xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

x86/irq: Add allocation type for parent domain retrieval

Browse Source 
irq_remapping_ir_irq_domain() is used to retrieve the remapping parent
domain for an allocation type. irq_remapping_irq_domain() is for retrieving
the actual device domain for allocating interrupts for a device.

The two functions are similar and can be unified by using explicit modes
for parent irq domain retrieval.

Add X86_IRQ_ALLOC_TYPE_IOAPIC/HPET_GET_PARENT and use it in the iommu
implementations. Drop the parent domain retrieval for PCI_MSI/X as that is
unused.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Joerg Roedel <jroedel@suse.de>
Link: https://lore.kernel.org/r/20200826112331.436350257@linutronix.de
This commit is contained in:
Thomas Gleixner
2020-08-26 13:16:36 +02:00
parent 801b5e4c4e
commit b4c364da32
6 changed files with 15 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/x86/kernel/apic/io_apic.c
View File

@@ -2296,7 +2296,7 @@ static int mp_irqdomain_create(int ioapic)
return 0;
init_irq_alloc_info(&info, NULL);
info.type = X86_IRQ_ALLOC_TYPE_IOAPIC;
info.type = X86_IRQ_ALLOC_TYPE_IOAPIC_GET_PARENT;
info.ioapic_id = mpc_ioapic_id(ioapic);
parent = irq_remapping_get_ir_irq_domain(&info);
if (!parent)