From: "Edgecombe, Rick P" <rick.p.edgecombe@intel.com>
To: "yilun.xu@linux.intel.com" <yilun.xu@linux.intel.com>
Cc: "kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"linux-coco@lists.linux.dev" <linux-coco@lists.linux.dev>,
"Huang, Kai" <kai.huang@intel.com>,
"Li, Xiaoyao" <xiaoyao.li@intel.com>,
"Hansen, Dave" <dave.hansen@intel.com>,
"Zhao, Yan Y" <yan.y.zhao@intel.com>,
"Wu, Binbin" <binbin.wu@intel.com>,
"kas@kernel.org" <kas@kernel.org>,
"seanjc@google.com" <seanjc@google.com>,
"mingo@redhat.com" <mingo@redhat.com>,
"pbonzini@redhat.com" <pbonzini@redhat.com>,
"tglx@linutronix.de" <tglx@linutronix.de>,
"Yamahata, Isaku" <isaku.yamahata@intel.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"kirill.shutemov@linux.intel.com"
<kirill.shutemov@linux.intel.com>,
"Annapurve, Vishal" <vannapurve@google.com>,
"Gao, Chao" <chao.gao@intel.com>, "bp@alien8.de" <bp@alien8.de>,
"x86@kernel.org" <x86@kernel.org>
Subject: Re: [PATCH v4 04/16] x86/virt/tdx: Allocate page bitmap for Dynamic PAMT
Date: Wed, 7 Jan 2026 14:41:44 +0000 [thread overview]
Message-ID: <44fb20f8cfaa732eb34c3f5d3a3ff0c22c713939.camel@intel.com> (raw)
In-Reply-To: <aV32uDSqEDOgYp6L@yilunxu-OptiPlex-7050>
On Wed, 2026-01-07 at 14:01 +0800, Xu Yilun wrote:
> > I do think this is a good area for cleanup, but let's not overhaul
> > it
> > just to get a small incremental benefit. If we need a new interface
> > in
>
> Agree. I definitely don't want a new TDX module interface for now.
No, I was suggesting to think about a new TDX module interface if that
is what it takes to really simplify it. For example, something like a
consistent TDH.SYS.RDALL. For TDX module changes to be available in the
future (for example at the time of the other optional metadata), we
actually need to start the process now.
next prev parent reply other threads:[~2026-01-07 14:41 UTC|newest]
Thread overview: 106+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-21 0:51 [PATCH v4 00/16] TDX: Enable " Rick Edgecombe
2025-11-21 0:51 ` [PATCH v4 01/16] x86/tdx: Move all TDX error defines into <asm/shared/tdx_errno.h> Rick Edgecombe
2025-11-25 22:30 ` Huang, Kai
2025-11-25 22:44 ` Huang, Kai
2025-11-26 23:15 ` Edgecombe, Rick P
2025-11-26 23:14 ` Edgecombe, Rick P
2025-11-21 0:51 ` [PATCH v4 02/16] x86/tdx: Add helpers to check return status codes Rick Edgecombe
2025-11-24 8:56 ` Binbin Wu
2025-11-24 19:31 ` Edgecombe, Rick P
2025-11-25 23:07 ` Huang, Kai
2025-11-26 23:26 ` Edgecombe, Rick P
2025-11-21 0:51 ` [PATCH v4 03/16] x86/virt/tdx: Simplify tdmr_get_pamt_sz() Rick Edgecombe
2025-11-24 9:26 ` Binbin Wu
2025-11-24 19:47 ` Edgecombe, Rick P
2025-11-25 1:27 ` Binbin Wu
2025-11-21 0:51 ` [PATCH v4 04/16] x86/virt/tdx: Allocate page bitmap for Dynamic PAMT Rick Edgecombe
2025-11-25 1:50 ` Binbin Wu
2025-11-26 17:56 ` Edgecombe, Rick P
2025-12-24 9:10 ` Xu Yilun
2026-01-05 22:06 ` Edgecombe, Rick P
2026-01-06 4:01 ` Xu Yilun
2026-01-06 17:00 ` Edgecombe, Rick P
2026-01-07 6:01 ` Xu Yilun
2026-01-07 14:41 ` Edgecombe, Rick P [this message]
2026-01-08 12:53 ` Xu Yilun
2026-01-08 16:52 ` Edgecombe, Rick P
2026-01-09 2:18 ` Xu Yilun
2026-01-09 16:05 ` Edgecombe, Rick P
2026-01-12 0:24 ` Xu Yilun
2025-11-21 0:51 ` [PATCH v4 05/16] x86/virt/tdx: Allocate reference counters for PAMT memory Rick Edgecombe
2025-11-21 0:51 ` [PATCH v4 06/16] x86/virt/tdx: Improve PAMT refcounts allocation for sparse memory Rick Edgecombe
2025-11-25 3:15 ` Binbin Wu
2025-11-26 20:47 ` Edgecombe, Rick P
2025-11-27 15:57 ` Kiryl Shutsemau
2025-12-01 22:14 ` Edgecombe, Rick P
2025-11-26 14:45 ` Nikolay Borisov
2025-11-26 20:47 ` Edgecombe, Rick P
2025-11-27 7:36 ` Nikolay Borisov
2025-12-11 0:07 ` Edgecombe, Rick P
2025-11-27 16:04 ` Kiryl Shutsemau
2025-11-21 0:51 ` [PATCH v4 07/16] x86/virt/tdx: Add tdx_alloc/free_page() helpers Rick Edgecombe
2025-11-25 8:09 ` Binbin Wu
2025-11-26 22:28 ` Edgecombe, Rick P
2026-01-29 1:19 ` Sean Christopherson
2026-01-29 17:18 ` Edgecombe, Rick P
2026-01-29 19:09 ` Sean Christopherson
2026-01-29 19:12 ` Edgecombe, Rick P
2025-11-26 1:21 ` Huang, Kai
2025-11-26 22:28 ` Edgecombe, Rick P
2025-11-27 12:29 ` Nikolay Borisov
2025-12-01 22:31 ` Edgecombe, Rick P
2025-11-27 16:11 ` Nikolay Borisov
2025-12-01 22:39 ` Edgecombe, Rick P
2025-12-02 7:38 ` Nikolay Borisov
2025-12-02 20:02 ` Edgecombe, Rick P
2025-12-03 13:46 ` Kiryl Shutsemau
2025-12-03 13:48 ` Nikolay Borisov
2025-12-03 15:41 ` Dave Hansen
2025-12-03 18:15 ` Edgecombe, Rick P
2025-12-03 18:21 ` Dave Hansen
2025-12-03 19:59 ` Edgecombe, Rick P
2025-12-03 20:13 ` Dave Hansen
2025-12-03 21:39 ` Edgecombe, Rick P
2025-12-03 21:40 ` Dave Hansen
2025-12-08 9:15 ` Yan Zhao
2025-12-08 20:27 ` Edgecombe, Rick P
2026-01-16 23:17 ` Sean Christopherson
2026-01-16 23:25 ` Edgecombe, Rick P
2026-01-16 23:40 ` Dave Hansen
2025-11-21 0:51 ` [PATCH v4 08/16] x86/virt/tdx: Optimize " Rick Edgecombe
2025-11-21 0:51 ` [PATCH v4 09/16] KVM: TDX: Allocate PAMT memory for TD control structures Rick Edgecombe
2025-11-25 9:11 ` Binbin Wu
2025-11-21 0:51 ` [PATCH v4 10/16] KVM: TDX: Allocate PAMT memory for vCPU " Rick Edgecombe
2025-11-25 9:14 ` Binbin Wu
2025-11-21 0:51 ` [PATCH v4 11/16] KVM: TDX: Add x86 ops for external spt cache Rick Edgecombe
2026-01-17 0:53 ` Sean Christopherson
2026-01-19 2:31 ` Yan Zhao
2026-01-20 8:42 ` Huang, Kai
2026-01-20 9:18 ` Yan Zhao
2026-01-20 10:00 ` Huang, Kai
2026-01-20 19:53 ` Edgecombe, Rick P
2026-01-21 22:12 ` Sean Christopherson
2026-01-21 22:34 ` Edgecombe, Rick P
2025-11-21 0:51 ` [PATCH v4 12/16] x86/virt/tdx: Add helpers to allow for pre-allocating pages Rick Edgecombe
2025-11-26 3:40 ` Binbin Wu
2025-11-26 5:21 ` Binbin Wu
2025-11-26 22:33 ` Edgecombe, Rick P
2025-11-27 2:38 ` Binbin Wu
2026-01-20 7:10 ` Huang, Kai
2026-01-20 7:46 ` Yan Zhao
2026-01-20 8:01 ` Huang, Kai
2026-01-17 1:02 ` Sean Christopherson
2026-01-21 0:52 ` Sean Christopherson
2026-01-21 0:58 ` Edgecombe, Rick P
2025-11-21 0:51 ` [PATCH v4 13/16] KVM: TDX: Handle PAMT allocation in fault path Rick Edgecombe
2025-11-26 5:56 ` Binbin Wu
2025-11-26 22:33 ` Edgecombe, Rick P
2025-11-21 0:51 ` [PATCH v4 14/16] KVM: TDX: Reclaim PAMT memory Rick Edgecombe
2025-11-26 8:53 ` Binbin Wu
2025-11-26 22:58 ` Edgecombe, Rick P
2025-11-21 0:51 ` [PATCH v4 15/16] x86/virt/tdx: Enable Dynamic PAMT Rick Edgecombe
2025-11-21 0:51 ` [PATCH v4 16/16] Documentation/x86: Add documentation for TDX's " Rick Edgecombe
2025-11-26 10:33 ` Binbin Wu
2025-11-26 20:05 ` Edgecombe, Rick P
2025-11-24 20:18 ` [PATCH v4 00/16] TDX: Enable " Sagi Shahar
2025-11-25 20:19 ` Vishal Annapurve
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