From: David Woodhouse <dwmw@amazon.co.uk> stable inclusion from stable-v5.11-rc1 commit bf27ef8a77d8da38c9f35f8f6aab013a2dcf175f category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IC9GHN Reference: https://github.com/torvalds/linux/commit/bf27ef8a77d8da38c9f35f8f6aab013a2dc... -------------------------------- 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 <dwmw@amazon.co.uk> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/20201024213535.443185-34-dwmw2@infradead.org Signed-off-by: Liu Chao <liuchao173@huawei.com> --- drivers/iommu/hyperv-iommu.c | 1 + 1 file changed, 1 insertion(+) 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; -- 2.33.0