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    SubjectRe: [patch] rfc: introduce /dev/hugetlb
    On 3/23/07, William Lee Irwin III <> wrote:
    > I like this patch a lot, though I'm not likely to get around to testing
    > it today. If userspace testcode is available that would be great to see
    > posted so I can just boot into things and run that.

    Here is the test code that I used:
    (warning: x86 centric)

    #include <stdlib.h>
    #include <stdio.h>
    #include <fcntl.h>
    #include <sys/mman.h>

    #define SIZE (4*1024*1024UL)

    int main(void)
    int fd;
    long i;
    char *addr;
    fd = open("/dev/hugetlb", O_RDWR);
    if (fd == -1) {
    perror("open failure");
    addr = mmap(0, SIZE, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);
    if (addr == MAP_FAILED) {
    perror("mmap failure");
    for (i = 0; i < SIZE; i+=4096)
    addr[i] = 1;

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      Last update: 2007-03-23 22:59    [from the cache]
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