From: Jonathan Cameron <jonathan.cameron@huawei.com>
To: Xu Yilun <yilun.xu@linux.intel.com>
Cc: <linux-coco@lists.linux.dev>, <linux-pci@vger.kernel.org>,
<chao.gao@intel.com>, <dave.jiang@intel.com>,
<baolu.lu@linux.intel.com>, <yilun.xu@intel.com>,
<zhenzhong.duan@intel.com>, <kvm@vger.kernel.org>,
<rick.p.edgecombe@intel.com>, <dave.hansen@linux.intel.com>,
<dan.j.williams@intel.com>, <kas@kernel.org>, <x86@kernel.org>
Subject: Re: [PATCH v1 11/26] iommu/vt-d: Cache max domain ID to avoid redundant calculation
Date: Fri, 19 Dec 2025 11:53:09 +0000 [thread overview]
Message-ID: <20251219115309.00001727@huawei.com> (raw)
In-Reply-To: <20251117022311.2443900-12-yilun.xu@linux.intel.com>
On Mon, 17 Nov 2025 10:22:55 +0800
Xu Yilun <yilun.xu@linux.intel.com> wrote:
> From: Lu Baolu <baolu.lu@linux.intel.com>
>
> The cap_ndoms() helper calculates the maximum available domain ID from
> the value of capability register, which can be inefficient if called
> repeatedly. Cache the maximum supported domain ID in max_domain_id field
> during initialization to avoid redundant calls to cap_ndoms() throughout
> the IOMMU driver.
>
> No functionality change.
>
> Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Missing sign off of the last person to handle the patch. Xu Yilun.
That makes this unmergeable :(
next prev parent reply other threads:[~2025-12-19 11:53 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-17 2:22 [PATCH v1 00/26] PCI/TSM: TDX Connect: SPDM Session and IDE Establishment Xu Yilun
2025-11-17 2:22 ` [PATCH v1 01/26] coco/tdx-host: Introduce a "tdx_host" device Xu Yilun
2025-12-19 11:19 ` Jonathan Cameron
2025-11-17 2:22 ` [PATCH v1 02/26] x86/virt/tdx: Move bit definitions of TDX_FEATURES0 to public header Xu Yilun
2025-11-17 2:22 ` [PATCH v1 03/26] coco/tdx-host: Support Link TSM for TDX host Xu Yilun
2025-12-19 11:18 ` Jonathan Cameron
2025-11-17 2:22 ` [PATCH v1 04/26] x86/tdx: Move all TDX error defines into <asm/shared/tdx_errno.h> Xu Yilun
2025-11-17 2:22 ` [PATCH v1 05/26] mm: Add __free() support for __free_page() Xu Yilun
2025-12-19 11:22 ` Jonathan Cameron
2025-12-23 9:41 ` Xu Yilun
2025-11-17 2:22 ` [PATCH v1 06/26] x86/virt/tdx: Add tdx_page_array helpers for new TDX Module objects Xu Yilun
2025-11-17 16:41 ` Dave Hansen
2025-11-18 12:47 ` Xu Yilun
2026-02-11 16:24 ` dan.j.williams
2025-11-18 19:09 ` Dave Hansen
2025-11-19 16:20 ` dan.j.williams
2025-11-19 18:05 ` Dave Hansen
2025-11-19 19:10 ` dan.j.williams
2025-11-20 8:34 ` Xu Yilun
2025-11-20 6:28 ` Xu Yilun
2025-12-19 11:32 ` Jonathan Cameron
2025-12-23 10:07 ` Xu Yilun
2026-02-17 7:37 ` Tony Lindgren
2025-11-17 2:22 ` [PATCH v1 07/26] x86/virt/tdx: Read TDX global metadata for TDX Module Extensions Xu Yilun
2025-11-17 16:52 ` Dave Hansen
2025-11-18 13:00 ` Xu Yilun
2025-11-17 2:22 ` [PATCH v1 08/26] x86/virt/tdx: Add tdx_enable_ext() to enable of " Xu Yilun
2025-11-17 17:34 ` Dave Hansen
2025-11-18 17:14 ` Xu Yilun
2025-11-18 18:32 ` Dave Hansen
2025-11-20 6:09 ` Xu Yilun
2025-11-20 15:23 ` Dave Hansen
2025-11-20 18:00 ` dan.j.williams
2025-11-21 12:54 ` Xu Yilun
2025-11-21 15:15 ` Dave Hansen
2025-11-21 15:38 ` Dave Hansen
2025-11-24 10:41 ` Xu Yilun
2025-11-24 10:52 ` Xu Yilun
2025-12-08 10:02 ` Xu Yilun
2025-11-17 2:22 ` [PATCH v1 09/26] ACPICA: Add KEYP table definition Xu Yilun
2025-11-17 2:22 ` [PATCH v1 10/26] acpi: Add KEYP support to fw_table parsing Xu Yilun
2025-12-19 11:44 ` Jonathan Cameron
2025-11-17 2:22 ` [PATCH v1 11/26] iommu/vt-d: Cache max domain ID to avoid redundant calculation Xu Yilun
2025-12-19 11:53 ` Jonathan Cameron [this message]
2025-12-23 10:09 ` Xu Yilun
2025-11-17 2:22 ` [PATCH v1 12/26] iommu/vt-d: Reserve the MSB domain ID bit for the TDX module Xu Yilun
2025-12-19 11:51 ` Jonathan Cameron
2025-12-19 11:52 ` Jonathan Cameron
2025-12-23 10:39 ` Xu Yilun
2025-11-17 2:22 ` [PATCH v1 13/26] x86/virt/tdx: Read TDX Connect global metadata for TDX Connect Xu Yilun
2025-11-17 2:22 ` [PATCH v1 14/26] mm: Add __free() support for folio_put() Xu Yilun
2025-12-19 11:55 ` Jonathan Cameron
2025-12-23 10:44 ` Xu Yilun
2025-11-17 2:22 ` [PATCH v1 15/26] x86/virt/tdx: Extend tdx_page_array to support IOMMU_MT Xu Yilun
2025-11-17 19:19 ` Dave Hansen
2025-11-17 2:23 ` [PATCH v1 16/26] x86/virt/tdx: Add a helper to loop on TDX_INTERRUPTED_RESUMABLE Xu Yilun
2025-11-17 2:23 ` [PATCH v1 17/26] x86/virt/tdx: Add SEAMCALL wrappers for trusted IOMMU setup and clear Xu Yilun
2025-11-17 2:23 ` [PATCH v1 18/26] iommu/vt-d: Export a helper to do function for each dmar_drhd_unit Xu Yilun
2025-11-17 2:23 ` [PATCH v1 19/26] coco/tdx-host: Setup all trusted IOMMUs on TDX Connect init Xu Yilun
2025-11-17 2:23 ` [PATCH v1 20/26] coco/tdx-host: Add a helper to exchange SPDM messages through DOE Xu Yilun
2025-11-17 2:23 ` [PATCH v1 21/26] x86/virt/tdx: Add SEAMCALL wrappers for SPDM management Xu Yilun
2025-11-17 2:23 ` [PATCH v1 22/26] coco/tdx-host: Implement SPDM session setup Xu Yilun
2025-11-17 2:23 ` [PATCH v1 23/26] coco/tdx-host: Parse ACPI KEYP table to init IDE for PCI host bridges Xu Yilun
2025-12-19 12:02 ` Jonathan Cameron
2025-11-17 2:23 ` [PATCH v1 24/26] x86/virt/tdx: Add SEAMCALL wrappers for IDE stream management Xu Yilun
2025-11-17 2:23 ` [PATCH v1 25/26] coco/tdx-host: Implement IDE stream setup/teardown Xu Yilun
2025-11-17 2:23 ` [PATCH v1 26/26] coco/tdx-host: Finally enable SPDM session and IDE Establishment Xu Yilun
2025-12-19 12:06 ` Jonathan Cameron
2025-12-23 10:45 ` Xu Yilun
2025-11-17 23:05 ` [PATCH v1 00/26] PCI/TSM: TDX Connect: SPDM Session " Dave Hansen
2025-11-18 1:07 ` Xu Yilun
2025-11-19 15:18 ` Dave Hansen
2025-11-19 15:50 ` dan.j.williams
2025-11-19 16:19 ` Dave Hansen
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