From: Dave Hansen <dave.hansen@intel.com>
To: Dexuan Cui <decui@microsoft.com>,
"'ak@linux.intel.com'" <ak@linux.intel.com>,
"'arnd@arndb.de'" <arnd@arndb.de>,
"'bp@alien8.de'" <bp@alien8.de>,
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"Williams, Dan J" <dan.j.williams@intel.com>,
"'dave.hansen@linux.intel.com'" <dave.hansen@linux.intel.com>,
Haiyang Zhang <haiyangz@microsoft.com>,
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"'jane.chu@oracle.com'" <jane.chu@oracle.com>,
"'kirill.shutemov@linux.intel.com'"
<kirill.shutemov@linux.intel.com>,
KY Srinivasan <kys@microsoft.com>,
"'linux-arch@vger.kernel.org'" <linux-arch@vger.kernel.org>,
"'linux-hyperv@vger.kernel.org'" <linux-hyperv@vger.kernel.org>,
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<sathyanarayanan.kuppuswamy@linux.intel.com>,
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"'x86@kernel.org'" <x86@kernel.org>
Cc: "'linux-kernel@vger.kernel.org'" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 1/6] x86/tdx: Support hypercalls for TDX guests on Hyper-V
Date: Wed, 23 Nov 2022 08:04:44 -0800 [thread overview]
Message-ID: <7601f686-ed35-5329-a54d-0c5c38dbd518@intel.com> (raw)
In-Reply-To: <SA1PR21MB13350DB14A0D6EC943FEF78BBF0C9@SA1PR21MB1335.namprd21.prod.outlook.com>
On 11/22/22 17:56, Dexuan Cui wrote:
>> From: Dexuan Cui
>> [...]
>> The existing asm code for __tdx_hypercall() passes through R10~R15
>> (see TDVMCALL_EXPOSE_REGS_MASK) to the (KVM) hypervisor.
>>
>> Unluckily, for Hyper-V, we need to pass through RDX, R8, R10 and R11
>> to Hyper-V, so I don't think I can use the existing __tdx_hypercall() ?
> I'm checking with the Hyper-V team to see if it's possible for them
> to not use RDX and R8, and use R12 and R13 instead. Will keep the
> thread updated.
That would be nice. But, to be honest, I don't expect them to change
the ABI for one OS. It's not a big deal to just make the function a bit
more flexible.
next prev parent reply other threads:[~2022-11-23 16:04 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-21 19:51 [PATCH 0/6] Support " Dexuan Cui
2022-11-21 19:51 ` [PATCH 1/6] x86/tdx: Support hypercalls for " Dexuan Cui
2022-11-21 20:38 ` Dave Hansen
2022-11-21 23:52 ` Kirill A. Shutemov
2022-11-23 1:37 ` Dexuan Cui
2022-11-23 1:56 ` Dexuan Cui
2022-11-23 16:04 ` Dave Hansen [this message]
2022-11-23 18:59 ` Dexuan Cui
2022-11-23 3:52 ` Sathyanarayanan Kuppuswamy
2022-11-23 14:40 ` Kirill A. Shutemov
2022-11-23 18:55 ` Dexuan Cui
2022-11-30 19:14 ` Dexuan Cui
2022-12-02 21:47 ` 'Kirill A. Shutemov'
2022-11-23 16:03 ` Dave Hansen
2022-11-21 19:51 ` [PATCH 2/6] x86/tdx: Retry TDVMCALL_MAP_GPA() when needed Dexuan Cui
2022-11-21 20:55 ` Dave Hansen
2022-11-23 2:55 ` Dexuan Cui
2022-11-22 0:01 ` Kirill A. Shutemov
2022-11-23 3:27 ` Dexuan Cui
2022-11-23 13:30 ` Michael Kelley (LINUX)
2022-11-28 0:07 ` Dexuan Cui
2022-11-21 19:51 ` [PATCH 3/6] x86/tdx: Support vmalloc() for tdx_enc_status_changed() Dexuan Cui
2022-11-21 21:00 ` Dave Hansen
2022-11-23 4:01 ` Dexuan Cui
2022-11-22 0:24 ` Kirill A. Shutemov
2022-11-23 23:51 ` Dexuan Cui
2022-11-24 7:51 ` Kirill A. Shutemov
2022-11-27 20:27 ` Dexuan Cui
2022-11-21 19:51 ` [PATCH 4/6] x86/hyperv: Add hv_isolation_type_tdx() to detect TDX guests Dexuan Cui
2022-11-21 21:01 ` Dave Hansen
2022-11-21 21:48 ` Borislav Petkov
2022-11-22 0:32 ` Sathyanarayanan Kuppuswamy
2022-11-23 19:13 ` Dexuan Cui
2022-11-21 19:51 ` [PATCH 5/6] x86/hyperv: Support hypercalls for " Dexuan Cui
2022-11-21 20:05 ` Dave Hansen
2022-11-23 2:14 ` Dexuan Cui
2022-11-23 14:47 ` Kirill A. Shutemov
2022-11-23 18:13 ` Dexuan Cui
2022-11-23 18:18 ` Sathyanarayanan Kuppuswamy
2022-11-23 19:07 ` Dexuan Cui
2022-11-23 14:45 ` Michael Kelley (LINUX)
2022-11-28 0:58 ` Dexuan Cui
2022-11-28 1:20 ` Michael Kelley (LINUX)
2022-11-28 1:36 ` Dexuan Cui
2022-11-28 1:21 ` Sathyanarayanan Kuppuswamy
2022-11-28 1:55 ` Dexuan Cui
2022-11-28 15:22 ` Dave Hansen
2022-11-28 19:03 ` Dexuan Cui
2022-11-28 19:11 ` Dave Hansen
2022-11-28 19:37 ` Dexuan Cui
2022-11-28 19:48 ` Dave Hansen
2022-11-28 20:36 ` Dexuan Cui
2022-11-28 21:15 ` Dave Hansen
2022-11-28 21:53 ` Dexuan Cui
2022-11-21 19:51 ` [PATCH 6/6] Drivers: hv: vmbus: Support " Dexuan Cui
2023-01-06 11:00 ` Zhi Wang
2023-01-09 6:59 ` Dexuan Cui
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