On 06/13/2018 05:45 PM, Ram Pai wrote:
> +void test_read_of_access_disabled_region_with_page_already_mapped(int *ptr,
> + u16 pkey)
> +{
> + int ptr_contents;
> +
> + dprintf1("disabling access to PKEY[%02d], doing read @ %p\n",
> + pkey, ptr);
> + ptr_contents = read_ptr(ptr);
> + dprintf1("reading ptr before disabling the read : %d\n",
> + ptr_contents);
> + read_pkey_reg();
> + pkey_access_deny(pkey);
> + ptr_contents = read_ptr(ptr);
> + dprintf1("*ptr: %d\n", ptr_contents);
> + expected_pkey_fault(pkey);
> +}
Looks fine to me. I'm a bit surprised we didn't do this already, which
is a good thing for this patch.
FWIW, if you took patches like this and put them first, you could
probably get it merged now. Yes, I know it would mean redoing some of
the later code move and rename ones.
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