[openib-general] FW: Mstflint - not working on ppc64 andwhendriver is not loaded on AMD

[Michael S. Tsirkin]

Quoting r. Moshe Kazir <moshek at voltaire.com>:
> Subject: RE: FW: Mstflint - not working on ppc64 andwhendriver is not loaded on AMD
> 
> 
> See attached files.

OK, so we can open the file, but can't mmap it.
Let's see if we can read it.
Pls compile the following test and run with strace:

>strace -f -x -v -o log a.out
>cat log

#define _XOPEN_SOURCE 500
#define _FILE_OFFSET_BITS 64

#include <stdio.h>

#include <unistd.h>

#include <netinet/in.h>
#include <endian.h>
#include <byteswap.h>
#include <errno.h>
#include <fcntl.h>
#include <string.h>
#include <stdlib.h>

int main()
{
        int fd, rc;
        unsigned value;
        fd = open("/sys/class/infiniband/mthca0/device/resource0" ,O_RDWR | O_SYNC);
        rc = pread(fd, &value, 4, 0xf0014);
        printf("0x%x\n", value);
        return 0;
}



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MST