Re: [PATCH 1/2] linux-user: Validate mmap/mprotect prot value

[Peter Maydell]

On Tue, 19 May 2020 at 19:57, Richard Henderson
<richard.henderson@linaro.org> wrote:
>
> The kernel will return -EINVAL for bits set in the prot argument
> that are unknown or invalid.  Previously we were simply cropping
> out the bits that we care about.
>
> Introduce validate_prot_to_pageflags to perform this check in a
> single place between the two syscalls.  Differentiate between
> the target and host versions of prot.  Compute the qemu internal
> page_flags value at the same time.
>
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>

thanks
-- PMM