[PATCH 08/10] iommu/amd: drop the lock while allocating new irq remap table

The irq_remap_table is allocated while the iommu_table_lock is held with interrupts disabled. >From looking at the call sites, all callers are in the early device initialisation (apic_bsp_setup(), pci_enable_device(), pci_enable_msi()) so make sense to drop the lock which also enables interrupts an

Re: [PATCH 08/10] iommu/amd: drop the lock while allocating new irq remap table

On Fri, Feb 23, 2018 at 11:27:34PM +0100, Sebastian Andrzej Siewior wrote: > The irq_remap_table is allocated while the iommu_table_lock is held with > interrupts disabled. While this works it makes RT scream very loudly. > >From looking at the call sites, all callers are in the early device > init

[PATCH 08/10] iommu/amd: drop the lock while allocating new irq remap table

The irq_remap_table is allocated while the iommu_table_lock is held with interrupts disabled. While this works it makes RT scream very loudly. >From looking at the call sites, all callers are in the early device initialisation (apic_bsp_setup(), pci_enable_device(), pci_enable_msi()) so make sense