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| author | Paul Menzel <pmenzel@molgen.mpg.de> | 2020-06-17 00:04:20 +0200 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2020-06-30 11:52:18 +0200 |
| commit | 9a295ff0ffc94e1be60d604fee0cce4fbb3b8964 (patch) | |
| tree | a26970f0b5f8b5cc5432bb293d5a83657269fea6 /drivers/iommu | |
| parent | Linux 5.8-rc3 (diff) | |
| download | linux-9a295ff0ffc94e1be60d604fee0cce4fbb3b8964.tar.xz linux-9a295ff0ffc94e1be60d604fee0cce4fbb3b8964.zip | |
iommu/amd: Print extended features in one line to fix divergent log levels
Currently, Linux logs the two messages below.
[ 0.979142] pci 0000:00:00.2: AMD-Vi: Extended features (0xf77ef22294ada):
[ 0.979546] PPR NX GT IA GA PC GA_vAPIC
The log level of these lines differs though. The first one has level
*info*, while the second has level *warn*, which is confusing.
$ dmesg -T --level=info | grep "Extended features"
[Tue Jun 16 21:46:58 2020] pci 0000:00:00.2: AMD-Vi: Extended features (0xf77ef22294ada):
$ dmesg -T --level=warn | grep "PPR"
[Tue Jun 16 21:46:58 2020] PPR NX GT IA GA PC GA_vAPIC
The problem is, that commit 3928aa3f57 ("iommu/amd: Detect and enable
guest vAPIC support") introduced a newline, causing `pr_cont()`, used to
print the features, to default back to the default log level.
/**
* pr_cont - Continues a previous log message in the same line.
* @fmt: format string
* @...: arguments for the format string
*
* This macro expands to a printk with KERN_CONT loglevel. It should only be
* used when continuing a log message with no newline ('\n') enclosed. Otherwise
* it defaults back to KERN_DEFAULT loglevel.
*/
#define pr_cont(fmt, ...) \
printk(KERN_CONT fmt, ##__VA_ARGS__)
So, remove the line break, so only one line is logged.
Fixes: 3928aa3f57 ("iommu/amd: Detect and enable guest vAPIC support")
Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de>
Reviewed-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Cc: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Cc: iommu@lists.linux-foundation.org
Link: https://lore.kernel.org/r/20200616220420.19466-1-pmenzel@molgen.mpg.de
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/amd/init.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c index 6ebd4825e320..232683ea10e0 100644 --- a/drivers/iommu/amd/init.c +++ b/drivers/iommu/amd/init.c @@ -1842,7 +1842,7 @@ static void print_iommu_info(void) pci_info(pdev, "Found IOMMU cap 0x%hx\n", iommu->cap_ptr); if (iommu->cap & (1 << IOMMU_CAP_EFR)) { - pci_info(pdev, "Extended features (%#llx):\n", + pci_info(pdev, "Extended features (%#llx):", iommu->features); for (i = 0; i < ARRAY_SIZE(feat_str); ++i) { if (iommu_feature(iommu, (1ULL << i))) |