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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3C71AC433F5 for ; Wed, 17 Nov 2021 06:46:41 +0000 (UTC) Received: from mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by mail.kernel.org (Postfix) with ESMTP id AFA7B6321B for ; Wed, 17 Nov 2021 06:46:40 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org AFA7B6321B Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.cs.columbia.edu Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 260114086F; Wed, 17 Nov 2021 01:46:40 -0500 (EST) X-Virus-Scanned: at lists.cs.columbia.edu Authentication-Results: mm01.cs.columbia.edu (amavisd-new); dkim=softfail (fail, message has been altered) header.i=@google.com Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 5TB2Xs8h-aka; Wed, 17 Nov 2021 01:46:38 -0500 (EST) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 7D1874B0FC; Wed, 17 Nov 2021 01:46:38 -0500 (EST) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 2C9174B0EF for ; Wed, 17 Nov 2021 01:46:37 -0500 (EST) X-Virus-Scanned: at lists.cs.columbia.edu Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id dLKTnVRXLvuw for ; Wed, 17 Nov 2021 01:46:36 -0500 (EST) Received: from mail-pf1-f202.google.com (mail-pf1-f202.google.com [209.85.210.202]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id E03CB4086F for ; Wed, 17 Nov 2021 01:46:35 -0500 (EST) Received: by mail-pf1-f202.google.com with SMTP id m16-20020a628c10000000b004a282d715b2so1110979pfd.11 for ; Tue, 16 Nov 2021 22:46:35 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=N8fXLZvqvLp46Vlb4MzkHW+PGd4Y1uV4+vNk1MNsoX0=; b=elNT4EfICJasbMSr/sYT0V1/WkFPMoqyqLRbGmG7zbzGDFT6A4OQRNMQGgcXR0LaSX oLEu/mbv1y3wwz3gKGrHjlgyRVltbe5BnSEaGEUFHNujVkdVYM7yEnqle/1ENDCe59t4 yfQK7K/JOWgUWTTmlLUj+CgQjQgrgQnltIJ9mc065L65W9UDIAtVBzxY/T9FxKVtGU4Z pPabu4FCY5kW58/Np0jr4Pmd1Hg6LcbQkgOzQJShJfb9aqtddBl85imtFziYKFyKIRWj ArwDotwmWfET5LLJ55ke68oyxkVYzKI0hR/rDvAIfOw37WfDwQ5rBxhavWPRQtst24dk XTrw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=N8fXLZvqvLp46Vlb4MzkHW+PGd4Y1uV4+vNk1MNsoX0=; b=ckC7xiA8le24RMZ8CksMitnEgSZedtPRihvenVBME/rOFA819gFVe9Oc38JSNw7x8Q pq4x9ftmsk4xHf0RWgida+MjWOkmHDvG77zy8E3zvXz42xdI680IHHrQnFXdoYhNZP5b jMQ2Huy+QjRl3dW8392UvFxv0osHARXFEOSPQNvPOuuigg78qb2pcTQp2XAsSAxPu47v a8lZt0fJQ1IoRJ0N5ImqG9mxh7GjbzvHsC/mB7ZWNBUWSeuFlr3NKPu9+vPKktqWsHBK 69dmO+OKbkXRDoXdq8VCpsEfjfs0+z2pF7b5T2QkWvTmFju/vV5hDgxWF710yL0xJ5S/ y5qg== X-Gm-Message-State: AOAM531vtlFcd8b1KUbCdTAcelUYFKWUcn9Tf9nwU5Vult3oZ2yHWwL5 tnzVtRmhi/UxWd68O4BLVt+9ps/6SpI= X-Google-Smtp-Source: ABdhPJwNBUSOEB1JuFJIrJfbR51JUxxZJ1OON4wodu+1NC7Urx/fRiLZJ4etkL1sB/ACUMvvsEJ5yqyqc0k= X-Received: from reiji-vws-sp.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:3d59]) (user=reijiw job=sendgmr) by 2002:a62:15d0:0:b0:4a0:2dd5:ee4e with SMTP id 199-20020a6215d0000000b004a02dd5ee4emr46726718pfv.14.1637131594948; Tue, 16 Nov 2021 22:46:34 -0800 (PST) Date: Tue, 16 Nov 2021 22:43:31 -0800 In-Reply-To: <20211117064359.2362060-1-reijiw@google.com> Message-Id: <20211117064359.2362060-2-reijiw@google.com> Mime-Version: 1.0 References: <20211117064359.2362060-1-reijiw@google.com> X-Mailer: git-send-email 2.34.0.rc1.387.gb447b232ab-goog Subject: [RFC PATCH v3 01/29] KVM: arm64: Add has_reset_once flag for vcpu From: Reiji Watanabe To: Marc Zyngier , kvmarm@lists.cs.columbia.edu Cc: kvm@vger.kernel.org, Will Deacon , Peter Shier , Paolo Bonzini , linux-arm-kernel@lists.infradead.org X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list List-Id: Where KVM/ARM decisions are made List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu Introduce 'has_reset_once' flag in kvm_vcpu_arch, which indicates if the vCPU reset has been done once, for later use. Signed-off-by: Reiji Watanabe Reviewed-by: Oliver Upton --- arch/arm64/include/asm/kvm_host.h | 2 ++ arch/arm64/kvm/reset.c | 4 ++++ 2 files changed, 6 insertions(+) diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index 2a5f7f38006f..edbe2cb21947 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -385,6 +385,7 @@ struct kvm_vcpu_arch { u64 last_steal; gpa_t base; } steal; + bool has_reset_once; }; /* Pointer to the vcpu's SVE FFR for sve_{save,load}_state() */ @@ -450,6 +451,7 @@ struct kvm_vcpu_arch { #define vcpu_has_sve(vcpu) (system_supports_sve() && \ ((vcpu)->arch.flags & KVM_ARM64_GUEST_HAS_SVE)) +#define vcpu_has_reset_once(vcpu) ((vcpu)->arch.has_reset_once) #ifdef CONFIG_ARM64_PTR_AUTH #define vcpu_has_ptrauth(vcpu) \ diff --git a/arch/arm64/kvm/reset.c b/arch/arm64/kvm/reset.c index 426bd7fbc3fd..c3a91ab370fa 100644 --- a/arch/arm64/kvm/reset.c +++ b/arch/arm64/kvm/reset.c @@ -305,6 +305,10 @@ int kvm_reset_vcpu(struct kvm_vcpu *vcpu) if (loaded) kvm_arch_vcpu_load(vcpu, smp_processor_id()); preempt_enable(); + + if (!ret && !vcpu->arch.has_reset_once) + vcpu->arch.has_reset_once = true; + return ret; } -- 2.34.0.rc1.387.gb447b232ab-goog _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm