory_listener =3D { .name =3D "xen-memory", .region_add =3D xen_region_add, .region_del =3D xen_region_del, @@ -582,7 +582,7 @@ void xen_hvm_init_pc(PCMachineState *pcms, MemoryRegion= **ram_memory) =20 state =3D g_new0(XenIOState, 1); =20 - xen_register_ioreq(state, max_cpus, xen_memory_listener); + xen_register_ioreq(state, max_cpus, &xen_memory_listener); =20 QLIST_INIT(&xen_physmap); xen_read_physmap(state); diff --git a/hw/xen/xen-hvm-common.c b/hw/xen/xen-hvm-common.c index 886c3ee944d..565dc39c8f6 100644 --- a/hw/xen/xen-hvm-common.c +++ b/hw/xen/xen-hvm-common.c @@ -765,8 +765,8 @@ void xen_shutdown_fatal_error(const char *fmt, ...) } =20 static void xen_do_ioreq_register(XenIOState *state, - unsigned int max_cpus, - MemoryListener xen_memory_liste= ner) + unsigned int max_cpus, + const MemoryListener *xen_memory_listene= r) { int i, rc; =20 @@ -824,7 +824,7 @@ static void xen_do_ioreq_register(XenIOState *state, =20 qemu_add_vm_change_state_handler(xen_hvm_change_state_handler, state); =20 - state->memory_listener =3D xen_memory_listener; + state->memory_listener =3D *xen_memory_listener; memory_listener_register(&state->memory_listener, &address_space_memor= y); =20 state->io_listener =3D xen_io_listener; @@ -842,7 +842,7 @@ err: } =20 void xen_register_ioreq(XenIOState *state, unsigned int max_cpus, - MemoryListener xen_memory_listener) + const MemoryListener *xen_memory_listener) { int rc; =20 --=20 2.34.1