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Message-ID: <5fa85e81a54800737a1417be368f0061324e0aec.camel@intel.com>
Date: Thu, 4 Feb 2021 02:03:16 +0000
From: "Edgecombe, Rick P" <rick.p.edgecombe@...el.com>
To: "pbonzini@...hat.com" <pbonzini@...hat.com>,
"seanjc@...gle.com" <seanjc@...gle.com>
CC: "jmattson@...gle.com" <jmattson@...gle.com>,
"joro@...tes.org" <joro@...tes.org>,
"vkuznets@...hat.com" <vkuznets@...hat.com>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"thomas.lendacky@....com" <thomas.lendacky@....com>,
"kvm@...r.kernel.org" <kvm@...r.kernel.org>,
"brijesh.singh@....com" <brijesh.singh@....com>,
"wanpengli@...cent.com" <wanpengli@...cent.com>
Subject: Re: [PATCH 07/12] KVM: x86: SEV: Treat C-bit as legal GPA bit
regardless of vCPU mode
On Wed, 2021-02-03 at 16:01 -0800, Sean Christopherson wrote:
>
> - unsigned long cr3_lm_rsvd_bits;
> + u64 reserved_gpa_bits;
LAM defines bits above the GFN in CR3:
https://software.intel.com/content/www/us/en/develop/download/intel-architecture-instruction-set-extensions-programming-reference.html
KVM doesn't support this today of course, but it might be confusing to
try to combine the two concepts.
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