From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:33641) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dE5o5-0007Yr-Kl for qemu-devel@nongnu.org; Thu, 25 May 2017 23:20:54 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dE5o0-00017B-MK for qemu-devel@nongnu.org; Thu, 25 May 2017 23:20:53 -0400 Received: from indium.canonical.com ([91.189.90.7]:44255) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dE5o0-000174-Fl for qemu-devel@nongnu.org; Thu, 25 May 2017 23:20:48 -0400 Received: from loganberry.canonical.com ([91.189.90.37]) by indium.canonical.com with esmtp (Exim 4.76 #1 (Debian)) id 1dE5nz-0004jE-2I for ; Fri, 26 May 2017 03:20:47 +0000 Received: from loganberry.canonical.com (localhost [127.0.0.1]) by loganberry.canonical.com (Postfix) with ESMTP id E2C7B2E80D9 for ; Fri, 26 May 2017 03:20:46 +0000 (UTC) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Date: Fri, 26 May 2017 03:15:14 -0000 From: Paul Goyette <1693667@bugs.launchpad.net> Reply-To: Bug 1693667 <1693667@bugs.launchpad.net> Sender: bounces@canonical.com Message-Id: <149576851455.3442.6872660890935328507.malonedeb@gac.canonical.com> Errors-To: bounces@canonical.com Subject: [Qemu-devel] [Bug 1693667] [NEW] -cpu haswell / broadwell have no MONITOR in features1 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Public bug reported: In qemu 2.9.0 if you run qemu-system-x86_64 -cpu Broadwell (or Haswell) then the CPU features1 flag include the SSE3 bit, but do NOT include the MONITOR/MWAIT bit. This is so even when the host includes the features. Additionally, running qemu in this manner results in several error messages: warning: TCG doesn't support requested feature: CPUID.01H:ECX.fma [bit 12] warning: TCG doesn't support requested feature: CPUID.01H:ECX.pcid [bit 17] warning: TCG doesn't support requested feature: CPUID.01H:ECX.x2apic [bit 2= 1] warning: TCG doesn't support requested feature: CPUID.01H:ECX.tsc-deadline = [bit 24] warning: TCG doesn't support requested feature: CPUID.01H:ECX.avx [bit 28] warning: TCG doesn't support requested feature: CPUID.01H:ECX.f16c [bit 29] warning: TCG doesn't support requested feature: CPUID.01H:ECX.rdrand [bit 3= 0] warning: TCG doesn't support requested feature: CPUID.07H:EBX.hle [bit 4] warning: TCG doesn't support requested feature: CPUID.07H:EBX.avx2 [bit 5] warning: TCG doesn't support requested feature: CPUID.07H:EBX.invpcid [bit = 10] warning: TCG doesn't support requested feature: CPUID.07H:EBX.rtm [bit 11] warning: TCG doesn't support requested feature: CPUID.07H:EBX.rdseed [bit 1= 8] warning: TCG doesn't support requested feature: CPUID.80000001H:ECX.3dnowpr= efetch (Among possible other uses, the lack of the MONITOR feature bit causes NetB= SD to fall-back on a check-and-pause loop while an application CPU is waiting to be told to proc= eed by the boot CPU.) ** Affects: qemu Importance: Undecided Status: New -- = You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1693667 Title: -cpu haswell / broadwell have no MONITOR in features1 Status in QEMU: New Bug description: In qemu 2.9.0 if you run qemu-system-x86_64 -cpu Broadwell (or Haswell) then the CPU features1 flag include the SSE3 bit, but do NOT include the MONITOR/MWAIT bit. This is so even when the host includes the features. = Additionally, running qemu in this manner results in several error messag= es: warning: TCG doesn't support requested feature: CPUID.01H:ECX.fma [bit 12] warning: TCG doesn't support requested feature: CPUID.01H:ECX.pcid [bit 1= 7] warning: TCG doesn't support requested feature: CPUID.01H:ECX.x2apic [bit= 21] warning: TCG doesn't support requested feature: CPUID.01H:ECX.tsc-deadlin= e [bit 24] warning: TCG doesn't support requested feature: CPUID.01H:ECX.avx [bit 28] warning: TCG doesn't support requested feature: CPUID.01H:ECX.f16c [bit 2= 9] warning: TCG doesn't support requested feature: CPUID.01H:ECX.rdrand [bit= 30] warning: TCG doesn't support requested feature: CPUID.07H:EBX.hle [bit 4] warning: TCG doesn't support requested feature: CPUID.07H:EBX.avx2 [bit 5] warning: TCG doesn't support requested feature: CPUID.07H:EBX.invpcid [bi= t 10] warning: TCG doesn't support requested feature: CPUID.07H:EBX.rtm [bit 11] warning: TCG doesn't support requested feature: CPUID.07H:EBX.rdseed [bit= 18] warning: TCG doesn't support requested feature: CPUID.80000001H:ECX.3dnow= prefetch = (Among possible other uses, the lack of the MONITOR feature bit causes Ne= tBSD to fall-back on a check-and-pause loop while an application CPU is waiting to be told to pr= oceed by the boot CPU.) 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