From: Joerg Roedel <jroe...@suse.de> Don't even try to initialize the AMD IOMMU hardware when amd_iommu=off has been passed on the kernel command line.
References: https://bugzilla.kernel.org/show_bug.cgi?id=212133 References: https://bugzilla.suse.com/show_bug.cgi?id=1183132 Cc: sta...@vger.kernel.org # v5.11 Signed-off-by: Joerg Roedel <jroe...@suse.de> --- drivers/iommu/amd/init.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c index 3280e6f5b720..61dae1800b7f 100644 --- a/drivers/iommu/amd/init.c +++ b/drivers/iommu/amd/init.c @@ -2919,12 +2919,12 @@ static int __init state_next(void) } break; case IOMMU_IVRS_DETECTED: - ret = early_amd_iommu_init(); - init_state = ret ? IOMMU_INIT_ERROR : IOMMU_ACPI_FINISHED; - if (init_state == IOMMU_ACPI_FINISHED && amd_iommu_disabled) { - pr_info("AMD IOMMU disabled\n"); + if (amd_iommu_disabled) { init_state = IOMMU_CMDLINE_DISABLED; ret = -EINVAL; + } else { + ret = early_amd_iommu_init(); + init_state = ret ? IOMMU_INIT_ERROR : IOMMU_ACPI_FINISHED; } break; case IOMMU_ACPI_FINISHED: -- 2.30.2 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
