From: "Edgecombe, Rick P" <rick.p.edgecombe@intel.com>
To: "kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"Huang, Kai" <kai.huang@intel.com>
Cc: "Raj, Ashok" <ashok.raj@intel.com>,
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"Wysocki, Rafael J" <rafael.j.wysocki@intel.com>,
"kirill.shutemov@linux.intel.com"
<kirill.shutemov@linux.intel.com>, "Christopherson,,
Sean" <seanjc@google.com>, "mingo@redhat.com" <mingo@redhat.com>,
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<sathyanarayanan.kuppuswamy@linux.intel.com>,
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Subject: Re: [PATCH v13 18/22] x86/virt/tdx: Keep TDMRs when module initialization is successful
Date: Fri, 15 Sep 2023 23:10:42 +0000 [thread overview]
Message-ID: <88a72d16cee7fe7331439a0be85e2cf8d4381ecb.camel@intel.com> (raw)
In-Reply-To: <ee8019b33d57f2a4398a55cc5ebfdf21d918f811.1692962263.git.kai.huang@intel.com>
On Sat, 2023-08-26 at 00:14 +1200, Kai Huang wrote:
> On the platforms with the "partial write machine check" erratum, the
> kexec() needs to convert all TDX private pages back to normal before
> booting to the new kernel. Otherwise, the new kernel may get
> unexpected
> machine check.
>
> There's no existing infrastructure to track TDX private pages.
> Change
> to keep TDMRs when module initialization is successful so that they
> can
> be used to find PAMTs.
>
> Signed-off-by: Kai Huang <kai.huang@intel.com>
Reviewed-by: Rick Edgecombe <rick.p.edgecombe@intel.com>
next prev parent reply other threads:[~2023-09-15 23:11 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-25 12:14 [PATCH v13 00/22] TDX host kernel support Kai Huang
2023-08-25 12:14 ` [PATCH v13 01/22] x86/virt/tdx: Detect TDX during kernel boot Kai Huang
2023-09-08 15:19 ` Dave Hansen
2023-08-25 12:14 ` [PATCH v13 02/22] x86/tdx: Define TDX supported page sizes as macros Kai Huang
2023-08-25 12:14 ` [PATCH v13 03/22] x86/virt/tdx: Make INTEL_TDX_HOST depend on X86_X2APIC Kai Huang
2023-08-25 12:14 ` [PATCH v13 04/22] x86/cpu: Detect TDX partial write machine check erratum Kai Huang
2023-09-08 15:22 ` Dave Hansen
2023-09-11 12:39 ` Huang, Kai
2023-08-25 12:14 ` [PATCH v13 05/22] x86/virt/tdx: Handle SEAMCALL no entropy error in common code Kai Huang
2023-09-08 16:21 ` Dave Hansen
2023-09-11 11:41 ` Huang, Kai
2023-08-25 12:14 ` [PATCH v13 06/22] x86/virt/tdx: Add SEAMCALL error printing for module initialization Kai Huang
2023-09-07 12:45 ` Nikolay Borisov
2023-09-08 10:33 ` Huang, Kai
2023-09-08 10:38 ` Nikolay Borisov
2023-09-08 11:00 ` Huang, Kai
2023-09-08 16:31 ` Dave Hansen
2023-09-11 12:07 ` Huang, Kai
2023-08-25 12:14 ` [PATCH v13 07/22] x86/virt/tdx: Add skeleton to enable TDX on demand Kai Huang
2023-09-07 14:19 ` Nikolay Borisov
2023-09-08 10:16 ` Huang, Kai
2023-08-25 12:14 ` [PATCH v13 08/22] x86/virt/tdx: Get information about TDX module and TDX-capable memory Kai Huang
2023-08-25 12:14 ` [PATCH v13 09/22] x86/virt/tdx: Use all system memory when initializing TDX module as TDX memory Kai Huang
2023-08-25 12:14 ` [PATCH v13 10/22] x86/virt/tdx: Add placeholder to construct TDMRs to cover all TDX memory regions Kai Huang
2023-08-25 12:14 ` [PATCH v13 11/22] x86/virt/tdx: Fill out " Kai Huang
2023-08-25 12:14 ` [PATCH v13 12/22] x86/virt/tdx: Allocate and set up PAMTs for TDMRs Kai Huang
2023-08-25 12:14 ` [PATCH v13 13/22] x86/virt/tdx: Designate reserved areas for all TDMRs Kai Huang
2023-08-25 12:14 ` [PATCH v13 14/22] x86/virt/tdx: Configure TDX module with the TDMRs and global KeyID Kai Huang
2023-08-25 12:14 ` [PATCH v13 15/22] x86/virt/tdx: Configure global KeyID on all packages Kai Huang
2023-08-25 12:14 ` [PATCH v13 16/22] x86/virt/tdx: Initialize all TDMRs Kai Huang
2023-08-25 12:14 ` [PATCH v13 17/22] x86/kexec: Flush cache of TDX private memory Kai Huang
2023-09-15 17:43 ` Edgecombe, Rick P
2023-09-15 17:50 ` Dave Hansen
2023-09-18 12:08 ` Huang, Kai
2023-09-18 15:44 ` Dave Hansen
2023-09-18 22:14 ` Huang, Kai
2023-08-25 12:14 ` [PATCH v13 18/22] x86/virt/tdx: Keep TDMRs when module initialization is successful Kai Huang
2023-09-15 23:10 ` Edgecombe, Rick P [this message]
2023-09-15 23:10 ` Edgecombe, Rick P
2023-08-25 12:14 ` [PATCH v13 19/22] x86/virt/tdx: Improve readibility of module initialization error handling Kai Huang
2023-09-15 23:14 ` Edgecombe, Rick P
2023-08-25 12:14 ` [PATCH v13 20/22] x86/kexec(): Reset TDX private memory on platforms with TDX erratum Kai Huang
2023-09-14 21:36 ` Edgecombe, Rick P
2023-09-15 11:42 ` Huang, Kai
2023-09-15 16:42 ` Edgecombe, Rick P
2023-09-18 4:36 ` Huang, Kai
2023-08-25 12:14 ` [PATCH v13 21/22] x86/mce: Improve error log of kernel space TDX #MC due to erratum Kai Huang
2023-08-25 12:14 ` [PATCH v13 22/22] Documentation/x86: Add documentation for TDX host support Kai Huang
2023-09-11 11:32 ` Nikolay Borisov
2023-09-13 11:27 ` Huang, Kai
2023-09-28 7:48 ` [PATCH v13 00/22] TDX host kernel support Nikolay Borisov
2023-09-28 10:19 ` Huang, Kai
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