From: "Michael S. Tsirkin" <mst@redhat.com>
To: Alejandro Jimenez <alejandro.j.jimenez@oracle.com>
Cc: Sairaj Kodilkar <sarunkod@amd.com>,
qemu-devel@nongnu.org, pbonzini@redhat.com,
richard.henderson@linaro.org, eduardo@habkost.net,
peterx@redhat.com, david@redhat.com, philmd@linaro.org,
marcel.apfelbaum@gmail.com, alex.williamson@redhat.com,
vasant.hegde@amd.com, suravee.suthikulpanit@amd.com,
santosh.shukla@amd.com, Wei.Huang2@amd.com,
joao.m.martins@oracle.com, boris.ostrovsky@oracle.com
Subject: Re: [PATCH 03/18] amd_iommu: Add support for IOMMU notifier
Date: Thu, 17 Apr 2025 12:34:04 -0400 [thread overview]
Message-ID: <20250417123305-mutt-send-email-mst@kernel.org> (raw)
In-Reply-To: <8245dc10-4dff-4a89-b4e4-dad5025544fa@oracle.com>
On Thu, Apr 17, 2025 at 12:21:57PM -0400, Alejandro Jimenez wrote:
> > guest boots with iommu.passthrough=0
>
> is already broken today if you are using the AMD vIOMMU with VFIO devices.
> We cannot stop guests from doing invalid things if they choose to do so.
Yea no need for an "unbreak things" flag - just unbreak them.
--
MST
next prev parent reply other threads:[~2025-04-17 16:34 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-04-14 2:02 [PATCH 00/18] AMD vIOMMU: DMA remapping support for VFIO devices Alejandro Jimenez
2025-04-14 2:02 ` [PATCH 01/18] memory: Adjust event ranges to fit within notifier boundaries Alejandro Jimenez
2025-04-14 2:02 ` [PATCH 02/18] amd_iommu: Add helper function to extract the DTE Alejandro Jimenez
2025-04-16 11:36 ` Sairaj Kodilkar
2025-04-16 13:29 ` Alejandro Jimenez
2025-04-16 18:50 ` Michael S. Tsirkin
2025-04-16 22:37 ` Alejandro Jimenez
2025-04-14 2:02 ` [PATCH 03/18] amd_iommu: Add support for IOMMU notifier Alejandro Jimenez
2025-04-16 12:14 ` Sairaj Kodilkar
2025-04-16 22:17 ` Alejandro Jimenez
2025-04-17 10:19 ` Sairaj Kodilkar
2025-04-17 16:21 ` Alejandro Jimenez
2025-04-17 16:34 ` Michael S. Tsirkin [this message]
2025-04-18 6:33 ` Sairaj Kodilkar
2025-04-14 2:02 ` [PATCH 04/18] amd_iommu: Unmap all address spaces under the AMD IOMMU on reset Alejandro Jimenez
2025-04-14 2:02 ` [PATCH 05/18] amd_iommu: Toggle memory regions based on address translation mode Alejandro Jimenez
2025-04-22 12:17 ` Sairaj Kodilkar
2025-04-28 21:10 ` Alejandro Jimenez
2025-04-14 2:02 ` [PATCH 06/18] amd_iommu: Set all address spaces to default translation mode on reset Alejandro Jimenez
2025-04-14 2:02 ` [PATCH 07/18] amd_iommu: Return an error when unable to read PTE from guest memory Alejandro Jimenez
2025-04-14 2:02 ` [PATCH 08/18] amd_iommu: Helper to decode size of page invalidation command Alejandro Jimenez
2025-04-22 12:26 ` Sairaj Kodilkar
2025-04-28 21:16 ` Alejandro Jimenez
2025-04-14 2:02 ` [PATCH 09/18] amd_iommu: Add helpers to walk AMD v1 Page Table format Alejandro Jimenez
2025-04-17 12:40 ` CLEMENT MATHIEU--DRIF
2025-04-17 15:27 ` Alejandro Jimenez
2025-04-18 5:30 ` CLEMENT MATHIEU--DRIF
2025-04-23 6:28 ` Sairaj Kodilkar
2025-04-14 2:02 ` [PATCH 10/18] amd_iommu: Add a page walker to sync shadow page tables on invalidation Alejandro Jimenez
2025-04-17 15:14 ` Ethan MILON
2025-04-17 15:45 ` Alejandro Jimenez
2025-04-14 2:02 ` [PATCH 11/18] amd_iommu: Sync shadow page tables on page invalidation Alejandro Jimenez
2025-04-22 12:38 ` Sairaj Kodilkar
2025-04-22 12:38 ` Sairaj Kodilkar
2025-04-29 19:47 ` Alejandro Jimenez
2025-04-14 2:02 ` [PATCH 12/18] amd_iommu: Add replay callback Alejandro Jimenez
2025-04-14 2:02 ` [PATCH 13/18] amd_iommu: Invalidate address translations on INVALIDATE_IOMMU_ALL Alejandro Jimenez
2025-04-14 2:02 ` [PATCH 14/18] amd_iommu: Toggle address translation on device table entry invalidation Alejandro Jimenez
2025-04-22 12:48 ` Sairaj Kodilkar
2025-04-29 20:45 ` Alejandro Jimenez
2025-04-14 2:02 ` [PATCH 15/18] amd_iommu: Use iova_tree records to determine large page size on UNMAP Alejandro Jimenez
2025-04-14 2:02 ` [PATCH 16/18] amd_iommu: Do not assume passthrough translation when DTE[TV]=0 Alejandro Jimenez
2025-04-23 6:06 ` Sairaj Kodilkar
2025-04-14 2:02 ` [PATCH 17/18] amd_iommu: Refactor amdvi_page_walk() to use common code for page walk Alejandro Jimenez
2025-04-14 2:02 ` [PATCH 18/18] amd_iommu: Do not emit I/O page fault events during replay() Alejandro Jimenez
2025-04-23 6:18 ` Sairaj Kodilkar
2025-04-23 10:45 ` [PATCH 00/18] AMD vIOMMU: DMA remapping support for VFIO devices Sairaj Kodilkar
2025-04-23 10:56 ` Sairaj Kodilkar
2025-04-24 11:49 ` Joao Martins
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