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 X-Spam-Level: X-Spam-Status: No, score=-9.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AA6BEC433E4 for ; Sat, 11 Jul 2020 10:04:49 +0000 (UTC) Received: from mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by mail.kernel.org (Postfix) with ESMTP id 2A7702077D for ; Sat, 11 Jul 2020 10:04:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="jDc2COYM" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2A7702077D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvmarm-bounces@lists.cs.columbia.edu Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 699BE4B12D; Sat, 11 Jul 2020 06:04:48 -0400 (EDT) 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=@redhat.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 C4440RFylbeq; Sat, 11 Jul 2020 06:04:47 -0400 (EDT) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 805FA4B127; Sat, 11 Jul 2020 06:04:47 -0400 (EDT) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id E59054B129 for ; Sat, 11 Jul 2020 06:04:45 -0400 (EDT) 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 4nmCtHzB7Qb6 for ; Sat, 11 Jul 2020 06:04:45 -0400 (EDT) Received: from us-smtp-1.mimecast.com (us-smtp-delivery-1.mimecast.com [207.211.31.120]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 240264B09B for ; Sat, 11 Jul 2020 06:04:45 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1594461884; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=W+UmIX9bjp1SsTNPgtJx0GFQxPx7B6KTaPKfrg10fpU=; b=jDc2COYMRS+PqXB5tQFln31AOne/CgSW1KBxDFzbbDvmtbAv8FiENo2lKO1g1nlgZGb5Fy ci8eXt2wHuGhdbgjZ0KspDooArHCSDjFzB5Wt76MV5hXnkQ46j9XZilXcXE70Y/Y4bopw9 m1ngueaXejzOtj1NVEAtjNO4miMaCKc= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-287-LzASmirmOQ2Eg7629F0cTw-1; Sat, 11 Jul 2020 06:04:40 -0400 X-MC-Unique: LzASmirmOQ2Eg7629F0cTw-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 980F780183C; Sat, 11 Jul 2020 10:04:39 +0000 (UTC) Received: from kamzik.brq.redhat.com (unknown [10.40.192.42]) by smtp.corp.redhat.com (Postfix) with ESMTP id EA87619D61; Sat, 11 Jul 2020 10:04:37 +0000 (UTC) From: Andrew Jones To: kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu Subject: [PATCH 1/5] KVM: arm64: pvtime: steal-time is only supported when configured Date: Sat, 11 Jul 2020 12:04:30 +0200 Message-Id: <20200711100434.46660-2-drjones@redhat.com> In-Reply-To: <20200711100434.46660-1-drjones@redhat.com> References: <20200711100434.46660-1-drjones@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Cc: pbonzini@redhat.com, steven.price@arm.com, maz@kernel.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 Don't confuse the guest by saying steal-time is supported when it hasn't been configured by userspace and won't work. Signed-off-by: Andrew Jones --- arch/arm64/kvm/pvtime.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/arm64/kvm/pvtime.c b/arch/arm64/kvm/pvtime.c index f7b52ce1557e..2b22214909be 100644 --- a/arch/arm64/kvm/pvtime.c +++ b/arch/arm64/kvm/pvtime.c @@ -42,9 +42,12 @@ long kvm_hypercall_pv_features(struct kvm_vcpu *vcpu) switch (feature) { case ARM_SMCCC_HV_PV_TIME_FEATURES: - case ARM_SMCCC_HV_PV_TIME_ST: val = SMCCC_RET_SUCCESS; break; + case ARM_SMCCC_HV_PV_TIME_ST: + if (vcpu->arch.steal.base != GPA_INVALID) + val = SMCCC_RET_SUCCESS; + break; } return val; -- 2.25.4 _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm