On Sat, 26 Sep 2009, Alan Cox wrote: > John Baldwin wrote: > > On Friday 25 September 2009 3:20:05 am Daniel O'Connor wrote: > >> On Thu, 24 Sep 2009, John Baldwin wrote: > >>> Can you try this patch perhaps: > >>> > >>> Index: sys/amd64/isa/isa_dma.c > >>> ================================================================= > >>>== --- isa_dma.c (revision 197430) > >>> +++ isa_dma.c (working copy) > >> > >> This patch fixes the panic for me. > >> > >> I haven't tried printing (don't have any device handy here). > > > > I wonder if pmap_extract(kernel_pmap) doesn't work with direct map > > addresses for some reason? I kind of find that hard to believe > > actually. Alan, the original panic was in > > pmap_extract(kernel_pmap, ...) calls in the isa_dma code. My patch > > that "fixes" the panic just changes them to pmap_kextract(). > > Is this problem occurring on an AMD processor?
Yes, CPU: AMD Athlon(tm) II X2 240 Processor (2812.73-MHz K8-class CPU) Origin = "AuthenticAMD" Id = 0x100f62 Stepping = 2 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=0x802009<SSE3,MON,CX16,POPCNT> AMD Features=0xee500800<SYSCALL,NX,MMX+,FFXSR,Page1GB,RDTSCP,LM,3DNow!+,3DNow!> AMD Features2=0x37ff<LAHF,CMP,SVM,ExtAPIC,CR8,ABM,SSE4A,MAS,Prefetch,OSVW,IBS,SKINIT,WDT> TSC: P-state invariant real memory = 4294967296 (4096 MB) avail memory = 3974762496 (3790 MB) -- Daniel O'Connor software and network engineer for Genesis Software - http://www.gsoft.com.au "The nice thing about standards is that there are so many of them to choose from." -- Andrew Tanenbaum GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C
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