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Subject: Re: [RFC v2-fix-v2 1/1] x86: Introduce generic protected guest
 abstraction
To:     Tom Lendacky <thomas.lendacky@amd.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Andy Lutomirski <luto@kernel.org>,
        Dave Hansen <dave.hansen@intel.com>,
        Tony Luck <tony.luck@intel.com>, Borislav Petkov <bp@alien8.de>
Cc:     Andi Kleen <ak@linux.intel.com>,
        Kirill Shutemov <kirill.shutemov@linux.intel.com>,
        Kuppuswamy Sathyanarayanan <knsathya@kernel.org>,
        Dan Williams <dan.j.williams@intel.com>,
        Raj Ashok <ashok.raj@intel.com>,
        Sean Christopherson <seanjc@google.com>,
        linux-kernel@vger.kernel.org
References: <20210527042356.3983284-2-sathyanarayanan.kuppuswamy@linux.intel.com>
 <20210601211417.2177598-1-sathyanarayanan.kuppuswamy@linux.intel.com>
 <dfb6b319-97ad-4c16-67ae-de4ce4ef415b@amd.com>
From:   "Kuppuswamy, Sathyanarayanan" 
        <sathyanarayanan.kuppuswamy@linux.intel.com>
Message-ID: <9852f974-6fb0-d7d6-326c-f92ba3b52af3@linux.intel.com>
Date:   Wed, 2 Jun 2021 11:29:40 -0700
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On 6/2/21 11:19 AM, Tom Lendacky wrote:
> This certainly doesn't capture all of the situations where true would need
> to be returned. For example, SEV, but not SEV-ES, requires that string I/O
> be unrolled, etc.

For AMD following cases should be true right? I can fix it in next version.

case VM_UNROLL_STRING_IO:
case VM_HOST_MEM_ENCRYPT:

-- 
Sathyanarayanan Kuppuswamy
Linux Kernel Developer