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Date:      Thu, 25 Jul 2019 21:31:16 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 239351] [panic] spin lock held too long under heavy load (net/wireguard affected)
Message-ID:  <bug-239351-227-c4pxu5f3fx@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-239351-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=239351

--- Comment #19 from Evilham <contact@evilham.com> ---
(In reply to Konstantin Belousov from comment #18)

Indeed AMD.

The requested sysctl:

# sysctl hw.lower_amd64_sharedpage
hw.lower_amd64_sharedpage: 1


System data from boot log:

CPU: AMD Ryzen 7 PRO 2700U w/ Radeon Vega Mobile Gfx (2195.94-MHz K8-class CPU)
  Origin="AuthenticAMD"  Id=0x810f10  Family=0x17  Model=0x11  Stepping=0
 
Features=0x178bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2,HTT>
 
Features2=0x7ed8320b<SSE3,PCLMULQDQ,MON,SSSE3,FMA,CX16,SSE4.1,SSE4.2,MOVBE,POPCNT,AESNI,XSAVE,OSXSAVE,AVX,F16C,RDRAND>
  AMD Features=0x2e500800<SYSCALL,NX,MMX+,FFXSR,Page1GB,RDTSCP,LM>
  AMD
Features2=0x35c233ff<LAHF,CMP,SVM,ExtAPIC,CR8,ABM,SSE4A,MAS,Prefetch,OSVW,SKINIT,WDT,TCE,Topology,PCXC,PNXC,DBE,PL2I,MWAITX>
  Structured Extended
Features=0x209c01a9<FSGSBASE,BMI1,AVX2,SMEP,BMI2,RDSEED,ADX,SMAP,CLFLUSHOPT,SHA>
  XSAVE Features=0xf<XSAVEOPT,XSAVEC,XINUSE,XSAVES>
  AMD Extended Feature Extensions ID EBX=0x1007<CLZERO,IRPerf,XSaveErPtr,IBPB>
  SVM: NP,NRIP,VClean,AFlush,DAssist,NAsids=32768
  TSC: P-state invariant, performance statistics
real memory  = 34359738368 (32768 MB)
avail memory = 32123269120 (30635 MB)
Event timer "LAPIC" quality 600
ACPI APIC Table: <LENOVO TP-R0W  >
FreeBSD/SMP: Multiprocessor System Detected: 8 CPUs
FreeBSD/SMP: 1 package(s) x 4 core(s) x 2 hardware threads

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