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 861BEC433FE for ; Tue, 12 Oct 2021 04:36:45 +0000 (UTC) Received: from mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by mail.kernel.org (Postfix) with ESMTP id 3FE0461076 for ; Tue, 12 Oct 2021 04:36:45 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 3FE0461076 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 E8CF64B126; Tue, 12 Oct 2021 00:36:44 -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=@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 v4LaLszztEHY; Tue, 12 Oct 2021 00:36:44 -0400 (EDT) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 2B9E24B129; Tue, 12 Oct 2021 00:36:43 -0400 (EDT) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id C50474B099 for ; Tue, 12 Oct 2021 00:36:41 -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 V3HAPHNIykm4 for ; Tue, 12 Oct 2021 00:36:40 -0400 (EDT) Received: from mail-pg1-f202.google.com (mail-pg1-f202.google.com [209.85.215.202]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id B51454B10D for ; Tue, 12 Oct 2021 00:36:39 -0400 (EDT) Received: by mail-pg1-f202.google.com with SMTP id q23-20020a6562570000b029023cbfb4fd73so8011571pgv.14 for ; Mon, 11 Oct 2021 21:36:39 -0700 (PDT) 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=1CPPpn8KI1TMZ7GOgYY97mtQvxGoDF5nzyvksmCa+Fo=; b=Aa/p3+3YZnA0JDS8zWOXEXRZ2ZxkPrOLUOlaX3VyAf7LudzDEdPB3CLJ1YVKMe7L9G Wb8CyupAqRRvvfXLbGdNalJb9N1cIo9LYCHTskPgOkE6h6lfDwn+y9/uxIl8ygZCkOUD CNPuFzpb9ztvN1IozmoW1sGZpIedv4EjEUpJDMCY/hS2AgqJE8x+CTgsRrNjDDZqbME8 l90jqzqQhgg5JVyOWjLQ+mT6BS5zOh9zM/vLwhRCm0ZtrfpE4PF9CW58QdPjF02Dt0jz 6HZjuCYbrZSCLV4LiEZqfciTJsA8zVhac0Rle06fMkXQhjS2DhUlWMc4fK9x5TOiAgvs bU+g== 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=1CPPpn8KI1TMZ7GOgYY97mtQvxGoDF5nzyvksmCa+Fo=; b=wp4keqA2NCLrEPBwNjQnqp3DXNE05fjfbuuPMFJGOia01N6ROveUdutZwSdcfihsl1 Hbz6WslATYcTTVKC3k00hvGdcE9erF4iUa9DUAGsp+D8xld3vWRZQb6kNiAXpVV0Ya6y /mQnmHuEVnvHioRKVYBplfT52D9TJ67Pq7wSU8ckJTlv3z/eyUfP6a6Cq9zUQ/rAO5Rh DtyXnahaWQNSyHJ0S/7zg32Z98gXyPxT7oANKne1ZRInY9JuPg5cpODpJ7MHq3XC3IOi QYtVn9dGq4q4LWq7exapr0acfdyFBcCdZTxmgHzhjYIMTCQhdVDWa4OSGn9TT+0cE9CB Qz0w== X-Gm-Message-State: AOAM530TbolM2NLBb5ipYzvizBip0DBqZyUglEXjcAhP71KvvrjpHAdX irJFgGXW+gtIaWDL6hC8ml/h7igS33U= X-Google-Smtp-Source: ABdhPJw94QBclZTr8KRoQua2KsoSUSz/7GaRlZ1blagFA4MtNarr7PzT8SqQ7pJ7+LRN050secmOa62Uv/c= X-Received: from reiji-vws.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:15a3]) (user=reijiw job=sendgmr) by 2002:a05:6a00:984:b0:44c:e996:fc2d with SMTP id u4-20020a056a00098400b0044ce996fc2dmr20321105pfg.31.1634013398952; Mon, 11 Oct 2021 21:36:38 -0700 (PDT) Date: Mon, 11 Oct 2021 21:35:23 -0700 In-Reply-To: <20211012043535.500493-1-reijiw@google.com> Message-Id: <20211012043535.500493-14-reijiw@google.com> Mime-Version: 1.0 References: <20211012043535.500493-1-reijiw@google.com> X-Mailer: git-send-email 2.33.0.882.g93a45727a2-goog Subject: [RFC PATCH 13/25] KVM: arm64: Make ID registers without id_reg_info writable 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 Make ID registers that don't have id_reg_info writable. Signed-off-by: Reiji Watanabe --- arch/arm64/kvm/sys_regs.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index 71cfd62f9c85..2c092136cdff 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -1625,12 +1625,8 @@ static int __set_id_reg(struct kvm_vcpu *vcpu, if (err) return err; - /* Don't allow to change the reg unless the reg has id_reg_info */ - if (val != read_id_reg(vcpu, rd, raz) && !GET_ID_REG_INFO(encoding)) - return -EINVAL; - /* Don't allow to change the reg after the first KVM_RUN. */ - if (vcpu->arch.has_run_once) + if ((val != read_id_reg(vcpu, rd, raz)) && vcpu->arch.has_run_once) return -EINVAL; if (raz) -- 2.33.0.882.g93a45727a2-goog _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm