On Wed, Oct 04, 2023 at 08:22:08PM -0400, Rik van Riel wrote:
> On Wed, 2023-10-04 at 10:11 -0700, Breno Leitao wrote:
> >
> > +char *huge_ptr;
> > +
> > +/* Touch the memory while it is being madvised() */
> > +void *touch(void *unused)
> > +{
> > + char *ptr = (char *)huge_ptr;
> > +
> > +
On Wed, 2023-10-04 at 10:11 -0700, Breno Leitao wrote:
>
> +char *huge_ptr;
> +
> +/* Touch the memory while it is being madvised() */
> +void *touch(void *unused)
> +{
> + char *ptr = (char *)huge_ptr;
> +
> + if (!ptr) {
> + fprintf(stderr, "Failed to allocate memory\n"
Create a selftest that exercises the conflict between page faults and
madvise(MADV_DONTNEED) in the same huge page. Do it by running two
threads that touches the huge page and madvise(MADV_DONTNEED) at the same
time.
In case of a SIGBUS coming at pagefault, the test should fail, since we
hit the b
