From: Jason Gunthorpe <jgg@nvidia.com>
To: Vasant Hegde <vasant.hegde@amd.com>
Cc: Sairaj Kodilkar <sarunkod@amd.com>,
iommu@lists.linux.dev, linux-kernel@vger.kernel.org,
joro@8bytes.org, suravee.suthikulpanit@amd.com,
robin.murphy@arm.com, ashish.kalra@amd.com, will@kernel.org
Subject: Re: [PATCH v2 1/2] amd/iommu: Preserve domain ids inside the kdump kernel
Date: Wed, 26 Nov 2025 11:20:40 -0400 [thread overview]
Message-ID: <20251126152040.GH520526@nvidia.com> (raw)
In-Reply-To: <b15c4495-3765-4af4-8cf1-38c64e8fa69e@amd.com>
On Wed, Nov 26, 2025 at 01:51:27PM +0530, Vasant Hegde wrote:
> It looks like on non-SNP system in kdump path, if it fails to reserve old DTE
> table, it tries to allocate new one! Looking into code again, it may be OK to
> fail in that path as well.. so that we will have common flow.
If it allocates a new (empty) one and does a full flush of the iommu
that would be OK?
Jason
next prev parent reply other threads:[~2025-11-26 15:20 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-21 9:11 [PATCH v2 0/2] amd/iommu: Preserve domain ids inside the kdump kernel Sairaj Kodilkar
2025-11-21 9:11 ` [PATCH v2 1/2] " Sairaj Kodilkar
2025-11-24 14:44 ` Jason Gunthorpe
2025-11-25 6:32 ` Sairaj Kodilkar
2025-11-26 8:21 ` Vasant Hegde
2025-11-26 15:20 ` Jason Gunthorpe [this message]
2025-12-02 5:21 ` Vasant Hegde
2025-11-21 9:11 ` [PATCH v2 2/2] amd/iommu: Make protection domain ID functions non-static Sairaj Kodilkar
2025-12-02 5:23 ` [PATCH v2 0/2] amd/iommu: Preserve domain ids inside the kdump kernel Vasant Hegde
2025-12-19 10:29 ` Joerg Roedel
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