From 12243a8115f8583a6bcada7717c01fb164e23c89 Mon Sep 17 00:00:00 2001 From: Dimitri Sivanich Date: Thu, 30 May 2024 13:36:03 -0500 Subject: [PATCH] iommu/amd: Fix panic accessing amd_iommu_enable_faulting This fixes a bug introduced by commit d74169ceb0d2 ("iommu/vt-d: Allocate DMAR fault interrupts locally"). The panic happens when amd_iommu_enable_faulting is called from CPUHP_AP_ONLINE_DYN context. Fixes: d74169ceb0d2 ("iommu/vt-d: Allocate DMAR fault interrupts locally") Signed-off-by: Dimitri Sivanich Tested-by: Yi Zhang Reviewed-by: Jerry Snitselaar Reviewed-by: Vasant Hegde Link: https://lore.kernel.org/r/ZljHE/R4KLzGU6vx@hpe.com Signed-off-by: Joerg Roedel --- drivers/iommu/amd/init.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c index 27e293727095..161248067776 100644 --- a/drivers/iommu/amd/init.c +++ b/drivers/iommu/amd/init.c @@ -3362,7 +3362,7 @@ int amd_iommu_reenable(int mode) return 0; } -int __init amd_iommu_enable_faulting(unsigned int cpu) +int amd_iommu_enable_faulting(unsigned int cpu) { /* We enable MSI later when PCI is initialized */ return 0; -- 2.50.1