From: Dave Hansen <dave.hansen@intel.com>
To: Kai Huang <kai.huang@intel.com>,
linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Cc: linux-mm@kvack.org, kirill.shutemov@linux.intel.com,
tony.luck@intel.com, peterz@infradead.org, tglx@linutronix.de,
seanjc@google.com, pbonzini@redhat.com, david@redhat.com,
dan.j.williams@intel.com, rafael.j.wysocki@intel.com,
ying.huang@intel.com, reinette.chatre@intel.com,
len.brown@intel.com, ak@linux.intel.com,
isaku.yamahata@intel.com, chao.gao@intel.com,
sathyanarayanan.kuppuswamy@linux.intel.com, bagasdotme@gmail.com,
sagis@google.com, imammedo@redhat.com
Subject: Re: [PATCH v11 20/20] Documentation/x86: Add documentation for TDX host support
Date: Thu, 8 Jun 2023 16:56:49 -0700 [thread overview]
Message-ID: <971f158b-f28a-6c1f-c37c-fe67134d737c@intel.com> (raw)
In-Reply-To: <34853e0f8f38ec2fda66b0ba480d4df63b8aab43.1685887183.git.kai.huang@intel.com>
On 6/4/23 07:27, Kai Huang wrote:
> +There is no CPUID or MSR to detect the TDX module. The kernel detects it
> +by initializing it.
Is this really what you want to say?
If the module is there, SEAMCALL works. If not, it doesn't. The module
is assumed to be there when SEAMCALL works. Right?
Yeah, that first SEAMCALL is probably an initialization call, but feel
like that's beside the point.
next prev parent reply other threads:[~2023-06-08 23:56 UTC|newest]
Thread overview: 144+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <cover.1685887183.git.kai.huang@intel.com>
[not found] ` <af4e428ab1245e9441031438e606c14472daf927.1685887183.git.kai.huang@intel.com>
[not found] ` <a2da8af2-41a9-a0cf-dbe9-7f0a14bf05fe@linux.intel.com>
2023-06-06 22:58 ` [PATCH v11 02/20] x86/virt/tdx: Detect TDX during kernel boot Huang, Kai
2023-06-06 23:44 ` Isaku Yamahata
2023-06-19 12:12 ` David Hildenbrand
2023-06-19 23:58 ` Huang, Kai
[not found] ` <ec640452a4385d61bec97f8b761ed1ff38898504.1685887183.git.kai.huang@intel.com>
2023-06-06 23:55 ` [PATCH v11 05/20] x86/virt/tdx: Add SEAMCALL infrastructure Isaku Yamahata
2023-06-07 14:24 ` Dave Hansen
2023-06-07 18:53 ` Isaku Yamahata
2023-06-07 19:27 ` Dave Hansen
2023-06-07 19:47 ` Isaku Yamahata
2023-06-07 20:08 ` Sean Christopherson
2023-06-07 20:22 ` Dave Hansen
2023-06-08 0:51 ` Huang, Kai
2023-06-08 13:50 ` Dave Hansen
2023-06-07 22:56 ` Huang, Kai
2023-06-08 14:05 ` Dave Hansen
2023-06-19 12:52 ` David Hildenbrand
2023-06-20 10:37 ` Huang, Kai
2023-06-20 12:20 ` kirill.shutemov
2023-06-20 12:39 ` David Hildenbrand
2023-06-20 15:15 ` Dave Hansen
[not found] ` <cee2f2664aac3c5314896c6d14cba50f2617c0e5.1685887183.git.kai.huang@intel.com>
2023-06-08 0:08 ` [PATCH v11 03/20] x86/virt/tdx: Make INTEL_TDX_HOST depend on X86_X2APIC kirill.shutemov
[not found] ` <9b3582c9f3a81ae68b32d9997fcd20baecb63b9b.1685887183.git.kai.huang@intel.com>
2023-06-07 8:19 ` [PATCH v11 06/20] x86/virt/tdx: Handle SEAMCALL running out of entropy error Isaku Yamahata
2023-06-07 15:08 ` Dave Hansen
2023-06-07 23:36 ` Huang, Kai
2023-06-08 0:29 ` Dave Hansen
2023-06-08 0:08 ` kirill.shutemov
2023-06-09 14:42 ` Nikolay Borisov
2023-06-12 11:04 ` Huang, Kai
2023-06-19 13:00 ` David Hildenbrand
2023-06-20 10:39 ` Huang, Kai
2023-06-20 11:14 ` David Hildenbrand
2023-06-08 21:03 ` [PATCH v11 00/20] TDX host kernel support Dan Williams
2023-06-12 10:56 ` Huang, Kai
[not found] ` <468533166590ff5ed11730350c4af8cdb0b99165.1685887183.git.kai.huang@intel.com>
2023-06-07 15:48 ` [PATCH v11 09/20] x86/virt/tdx: Use all system memory when initializing TDX module as TDX memory Dave Hansen
2023-06-07 23:22 ` Huang, Kai
2023-06-08 22:40 ` kirill.shutemov
[not found] ` <f9148e67e968d7aed4707b67ea9b1aa761401255.1685887183.git.kai.huang@intel.com>
2023-06-07 15:54 ` [PATCH v11 10/20] x86/virt/tdx: Add placeholder to construct TDMRs to cover all TDX memory regions Dave Hansen
2023-06-07 15:57 ` Dave Hansen
2023-06-08 10:18 ` Huang, Kai
2023-06-08 22:52 ` kirill.shutemov
2023-06-12 2:21 ` Huang, Kai
2023-06-12 3:01 ` Dave Hansen
[not found] ` <927ec9871721d2a50f1aba7d1cf7c3be50e4f49b.1685887183.git.kai.huang@intel.com>
2023-06-07 16:05 ` [PATCH v11 11/20] x86/virt/tdx: Fill out " Dave Hansen
2023-06-08 10:48 ` Huang, Kai
2023-06-08 13:11 ` Dave Hansen
2023-06-12 2:33 ` Huang, Kai
2023-06-12 14:33 ` kirill.shutemov
2023-06-12 22:10 ` Huang, Kai
2023-06-13 10:18 ` kirill.shutemov
2023-06-13 23:19 ` Huang, Kai
2023-06-08 23:02 ` kirill.shutemov
2023-06-12 2:25 ` Huang, Kai
2023-06-09 4:01 ` Sathyanarayanan Kuppuswamy
2023-06-12 2:28 ` Huang, Kai
2023-06-14 12:31 ` Nikolay Borisov
2023-06-14 22:45 ` Huang, Kai
[not found] ` <409448809f7c78191aa27d6d2970ba1384c2d464.1685887183.git.kai.huang@intel.com>
2023-06-08 23:53 ` [PATCH v11 13/20] x86/virt/tdx: Designate reserved areas for all TDMRs kirill.shutemov
[not found] ` <4e6cd933edd2501147366df7a17e1087560a4320.1685887183.git.kai.huang@intel.com>
2023-06-08 23:53 ` [PATCH v11 14/20] x86/virt/tdx: Configure TDX module with the TDMRs and global KeyID kirill.shutemov
[not found] ` <30358db4eff961c69783bbd4d9f3e50932a9a759.1685887183.git.kai.huang@intel.com>
2023-06-08 23:53 ` [PATCH v11 15/20] x86/virt/tdx: Configure global KeyID on all packages kirill.shutemov
2023-06-15 8:12 ` Nikolay Borisov
2023-06-15 22:24 ` Huang, Kai
2023-06-19 14:56 ` kirill.shutemov
2023-06-19 23:38 ` Huang, Kai
[not found] ` <50386eddbb8046b0b222d385e56e8115ed566526.1685887183.git.kai.huang@intel.com>
2023-06-07 15:25 ` [PATCH v11 08/20] x86/virt/tdx: Get information about TDX module and TDX-capable memory Dave Hansen
2023-06-08 0:27 ` kirill.shutemov
2023-06-08 2:40 ` Huang, Kai
2023-06-08 11:41 ` kirill.shutemov
2023-06-08 13:13 ` Dave Hansen
2023-06-12 2:00 ` Huang, Kai
2023-06-08 23:29 ` Isaku Yamahata
2023-06-08 23:54 ` kirill.shutemov
2023-06-09 1:33 ` Isaku Yamahata
2023-06-09 10:02 ` kirill.shutemov
2023-06-12 2:00 ` Huang, Kai
2023-06-19 13:29 ` David Hildenbrand
2023-06-19 23:51 ` Huang, Kai
[not found] ` <7bd7d0c6196deb58b54d6e629603775844b1307d.1685887183.git.kai.huang@intel.com>
2023-06-09 10:03 ` [PATCH v11 16/20] x86/virt/tdx: Initialize all TDMRs kirill.shutemov
[not found] ` <17bcbe3e154415ee7a4c77489809a3db0c5ddf3f.1685887183.git.kai.huang@intel.com>
2023-06-09 10:14 ` [PATCH v11 17/20] x86/kexec: Flush cache of TDX private memory kirill.shutemov
[not found] ` <116cafb15625ac0bcda7b47143921d0c42061b69.1685887183.git.kai.huang@intel.com>
2023-06-09 13:17 ` [PATCH v11 19/20] x86/mce: Improve error log of kernel space TDX #MC due to erratum kirill.shutemov
2023-06-12 3:08 ` Huang, Kai
2023-06-12 7:59 ` kirill.shutemov
2023-06-12 13:51 ` Dave Hansen
2023-06-12 23:31 ` Huang, Kai
[not found] ` <5aa7506d4fedbf625e3fe8ceeb88af3be1ce97ea.1685887183.git.kai.huang@intel.com>
2023-06-09 13:23 ` [PATCH v11 18/20] x86: Handle TDX erratum to reset TDX private memory during kexec() and reboot kirill.shutemov
2023-06-12 3:06 ` Huang, Kai
2023-06-12 7:58 ` kirill.shutemov
2023-06-12 10:27 ` Huang, Kai
2023-06-12 11:48 ` kirill.shutemov
2023-06-12 13:18 ` David Laight
2023-06-12 13:47 ` Dave Hansen
2023-06-13 0:51 ` Huang, Kai
2023-06-13 11:05 ` kirill.shutemov
2023-06-14 0:15 ` Huang, Kai
2023-06-13 14:25 ` Dave Hansen
2023-06-13 23:18 ` Huang, Kai
2023-06-14 0:24 ` Dave Hansen
2023-06-14 0:38 ` Huang, Kai
2023-06-14 0:42 ` Huang, Kai
2023-06-19 11:43 ` Huang, Kai
2023-06-19 14:31 ` Dave Hansen
2023-06-19 14:46 ` kirill.shutemov
2023-06-19 23:35 ` Huang, Kai
2023-06-19 23:41 ` Dave Hansen
2023-06-20 0:56 ` Huang, Kai
2023-06-20 1:06 ` Dave Hansen
2023-06-20 7:58 ` Peter Zijlstra
2023-06-25 15:30 ` Huang, Kai
2023-06-25 23:26 ` Huang, Kai
2023-06-20 7:48 ` Peter Zijlstra
2023-06-20 8:11 ` Peter Zijlstra
2023-06-20 10:42 ` Huang, Kai
2023-06-20 10:56 ` Peter Zijlstra
2023-06-14 9:33 ` Huang, Kai
2023-06-14 10:02 ` kirill.shutemov
2023-06-14 10:58 ` Huang, Kai
2023-06-14 11:08 ` kirill.shutemov
2023-06-14 11:17 ` Huang, Kai
[not found] ` <4e108968c3294189ad150f62df1f146168036342.1685887183.git.kai.huang@intel.com>
2023-06-08 23:24 ` [PATCH v11 12/20] x86/virt/tdx: Allocate and set up PAMTs for TDMRs kirill.shutemov
2023-06-08 23:43 ` Dave Hansen
2023-06-12 2:52 ` Huang, Kai
2023-06-25 15:38 ` Huang, Kai
2023-06-15 7:48 ` Nikolay Borisov
[not found] ` <34853e0f8f38ec2fda66b0ba480d4df63b8aab43.1685887183.git.kai.huang@intel.com>
2023-06-08 23:56 ` Dave Hansen [this message]
2023-06-12 3:41 ` [PATCH v11 20/20] Documentation/x86: Add documentation for TDX host support Huang, Kai
2023-06-16 9:02 ` Nikolay Borisov
2023-06-16 16:26 ` Dave Hansen
[not found] ` <86f2a8814240f4bbe850f6a09fc9d0b934979d1b.1685887183.git.kai.huang@intel.com>
[not found] ` <20230606123821.exit7gyxs42dxotz@box.shutemov.name>
2023-06-06 22:58 ` [PATCH v11 04/20] x86/cpu: Detect TDX partial write machine check erratum Huang, Kai
2023-06-07 15:06 ` kirill.shutemov
2023-06-07 14:15 ` Dave Hansen
2023-06-07 22:43 ` Huang, Kai
2023-06-19 11:37 ` Huang, Kai
2023-06-20 15:44 ` Dave Hansen
2023-06-20 23:11 ` Huang, Kai
2023-06-19 12:21 ` David Hildenbrand
2023-06-20 10:31 ` Huang, Kai
2023-06-20 15:39 ` Dave Hansen
2023-06-20 16:03 ` David Hildenbrand
2023-06-20 16:21 ` Dave Hansen
[not found] ` <21b3a45cb73b4e1917c1eba75b7769781a15aa14.1685887183.git.kai.huang@intel.com>
2023-06-07 15:22 ` [PATCH v11 07/20] x86/virt/tdx: Add skeleton to enable TDX on demand Dave Hansen
2023-06-08 2:10 ` Huang, Kai
2023-06-08 13:43 ` Dave Hansen
2023-06-12 11:21 ` Huang, Kai
2023-06-19 13:16 ` David Hildenbrand
2023-06-19 23:28 ` Huang, Kai
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