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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?L3MsQq6L+fyitP9gYRsbABpJkJCRFlccpOMCfc6OZwFIQEbuzxo7lJy6kcEO?= =?us-ascii?Q?RsoRZjpWAxglD/PQZCpXs+H9IqNouxgE+wS71KuTTIv3u4+UKE7xGphhGEZq?= =?us-ascii?Q?eOGwmLqEfjuoNjEZWaJyn5OvkHe/gPnqyW6n2FHHedapRt1M4Jio7BTYET5m?= =?us-ascii?Q?APKfwspwOi1eJDibVe/5dsGwLiN58o6h54SBkrd1Up/MJOj3yOWQxrTLW7Y/?= =?us-ascii?Q?sW1fAxw2FHY5TGJ1VuiLFjQ8f+l1kEo5E64sZ2vJA2gjEiC1CgqIu1Pr7xso?= =?us-ascii?Q?60liI9eZveJaAIDc8hFTjvGc/m3tC6rbZvQgcc/CQm5JvSZGeNZfTdMOlj/2?= =?us-ascii?Q?6NM0pWUCqk/lHXzvX4aGTlulGeC1j5UUOD6vsU4LFyWkq2BJqAXWdLBGkXfV?= =?us-ascii?Q?rRBbVfJk9ethbpoSLo5PjZQBW7U/tTNi0YYSlcJa+KkMoIooMPACUBXI/KpU?= =?us-ascii?Q?zQ1+G0kWNU4HRdKjH3NK7O52yVG9sh4XdUhWtf31qK8ISw7YhWLZ/cvdlIdu?= =?us-ascii?Q?6bW6j40ZEfEn7uXjmnMN6QJ34YNEDd2oTTHqy4jJy5F51+/EahsQ4tbF8Rk8?= =?us-ascii?Q?4EjAo/Nbp1Uh3eb5wAJDDfxM7zrRQAk8qdLGPhuhOpbTYR8hFf12ARUM4ea2?= =?us-ascii?Q?V6U9LM81+Tq0/Pw3GbB7IFtFChlFe92CNXjs6mApLJvL6WNuZ3v4f17POEWb?= =?us-ascii?Q?wBB8EBeESB2s0HjGoB0cI+BqeJCjOmSeNY+lDvrMokTi1+5SdOuh4RbDuKQk?= =?us-ascii?Q?0owOwUtHFX5AuCMrkSGuy3BniBwG/HjfohQRQDkSjPghzEQW1RRtvusTSBs3?= =?us-ascii?Q?aGfNn/9d6y87TVjVcRaGnoFORlo2sMefEkJGU0W/ukFw4iPQBLHKjat55US/?= =?us-ascii?Q?1c/LHtLF5p69lekqGyleEKtPSA09LK/H0VM1g/beweuJGUPSEEZkdvYo+pBJ?= =?us-ascii?Q?YHA203FZEiCpuPdx32x8QfxteRcLzPRqRPypzuvKv2fqLPeENLJ5evt1F8sU?= =?us-ascii?Q?D/76tvkcfTy5jYTqAH+V12kvPSvPpaxsAJECrAz49uJmArOpxMPdYhbKl1CA?= =?us-ascii?Q?BYgsB5kAPOuqLaqkzTOp4+ZyAvVZYXZQZD+uKu0zNhKqLpZdQ5IqHnaHBPOd?= =?us-ascii?Q?PLSxSFJt2gpYAmb+tbpVMqddbrENNTu7OdE/R8Apk+oBBrFcZzy0ufrF7us8?= =?us-ascii?Q?c94dd/N6C0+O+vzSNS1670KktwrnlR+3eKmskltjwn+xZ3a5l2BNbR7AENwv?= =?us-ascii?Q?zwjZRnzyytYnjoC/a25omxBMPIT2EdYhrKyqGPYLL+N4ykurhQB3VIh5zyj7?= =?us-ascii?Q?VHslb75ErLjlVeIddki0pE/xK7/MsNS0Cw4evmNok/uqSfsgC/T5jt6JHd3A?= =?us-ascii?Q?frMlDoE5ArVz4g7Yc/r4X6LeOAxmuZCLj7J57pKu6UOLSQTzaqISraZrd9Nw?= =?us-ascii?Q?hFogytT/N7KWuMOYQ4oap2pdHfadoWzO6I+H1pzrRAZSwo4uhrqzQJZIj1XX?= =?us-ascii?Q?F512uzC6q5kqTILWlDxfKCNZM3h261Y8iA/vcgp4uWcPNAhQVmgK2XZYlAm5?= =?us-ascii?Q?cosn217YVtktHF1b0yvgps6RJ1H38oEkygzu14tV?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 1e5d1d95-2d1a-459a-37c8-08dbae0d8d9f X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 Sep 2023 12:42:23.9662 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: HHtx9CSQttbvKFLqRjc8Hxh93dzmeAZvhQMYRt0pKFcQmg7eZxaUVbqDRpylz4Vn X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR12MB8970 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Sep 05, 2023 at 07:49:14PM +0800, Michael Shavit wrote: > Create a new iommu_domain subclass for SVA iommu domains to hold the > data previously stored in the dynamically allocated arm_smmu_bond. Add a > simple count of attached SVA domains to arm_smmu_master to replace the > list of bonds. > > Signed-off-by: Michael Shavit > --- > > .../iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c | 70 +++++++------------ > drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 1 - > drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 2 +- > 3 files changed, 26 insertions(+), 47 deletions(-) > > diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c > index 9fb6907c5e7d4..0342c0f35d55a 100644 > --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c > +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c > @@ -24,14 +24,13 @@ struct arm_smmu_mmu_notifier { > > #define mn_to_smmu(mn) container_of(mn, struct arm_smmu_mmu_notifier, mn) > > -struct arm_smmu_bond { > - struct mm_struct *mm; > +struct arm_smmu_sva_domain { > + struct iommu_domain iommu_domain; > struct arm_smmu_mmu_notifier *smmu_mn; > - struct list_head list; > }; > > -#define sva_to_bond(handle) \ > - container_of(handle, struct arm_smmu_bond, sva) > +#define to_sva_domain(domain) \ > + container_of(domain, struct arm_smmu_sva_domain, iommu_domain) I'm not sure about this? This seems like a strange direction The SVA domain and a UNMANAGED/PAGING domain should be basically the same thing. Making a sva_domain a completely different type looks like it would stand in the way of that? > @@ -545,12 +526,11 @@ static const struct iommu_domain_ops arm_smmu_sva_domain_ops = { > > struct iommu_domain *arm_smmu_sva_domain_alloc(void) > { > - struct iommu_domain *domain; > + struct arm_smmu_sva_domain *sva_domain; > > - domain = kzalloc(sizeof(*domain), GFP_KERNEL); > - if (!domain) > + sva_domain = kzalloc(sizeof(*sva_domain), GFP_KERNEL); > + if (!sva_domain) > return NULL; > - domain->ops = &arm_smmu_sva_domain_ops; > - > - return domain; > + sva_domain->iommu_domain.ops = &arm_smmu_sva_domain_ops; arm_smmu_sva_domain_free() should container_of before freeing, but gross to assume the iommu_domain is the first member. Jason