From mboxrd@z Thu Jan 1 00:00:00 1970 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 10CECC4332F for ; Fri, 4 Nov 2022 06:24:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=UOWf/nIi40ougnQf5QAzEz3YXMZEt/oRNND4nuA9waA=; b=r3r7jWXYFvru8A VoRqQW1s/QXRN2OCyMMnxZ5nJcL2FDRnjzWBf1KKcxdFEcuyZU16VTb9UM94QpvQPadvrBMJ5k7gu a4b5qLTtdHYGJeHDi8B0S14rBjA1b64b1Oc7+/IAxlAz5j7sYr9BnBGOa9h0zJsHk6CWL0YoStpW6 EBt/sDZXkhfew32NdT/G/IUj+SdXantx7dex7l91xiCyZppDDHj+JnGqxYbA6S7kdUZocXR1V6WQn lrO/4NkxWZ1T69KEo8GM1j6qvWvMJv9a+UhRNSTQ9mnejiDDFPdKt/TygxaSg52AcowN+C+MlrLwe KoJ2CsAsSOGUIYfMz/Mw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oqq77-002WXW-RK; Fri, 04 Nov 2022 06:23:38 +0000 Received: from mail-wm1-x331.google.com ([2a00:1450:4864:20::331]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oqq4t-002Vml-FR for linux-arm-kernel@lists.infradead.org; Fri, 04 Nov 2022 06:21:21 +0000 Received: by mail-wm1-x331.google.com with SMTP id r186-20020a1c44c3000000b003cf4d389c41so4760014wma.3 for ; Thu, 03 Nov 2022 23:21:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance-com.20210112.gappssmtp.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=3gm+CCMBzGV2wY5tpR1ywTaFubhsMnT6RUSMviBRIrA=; b=2tmx0ZEzKlapeA40O0da60uijCZiQnnvovriTJgT3C3YW39LcGgvxSgN7m0Ms0JXRr D92XuuUCup3qht8mttWG9ecOOEurQnH46+r4Oaj2PNwPaCuW57yvPYegBdCMNT8MnSoU NOlY3X6PELYB51vtQkE4j/wGUNXLmEKjmPzkuW9/jS+OiQ316dllc8FPxAsGI0rzGUTU 5q2tEAFlf54tRihF1fQBaPZ+jK4//Gke9zNI4MbzwaxlCrgaYBonTRPX25KVZrENs1J3 Xow0dCWTcpfW0PdaLQ/uzBW2WBuW1Aegf7XTWh65W1L5iuGy79EZUOzhsxIypYrmCsE+ u/Lg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=3gm+CCMBzGV2wY5tpR1ywTaFubhsMnT6RUSMviBRIrA=; b=xoC8ipYduR0Ove5XJoG9o0rUnr/oHl7Ygz0+6eOHREdfUS87wT2YdgpQjqupAMR3Ti Uw7BSDsNBFbPhfn34+akP85svRQ0poFfBw+CnseFxZoNV1MIfJ8PC/mr0HkbH1GD6Hyp P91CWn9SeOLn/2EFSBbAhexV+c3uAUDoYUugmvSzFtG6wO7QJGEQmz1N6mUK3sPy2m+h 0iRyzIwvWhWeMvEU1lbTGOn8sNjdl32ibaKYH12tKlBiITNj2O+Q1ihjFBEFclBliziP mM/Akp4G0KmQt03K5Uil7PdCFB3khZVoiF4eyqq/qvBshUvmLWbov/ffxZqYovQtayuw Yf+w== X-Gm-Message-State: ACrzQf2mrBDxcDjBdLnb5EQfwkqcFem5ow+f0aJwXoxacGm7/644egQj yzCXr4nU8RXrbltjY6ii5gVXRA== X-Google-Smtp-Source: AMsMyM7cP7o2Mb3eYYy1AVu03sQGOtx3okUtdbwIqzpIe6O5ZDxr+oIbMBpI7JrFVBYNndSa4ueUzw== X-Received: by 2002:a05:600c:3b87:b0:3cf:59ea:ea26 with SMTP id n7-20020a05600c3b8700b003cf59eaea26mr26647184wms.159.1667542875338; Thu, 03 Nov 2022 23:21:15 -0700 (PDT) Received: from usaari01.cust.communityfibre.co.uk ([2a02:6b6a:b4d7:0:c7c:f931:dd4c:1ea6]) by smtp.gmail.com with ESMTPSA id w11-20020a5d608b000000b002366f9bd717sm3099924wrt.45.2022.11.03.23.21.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 03 Nov 2022 23:21:14 -0700 (PDT) From: Usama Arif To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, linux-doc@vger.kernel.org, virtualization@lists.linux-foundation.org, linux@armlinux.org.uk, yezengruan@huawei.com, catalin.marinas@arm.com, will@kernel.org, maz@kernel.org, steven.price@arm.com, mark.rutland@arm.com, bagasdotme@gmail.com Cc: fam.zheng@bytedance.com, liangma@liangbit.com, punit.agrawal@bytedance.com, Usama Arif Subject: [v2 2/6] KVM: arm64: Add SMCCC paravirtualised lock calls Date: Fri, 4 Nov 2022 06:21:01 +0000 Message-Id: <20221104062105.4119003-3-usama.arif@bytedance.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221104062105.4119003-1-usama.arif@bytedance.com> References: <20221104062105.4119003-1-usama.arif@bytedance.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221103_232119_601219_E677E759 X-CRM114-Status: GOOD ( 15.19 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add a new SMCCC compatible hypercalls for PV lock features: ARM_SMCCC_KVM_FUNC_PV_LOCK: 0xC6000002 Also add the header file which defines the ABI for the paravirtualized lock features we're about to add. Signed-off-by: Zengruan Ye Signed-off-by: Usama Arif --- arch/arm64/include/asm/pvlock-abi.h | 17 +++++++++++++++++ include/linux/arm-smccc.h | 8 ++++++++ tools/include/linux/arm-smccc.h | 8 ++++++++ 3 files changed, 33 insertions(+) create mode 100644 arch/arm64/include/asm/pvlock-abi.h diff --git a/arch/arm64/include/asm/pvlock-abi.h b/arch/arm64/include/asm/pvlock-abi.h new file mode 100644 index 000000000000..3f4574071679 --- /dev/null +++ b/arch/arm64/include/asm/pvlock-abi.h @@ -0,0 +1,17 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright(c) 2019 Huawei Technologies Co., Ltd + * Author: Zengruan Ye + * Usama Arif + */ + +#ifndef __ASM_PVLOCK_ABI_H +#define __ASM_PVLOCK_ABI_H + +struct pvlock_vcpu_state { + __le64 preempted; + /* Structure must be 64 byte aligned, pad to that size */ + u8 padding[56]; +} __packed; + +#endif diff --git a/include/linux/arm-smccc.h b/include/linux/arm-smccc.h index 220c8c60e021..104c10035b10 100644 --- a/include/linux/arm-smccc.h +++ b/include/linux/arm-smccc.h @@ -112,6 +112,7 @@ /* KVM "vendor specific" services */ #define ARM_SMCCC_KVM_FUNC_FEATURES 0 #define ARM_SMCCC_KVM_FUNC_PTP 1 +#define ARM_SMCCC_KVM_FUNC_PV_LOCK 2 #define ARM_SMCCC_KVM_FUNC_FEATURES_2 127 #define ARM_SMCCC_KVM_NUM_FUNCS 128 @@ -151,6 +152,13 @@ ARM_SMCCC_OWNER_STANDARD_HYP, \ 0x21) +/* Paravirtualised lock calls */ +#define ARM_SMCCC_VENDOR_HYP_KVM_PV_LOCK_FUNC_ID \ + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ + ARM_SMCCC_SMC_64, \ + ARM_SMCCC_OWNER_VENDOR_HYP, \ + ARM_SMCCC_KVM_FUNC_PV_LOCK) + /* TRNG entropy source calls (defined by ARM DEN0098) */ #define ARM_SMCCC_TRNG_VERSION \ ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ diff --git a/tools/include/linux/arm-smccc.h b/tools/include/linux/arm-smccc.h index 63ce9bebccd3..c21e539c0228 100644 --- a/tools/include/linux/arm-smccc.h +++ b/tools/include/linux/arm-smccc.h @@ -111,6 +111,7 @@ /* KVM "vendor specific" services */ #define ARM_SMCCC_KVM_FUNC_FEATURES 0 #define ARM_SMCCC_KVM_FUNC_PTP 1 +#define ARM_SMCCC_KVM_FUNC_PV_LOCK 2 #define ARM_SMCCC_KVM_FUNC_FEATURES_2 127 #define ARM_SMCCC_KVM_NUM_FUNCS 128 @@ -150,6 +151,13 @@ ARM_SMCCC_OWNER_STANDARD_HYP, \ 0x21) +/* Paravirtualised lock calls */ +#define ARM_SMCCC_VENDOR_HYP_KVM_PV_LOCK_FUNC_ID \ + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ + ARM_SMCCC_SMC_64, \ + ARM_SMCCC_OWNER_VENDOR_HYP, \ + ARM_SMCCC_KVM_FUNC_PV_LOCK) + /* TRNG entropy source calls (defined by ARM DEN0098) */ #define ARM_SMCCC_TRNG_VERSION \ ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ -- 2.25.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel