From nobody Tue Feb 10 19:47:53 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 151599829682222.78205006306689; Sun, 14 Jan 2018 22:38:16 -0800 (PST) Received: from localhost ([::1]:41153 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eayPM-000368-0c for importer@patchew.org; Mon, 15 Jan 2018 01:38:12 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57460) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eayKd-0007xn-N7 for qemu-devel@nongnu.org; Mon, 15 Jan 2018 01:33:20 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eayKa-0006yC-Km for qemu-devel@nongnu.org; Mon, 15 Jan 2018 01:33:19 -0500 Received: from mail-pf0-x241.google.com ([2607:f8b0:400e:c00::241]:43215) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1eayKY-0006v7-Bw; Mon, 15 Jan 2018 01:33:14 -0500 Received: by mail-pf0-x241.google.com with SMTP id y26so24528pfi.10; Sun, 14 Jan 2018 22:33:14 -0800 (PST) Received: from surajjs1.ozlabs.ibm.com ([122.99.82.10]) by smtp.gmail.com with ESMTPSA id 13sm62362864pfs.112.2018.01.14.22.33.10 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 14 Jan 2018 22:33:12 -0800 (PST) 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; bh=DkAYN0O+PPYb3iuig7/J9eeqPTU7VTFQTWb71D7+GI4=; b=WQhfCVGBsO/ic57so6i1po/K9vJycLfTyRJmxC9ghSBxLqLNBt6zAbHbNe1DTtJnHD T3cW5BTucmOPQ8gNAPmU9e+XIANwUt66yf5z43UnUed02qlLsVvNPTN39BNU0bq0oKlf uIjrQP+crCR9lB5brKKLLMwNsZV1ynWK5AxBOCHvu/zY1beqynaEm8GUcEolzxUIMbu+ oAvmgVLMESMMo2CFIES0f0jOjLONYmwNxUeKg87eu0EQytdovY4blsvUNj7SnXOZix8K 129jEPSssyvL/Wia+u0rXLxm7VTgO0WeO2cEgwoh07CMIkocybDFtVF1wkMVT327FGUM Bptw== 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; bh=DkAYN0O+PPYb3iuig7/J9eeqPTU7VTFQTWb71D7+GI4=; b=tCeG769WCWJkhYmQD+EZo+5kw7c5lYbtImECNjLcxLtt/TcYzRBIB9z86ZzuDidj3Z WdiXbVXfcWqPnF5jecQS5W11CtqTc849tql5Ef2FVQvoNdraZ8Kt9V8L3IhxNYzDNFTd Kd1kSP2vTyYFFijN0+qlmizcDigWXPF53mnhSV35t3mZtjdp4bOrcUglzCMvufj6WvNG zaAYzVxEtVDd6RbHHXcwoXVokOvG2bZFZ2DiwwChgcJSYrtOmv4JvhkNhZU3MyO+ous3 7mLE4ENQnR2hWCUFv9vy2mJYgJV50fjsMZE7zLcB7vNSXT0zE0MkiN6SZSOVEDQwbX2G bH/Q== X-Gm-Message-State: AKGB3mLpNdqXaBccNKK7vp5Dyz5H/ItGKhIp8vzVutEwcZ0CAbQWc4yd VenxVQZJh06OV8wksXds/dai12Ic X-Google-Smtp-Source: ACJfBovdC8OVqIBKAN+lJKGkejQ8H8SKql8cT4oLNzLUYNwP+KOxGTnwORq4c3rWRcAZtLyg/GyK8g== X-Received: by 10.98.214.129 with SMTP id a1mr24822103pfl.221.1515997993278; Sun, 14 Jan 2018 22:33:13 -0800 (PST) From: Suraj Jitindar Singh To: qemu-ppc@nongnu.org Date: Mon, 15 Jan 2018 17:32:35 +1100 Message-Id: <20180115063235.7518-7-sjitindarsingh@gmail.com> X-Mailer: git-send-email 2.13.6 In-Reply-To: <20180115063235.7518-1-sjitindarsingh@gmail.com> References: <20180115063235.7518-1-sjitindarsingh@gmail.com> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:400e:c00::241 Subject: [Qemu-devel] [QEMU-PPC] [PATCH V3 6/6] target/ppc/spapr: Add H-Call H_GET_CPU_CHARACTERISTICS X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: paulus@ozlabs.org, qemu-devel@nongnu.org, sjitindarsingh@gmail.com, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZohoMail: RDKM_2 RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" The new H-Call H_GET_CPU_CHARACTERISTICS is used by the guest to query behaviours and available characteristics of the cpu. Implement the handler for this new H-Call which formulates its response based on the setting of the spapr_caps cap-cfpc, cap-sbbc and cap-ibs. Signed-off-by: Suraj Jitindar Singh --- hw/ppc/spapr_hcall.c | 66 ++++++++++++++++++++++++++++++++++++++++++++++= ++++ include/hw/ppc/spapr.h | 1 + 2 files changed, 67 insertions(+) diff --git a/hw/ppc/spapr_hcall.c b/hw/ppc/spapr_hcall.c index 51eba52e86..a693d3b852 100644 --- a/hw/ppc/spapr_hcall.c +++ b/hw/ppc/spapr_hcall.c @@ -1654,6 +1654,69 @@ static target_ulong h_client_architecture_support(Po= werPCCPU *cpu, return H_SUCCESS; } =20 +static target_ulong h_get_cpu_characteristics(PowerPCCPU *cpu, + sPAPRMachineState *spapr, + target_ulong opcode, + target_ulong *args) +{ + uint64_t characteristics =3D H_CPU_CHAR_HON_BRANCH_HINTS & + ~H_CPU_CHAR_THR_RECONF_TRIG; + uint64_t behaviour =3D H_CPU_BEHAV_FAVOUR_SECURITY; + uint8_t safe_cache =3D spapr_get_cap(spapr, SPAPR_CAP_CFPC); + uint8_t safe_bounds_check =3D spapr_get_cap(spapr, SPAPR_CAP_SBBC); + uint8_t safe_indirect_branch =3D spapr_get_cap(spapr, SPAPR_CAP_IBS); + + switch (safe_cache) { + case SPAPR_CAP_WORKAROUND: + characteristics |=3D H_CPU_CHAR_L1D_FLUSH_ORI30; + characteristics |=3D H_CPU_CHAR_L1D_FLUSH_TRIG2; + characteristics |=3D H_CPU_CHAR_L1D_THREAD_PRIV; + behaviour |=3D H_CPU_BEHAV_L1D_FLUSH_PR; + break; + case SPAPR_CAP_FIXED: + break; + default: /* broken */ + if (safe_cache !=3D SPAPR_CAP_BROKEN) { + error_report("Invalid value for cap-cfpc (%d), assuming broken= ", + safe_cache); + } + behaviour |=3D H_CPU_BEHAV_L1D_FLUSH_PR; + break; + } + + switch (safe_bounds_check) { + case SPAPR_CAP_WORKAROUND: + characteristics |=3D H_CPU_CHAR_SPEC_BAR_ORI31; + behaviour |=3D H_CPU_BEHAV_BNDS_CHK_SPEC_BAR; + break; + case SPAPR_CAP_FIXED: + break; + default: /* broken */ + if (safe_bounds_check !=3D SPAPR_CAP_BROKEN) { + error_report("Invalid value for cap-sbbc (%d), assuming broken= ", + safe_bounds_check); + } + behaviour |=3D H_CPU_BEHAV_BNDS_CHK_SPEC_BAR; + break; + } + + switch (safe_indirect_branch) { + case SPAPR_CAP_FIXED: + characteristics |=3D H_CPU_CHAR_BCCTRL_SERIALISED; + default: /* broken */ + if (safe_indirect_branch !=3D SPAPR_CAP_BROKEN) { + error_report("Invalid value for cap-ibs (%d), assuming broken", + safe_indirect_branch); + } + break; + } + + args[0] =3D characteristics; + args[1] =3D behaviour; + + return H_SUCCESS; +} + static spapr_hcall_fn papr_hypercall_table[(MAX_HCALL_OPCODE / 4) + 1]; static spapr_hcall_fn kvmppc_hypercall_table[KVMPPC_HCALL_MAX - KVMPPC_HCA= LL_BASE + 1]; =20 @@ -1733,6 +1796,9 @@ static void hypercall_register_types(void) spapr_register_hypercall(H_INVALIDATE_PID, h_invalidate_pid); spapr_register_hypercall(H_REGISTER_PROC_TBL, h_register_process_table= ); =20 + /* hcall-get-cpu-characteristics */ + spapr_register_hypercall(H_GET_CPU_CHARACTERISTICS, h_get_cpu_characte= ristics); + /* "debugger" hcalls (also used by SLOF). Note: We do -not- differenci= ate * here between the "CI" and the "CACHE" variants, they will use whate= ver * mapping attributes qemu is using. When using KVM, the kernel will diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h index 549d7a4134..62c077ac20 100644 --- a/include/hw/ppc/spapr.h +++ b/include/hw/ppc/spapr.h @@ -404,6 +404,7 @@ struct sPAPRMachineState { #define H_GET_HCA_INFO 0x1B8 #define H_GET_PERF_COUNT 0x1BC #define H_MANAGE_TRACE 0x1C0 +#define H_GET_CPU_CHARACTERISTICS 0x1C8 #define H_FREE_LOGICAL_LAN_BUFFER 0x1D4 #define H_QUERY_INT_STATE 0x1E4 #define H_POLL_PENDING 0x1D8 --=20 2.13.6