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, seanjc@google.com, pbonzini@redhat.com,
dan.j.williams@intel.com, rafael.j.wysocki@intel.com,
kirill.shutemov@linux.intel.com, reinette.chatre@intel.com,
len.brown@intel.com, tony.luck@intel.com, peterz@infradead.org,
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 v6 00/21] TDX host kernel support
Date: Wed, 26 Oct 2022 16:26:06 -0700 [thread overview]
Message-ID: <fb2d1c23-df8b-4f7f-ce3f-25ba9076e5fb@intel.com> (raw)
In-Reply-To: <cover.1666824663.git.kai.huang@intel.com>
On 10/26/22 16:15, Kai Huang wrote:
> To keep things simple, this series doesn't handle memory hotplug at all,
> but depends on the machine owner to not do any memory hotplug operation.
> For exmaple, the machine owner should not plug any NVDIMM and CXL memory
> into the machine, or use kmem driver to plug NVDIMM or CXL memory to the
> core-mm.
>
> This will be enhanced in the future after first submission. We are also
> looking into options on how to handle:
This is also known as the "hopes and prayers" approach to software
enabling. "Let's just hope and pray that nobody does these things which
we know are broken."
In the spirit of moving this submission forward, I'm willing to continue
to _review_ this series. But, I don't think it can go upstream until it
contains at least _some_ way to handle memory hotplug.
next prev parent reply other threads:[~2022-10-26 23:27 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-26 23:15 [PATCH v6 00/21] TDX host kernel support Kai Huang
2022-10-26 23:16 ` [PATCH v6 01/21] x86/tdx: Use enum to define page level of TDX supported page sizes Kai Huang
2022-10-27 7:08 ` Xiaoyao Li
2022-10-27 8:42 ` Huang, Kai
2022-10-27 13:51 ` Kirill A. Shutemov
2022-10-28 0:47 ` Huang, Kai
2022-10-27 22:28 ` Isaku Yamahata
2022-10-27 15:27 ` Dave Hansen
2022-10-28 0:10 ` Huang, Kai
2022-10-26 23:16 ` [PATCH v6 02/21] x86/virt/tdx: Detect TDX during kernel boot Kai Huang
2022-10-26 23:16 ` [PATCH v6 03/21] x86/virt/tdx: Disable TDX if X2APIC is not enabled Kai Huang
2022-10-26 23:16 ` [PATCH v6 04/21] x86/virt/tdx: Use all boot-time system memory as TDX memory Kai Huang
2022-10-26 23:16 ` [PATCH v6 05/21] x86/virt/tdx: Add skeleton to initialize TDX on demand Kai Huang
2022-10-26 23:16 ` [PATCH v6 06/21] x86/virt/tdx: Implement functions to make SEAMCALL Kai Huang
2022-10-26 23:16 ` [PATCH v6 07/21] x86/virt/tdx: Shut down TDX module in case of error Kai Huang
2022-10-26 23:16 ` [PATCH v6 08/21] x86/virt/tdx: Do TDX module global initialization Kai Huang
2022-10-26 23:16 ` [PATCH v6 09/21] x86/virt/tdx: Do logical-cpu scope TDX module initialization Kai Huang
2022-10-26 23:16 ` [PATCH v6 10/21] x86/virt/tdx: Get information about TDX module and TDX-capable memory Kai Huang
2022-10-26 23:16 ` [PATCH v6 11/21] x86/virt/tdx: Sanity check all TDX memory ranges are convertible memory Kai Huang
2022-10-26 23:16 ` [PATCH v6 12/21] x86/virt/tdx: Add placeholder to construct TDMRs to cover all TDX memory regions Kai Huang
2022-10-27 15:31 ` Andi Kleen
2022-10-28 2:21 ` Huang, Kai
2022-11-03 8:55 ` Huang, Kai
2022-11-03 15:05 ` Dave Hansen
2022-11-03 22:07 ` Huang, Kai
2022-10-26 23:16 ` [PATCH v6 13/21] x86/virt/tdx: Create " Kai Huang
2022-10-26 23:16 ` [PATCH v6 14/21] x86/virt/tdx: Allocate and set up PAMTs for TDMRs Kai Huang
2022-10-26 23:16 ` [PATCH v6 15/21] x86/virt/tdx: Set up reserved areas for all TDMRs Kai Huang
2022-10-26 23:16 ` [PATCH v6 16/21] x86/virt/tdx: Reserve TDX module global KeyID Kai Huang
2022-10-27 12:40 ` Andi Kleen
2022-10-28 1:24 ` Huang, Kai
2022-10-26 23:16 ` [PATCH v6 17/21] x86/virt/tdx: Configure TDX module with TDMRs and " Kai Huang
2022-10-26 23:16 ` [PATCH v6 18/21] x86/virt/tdx: Configure global KeyID on all packages Kai Huang
2022-10-27 12:35 ` Andi Kleen
2022-10-28 1:07 ` Huang, Kai
2022-10-26 23:16 ` [PATCH v6 19/21] x86/virt/tdx: Initialize all TDMRs Kai Huang
2022-10-27 12:30 ` Andi Kleen
2022-10-28 1:08 ` Huang, Kai
2022-10-26 23:16 ` [PATCH v6 20/21] x86/virt/tdx: Flush cache in kexec() when TDX is enabled Kai Huang
2022-10-26 23:16 ` [PATCH v6 21/21] Documentation/x86: Add documentation for TDX host support Kai Huang
2022-10-27 12:38 ` Andi Kleen
2022-10-28 2:31 ` Huang, Kai
2022-10-28 12:52 ` Bagas Sanjaya
2022-10-28 14:16 ` Dave Hansen
2022-10-26 23:26 ` Dave Hansen [this message]
2022-10-26 23:51 ` [PATCH v6 00/21] TDX host kernel support Huang, Kai
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