Re: [Qemu-devel] [PATCH v4 2/4] linux-user: Set PAGE_TARGET_1 for TARGET_PROT_BTI

[Peter Maydell]

On Sat, 30 Mar 2019 at 00:59, Richard Henderson
<address@hidden> wrote:
>
> There is agreement that there will be a mmap/mprotect bit,
> although no word yet on the value or the name.   Invent a
> name to make forward progress.
>
> The PAGE_TARGET_1 bit, is qemu internal, and allows the
> target something to query from the guest page tables.
>
> Signed-off-by: Richard Henderson <address@hidden>

This looks ok code-wise, but we'd need to hide it behind
a defaults-to-off x-something property if we wanted to
commit it before the kernel ABI is fixed.

Do we also need to handle this in mprotect() ?

thanks
-- PMM