From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 691FB1FECC6 for ; Fri, 6 Dec 2024 11:24:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733484270; cv=none; b=WZZFCPDOGSdRPX7W3b54/YEevvoE6H0edogBDhvlEUvVBPuW6+RucRUG4NOOKCfLp+Gs/2UE6XTginGWf+hRq2rf1XBjZseQ+kDwz3GhuIqiCApAGyWSCSA7qFrg3TU5MpnEtfF3TRb9RiFvNaK97CB+rs6+w8+SoCdarjtY0ss= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733484270; c=relaxed/simple; bh=NVkS6PRUfzPKuj6iOwUEDt454cE88rnYqkwfXtdyNUY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-type; b=aLOQQJ+hSV114eROvGOAE2LvI/eZa6ZwIs25l4+wa0Ow4b0VEcnBIOAieT0OME3SUxgScLMCChGU0gKv/wpohX6SGpwszCdm3sDff9eCQEBVZCPN5IKteCHtS9m9ZbaHMTDLajSn9Ts+FStrcUSOUnRZWyHTAeowezSkLTvRvFI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=RrQBHF/D; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="RrQBHF/D" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1733484266; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=CwDEa/NM4JWEHnIyr/wEI1Tuog1STukmc+A4+IQhB28=; b=RrQBHF/DBCdXht0UJfdcAIWUFHh/chDfgLwR4MCYUggibc8ddGepgGPOcQy/q4ssyjYtY0 W5WHlZqL5G9MAFEuLlB8IGuC7Yryt8BuQhY2/xIBtV+UtU5J/L9fJGmP/zWy+vaNe3McBZ gZ8Eb39h4eQ9IJGmpvvKyHwK/KOz+lc= Received: from mx-prod-mc-02.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-623-tGUj8UmNOsyMloaSm7kzhQ-1; Fri, 06 Dec 2024 06:24:23 -0500 X-MC-Unique: tGUj8UmNOsyMloaSm7kzhQ-1 X-Mimecast-MFC-AGG-ID: tGUj8UmNOsyMloaSm7kzhQ Received: from mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.12]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 3C2FA19560A7; Fri, 6 Dec 2024 11:24:21 +0000 (UTC) Received: from gondolin.str.redhat.com (dhcp-192-244.str.redhat.com [10.33.192.244]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id F361319560A2; Fri, 6 Dec 2024 11:24:15 +0000 (UTC) From: Cornelia Huck To: eric.auger.pro@gmail.com, eric.auger@redhat.com, qemu-devel@nongnu.org, qemu-arm@nongnu.org, kvmarm@lists.linux.dev, peter.maydell@linaro.org, richard.henderson@linaro.org, alex.bennee@linaro.org, maz@kernel.org, oliver.upton@linux.dev, sebott@redhat.com, shameerali.kolothum.thodi@huawei.com, armbru@redhat.com, berrange@redhat.com, abologna@redhat.com, jdenemar@redhat.com Cc: shahuang@redhat.com, mark.rutland@arm.com, philmd@linaro.org, pbonzini@redhat.com, Cornelia Huck Subject: [PATCH RFCv2 19/20] arm-qmp-cmds: introspection for ID register props Date: Fri, 6 Dec 2024 12:22:12 +0100 Message-ID: <20241206112213.88394-20-cohuck@redhat.com> In-Reply-To: <20241206112213.88394-1-cohuck@redhat.com> References: <20241206112213.88394-1-cohuck@redhat.com> Precedence: bulk X-Mailing-List: kvmarm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-type: text/plain Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 Implement the capability to query available ID register values by adding SYSREG_* options and values to the cpu model expansion for the host model, if available. Excerpt: (QEMU) query-cpu-model-expansion type=full model={"name":"host"} {"return": {"model": {"name": "host", "props": {"SYSREG_ID_AA64PFR0_EL1_EL3": 1224979098931106066, "SYSREG_ID_AA64ISAR2_EL1_CLRBHB": 0, ../.. So this allows the upper stack to detect available writable ID regs and the "host passthrough model" values. [CH: moved SYSREG_* values to host model] Signed-off-by: Eric Auger Signed-off-by: Cornelia Huck --- TODO: Add the moment there is no way to test changing a given ID reg field value. ie: (QEMU) query-cpu-model-expansion type=full model={"name":"host", "prop":{"SYSREG_ID_AA64ISAR0_EL1_DP":0x13}} --- target/arm/arm-qmp-cmds.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/target/arm/arm-qmp-cmds.c b/target/arm/arm-qmp-cmds.c index 3cc8cc738bb0..44d7bf4c80ce 100644 --- a/target/arm/arm-qmp-cmds.c +++ b/target/arm/arm-qmp-cmds.c @@ -21,6 +21,7 @@ */ #include "qemu/osdep.h" +#include "qemu/error-report.h" #include "hw/boards.h" #include "kvm_arm.h" #include "qapi/error.h" @@ -209,6 +210,24 @@ CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type, } } + /* If writable ID regs are supported, add them as well */ + if (ARM_CPU(obj)->writable_id_regs == WRITABLE_ID_REGS_AVAIL) { + ObjectProperty *prop; + ObjectPropertyIterator iter; + + object_property_iter_init(&iter, obj); + + while ((prop = object_property_iter_next(&iter))) { + QObject *value; + + if (!g_str_has_prefix(prop->name, "SYSREG_")) { + continue; + } + value = object_property_get_qobject(obj, prop->name, &error_abort); + qdict_put_obj(qdict_out, prop->name, value); + } + } + if (!qdict_size(qdict_out)) { qobject_unref(qdict_out); } else { -- 2.47.0