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| author | Suresh Siddha <suresh.b.siddha@intel.com> | 2008-07-10 11:16:36 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-12 08:44:47 +0200 |
| commit | c42d9f32443397aed2d37d37df161392e6a5862f (patch) | |
| tree | 564126849bb2e31d2cfb719c3b03457a597733d2 /drivers/pci/dmar.c | |
| parent | e61d98d8dad0048619bb138b0ff996422ffae53b (diff) | |
| download | lwn-c42d9f32443397aed2d37d37df161392e6a5862f.tar.gz lwn-c42d9f32443397aed2d37d37df161392e6a5862f.zip | |
x64, x2apic/intr-remap: fix the need for sequential array allocation of iommus
Clean up the intel-iommu code related to deferred iommu flush logic. There is
no need to allocate all the iommu's as a sequential array.
This will be used later in the interrupt-remapping patch series to
allocate iommu much early and individually for each device remapping
hardware unit.
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: akpm@linux-foundation.org
Cc: arjan@linux.intel.com
Cc: andi@firstfloor.org
Cc: ebiederm@xmission.com
Cc: jbarnes@virtuousgeek.org
Cc: steiner@sgi.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/pci/dmar.c')
| -rw-r--r-- | drivers/pci/dmar.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/pci/dmar.c b/drivers/pci/dmar.c index c00e387f5b75..1a59423a8eda 100644 --- a/drivers/pci/dmar.c +++ b/drivers/pci/dmar.c @@ -377,11 +377,18 @@ int __init early_dmar_detect(void) return (ACPI_SUCCESS(status) ? 1 : 0); } -struct intel_iommu *alloc_iommu(struct intel_iommu *iommu, - struct dmar_drhd_unit *drhd) +struct intel_iommu *alloc_iommu(struct dmar_drhd_unit *drhd) { + struct intel_iommu *iommu; int map_size; u32 ver; + static int iommu_allocated = 0; + + iommu = kzalloc(sizeof(*iommu), GFP_KERNEL); + if (!iommu) + return NULL; + + iommu->seq_id = iommu_allocated++; iommu->reg = ioremap(drhd->reg_base_addr, PAGE_SIZE_4K); if (!iommu->reg) { |