The same .config, BIOS, and kernel boot parameters in both kernels.
# perf top -v
┌─Error:────────────────────────────────────────┐
│Failed to mmap with 12 (Cannot allocate memory)│
mmap size 528384B
[ 0.015080] smpboot: CPU0: AMD Ryzen 5 1600X Six-Core Processor (family:
0x17, model: 0x1, stepping: 0x1)
[ 0.020092] Performance Events: Fam17h core perfctr, AMD PMU driver.
[ 0.020167] ... version: 0
[ 0.020226] ... bit width: 48
[ 0.020284] ... generic registers: 6
[ 0.020342] ... value mask: 0000ffffffffffff
[ 0.020404] ... max period: 00007fffffffffff
[ 0.020465] ... fixed-purpose events: 0
[ 0.020522] ... event mask: 000000000000003f
[ 1.307185] AMD-Vi: Found IOMMU at 0000:00:00.2 cap 0x40
[ 1.307248] AMD-Vi: Extended features (0xf77ef22294ada):
[ 1.307309] PPR NX GT IA GA PC GA_vAPIC
[ 1.307479] AMD-Vi: Lazy IO/TLB flushing enabled
[ 1.308686] amd_uncore: AMD NB counters detected
[ 1.308750] amd_uncore: AMD LLC counters detected
[ 1.309133] perf/amd_iommu: Detected AMD IOMMU #0 (2 banks, 4 counters/bank).
MemTotal: 32915748 kB
MemFree: 7423584 kB
MemAvailable: 30061500 kB
Buffers: 1300 kB
Cached: 22917432 kB
SwapCached: 0 kB
Active: 7432916 kB
Inactive: 17190244 kB
Active(anon): 1706056 kB
Inactive(anon): 266040 kB
Active(file): 5726860 kB
Inactive(file): 16924204 kB
Unevictable: 32 kB
Mlocked: 32 kB
SwapTotal: 0 kB
SwapFree: 0 kB
Dirty: 140 kB
Writeback: 0 kB
AnonPages: 1704432 kB
Mapped: 668832 kB
Shmem: 271724 kB
Slab: 612960 kB
SReclaimable: 448016 kB
SUnreclaim: 164944 kB
KernelStack: 14976 kB
PageTables: 55184 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 16457872 kB
Committed_AS: 8749324 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 0 kB
VmallocChunk: 0 kB
Percpu: 10944 kB
HardwareCorrupted: 0 kB
AnonHugePages: 608256 kB
ShmemHugePages: 0 kB
ShmemPmdMapped: 0 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB
Hugetlb: 0 kB
DirectMap4k: 1221876 kB
DirectMap2M: 27021312 kB
DirectMap1G: 6291456 kB
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