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Subject[PATCH 13/21] AMD IOMMU: add domain cleanup helper function
Date
Impact: add a function to remove all devices from a domain

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
---
arch/x86/kernel/amd_iommu.c | 14 ++++++++++++++
1 files changed, 14 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index 47158e3..26b929b 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -1510,3 +1510,17 @@ static void detach_device(struct protection_domain *domain, u16 devid)
__detach_device(domain, devid);
write_unlock_irqrestore(&amd_iommu_devtable_lock, flags);
}
+
+static void cleanup_domain(struct protection_domain *domain)
+{
+ unsigned long flags;
+ u16 devid;
+
+ write_lock_irqsave(&amd_iommu_devtable_lock, flags);
+
+ for (devid = 0; devid <= amd_iommu_last_bdf; ++devid)
+ if (amd_iommu_pd_table[devid] == domain)
+ __detach_device(domain, devid);
+
+ write_unlock_irqrestore(&amd_iommu_devtable_lock, flags);
+}
--
1.5.6.4



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