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iommu/amd: Fix panic accessing amd_iommu_enable_faulting

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This fixes a bug introduced by commit d74169ceb0 ("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: d74169ceb0 ("iommu/vt-d: Allocate DMAR fault interrupts locally")
Signed-off-by: Dimitri Sivanich <sivanich@hpe.com>
Tested-by: Yi Zhang <yi.zhang@redhat.com>
Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Reviewed-by: Vasant Hegde <vasant.hegde@amd.com>
Link: https://lore.kernel.org/r/ZljHE/R4KLzGU6vx@hpe.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Dimitri Sivanich 2024-05-30 13:36:03 -05:00 committed by Joerg Roedel
parent 83a7eefedc
commit 12243a8115
1 changed files with 1 additions and 1 deletions
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2
drivers/iommu/amd/init.c
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@ -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;