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[14.202.190.183]) by smtp.gmail.com with ESMTPSA id k67sm994803pga.91.2020.03.16.22.03.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 16 Mar 2020 22:03:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=amo7tEPKLKAI4LAECmJK7fRz7zN6KrBvaL5VCtrB9GE=; b=opoZ+f1PJBBHSae1VU28wafJiBg312u0Y32s6moJ7ne8JRs3Imom3SpQMpe+LlFajp aOFMyTvrDQNvXgSNVo7zODg2qWU2AVY8W38eocq26WikWvoG11PxjseSWTsWEHuVX471 lrQKXNFmiUd+SmGkEOd9AztW2z/RxB+ehvk4ulhCgmi1ZqAWHMIxMbGnDAM19yGKiUXV TuWuavT2zwmDvd+C7gBeWBYH8iqgp/TD0zDpntDzVClOTiO1qhOHtwH/Hn0zqJuVAnBx zWRu3xkmgWgfMqMv/bt8+awSRV4nG6Tdg0gd8ODO26L9HigthdE9QumUaMLi1Fs9vNv1 8Cug== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=amo7tEPKLKAI4LAECmJK7fRz7zN6KrBvaL5VCtrB9GE=; b=H36kD9csnktEQf4x+yO0Bk7vr+3+BvAjtAYQryGsyEFI3i8Ra5yHbz8ePhJ0B4KlPk guiN0+MjMVbxEGyF2mHla04Ll9KxDv857HhKyKzLELVWqEkvgPTuuG1MFnUSH+frIajE AJDlRoYlTpz7nQcou1dvRa4LUPVkh4Fa6Ctrfp8+eT9OQ27uYmM68mkgl6KkHbZONW8Q jwAP8Vr8eDIpKJpxVb89Wq9eYGO6+goIfqnKa0kPNbkDkJLTjhJ1HIuDKCR1tDaCF7kk V5hMFRUWy5jGBbgwWSs8wXTzzJpwJVyugldKmlbTljiBxLW+Gzm6U/WwjC7aLN7uV5S6 hkIw== X-Gm-Message-State: ANhLgQ2uO0jJe0MK+XpISvnpSjiwsQfDyA9XRuWqLHzLWUKs1pR026gH lYmmBfFoPv3yRYTUO62fg4CZbtmWcrE= X-Google-Smtp-Source: ADFU+vtpZOSjgzNkEQr8+pR7DKgFMi5P/OoljaJw2SYbUvPB64vcjvtfXWmy5n4bnwKk3XeXwHp/hQ== X-Received: by 2002:a17:902:b58b:: with SMTP id a11mr2716505pls.9.1584421403442; Mon, 16 Mar 2020 22:03:23 -0700 (PDT) From: Nicholas Piggin To: qemu-ppc@nongnu.org Subject: [PATCH 3/5] ppc/spapr: Add FWNMI machine check delivery warnings Date: Tue, 17 Mar 2020 15:02:13 +1000 Message-Id: <20200317050215.159334-4-npiggin@gmail.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20200317050215.159334-1-npiggin@gmail.com> References: <20200317050215.159334-1-npiggin@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::1043 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Aravinda Prasad , Alexey Kardashevskiy , qemu-devel@nongnu.org, Nicholas Piggin , Greg Kurz , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , Ganesh Goudar , David Gibson Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" Add some messages which explain problems and guest misbehaviour that may be difficult to diagnose in rare cases of machine checks. Signed-off-by: Nicholas Piggin --- hw/ppc/spapr_events.c | 4 ++++ hw/ppc/spapr_rtas.c | 4 ++++ 2 files changed, 8 insertions(+) diff --git a/hw/ppc/spapr_events.c b/hw/ppc/spapr_events.c index 05337f0671..d35151eeb0 100644 --- a/hw/ppc/spapr_events.c +++ b/hw/ppc/spapr_events.c @@ -807,6 +807,8 @@ static void spapr_mce_dispatch_elog(PowerPCCPU *cpu, bo= ol recovered) /* get rtas addr from fdt */ rtas_addr =3D spapr_get_rtas_addr(); if (!rtas_addr) { + warn_report("FWNMI: Unable to deliver machine check to guest: " + "rtas_addr not found."); qemu_system_guest_panicked(NULL); g_free(ext_elog); return; @@ -848,6 +850,8 @@ void spapr_mce_req_event(PowerPCCPU *cpu, bool recovere= d) * that CPU called "ibm,nmi-interlock") */ if (spapr->fwnmi_machine_check_interlock =3D=3D cpu->vcpu_id) { + warn_report("FWNMI: Unable to deliver machine check to guest: " + "nested machine check."); qemu_system_guest_panicked(NULL); return; } diff --git a/hw/ppc/spapr_rtas.c b/hw/ppc/spapr_rtas.c index 29abe66d01..12cd09701c 100644 --- a/hw/ppc/spapr_rtas.c +++ b/hw/ppc/spapr_rtas.c @@ -462,6 +462,10 @@ static void rtas_ibm_nmi_interlock(PowerPCCPU *cpu, } =20 if (spapr->fwnmi_machine_check_addr =3D=3D -1) { + qemu_log_mask(LOG_GUEST_ERROR, + "FWNMI: ibm,nmi-interlock RTAS called with FWNMI not= " + "registered.\n"); + /* NMI register not called */ rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); return; --=20 2.23.0