[Xen-devel] about memory migration between NUMA nodes based on HVM

[butine@xxxxxxxxxx]

hello,Dario,

when is released the new version of memory migration between NUMA nodes based on HVM?

Based on your initial version,If I start a pvm, when I call this code, error occured.

for ( i = 0; i < minfo.p2m_size; i++ )
    {
        if ( (minfo.pfn_type[i] & XEN_DOMCTL_PFINFO_LPINTAB) == 0 )
            continue;

        pin[nr_pins].cmd = MMUEXT_UNPIN_TABLE;
        pin[nr_pins].arg1.mfn = minfo.p2m_table[i];
        nr_pins++;

        if ( nr_pins == MAX_PIN_BATCH )
        {
            if ( xc_mmuext_op(xch, pin, nr_pins, domid) < 0 )
            {
                PERROR("Failed to unpin a batch of %d MFNs", nr_pins);
                goto out;
            }
            else
                DBGPRINTF("Unpinned a batch of %d MFNs", nr_pins);
            nr_pins = 0;
        }
   
Through gdb, I find minfo.p2m_table[i] can visit some invaild memory. some value of minfo.p2m_table[i] may be very largh like 0xffffffffffffffff. if minfo.p2m_size is 135424, it just happen at  about 133000 - 134000. I don't know what is going wrong. minfo.p2m_size and minfo.p2m_table[i] is got from function xc_core_arch_map_p2m_rw():

 dinfo->p2m_size = nr_gpfns(xch, info->domid);

...

*live_p2m = xc_map_foreign_pages(xch, dom,
                                    rw ? (PROT_READ | PROT_WRITE) : PROT_READ,
                                    p2m_frame_list,
                                    P2M_FL_ENTRIES);

Is it right?

 

Thanks

Regard,
Butine Huang
2013-09-15

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