[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH] AMD IOMMU: add locking missing from c/s 26198:ba90ecb0231f
An oversight of mine; I'm sorry. Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx> --- a/xen/drivers/passthrough/amd/iommu_init.c +++ b/xen/drivers/passthrough/amd/iommu_init.c @@ -795,6 +795,7 @@ static bool_t __init set_iommu_interrupt static void enable_iommu(struct amd_iommu *iommu) { unsigned long flags; + struct irq_desc *desc; spin_lock_irqsave(&iommu->lock, flags); @@ -812,7 +813,11 @@ static void enable_iommu(struct amd_iomm if ( iommu_has_feature(iommu, IOMMU_EXT_FEATURE_PPRSUP_SHIFT) ) register_iommu_ppr_log_in_mmio_space(iommu); - set_msi_affinity(irq_to_desc(iommu->msi.irq), &cpu_online_map); + desc = irq_to_desc(iommu->msi.irq); + spin_lock(&desc->lock); + set_msi_affinity(desc, &cpu_online_map); + spin_unlock(&desc->lock); + amd_iommu_msi_enable(iommu, IOMMU_CONTROL_ENABLED); set_iommu_ht_flags(iommu); Attachment:
AMD-IOMMU-MSI-fix.patch _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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