Re: panic of the day: pmap_enter: no pv entries available (amd64)

From: Christopher A. Kantarjiev (cak_at_dimebank.com)
Date: 07/27/05

  • Next message: Christopher A. Kantarjiev: "Re: panic of the day: pmap_enter: no pv entries available (amd64)" 
    Date: Tue, 26 Jul 2005 21:21:49 -0700

    Christopher A. Kantarjiev wrote:
    > This is on amd64, 2 dual-core Opteron CPUs with 16GB of RAM, running
    > 2.0.2_STABLE. This is the first time we've really exercised all the
    > memory (mostly using mmap to move large files in/out of memory).
    >
    > It's not immediately obvious how to increase the size of the PV pool; it
    > appears that pmap_alloc_pv() should be doing this dynamically as needed,
    > and I guess it's failing.

    It's been a long time since I looked at the uvm code in detail, but it sure
    looks like I'm out of kvm address space. So I did

    RCS file: RCS/vmparam.h,v
    retrieving revision 1.1
    diff -r1.1 vmparam.h
    102c102
    < #define VM_MAX_KERNEL_ADDRESS 0xffff800100000000 

    ---
 > #define VM_MAX_KERNEL_ADDRESS 0xffff800200000000
and we'll see what happens next - I'm ... reassured by the fact that it at least 
booted!
  • Next message: Christopher A. Kantarjiev: "Re: panic of the day: pmap_enter: no pv entries available (amd64)"

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