From: Nicolin Chen <nicolinc@nvidia.com>
To: Pranjal Shrivastava <praan@google.com>
Cc: Joerg Roedel <joro@8bytes.org>, Will Deacon <will@kernel.org>,
"Robin Murphy" <robin.murphy@arm.com>,
Jason Gunthorpe <jgg@ziepe.ca>,
Mostafa Saleh <smostafa@google.com>,
Daniel Mentz <danielmentz@google.com>, <iommu@lists.linux.dev>
Subject: Re: [RFC PATCH v2 02/10] iommu/arm-smmu-v3: Add a helper to drain all queues
Date: Fri, 2 May 2025 12:32:35 -0700 [thread overview]
Message-ID: <aBUd0/NmzFmeOosd@Asurada-Nvidia> (raw)
In-Reply-To: <20250418233409.3926715-3-praan@google.com>
On Fri, Apr 18, 2025 at 11:34:01PM +0000, Pranjal Shrivastava wrote:
> +static int arm_smmu_queue_poll_until_empty(struct arm_smmu_device *smmu,
> + struct arm_smmu_queue *q)
> +{
> + struct arm_smmu_queue_poll qp;
> + struct arm_smmu_ll_queue *llq = &q->llq;
> + int ret = 0;
> +
> + queue_poll_init(smmu, &qp);
> + llq->val = READ_ONCE(q->llq.val);
llq points to q->llq, but here it overwrites the value from itself?
Nicolin
next prev parent reply other threads:[~2025-05-02 19:32 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-04-18 23:33 [RFC PATCH v2 00/10] iommu/arm-smmu-v3: Implement Runtime/System Sleep ops Pranjal Shrivastava
2025-04-18 23:34 ` [RFC PATCH v2 01/10] iommu/arm-smmu-v3: Refactor arm_smmu_setup_irqs Pranjal Shrivastava
2025-05-02 19:14 ` Nicolin Chen
2025-04-18 23:34 ` [RFC PATCH v2 02/10] iommu/arm-smmu-v3: Add a helper to drain all queues Pranjal Shrivastava
2025-05-02 19:32 ` Nicolin Chen [this message]
2025-05-05 15:14 ` Pranjal Shrivastava
2025-05-04 20:28 ` Daniel Mentz
2025-05-05 15:10 ` Pranjal Shrivastava
2025-04-18 23:34 ` [RFC PATCH v2 03/10] iommu/tegra241-cmdqv: Add a helper to drain VCMDQs Pranjal Shrivastava
2025-04-23 6:34 ` Nicolin Chen
2025-04-18 23:34 ` [RFC PATCH v2 04/10] iommu/arm-smmu-v3: Cache and restore MSI config Pranjal Shrivastava
2025-05-02 19:43 ` Nicolin Chen
2025-05-05 15:16 ` Pranjal Shrivastava
2025-04-18 23:34 ` [RFC PATCH v2 05/10] iommu/arm-smmu-v3: Implement pm_runtime & system sleep ops Pranjal Shrivastava
2025-05-04 20:29 ` Daniel Mentz
2025-05-05 15:22 ` Pranjal Shrivastava
2025-04-18 23:34 ` [RFC PATCH v2 06/10] iommu: Add a helper to check for user ownership Pranjal Shrivastava
2025-04-18 23:34 ` [RFC PATCH v2 07/10] iommu/arm-smmu-v3: Track masters with user-owned groups Pranjal Shrivastava
2025-04-18 23:34 ` [RFC PATCH v2 08/10] iommu/arm-smmu-v3: Avoid suspend when user owns DMA Pranjal Shrivastava
2025-05-04 20:28 ` Daniel Mentz
2025-05-05 15:22 ` Pranjal Shrivastava
2025-04-18 23:34 ` [RFC PATCH v2 09/10] iommu/arm-smmu-v3: Enable pm_runtime and setup devlinks Pranjal Shrivastava
2025-04-18 23:34 ` [RFC PATCH v2 10/10] iommu/arm-smmu-v3: Invoke pm_runtime before hw access Pranjal Shrivastava
2025-05-04 20:29 ` Daniel Mentz
2025-05-05 16:10 ` Pranjal Shrivastava
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