From: Dave Hansen <dave.hansen@intel.com>
To: "Huang, Kai" <kai.huang@intel.com>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Cc: "Luck, Tony" <tony.luck@intel.com>,
"david@redhat.com" <david@redhat.com>,
"bagasdotme@gmail.com" <bagasdotme@gmail.com>,
"ak@linux.intel.com" <ak@linux.intel.com>,
"Wysocki, Rafael J" <rafael.j.wysocki@intel.com>,
"kirill.shutemov@linux.intel.com"
<kirill.shutemov@linux.intel.com>,
"Chatre, Reinette" <reinette.chatre@intel.com>, "Christopherson,,
Sean" <seanjc@google.com>,
"pbonzini@redhat.com" <pbonzini@redhat.com>,
"tglx@linutronix.de" <tglx@linutronix.de>,
"Yamahata, Isaku" <isaku.yamahata@intel.com>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"Shahar, Sagi" <sagis@google.com>,
"peterz@infradead.org" <peterz@infradead.org>,
"imammedo@redhat.com" <imammedo@redhat.com>,
"Gao, Chao" <chao.gao@intel.com>,
"Brown, Len" <len.brown@intel.com>,
"sathyanarayanan.kuppuswamy@linux.intel.com"
<sathyanarayanan.kuppuswamy@linux.intel.com>,
"Huang, Ying" <ying.huang@intel.com>,
"Williams, Dan J" <dan.j.williams@intel.com>
Subject: Re: [PATCH v9 05/18] x86/virt/tdx: Add SEAMCALL infrastructure
Date: Tue, 14 Feb 2023 09:27:44 -0800 [thread overview]
Message-ID: <5f29c397-d723-a18e-e0f0-660f9f22d998@intel.com> (raw)
In-Reply-To: <16470ac19325d99947bad3d4b16f6982b0facafc.camel@intel.com>
On 2/14/23 00:57, Huang, Kai wrote:
> Consider this case:
>
> 1) KVM does VMXON for all online cpus (a VM created)
> 2) Another kernel component is calling tdx_enable()
> 3) KVM does VMXOFF for all online cpus (last VM is destroyed)
Doctor, it hurts when I...
Then let's just call tdx_enable() from other kernel components.
Kai, I'm worried that this is, again, making things more complicated
than they have to be.
next prev parent reply other threads:[~2023-02-14 17:27 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-13 11:59 [PATCH v9 00/18] TDX host kernel support Kai Huang
2023-02-13 11:59 ` [PATCH v9 01/18] x86/tdx: Define TDX supported page sizes as macros Kai Huang
2023-02-13 11:59 ` [PATCH v9 02/18] x86/virt/tdx: Detect TDX during kernel boot Kai Huang
2023-02-13 11:59 ` [PATCH v9 03/18] x86/virt/tdx: Make INTEL_TDX_HOST depend on X86_X2APIC Kai Huang
2023-02-13 11:59 ` [PATCH v9 04/18] x86/virt/tdx: Add skeleton to initialize TDX on demand Kai Huang
2023-02-14 12:46 ` Peter Zijlstra
2023-02-14 17:23 ` Dave Hansen
2023-02-14 21:08 ` Huang, Kai
2023-02-13 11:59 ` [PATCH v9 05/18] x86/virt/tdx: Add SEAMCALL infrastructure Kai Huang
2023-02-13 17:48 ` Dave Hansen
2023-02-13 21:21 ` Huang, Kai
2023-02-13 22:39 ` Dave Hansen
2023-02-13 23:22 ` Huang, Kai
2023-02-14 8:57 ` Huang, Kai
2023-02-14 17:27 ` Dave Hansen [this message]
2023-02-14 22:17 ` Huang, Kai
2023-02-14 12:42 ` Peter Zijlstra
2023-02-14 21:02 ` Huang, Kai
2023-02-13 11:59 ` [PATCH v9 06/18] x86/virt/tdx: Do TDX module global initialization Kai Huang
2023-02-13 11:59 ` [PATCH v9 07/18] x86/virt/tdx: Do TDX module per-cpu initialization Kai Huang
2023-02-13 17:59 ` Dave Hansen
2023-02-13 21:19 ` Huang, Kai
2023-02-13 22:43 ` Dave Hansen
2023-02-14 0:02 ` Huang, Kai
2023-02-14 14:12 ` Peter Zijlstra
2023-02-14 22:53 ` Huang, Kai
2023-02-15 9:16 ` Peter Zijlstra
2023-02-15 9:46 ` Huang, Kai
2023-02-15 13:25 ` Peter Zijlstra
2023-02-15 21:37 ` Huang, Kai
2023-03-06 14:26 ` Huang, Kai
2023-02-13 18:07 ` Dave Hansen
2023-02-13 21:13 ` Huang, Kai
2023-02-13 22:28 ` Dave Hansen
2023-02-13 23:43 ` Huang, Kai
2023-02-13 23:52 ` Dave Hansen
2023-02-14 0:09 ` Huang, Kai
2023-02-14 14:12 ` Peter Zijlstra
2023-02-14 12:59 ` Peter Zijlstra
2023-02-13 11:59 ` [PATCH v9 08/18] x86/virt/tdx: Get information about TDX module and TDX-capable memory Kai Huang
2023-02-13 11:59 ` [PATCH v9 09/18] x86/virt/tdx: Use all system memory when initializing TDX module as TDX memory Kai Huang
2023-02-14 3:30 ` Huang, Ying
2023-02-14 8:24 ` Huang, Kai
2023-02-13 11:59 ` [PATCH v9 10/18] x86/virt/tdx: Add placeholder to construct TDMRs to cover all TDX memory regions Kai Huang
2023-02-13 11:59 ` [PATCH v9 11/18] x86/virt/tdx: Fill out " Kai Huang
2023-02-13 11:59 ` [PATCH v9 12/18] x86/virt/tdx: Allocate and set up PAMTs for TDMRs Kai Huang
2023-02-13 11:59 ` [PATCH v9 13/18] x86/virt/tdx: Designate reserved areas for all TDMRs Kai Huang
2023-02-13 11:59 ` [PATCH v9 14/18] x86/virt/tdx: Configure TDX module with the TDMRs and global KeyID Kai Huang
2023-02-13 11:59 ` [PATCH v9 15/18] x86/virt/tdx: Configure global KeyID on all packages Kai Huang
2023-02-13 11:59 ` [PATCH v9 16/18] x86/virt/tdx: Initialize all TDMRs Kai Huang
2023-02-13 11:59 ` [PATCH v9 17/18] x86/virt/tdx: Flush cache in kexec() when TDX is enabled Kai Huang
2023-02-13 11:59 ` [PATCH v9 18/18] Documentation/x86: Add documentation for TDX host support Kai Huang
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