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x64, x2apic/intr-remap: fix the need for sequential array allocation of iommus

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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>
This commit is contained in:
Suresh Siddha
2008-07-10 11:16:36 -07:00
committed by Ingo Molnar
parent e61d98d8da
commit c42d9f3244
3 changed files with 18 additions and 21 deletions
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11
drivers/pci/dmar.c
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@ -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) {