Message-ID: <fe100597-26be-23e4-bfa9-f45aa27b7966@amd.com>
Date:   Fri, 17 Feb 2023 13:47:55 +0100
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Subject: Re: [RFC PATCH V3 00/16] x86/hyperv/sev: Add AMD sev-snp enlightened
 guest support on hyperv
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From:   "Gupta, Pankaj" <pankaj.gupta@amd.com>
To:     Tianyu Lan <ltykernel@gmail.com>, luto@kernel.org,
        tglx@linutronix.de, mingo@redhat.com, bp@alien8.de,
        dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com,
        seanjc@google.com, pbonzini@redhat.com, jgross@suse.com,
        tiala@microsoft.com, kirill@shutemov.name,
        jiangshan.ljs@antgroup.com, peterz@infradead.org,
        ashish.kalra@amd.com, srutherford@google.com,
        akpm@linux-foundation.org, anshuman.khandual@arm.com,
        pawan.kumar.gupta@linux.intel.com, adrian.hunter@intel.com,
        daniel.sneddon@linux.intel.com, alexander.shishkin@linux.intel.com,
        sandipan.das@amd.com, ray.huang@amd.com, brijesh.singh@amd.com,
        michael.roth@amd.com, thomas.lendacky@amd.com,
        venu.busireddy@oracle.com, sterritt@google.com,
        tony.luck@intel.com, samitolvanen@google.com, fenghua.yu@intel.com
Cc:     linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
        linux-hyperv@vger.kernel.org, linux-arch@vger.kernel.org
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 <fac62414-06f9-0454-8393-f039aa30571a@amd.com>
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On 2/9/2023 12:36 PM, Gupta, Pankaj wrote:
> Hi Tianyu,
> 
>> This patchset is to add AMD sev-snp enlightened guest
>> support on hyperv. Hyperv uses Linux direct boot mode
>> to boot up Linux kernel and so it needs to pvalidate
>> system memory by itself.
>>
>> In hyperv case, there is no boot loader and so cc blob
>> is prepared by hypervisor. In this series, hypervisor
>> set the cc blob address directly into boot parameter
>> of Linux kernel. If the magic number on cc blob address
>> is valid, kernel will read cc blob.
>>
>> Shared memory between guests and hypervisor should be
>> decrypted and zero memory after decrypt memory. The data
>> in the target address. It maybe smearedto avoid smearing
>> data.
>>
>> Introduce #HV exception support in AMD sev snp code and
>> #HV handler.
> 
> I am interested to test the Linux guest #HV exception handling (patches 
> 12-16 in this series) for the restricted interrupt injection with the 
> Linux/KVM host.
> 
> Do you have a git tree which or any base commit on which
> I can use to apply these patches?

Never mind. I could apply the patches 12-16 on master (except minor 
tweak in patch 14). Now, will try to test.

Thanks,
Pankaj