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iommu/vt-d, trivial: check suitable flag in function detect_intel_iommu()

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Flag irq_remapping_enabled is only set by intel_enable_irq_remapping(),
which is called after detect_intel_iommu(). So moving pr_info() from
detect_intel_iommu() to intel_enable_irq_remapping(), which also
slightly simplifies implementation.

Reviewed-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Signed-off-by: Joerg Roedel <joro@8bytes.org>
This commit is contained in:
Jiang Liu 2014-01-06 14:18:14 +08:00 committed by Joerg Roedel
parent 9544c003e8
commit b977e73a83
2 changed files with 2 additions and 8 deletions
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8
drivers/iommu/dmar.c
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@ -556,14 +556,6 @@ int __init detect_intel_iommu(void)
if (ret)
ret = check_zero_address();
{
struct acpi_table_dmar *dmar;
dmar = (struct acpi_table_dmar *) dmar_tbl;
if (ret && irq_remapping_enabled && cpu_has_x2apic &&
dmar->flags & 0x1)
pr_info("Queued invalidation will be enabled to support x2apic and Intr-remapping.\n");
if (ret && !no_iommu && !iommu_detected && !dmar_disabled) {
iommu_detected = 1;
/* Make sure ACS will be enabled */

2
drivers/iommu/intel_irq_remapping.c
View File

@ -561,6 +561,8 @@ static int __init intel_enable_irq_remapping(void)
}
if (x2apic_present) {
pr_info("Queued invalidation will be enabled to support x2apic and Intr-remapping.\n");
eim = !dmar_x2apic_optout();
if (!eim)
printk(KERN_WARNING