From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AH8x227AUJ+reqddyGxgdxloUB+ZeciNjBMeWBY9OuAf63QXVvJJjwMzUNWYstONDQUspqeFvhtx ARC-Seal: i=1; a=rsa-sha256; t=1517506776; cv=none; d=google.com; s=arc-20160816; b=UFnzwkGQGzvPDtN5pIqwK8Q4rT6Td+ltDuraC71JmN2+CAqtOEQZrOmT5ahVrpMo8s Kejt+J7mj4JdFEvuXIYOPXskcE78Ijxed+inY/sINYbQUvOHyeSnSSUMlRRLV05ewqOq riqoJtpAhYBSZSznXOXy+RMrxulpoA39Z2WcaYI6+fmNp5d+pctV8dVqg8brTR6YzgrQ IIwnEB5oxzt9NhLeeAARJau3nDszEVRwcXJ3cbkMpyNdVUgUzmgSpegD5kiQgXMsRp2z NGB0d5RmKgNiCEEUJexERxM04phE3I8uAFy8R422zf4/6U7pEolpI+EG8ShTinNJ49vI 6cpA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:precedence:content-language:in-reply-to :mime-version:user-agent:date:message-id:from:references:cc:to :subject:dkim-signature:arc-authentication-results; bh=ZZQvFy7DiwrUlyIRqpJzeyBz2W6Nr1tW7eIAUBrve9Y=; b=MUX8ROFMptf98vXGN0xua8aPVg4y7VOl782ngccbYsh7ZYJxmpNjtbND04Dre0ZlKW nCHPhGZTePhqs+DEhN7qJlsNQpF6KFTCEFEpikCIbSboTBWJLv02sMKkPYabaCYyb8k8 AI6i03v0FbUO6nfsbyXF94eL+BWlZY+nyW0VJ5icKoQ5VzYlX3IHDFDHxG1vmt0OlBti NNIx2LBusV6gQal+eOpK47g/pwyb6cFAWIxRPRmEgmft1OW9U1JRs3N5yDwkuXPpk12V re3oz8a8Z7zHseSZvC0O629pQN3mbT3j8msBdtI8edbQ2MAVB1Dq7fvgWzPDQEJl88ip kq4g== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@amazon.com header.s=amazon201209 header.b=G1pIHy18; spf=pass (google.com: domain of prvs=56348445f=karahmed@amazon.de designates 207.171.190.10 as permitted sender) smtp.mailfrom=prvs=56348445f=karahmed@amazon.de; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=amazon.com Authentication-Results: mx.google.com; dkim=pass header.i=@amazon.com header.s=amazon201209 header.b=G1pIHy18; spf=pass (google.com: domain of prvs=56348445f=karahmed@amazon.de designates 207.171.190.10 as permitted sender) smtp.mailfrom=prvs=56348445f=karahmed@amazon.de; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=amazon.com X-IronPort-AV: E=Sophos;i="5.46,444,1511827200"; d="scan'208";a="717790689" Subject: Re: [PATCH v5 4/5] KVM: VMX: Allow direct access to MSR_IA32_SPEC_CTRL To: David Woodhouse , Konrad Rzeszutek Wilk CC: Jim Mattson , KarimAllah Ahmed , kvm list , LKML , "the arch/x86 maintainers" , Asit Mallick , Arjan Van De Ven , Dave Hansen , Andi Kleen , "Andrea Arcangeli" , Linus Torvalds , Tim Chen , Thomas Gleixner , Dan Williams , Jun Nakajima , "Paolo Bonzini" , Greg KH , "Andy Lutomirski" , Ashok Raj References: <1517427467-28567-1-git-send-email-karahmed@amazon.de> <1517427467-28567-5-git-send-email-karahmed@amazon.de> <06cb88da-f355-41ed-380f-7daa8ddf6159@amazon.com> <20180201042650.GD21751@char.us.oracle.com> <1517491537.18619.307.camel@infradead.org> From: KarimAllah Ahmed Message-ID: Date: Thu, 1 Feb 2018 18:37:34 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.5.0 MIME-Version: 1.0 In-Reply-To: <1517491537.18619.307.camel@infradead.org> Content-Language: en-US X-Originating-IP: [10.43.161.67] X-ClientProxiedBy: EX13D11UWB002.ant.amazon.com (10.43.161.20) To EX13D01EUB003.ant.amazon.com (10.43.166.248) Content-Type: text/plain; charset="utf-8"; format="flowed" Content-Transfer-Encoding: base64 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1591113692084885209?= X-GMAIL-MSGID: =?utf-8?q?1591221185252136415?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: T24gMDIvMDEvMjAxOCAwMjoyNSBQTSwgRGF2aWQgV29vZGhvdXNlIHdyb3RlOgo+IAo+IAo+IE9u IFdlZCwgMjAxOC0wMS0zMSBhdCAyMzoyNiAtMDUwMCwgS29ucmFkIFJ6ZXN6dXRlayBXaWxrIHdy b3RlOgo+Pgo+Pj4gZGlmZiAtLWdpdCBhL2FyY2gveDg2L2t2bS92bXguYyBiL2FyY2gveDg2L2t2 bS92bXguYwo+Pj4gaW5kZXggNmE5ZjRlYy4uYmZjODBmZiAxMDA2NDQKPj4+IC0tLSBhL2FyY2gv eDg2L2t2bS92bXguYwo+Pj4gKysrIGIvYXJjaC94ODYva3ZtL3ZteC5jCj4+PiBAQCAtNTk0LDYg KzU5NCwxNCBAQCBzdHJ1Y3QgdmNwdV92bXggewo+Pj4gIMKgICNlbmRpZgo+Pj4gICAgCj4+PiAg wqDCoMKgwqDCoMKgwqB1NjTCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqAgYXJj aF9jYXBhYmlsaXRpZXM7Cj4+PiArwqDCoMKgwqDCoHU2NMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDC oMKgwqDCoMKgwqDCoCBzcGVjX2N0cmw7Cj4+PiArCj4+PiArwqDCoMKgwqDCoC8qCj4+PiArwqDC oMKgwqDCoCAqIFRoaXMgaW5kaWNhdGVzIHRoYXQ6Cj4+PiArwqDCoMKgwqDCoCAqIDEpIGd1ZXN0 X2NwdWlkX2hhcyhYODZfRkVBVFVSRV9JQlJTKSA9PSB0cnVlICYmCj4+PiArwqDCoMKgwqDCoCAq IDIpIFRoZSBndWVzdCBoYXMgYWN0dWFsbHkgaW5pdGlhdGVkIGEgd3JpdGUgYWdhaW5zdCB0aGUg TVNSLgo+Pj4gK8KgwqDCoMKgwqAgKi8KPj4+ICvCoMKgwqDCoMKgYm9vbCBzcGVjX2N0cmxfdXNl ZDsKPj4+ICAgIAo+Pj4gIMKgwqDCoMKgwqDCoMKgLyoKPj4+ICDCoMKgwqDCoMKgwqDCoCAqIFRo aXMgaW5kaWNhdGVzIHRoYXQ6Cj4gCj4gVGhhbmtzIGZvciBwZXJzaXN0aW5nIHdpdGggdGhlIGRl dGFpbHMgaGVyZSwgS2FyaW0uIEluIGFkZGl0aW9uIHRvCj4gS29ucmFkJ3MgaGVja2xpbmcgYXQg dGhlIGNvbW1lbnRzLCBJJ2xsIGFkZCBteSBvd24gcmVxdWVzdCB0byBoaXMuLi4KPiAKPiBJJ2Qg bGlrZSB0aGUgY29tbWVudCBmb3Igc3BlY19jdHJsX3VzZWQgdG8gZXhwbGFpbiB3aHkgaXQgaXNu J3QKPiBlbnRpcmVseSByZWR1bmRhbnQgd2l0aCB0aGUgc3BlY19jdHJsX2ludGVyY2VwdGVkKCkg ZnVuY3Rpb24uCj4gCj4gV2l0aG91dCBuZXN0aW5nLCBJIGJlbGlldmUgaXQgKndvdWxkKiBiZSBy ZWR1bmRhbnQsIGJ1dCB0aGUgZGlmZmVyZW5jZQo+IGNvbWVzIHdoZW4gYW4gTDIgaXMgcnVubmlu ZyBmb3Igd2hpY2ggTDEgaGFzIG5vdCBwZXJtaXR0ZWQgdGhlIE1TUiB0bwo+IGJlIHBhc3NlZCB0 aHJvdWdoLiBUaGF0J3Mgd2hlbiB3ZSBoYXZlIHNwZWNfY3RybF91c2VkID0gdHJ1ZSBidXQgdGhl Cj4gTVNSICppc24ndCogYWN0dWFsbHkgcGFzc2VkIHRocm91Z2ggaW4gdGhlIGFjdGl2ZSBtc3Jf Yml0bWFwLgo+IAo+IFF1ZXN0aW9uOiBpZiBzcGVjX2N0cmxfdXNlZCBpcyBhbHdheXMgZXF1aXZh bGVudCB0byB0aGUgaW50ZXJjZXB0IGJpdAo+IGluIHRoZSB2bWNzMDEubXNyX2JpdG1hcCwganVz dCBub3QgdGhlIGd1ZXN0IGJpdG1hcC4uLiBzaG91bGQgd2UgZGl0Y2gKPiBpdCBhbmQgYWx3YXlz IHVzZSB0aGUgYml0IGZyb20gdGhlIHZtY3MwMS5tc3JfYml0bWFwPwoKSWYgSSB1c2VkIHRoZSB2 bWNzMDEubXNyX2JpdG1hcCwgc3BlY19jdHJsX3VzZWQgd2lsbCBhbHdheXMgYmUgdHJ1ZSBpZgpM MCBwYXNzZWQgaXQgdG8gTDEuIEV2ZW4gaWYgTDEgZGlkIG5vdCBhY3R1YWxseSBwYXNzIGl0IHRv IEwyIGFuZCBldmVuCmlmIEwyIGhhcyBub3Qgd3JpdHRlbiB0byBpdCB5ZXQgKCF1c2VkKS4KClRo aXMgcHJldHR5IG11Y2ggcmVuZGVycyB0aGUgc2hvcnQtY2lyY3VpdCBhdApuZXN0ZWRfdm14X21l cmdlX21zcl9iaXRtYXAgdXNlbGVzczoKCiAgICAgICAgIGlmICghbmVzdGVkX2NwdV9oYXNfdmly dF94MmFwaWNfbW9kZSh2bWNzMTIpICYmCiAgICAgICAgICAgICAhdG9fdm14KHZjcHUpLT5wcmVk X2NtZF91c2VkICYmCiAgICAgICAgICAgICAhdG9fdm14KHZjcHUpLT5zcGVjX2N0cmxfdXNlZCkK ICAgICAgICAgICAgICAgICByZXR1cm4gZmFsc2U7CgouLi4gYW5kIHRoZSBkZWZhdWx0IHBhdGgg d2lsbCBiZSBrdm1fdmNwdV9ncGFfdG9fcGFnZSArIGttYXAuCgpUaGF0IGJlaW5nIHNhaWQsIEkg aGF2ZSB0byBhZG1pdCB0aGUgbG9naWMgZm9yIHNwZWNfY3RybF91c2VkIGlzIG5vdApwZXJmZWN0 IGVpdGhlci4KCklmIEwxIG9yIGFueSBvZiB0aGUgTDJzIHRvdWNoZWQgdGhlIE1TUiwgc3BlY19j dHJsX3VzZWQgd2lsbCBiZSBzZXQgdG8KdHJ1ZS4gU28gaWYgb25lIEwyIHVzZWQgdGhlIE1TUiwg YWxsIG90aGVyIEwycyB3aWxsIGFsc28gc2tpcCB0aGUgc2hvcnQtCmNpcmN1aXQgbWVudGlvbmVk IGFib3ZlIGFuZCBlbmQgdXAgKmFsd2F5cyogZ29pbmcgdGhyb3VnaAprdm1fdmNwdV9ncGFfdG9f cGFnZSArIGttYXAuCgpNYXliZSBhbGwgb2YgdGhpcyBpcyBvdmVyLXRoaW5raW5nIGFuZCBpbiBy ZWFsaXR5IHRoZSBzaG9ydC1jaXJjdWl0CmFib3ZlIGlzIHJlYWxseSB1c2VsZXNzIGFuZCBhbGwg TDIgZ3Vlc3RzIGFyZSBoYXBwaWx5IHVzaW5nIHgyYXBpYyA6KQoKPiAKPiBTb3JyeSA6KQo+IApB bWF6b24gRGV2ZWxvcG1lbnQgQ2VudGVyIEdlcm1hbnkgR21iSApCZXJsaW4gLSBEcmVzZGVuIC0g QWFjaGVuCm1haW4gb2ZmaWNlOiBLcmF1c2Vuc3RyLiAzOCwgMTAxMTcgQmVybGluCkdlc2NoYWVm dHNmdWVocmVyOiBEci4gUmFsZiBIZXJicmljaCwgQ2hyaXN0aWFuIFNjaGxhZWdlcgpVc3QtSUQ6 IERFMjg5MjM3ODc5CkVpbmdldHJhZ2VuIGFtIEFtdHNnZXJpY2h0IENoYXJsb3R0ZW5idXJnIEhS QiAxNDkxNzMgQgo=