From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CABEB140E38 for ; Fri, 4 Oct 2024 09:05:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728032727; cv=none; b=KbDUWIzCVGBEIyBu4Z9OTe3qeHh1Fuo+X+cJJ6m6X84Sf9T4prrTFK3RPqDZ1G0UoCkaeqaZG3sMNOP/fHDrTJpRPae8WaB7c3aJVU0xqkFCuqlyvJHmzkuBa1AXrnyQV/f7RKdcT47Pkvz0PcdgQJVG7IQ0KI/a0ANexEoVy8A= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728032727; c=relaxed/simple; bh=Sq4OcjY0EeQRIC1hZSJmdjUw6cPr6dDZEOS3Jwdd+DI=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=AOZaUaKSeiq09Bda7elsQBuAfVXlc5/U17F3SfwaB/3stZ4u9SeH9VS7S3T1RX0yuQycTUXe1MCHfNYhPTJytBkag0O0i+zH/g4qrJgHIx90yDsrul8ifXe+6pOstXWmdLKd2BxC//in+y6H2z2PeJ7C6hKs1KRBJp2MuwB4LE8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=OOg8pXuH; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="OOg8pXuH" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1728032725; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=+34TNPttbqJWXuUaZlwkoaWIFsW5o7Y4R1pY/2NowPU=; b=OOg8pXuHABwLA0IwJ2MeKMIf5/9SoCKI0RwAwA9dnfDgLSUcSCo7KCUT+cyP7YCgEMHmST 5Dw9ZTIr9L9DNnOFb7ZX8dqMIZzu4y984IzngdKawM6fdTn/RW4BD7mxWHlrqBQMSbia5m G0G5UYeZdRcink/0tBZDxEgF+5FIknw= Received: from mail-wr1-f70.google.com (mail-wr1-f70.google.com [209.85.221.70]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-670-oiXSK1yaNqyUFXEG5Uco_w-1; Fri, 04 Oct 2024 05:05:23 -0400 X-MC-Unique: oiXSK1yaNqyUFXEG5Uco_w-1 Received: by mail-wr1-f70.google.com with SMTP id ffacd0b85a97d-37cda7514f8so975580f8f.0 for ; Fri, 04 Oct 2024 02:05:23 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1728032722; x=1728637522; h=mime-version:message-id:date:references:in-reply-to:subject:cc:to :from:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=+34TNPttbqJWXuUaZlwkoaWIFsW5o7Y4R1pY/2NowPU=; b=vTwrJAeEGcinEusjoFQaSNN6a8nODFNd4q1y++LlGPS6zgVVtjWzr0DrkH/49YYKRy VEm3pWnak6LSTdumXzrrU/dHN2LF+lwR3Moqp7Pl/COa4crtqt2GB69zJThrxnX0M6PI Q02qnKA/9+MLOarZIl3wZxWxP0PyunG4IsV2CMmFFrI/vYAKvYDGOq08NQiQUXSpmWK9 Xtgd8S2ciiFVTQR8d8cFzf1RcGXCpNLEzwU7dw1XZpMTJRFDUhsHLJDlVTiHjUpYOp6Q Sjkmj4Ll5U2t8N0e4rg0TC+ocVeQzO/y9kD7q6uz0ThGniY8RBFVbZ+ZpiAb304DbnOh vifw== X-Forwarded-Encrypted: i=1; AJvYcCU7pVpxDCSnJVQcvWKk7lilOREx3aHjwxp2os3xbtF94ThdosJW2qf7G+HWRxDeUlCy1elLhbnGPD7A71c=@vger.kernel.org X-Gm-Message-State: AOJu0YyBkWdMie0caYzd0J/12nCwKT1td+1eyKDCyZV0wflSJqY7WJ5t 5J4oi6LZZWEf3Gh1mjWPdGTesyGVza95P+eghsTPd5csyTb7+IFp7hmQgyoNbnW1k+SI6AI3P8z Ed23Wzc8SM0AjA13G1Q4k61j/wBx4xucKLAGweZdGpUiDclna4mo+BaklTClUN3etwN43ws62iy 1gljv1yT/0IiqiZHDpuzfAHjKhpQ8XZB1HH1rmAVYM0FMJLg== X-Received: by 2002:a05:6000:1884:b0:37c:cce8:4acc with SMTP id ffacd0b85a97d-37d049ea723mr4822650f8f.13.1728032722462; Fri, 04 Oct 2024 02:05:22 -0700 (PDT) X-Google-Smtp-Source: AGHT+IHZI65a4E0MWEudDsjrxjK4F+K9QmGtEmB+a+SuWRzGXeJWhv4eMOaxMFsitqPTzNLlOrah9g== X-Received: by 2002:a05:6000:1884:b0:37c:cce8:4acc with SMTP id ffacd0b85a97d-37d049ea723mr4822609f8f.13.1728032721982; Fri, 04 Oct 2024 02:05:21 -0700 (PDT) Received: from fedora (g2.ign.cz. [91.219.240.8]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-42f86a0afc1sm10545735e9.1.2024.10.04.02.05.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 04 Oct 2024 02:05:21 -0700 (PDT) From: Vitaly Kuznetsov To: Sean Christopherson , Sean Christopherson , Paolo Bonzini Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 07/11] KVM: selftests: Drop manual CR4.OSXSAVE enabling from CR4/CPUID sync test In-Reply-To: <20241003234337.273364-8-seanjc@google.com> References: <20241003234337.273364-1-seanjc@google.com> <20241003234337.273364-8-seanjc@google.com> Date: Fri, 04 Oct 2024 11:05:20 +0200 Message-ID: <87ldz4i6gf.fsf@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain Sean Christopherson writes: > Now that CR4.OSXSAVE is enabled by default, drop the manual enabling from > CR4/CPUID sync test and instead assert that CR4.OSXSAVE is enabled. > > Signed-off-by: Sean Christopherson > --- > tools/testing/selftests/kvm/x86_64/cr4_cpuid_sync_test.c | 7 ++----- > 1 file changed, 2 insertions(+), 5 deletions(-) > > diff --git a/tools/testing/selftests/kvm/x86_64/cr4_cpuid_sync_test.c b/tools/testing/selftests/kvm/x86_64/cr4_cpuid_sync_test.c > index da818afb7031..28cc66454601 100644 > --- a/tools/testing/selftests/kvm/x86_64/cr4_cpuid_sync_test.c > +++ b/tools/testing/selftests/kvm/x86_64/cr4_cpuid_sync_test.c > @@ -27,12 +27,9 @@ static void guest_code(void) > [KVM_CPUID_EAX] = X86_FEATURE_OSXSAVE.function, > [KVM_CPUID_ECX] = X86_FEATURE_OSXSAVE.index, > }; > - uint64_t cr4; > > - /* turn on CR4.OSXSAVE */ > - cr4 = get_cr4(); > - cr4 |= X86_CR4_OSXSAVE; > - set_cr4(cr4); > + /* CR4.OSXSAVE should be enabled by default (for selftests vCPUs). */ > + GUEST_ASSERT(get_cr4() & X86_CR4_OSXSAVE); > > /* verify CR4.OSXSAVE == CPUID.OSXSAVE */ > GUEST_ASSERT(this_cpu_has(X86_FEATURE_OSXSAVE)); Reviewed-by: Vitaly Kuznetsov -- Vitaly