Messages in this thread Patch in this message | | | From | Joerg Roedel <> | Subject | [PATCH 05/21] AMD IOMMU: add domain id free function | Date | Tue, 9 Dec 2008 15:16:02 +0100 |
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Impact: add code to release a domain id
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> --- arch/x86/kernel/amd_iommu.c | 10 ++++++++++ 1 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index 85a62e9..11de0f1 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -569,6 +569,16 @@ static u16 domain_id_alloc(void) return id; } +static void domain_id_free(int id) +{ + unsigned long flags; + + write_lock_irqsave(&amd_iommu_devtable_lock, flags); + if (id > 0 && id < MAX_DOMAIN_ID) + __clear_bit(id, amd_iommu_pd_alloc_bitmap); + write_unlock_irqrestore(&amd_iommu_devtable_lock, flags); +} + /* * Used to reserve address ranges in the aperture (e.g. for exclusion * ranges. -- 1.5.6.4
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