mirrors/linux
2
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-05-07 10:24:01 -04:00
Code Issues Packages Projects Releases Wiki Activity

iommu/vt-d: Wrap the dirty tracking loop to be a helper

Browse Source 
Add device_set_dirty_tracking() to loop all the devices and set the dirty
tracking per the @enable parameter.

Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Joao Martins <joao.m.martins@oracle.com>
Link: https://lore.kernel.org/r/20240208082307.15759-8-yi.l.liu@intel.com
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Yi Liu
2024-02-19 19:15:58 +08:00
committed by Joerg Roedel
parent 56ecaf6c58
commit 0c7f2497b3
1 changed files with 24 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

35
drivers/iommu/intel/iommu.c
View File

@@ -4729,23 +4729,38 @@ static void *intel_iommu_hw_info(struct device *dev, u32 *length, u32 *type)
return vtd;
}
/*
* Set dirty tracking for the device list of a domain. The caller must
* hold the domain->lock when calling it.
*/
static int device_set_dirty_tracking(struct list_head *devices, bool enable)
{
struct device_domain_info *info;
int ret = 0;
list_for_each_entry(info, devices, link) {
ret = intel_pasid_setup_dirty_tracking(info->iommu, info->dev,
IOMMU_NO_PASID, enable);
if (ret)
break;
}
return ret;
}
static int intel_iommu_set_dirty_tracking(struct iommu_domain *domain,
bool enable)
{
struct dmar_domain *dmar_domain = to_dmar_domain(domain);
struct device_domain_info *info;
int ret;
spin_lock(&dmar_domain->lock);
if (dmar_domain->dirty_tracking == enable)
goto out_unlock;
list_for_each_entry(info, &dmar_domain->devices, link) {
ret = intel_pasid_setup_dirty_tracking(info->iommu, info->dev,
IOMMU_NO_PASID, enable);
if (ret)
goto err_unwind;
}
ret = device_set_dirty_tracking(&dmar_domain->devices, enable);
if (ret)
goto err_unwind;
dmar_domain->dirty_tracking = enable;
out_unlock:
@@ -4754,10 +4769,8 @@ static int intel_iommu_set_dirty_tracking(struct iommu_domain *domain,
return 0;
err_unwind:
list_for_each_entry(info, &dmar_domain->devices, link)
intel_pasid_setup_dirty_tracking(info->iommu, info->dev,
IOMMU_NO_PASID,
dmar_domain->dirty_tracking);
device_set_dirty_tracking(&dmar_domain->devices,
dmar_domain->dirty_tracking);
spin_unlock(&dmar_domain->lock);
return ret;
}