From: Pranjal Shrivastava <praan@google.com>
To: Nicolin Chen <nicolinc@nvidia.com>
Cc: jgg@nvidia.com, will@kernel.org, joro@8bytes.org,
robin.murphy@arm.com, linux-arm-kernel@lists.infradead.org,
iommu@lists.linux.dev, linux-kernel@vger.kernel.org,
linux-tegra@vger.kernel.org
Subject: Re: [PATCH v3 2/2] iommu/arm-smmu-v3: Replace vsmmu_size/type with get_viommu_size
Date: Fri, 25 Jul 2025 17:47:19 +0000 [thread overview]
Message-ID: <aIPDJyuSVpqMV8sn@google.com> (raw)
In-Reply-To: <aIOq2ysFPfZsNUix@Asurada-Nvidia>
On Fri, Jul 25, 2025 at 09:03:39AM -0700, Nicolin Chen wrote:
> On Fri, Jul 25, 2025 at 05:11:07AM +0000, Pranjal Shrivastava wrote:
> > On Thu, Jul 24, 2025 at 02:49:28PM -0700, Nicolin Chen wrote:
> > I'm agreeing with all of it, it's just that the comment says something
> > was rejected in by the size op, which raises confusion as to why we're
> > in the init op. The init op rejecting something due to data corruption
> > is a different thing..
> >
> > I totally get the point about data corruption, i.e.:
> >
> > size op -> returned something valid
> > <data corruption>
> > init op -> rejecting corrupted type
> >
> > Wheras I was just trying to understand a case where as per the comment:
> > "Unsupported type was rejected in tegra241_cmdqv_get_vintf_size()",
> > i.e. ->size op returned 0, yet we ended up calling the init op
>
> Is the updated one in v4 fine to you?
>
> /*
> * Unsupported type should be rejected by tegra241_cmdqv_get_vintf_size.
> * Seeing one here indicates a kernel bug or some data corruption.
> */
Yes, v4 looks fine.. but I was just trying to understand if the comment
was wrong, didn't necessarily need a re-spin just for that comment :)
Thanks for accommodating it though.
>
> Nicolin
next prev parent reply other threads:[~2025-07-25 17:47 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-21 20:04 [PATCH v3 0/2] iommu/arm-smmu-v3: Two vsmmu impl_ops cleanups Nicolin Chen
2025-07-21 20:04 ` [PATCH v3 1/2] iommu/arm-smmu-v3: Do not bother impl_ops if IOMMU_VIOMMU_TYPE_ARM_SMMUV3 Nicolin Chen
2025-07-23 13:19 ` Pranjal Shrivastava
2025-07-21 20:04 ` [PATCH v3 2/2] iommu/arm-smmu-v3: Replace vsmmu_size/type with get_viommu_size Nicolin Chen
2025-07-23 13:37 ` Pranjal Shrivastava
2025-07-23 18:05 ` Nicolin Chen
2025-07-23 18:58 ` Pranjal Shrivastava
2025-07-24 20:55 ` Pranjal Shrivastava
2025-07-24 21:49 ` Nicolin Chen
2025-07-25 5:11 ` Pranjal Shrivastava
2025-07-25 16:03 ` Nicolin Chen
2025-07-25 17:47 ` Pranjal Shrivastava [this message]
2025-07-25 9:18 ` Mostafa Saleh
2025-07-25 16:24 ` Nicolin Chen
2025-07-25 18:12 ` Mostafa Saleh
2025-07-25 19:01 ` Nicolin Chen
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