From: Robin Murphy <robin.murphy@arm.com>
To: joro@8bytes.org, will@kernel.org
Cc: linux-kernel@vger.kernel.org, dianders@chromium.org,
iommu@lists.linux-foundation.org, rajatja@google.com,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v3 02/25] iommu/amd: Drop IOVA cookie management
Date: Thu, 5 Aug 2021 10:37:58 +0100 [thread overview]
Message-ID: <44f5c699-1177-7f1d-479e-59a8a42efab6@arm.com> (raw)
In-Reply-To: <ebc82f082d5fde58557efbec66f34b1be6a12599.1628094600.git.robin.murphy@arm.com>
On 2021-08-04 18:15, Robin Murphy wrote:
> The core code bakes its own cookies now.
>
> Signed-off-by: Robin Murphy <robin.murphy@arm.com>
>
> ---
>
> v3: Also remove unneeded include
> ---
> drivers/iommu/amd/iommu.c | 13 -------------
> 1 file changed, 13 deletions(-)
>
> diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c
> index 52fe2326042a..92f7cbe3d14a 100644
> --- a/drivers/iommu/amd/iommu.c
> +++ b/drivers/iommu/amd/iommu.c
> @@ -20,7 +20,6 @@
> #include <linux/scatterlist.h>
> #include <linux/dma-map-ops.h>
> #include <linux/dma-direct.h>
> -#include <linux/dma-iommu.h>
Oh dear, how embarrassing... I went through all the drivers making that
decision based on iommu_dma* references but totally forgot about
iommu_setup_dma_ops() here. And then of course fell into the trap of
"such a minor change I don't need to re-rest it" hubris... sigh, roll
back to v2 for this one.
Apologies,
Robin.
> #include <linux/iommu-helper.h>
> #include <linux/delay.h>
> #include <linux/amd-iommu.h>
> @@ -1918,16 +1917,7 @@ static struct iommu_domain *amd_iommu_domain_alloc(unsigned type)
> domain->domain.geometry.aperture_end = ~0ULL;
> domain->domain.geometry.force_aperture = true;
>
> - if (type == IOMMU_DOMAIN_DMA &&
> - iommu_get_dma_cookie(&domain->domain) == -ENOMEM)
> - goto free_domain;
> -
> return &domain->domain;
> -
> -free_domain:
> - protection_domain_free(domain);
> -
> - return NULL;
> }
>
> static void amd_iommu_domain_free(struct iommu_domain *dom)
> @@ -1944,9 +1934,6 @@ static void amd_iommu_domain_free(struct iommu_domain *dom)
> if (!dom)
> return;
>
> - if (dom->type == IOMMU_DOMAIN_DMA)
> - iommu_put_dma_cookie(&domain->domain);
> -
> if (domain->flags & PD_IOMMUV2_MASK)
> free_gcr3_table(domain);
>
>
next prev parent reply other threads:[~2021-08-05 9:38 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-04 17:15 [PATCH v3 00/25] iommu: Refactor DMA domain strictness Robin Murphy
2021-08-04 17:15 ` [PATCH v3 01/25] iommu: Pull IOVA cookie management into the core Robin Murphy
2021-08-04 18:52 ` Heiko Stübner
2021-08-05 7:18 ` Marek Szyprowski
2021-08-05 9:15 ` Yoshihiro Shimoda
2021-08-04 17:15 ` [PATCH v3 02/25] iommu/amd: Drop IOVA cookie management Robin Murphy
2021-08-05 7:37 ` kernel test robot
2021-08-05 9:37 ` Robin Murphy [this message]
2021-08-04 17:15 ` [PATCH v3 03/25] iommu/arm-smmu: " Robin Murphy
2021-08-04 17:15 ` [PATCH v3 04/25] iommu/vt-d: " Robin Murphy
2021-08-04 17:15 ` [PATCH v3 05/25] iommu/exynos: " Robin Murphy
2021-08-05 7:19 ` Marek Szyprowski
2021-08-04 17:15 ` [PATCH v3 06/25] iommu/ipmmu-vmsa: " Robin Murphy
2021-08-05 9:15 ` Yoshihiro Shimoda
2021-08-04 17:15 ` [PATCH v3 07/25] iommu/mtk: " Robin Murphy
2021-08-04 17:15 ` [PATCH v3 08/25] iommu/rockchip: " Robin Murphy
2021-08-04 18:53 ` Heiko Stübner
2021-08-04 17:15 ` [PATCH v3 09/25] iommu/sprd: " Robin Murphy
2021-08-06 2:15 ` Chunyan Zhang
2021-08-04 17:15 ` [PATCH v3 10/25] iommu/sun50i: " Robin Murphy
2021-08-04 17:15 ` [PATCH v3 11/25] iommu/virtio: " Robin Murphy
2021-08-04 17:15 ` [PATCH v3 12/25] iommu/dma: Unexport " Robin Murphy
2021-08-04 17:15 ` [PATCH v3 13/25] iommu/dma: Remove redundant "!dev" checks Robin Murphy
2021-08-04 17:15 ` [PATCH v3 14/25] iommu: Indicate queued flushes via gather data Robin Murphy
2021-08-04 17:15 ` [PATCH v3 15/25] iommu/io-pgtable: Remove non-strict quirk Robin Murphy
2021-08-04 17:15 ` [PATCH v3 16/25] iommu: Introduce explicit type for non-strict DMA domains Robin Murphy
2021-08-04 17:15 ` [PATCH v3 17/25] iommu/amd: Prepare for multiple DMA domain types Robin Murphy
2021-08-04 17:15 ` [PATCH v3 18/25] iommu/arm-smmu: " Robin Murphy
2021-08-04 17:15 ` [PATCH v3 19/25] iommu/vt-d: " Robin Murphy
2021-08-04 17:15 ` [PATCH v3 20/25] iommu: Express DMA strictness via the domain type Robin Murphy
2021-08-04 17:15 ` [PATCH v3 21/25] iommu: Expose DMA domain strictness via sysfs Robin Murphy
2021-08-04 17:15 ` [PATCH v3 22/25] iommu: Only log strictness for DMA domains Robin Murphy
2021-08-04 17:15 ` [PATCH v3 23/25] iommu: Merge strictness and domain type configs Robin Murphy
2021-08-06 9:15 ` John Garry
2021-08-04 17:15 ` [PATCH v3 24/25] iommu/dma: Factor out flush queue init Robin Murphy
2021-08-09 12:52 ` Will Deacon
2021-08-09 14:47 ` Robin Murphy
2021-08-09 19:05 ` Rajat Jain
2021-08-09 19:59 ` Robin Murphy
2021-08-09 20:15 ` Rajat Jain
2021-08-04 17:15 ` [PATCH v3 25/25] iommu: Allow enabling non-strict mode dynamically Robin Murphy
2021-08-09 12:49 ` Will Deacon
2021-08-09 13:40 ` Robin Murphy
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