From patchwork Thu Sep 14 01:37:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Xu, Haibo1" X-Patchwork-Id: 13383957 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 695BBEE0213 for ; Thu, 14 Sep 2023 01:29:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233866AbjINB3r (ORCPT ); Wed, 13 Sep 2023 21:29:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47128 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233828AbjINB3o (ORCPT ); Wed, 13 Sep 2023 21:29:44 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.120]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 802F81BD7; Wed, 13 Sep 2023 18:29:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1694654980; x=1726190980; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=b/0N3bmHKPwLoIm1d3ucuRyECJSoSIj1ZqZKhOBkTUo=; b=WaX8l2PVp/PejBtCiBLjbUvG9hkW4AAz/DwTq5gzzX3Wo5CPxfNC5/9S FOsUn7FwH1F3JFQxTjsnDrqOMrsRfKYljIN459m3oZ+Y+vJO04Mzj3j1Q PsI2PGtdpskDHiz78/AuWRmQW227AK7/TAp2NRhwrX9dnctvCStBHLyw1 oI8FTmFCASiWLZRCqT7aHyzkxUOJmbvhdqqNLA8tdBM8T3JGHmXanhvA+ ATAtYJ9AlvSx1VlBYcWFGkHU2X114Afka1eonQosn7V3VRXCcNgk2BjSy N8GpJsbgDERdEF7F40cq0ADTiCwVcR5jhS0MEBNwGxECTtTSyHdwYFAr8 Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10832"; a="377734242" X-IronPort-AV: E=Sophos;i="6.02,144,1688454000"; d="scan'208";a="377734242" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Sep 2023 18:29:39 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10832"; a="694049515" X-IronPort-AV: E=Sophos;i="6.02,144,1688454000"; d="scan'208";a="694049515" Received: from haibo-optiplex-7090.sh.intel.com ([10.239.159.132]) by orsmga003-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Sep 2023 18:29:33 -0700 From: Haibo Xu Cc: xiaobo55x@gmail.com, haibo1.xu@intel.com, ajones@ventanamicro.com, Paul Walmsley , Palmer Dabbelt , Albert Ou , Paolo Bonzini , Shuah Khan , Marc Zyngier , Oliver Upton , James Morse , Suzuki K Poulose , Zenghui Yu , Anup Patel , Atish Patra , Sean Christopherson , Ricardo Koller , Vishal Annapurve , Vitaly Kuznetsov , Vipin Sharma , David Matlack , Colton Lewis , Aaron Lewis , Thomas Huth , linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, kvm@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, kvm-riscv@lists.infradead.org Subject: [PATCH v3 7/9] KVM: riscv: selftests: Add guest helper to get vcpu id Date: Thu, 14 Sep 2023 09:37:01 +0800 Message-Id: <17c19d6ec28bcde8f3a2d169501a700635c0c332.1694421911.git.haibo1.xu@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: References: MIME-Version: 1.0 To: unlisted-recipients:; (no To-header on input) Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Add guest_get_vcpuid() helper to simplify accessing to per-cpu private data. The sscratch CSR was used to store the vcpu id. Signed-off-by: Haibo Xu Reviewed-by: Andrew Jones --- tools/testing/selftests/kvm/include/aarch64/processor.h | 4 ---- tools/testing/selftests/kvm/include/kvm_util_base.h | 2 ++ tools/testing/selftests/kvm/lib/riscv/processor.c | 8 ++++++++ 3 files changed, 10 insertions(+), 4 deletions(-) diff --git a/tools/testing/selftests/kvm/include/aarch64/processor.h b/tools/testing/selftests/kvm/include/aarch64/processor.h index 69e7b08d3f99..f41fcd63624f 100644 --- a/tools/testing/selftests/kvm/include/aarch64/processor.h +++ b/tools/testing/selftests/kvm/include/aarch64/processor.h @@ -219,8 +219,4 @@ void smccc_smc(uint32_t function_id, uint64_t arg0, uint64_t arg1, uint64_t arg2, uint64_t arg3, uint64_t arg4, uint64_t arg5, uint64_t arg6, struct arm_smccc_res *res); - - -uint32_t guest_get_vcpuid(void); - #endif /* SELFTEST_KVM_PROCESSOR_H */ diff --git a/tools/testing/selftests/kvm/include/kvm_util_base.h b/tools/testing/selftests/kvm/include/kvm_util_base.h index 135ae2eb5249..666438113d22 100644 --- a/tools/testing/selftests/kvm/include/kvm_util_base.h +++ b/tools/testing/selftests/kvm/include/kvm_util_base.h @@ -939,4 +939,6 @@ struct ex_regs; typedef void(*exception_handler_fn)(struct ex_regs *); void vm_install_exception_handler(struct kvm_vm *vm, int vector, exception_handler_fn handler); +uint32_t guest_get_vcpuid(void); + #endif /* SELFTEST_KVM_UTIL_BASE_H */ diff --git a/tools/testing/selftests/kvm/lib/riscv/processor.c b/tools/testing/selftests/kvm/lib/riscv/processor.c index efd9ac4b0198..39a1e9902dec 100644 --- a/tools/testing/selftests/kvm/lib/riscv/processor.c +++ b/tools/testing/selftests/kvm/lib/riscv/processor.c @@ -316,6 +316,9 @@ struct kvm_vcpu *vm_arch_vcpu_add(struct kvm_vm *vm, uint32_t vcpu_id, vcpu_set_reg(vcpu, RISCV_CORE_REG(regs.sp), stack_vaddr + stack_size); vcpu_set_reg(vcpu, RISCV_CORE_REG(regs.pc), (unsigned long)guest_code); + /* Setup sscratch for guest_get_vcpuid() */ + vcpu_set_reg(vcpu, RISCV_CSR_REG(sscratch), vcpu_id); + /* Setup default exception vector of guest */ vcpu_set_reg(vcpu, RISCV_CSR_REG(stvec), (unsigned long)guest_unexp_trap); @@ -436,3 +439,8 @@ void vm_install_interrupt_handler(struct kvm_vm *vm, exception_handler_fn handle handlers->exception_handlers[1][0] = handler; } + +uint32_t guest_get_vcpuid(void) +{ + return csr_read(CSR_SSCRATCH); +}