From bf27ef8a77d8da38c9f35f8f6aab013a2dcf175f Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Sat, 24 Oct 2020 22:35:33 +0100 Subject: iommu/hyper-v: Disable IRQ pseudo-remapping if 15 bit APIC IDs are available If the 15-bit APIC ID support is present in emulated MSI then there's no need for the pseudo-remapping support. Signed-off-by: David Woodhouse Signed-off-by: Thomas Gleixner Link: https://lore.kernel.org/r/20201024213535.443185-34-dwmw2@infradead.org --- drivers/iommu/hyperv-iommu.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/iommu/hyperv-iommu.c') diff --git a/drivers/iommu/hyperv-iommu.c b/drivers/iommu/hyperv-iommu.c index a629a6be65c7..9438daa24fdb 100644 --- a/drivers/iommu/hyperv-iommu.c +++ b/drivers/iommu/hyperv-iommu.c @@ -121,6 +121,7 @@ static int __init hyperv_prepare_irq_remapping(void) int i; if (!hypervisor_is_type(X86_HYPER_MS_HYPERV) || + x86_init.hyper.msi_ext_dest_id() || !x2apic_supported()) return -ENODEV; -- cgit v1.2.3