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From: "Nikunj A. Dadhania" <nikunj@amd.com>
To: Tom Lendacky <thomas.lendacky@amd.com>,
	linux-kernel@vger.kernel.org, x86@kernel.org,
	kvm@vger.kernel.org
Cc: bp@alien8.de, mingo@redhat.com, tglx@linutronix.de,
	dave.hansen@linux.intel.com, dionnaglaze@google.com,
	pgonda@google.com, seanjc@google.com, pbonzini@redhat.com
Subject: Re: [PATCH v7 03/16] virt: sev-guest: Add SNP guest request structure
Date: Sat, 27 Jan 2024 09:35:06 +0530	[thread overview]
Message-ID: <ff963228-56d3-4aa0-978d-3cc843b6af2e@amd.com> (raw)
In-Reply-To: <529ca51b-e698-5aa6-5af7-db2d00880559@amd.com>

On 1/27/2024 2:46 AM, Tom Lendacky wrote:
> On 12/20/23 09:13, Nikunj A Dadhania wrote:
>> Add a snp_guest_req structure to simplify the function arguments. The
>> structure will be used to call the SNP Guest message request API
>> instead of passing a long list of parameters.
>>
>> Update snp_issue_guest_request() prototype to include the new guest request
>> structure and move the prototype to sev_guest.h.
>>
>> Signed-off-by: Nikunj A Dadhania <nikunj@amd.com>
>> Tested-by: Peter Gonda <pgonda@google.com>
>> ---
>>   .../x86/include/asm}/sev-guest.h              |  18 +++
>>   arch/x86/include/asm/sev.h                    |   8 --
>>   arch/x86/kernel/sev.c                         |  15 ++-
>>   drivers/virt/coco/sev-guest/sev-guest.c       | 108 +++++++++++-------
>>   4 files changed, 93 insertions(+), 56 deletions(-)
>>   rename {drivers/virt/coco/sev-guest => arch/x86/include/asm}/sev-guest.h (78%)
>>
>> diff --git a/drivers/virt/coco/sev-guest/sev-guest.h b/arch/x86/include/asm/sev-guest.h
>> similarity index 78%
>> rename from drivers/virt/coco/sev-guest/sev-guest.h
>> rename to arch/x86/include/asm/sev-guest.h
>> index ceb798a404d6..27cc15ad6131 100644
>> --- a/drivers/virt/coco/sev-guest/sev-guest.h
>> +++ b/arch/x86/include/asm/sev-guest.h
>> @@ -63,4 +63,22 @@ struct snp_guest_msg {
>>       u8 payload[4000];
>>   } __packed;
>>   +struct snp_guest_req {
>> +    void *req_buf;
>> +    size_t req_sz;
>> +
>> +    void *resp_buf;
>> +    size_t resp_sz;
>> +
>> +    void *data;
>> +    size_t data_npages;
>> +
>> +    u64 exit_code;
>> +    unsigned int vmpck_id;
>> +    u8 msg_version;
>> +    u8 msg_type;
>> +};
>> +
>> +int snp_issue_guest_request(struct snp_guest_req *req, struct snp_req_data *input,
>> +                struct snp_guest_request_ioctl *rio);
> 
> This seems odd to have in this file. It's arch/x86/kernel/sev.c that exports the call and so this should probably stay in arch/x86/include/asm/sev.h and put the struct there, too, no?

The prototype is removed in 7/16, I have it here to make sure that compilation does not break with minimal churn.

Regards
Nikunj


  reply	other threads:[~2024-01-27  4:05 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-12-20 15:13 [PATCH v7 00/16] Add Secure TSC support for SNP guests Nikunj A Dadhania
2023-12-20 15:13 ` [PATCH v7 01/16] virt: sev-guest: Use AES GCM crypto library Nikunj A Dadhania
2024-01-25 10:36   ` Borislav Petkov
2024-01-27  3:54     ` Nikunj A. Dadhania
2023-12-20 15:13 ` [PATCH v7 02/16] virt: sev-guest: Replace dev_dbg with pr_debug Nikunj A Dadhania
2023-12-20 15:13 ` [PATCH v7 03/16] virt: sev-guest: Add SNP guest request structure Nikunj A Dadhania
2024-01-25 11:59   ` Borislav Petkov
2024-01-27  4:01     ` Nikunj A. Dadhania
2024-01-31 13:58     ` Nikunj A. Dadhania
2024-02-01 10:29       ` Borislav Petkov
2024-02-01 11:10         ` Nikunj A. Dadhania
2024-02-01 14:07           ` Borislav Petkov
2024-02-02  3:50             ` Nikunj A. Dadhania
2024-02-02 16:14               ` Borislav Petkov
2024-02-05  9:23                 ` Nikunj A. Dadhania
2024-02-06 10:04                   ` Borislav Petkov
2024-01-26 21:16   ` Tom Lendacky
2024-01-27  4:05     ` Nikunj A. Dadhania [this message]
2023-12-20 15:13 ` [PATCH v7 04/16] virt: sev-guest: Add vmpck_id to snp_guest_dev struct Nikunj A Dadhania
2023-12-20 15:13 ` [PATCH v7 05/16] x86/sev: Cache the secrets page address Nikunj A Dadhania
2023-12-20 15:13 ` [PATCH v7 06/16] virt: sev-guest: Move SNP Guest command mutex Nikunj A Dadhania
2024-01-26 22:11   ` Tom Lendacky
2024-01-27  4:06     ` Nikunj A. Dadhania
2023-12-20 15:13 ` [PATCH v7 07/16] x86/sev: Move and reorganize sev guest request api Nikunj A Dadhania
2023-12-20 15:13 ` [PATCH v7 08/16] x86/mm: Add generic guest initialization hook Nikunj A Dadhania
2023-12-20 15:13 ` [PATCH v7 09/16] x86/cpufeatures: Add synthetic Secure TSC bit Nikunj A Dadhania
2023-12-20 15:13 ` [PATCH v7 10/16] x86/sev: Add Secure TSC support for SNP guests Nikunj A Dadhania
2024-02-01 15:46   ` Paolo Bonzini
2024-02-01 15:48     ` Paolo Bonzini
2023-12-20 15:13 ` [PATCH v7 11/16] x86/sev: Change TSC MSR behavior for Secure TSC enabled guests Nikunj A Dadhania
2023-12-20 15:13 ` [PATCH v7 12/16] x86/sev: Prevent RDTSC/RDTSCP interception " Nikunj A Dadhania
2023-12-20 15:13 ` [PATCH v7 13/16] x86/kvmclock: Skip kvmclock when Secure TSC is available Nikunj A Dadhania
2023-12-20 15:13 ` [PATCH v7 14/16] x86/sev: Mark Secure TSC as reliable Nikunj A Dadhania
2023-12-20 15:13 ` [PATCH v7 15/16] x86/cpu/amd: Do not print FW_BUG for Secure TSC Nikunj A Dadhania
2023-12-20 15:13 ` [PATCH v7 16/16] x86/sev: Enable Secure TSC for SNP guests Nikunj A Dadhania
2024-01-25  6:08 ` [PATCH v7 00/16] Add Secure TSC support " Nikunj A. Dadhania
2024-01-26  1:00   ` Dionna Amalie Glaze
2024-01-27  4:10     ` Nikunj A. Dadhania

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