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| author | Alexander Monakov <amonakov@ispras.ru> | 2021-05-04 13:22:20 +0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2021-06-04 16:30:09 +0200 |
| commit | 4b21a503adf597773e4b37db05db0e9b16a81d53 (patch) | |
| tree | ef231b6a105c0e563bc509a1c21e81627862c9d6 /drivers/iommu/amd/init.c | |
| parent | 8124c8a6b35386f73523d27eacb71b5364a68c4c (diff) | |
| download | lwn-4b21a503adf597773e4b37db05db0e9b16a81d53.tar.gz lwn-4b21a503adf597773e4b37db05db0e9b16a81d53.zip | |
iommu/amd: Fix extended features logging
print_iommu_info prints the EFR register and then the decoded list of
features on a separate line:
pci 0000:00:00.2: AMD-Vi: Extended features (0x206d73ef22254ade):
PPR X2APIC NX GT IA GA PC GA_vAPIC
The second line is emitted via 'pr_cont', which causes it to have a
different ('warn') loglevel compared to the previous line ('info').
Commit 9a295ff0ffc9 attempted to rectify this by removing the newline
from the pci_info format string, but this doesn't work, as pci_info
calls implicitly append a newline anyway.
Printing the decoded features on the same line would make it quite long.
Instead, change pci_info() to pr_info() to omit PCI bus location info,
which is also shown in the preceding message. This results in:
pci 0000:00:00.2: AMD-Vi: Found IOMMU cap 0x40
AMD-Vi: Extended features (0x206d73ef22254ade): PPR X2APIC NX GT IA GA PC GA_vAPIC
AMD-Vi: Interrupt remapping enabled
Fixes: 9a295ff0ffc9 ("iommu/amd: Print extended features in one line to fix divergent log levels")
Link: https://lore.kernel.org/lkml/alpine.LNX.2.20.13.2104112326460.11104@monopod.intra.ispras.ru
Signed-off-by: Alexander Monakov <amonakov@ispras.ru>
Cc: Paul Menzel <pmenzel@molgen.mpg.de>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Cc: iommu@lists.linux-foundation.org
Reviewed-by: Paul Menzel <pmenzel@molgen.mpg.de>
Link: https://lore.kernel.org/r/20210504102220.1793-1-amonakov@ispras.ru
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/amd/init.c')
| -rw-r--r-- | drivers/iommu/amd/init.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c index d006724f4dc2..1ded8a69c246 100644 --- a/drivers/iommu/amd/init.c +++ b/drivers/iommu/amd/init.c @@ -1908,8 +1908,8 @@ static void print_iommu_info(void) pci_info(pdev, "Found IOMMU cap 0x%x\n", iommu->cap_ptr); if (iommu->cap & (1 << IOMMU_CAP_EFR)) { - pci_info(pdev, "Extended features (%#llx):", - iommu->features); + pr_info("Extended features (%#llx):", iommu->features); + for (i = 0; i < ARRAY_SIZE(feat_str); ++i) { if (iommu_feature(iommu, (1ULL << i))) pr_cont(" %s", feat_str[i]); |