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From: Jason Gunthorpe <jgg@nvidia.com>
To: Uladzislau Rezki <urezki@gmail.com>
Cc: Ethan Zhao <etzhao1900@gmail.com>,
	Baolu Lu <baolu.lu@linux.intel.com>,
	Dave Hansen <dave.hansen@intel.com>,
	Joerg Roedel <joro@8bytes.org>, Will Deacon <will@kernel.org>,
	Robin Murphy <robin.murphy@arm.com>,
	Kevin Tian <kevin.tian@intel.com>, Jann Horn <jannh@google.com>,
	Vasant Hegde <vasant.hegde@amd.com>,
	Alistair Popple <apopple@nvidia.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Jean-Philippe Brucker <jean-philippe@linaro.org>,
	Andy Lutomirski <luto@kernel.org>, Yi Lai <yi1.lai@intel.com>,
	iommu@lists.linux.dev, security@kernel.org,
	linux-kernel@vger.kernel.org, stable@vger.kernel.org
Subject: Re: [PATCH v3 1/1] iommu/sva: Invalidate KVA range on kernel TLB flush
Date: Mon, 11 Aug 2025 09:55:59 -0300	[thread overview]
Message-ID: <20250811125559.GS184255@nvidia.com> (raw)
In-Reply-To: <aJm0znaAqBRWqOCT@pc636>

On Mon, Aug 11, 2025 at 11:15:58AM +0200, Uladzislau Rezki wrote:

> Agree, unless it is never considered as a hot path or something that can
> be really contented. It looks like you can use just a per-cpu llist to drain
> thinks.

I think we already largely agreed this was not a true fast path, I
don't think we need a per-cpu here.

But I would not make it extern unless there is a user?

Jason

  reply	other threads:[~2025-08-11 12:56 UTC|newest]

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-08-06  5:25 [PATCH v3 1/1] iommu/sva: Invalidate KVA range on kernel TLB flush Lu Baolu
2025-08-06 15:03 ` Dave Hansen
2025-08-06 15:52   ` Jason Gunthorpe
2025-08-06 16:04     ` Dave Hansen
2025-08-06 16:09       ` Jason Gunthorpe
2025-08-06 16:34         ` Dave Hansen
2025-08-06 16:42           ` Jason Gunthorpe
2025-08-07 14:40           ` Baolu Lu
2025-08-07 15:31             ` Dave Hansen
2025-08-08  5:15               ` Baolu Lu
2025-08-10  7:19                 ` Ethan Zhao
2025-08-11  9:15                   ` Uladzislau Rezki
2025-08-11 12:55                     ` Jason Gunthorpe [this message]
2025-08-15  9:23                       ` Baolu Lu
2025-08-11 13:55                     ` Dave Hansen
2025-08-11 14:56                       ` Uladzislau Rezki
2025-08-12  1:17                       ` Ethan Zhao
2025-08-15 14:35                         ` Dave Hansen
2025-08-11 12:57                 ` Jason Gunthorpe
2025-08-13  3:17                   ` Ethan Zhao
2025-08-18  1:34                   ` Baolu Lu
2025-08-07 19:51             ` Jason Gunthorpe
2025-08-08  2:57               ` Tian, Kevin
2025-08-15  9:16                 ` Baolu Lu
2025-08-15  9:46                   ` Tian, Kevin
2025-08-18  5:58                     ` Baolu Lu
2025-08-15 14:31                   ` Dave Hansen
2025-08-18  6:08                     ` Baolu Lu
2025-08-18  6:21                 ` Baolu Lu
2025-08-21  7:05                   ` Tian, Kevin
2025-08-23  3:26                     ` Baolu Lu
2025-08-25 22:36                       ` Dave Hansen
2025-08-26  1:25                         ` Baolu Lu
2025-08-26  2:49                           ` Baolu Lu
2025-08-26 14:22                             ` Dave Hansen
2025-08-26 14:33                               ` Matthew Wilcox
2025-08-26 14:57                                 ` Dave Hansen
2025-08-27 10:58                               ` Baolu Lu
2025-08-27 23:31                                 ` Dave Hansen
2025-08-28  5:31                                   ` Baolu Lu
2025-08-28  7:08                                     ` Tian, Kevin
2025-08-28 18:56                                       ` Dave Hansen
2025-08-28 19:10                                         ` Jason Gunthorpe
2025-08-28 19:31                                           ` Dave Hansen
2025-08-28 19:39                                             ` Matthew Wilcox
2025-08-26 16:21                             ` Dave Hansen
2025-08-27  6:34                               ` Baolu Lu
2025-08-08  5:08               ` Baolu Lu
2025-08-07  6:53   ` Baolu Lu
2025-08-14  4:48 ` Ethan Zhao
2025-08-15  7:48   ` Baolu Lu

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