On Fri, Dec 9, 2011 at 8:55 AM, Matt Evans <matt@xxxxxxxxxx> wrote:
> Add a --hugetlbfs commandline option to give a path to hugetlbfs-map guest
> memory (down in kvm__arch_init()). For x86, guest memory is a normal
> ANON mmap() if this option is not provided, otherwise a hugetlbfs mmap.
>
> Signed-off-by: Matt Evans <matt@xxxxxxxxxx>
> +void *mmap_hugetlbfs(const char *htlbfs_path, u64 size)
> +{
> + char mpath[PATH_MAX];
> + int fd;
> + int r;
> + struct statfs sfs;
> + void *addr;
> +
> + do {
> + /*
> + * QEMU seems to work around this returning EINTR... Let's do
> + * that too.
> + */
> + r = statfs(htlbfs_path, &sfs);
> + } while (r && errno == EINTR);
Can this really happen? What about EAGAIN? The retry logic really
wants to live in tools/kvm/read-write.c as a xstatfs() wrapper if we
do need this.
Pekka
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