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linux-user: Allow -R values up to 0xffff0000 for 32-bit ARM guests
The 32-bit ARM validate_guest_space() check tests whether the specified -R value leaves enough space for us to put the commpage in at 0xffff0f00. However it was incorrectly doing a <= check for the check against (guest_base + guest_size), which meant that it wasn't permitting the guest space to butt right up against the commpage. Fix the comparison, so that -R values all the way up to 0xffff0000 work correctly. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
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