diff options
| author | Lu Baolu <baolu.lu@linux.intel.com> | 2024-07-02 16:08:36 +0300 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2024-07-03 18:39:26 +0300 |
| commit | 804f98e224e41c16e3b70f97790f84894745a392 (patch) | |
| tree | 51fdaaaebb6fb1414c44f4a936ffa19d1be5fe0d /drivers/iommu/intel/irq_remapping.c | |
| parent | e995fcde6070f0981e083c1e2e17e401e6c17ad9 (diff) | |
| download | linux-804f98e224e41c16e3b70f97790f84894745a392.tar.xz | |
iommu/vt-d: Downgrade warning for pre-enabled IR
Emitting a warning is overkill in intel_setup_irq_remapping() since the
interrupt remapping is pre-enabled. For example, there's no guarantee
that kexec will explicitly disable interrupt remapping before booting a
new kernel. As a result, users are seeing warning messages like below
when they kexec boot a kernel, though there is nothing wrong:
DMAR-IR: IRQ remapping was enabled on dmar18 but we are not in kdump mode
DMAR-IR: IRQ remapping was enabled on dmar17 but we are not in kdump mode
DMAR-IR: IRQ remapping was enabled on dmar16 but we are not in kdump mode
... ...
Downgrade the severity of this message to avoid user confusion.
CC: Paul Menzel <pmenzel@molgen.mpg.de>
Link: https://lore.kernel.org/linux-iommu/5517f76a-94ad-452c-bae6-34ecc0ec4831@molgen.mpg.de/
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/20240625043912.258036-1-baolu.lu@linux.intel.com
Link: https://lore.kernel.org/r/20240702130839.108139-5-baolu.lu@linux.intel.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'drivers/iommu/intel/irq_remapping.c')
| -rw-r--r-- | drivers/iommu/intel/irq_remapping.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/iommu/intel/irq_remapping.c b/drivers/iommu/intel/irq_remapping.c index e4a70886678c..e090ca07364b 100644 --- a/drivers/iommu/intel/irq_remapping.c +++ b/drivers/iommu/intel/irq_remapping.c @@ -597,8 +597,8 @@ static int intel_setup_irq_remapping(struct intel_iommu *iommu) if (ir_pre_enabled(iommu)) { if (!is_kdump_kernel()) { - pr_warn("IRQ remapping was enabled on %s but we are not in kdump mode\n", - iommu->name); + pr_info_once("IRQ remapping was enabled on %s but we are not in kdump mode\n", + iommu->name); clear_ir_pre_enabled(iommu); iommu_disable_irq_remapping(iommu); } else if (iommu_load_old_irte(iommu)) |