Signed-off-by: Luke Shumaker <lukeshu@parabola.nu>
Message-Id: <
20171228180814.9749-7-lukeshu@lukeshu.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
/* If the commpage lies within the already allocated guest space,
* then there is no way we can allocate it.
+ *
+ * You may be thinking that that this check is redundant because
+ * we already validated the guest size against MAX_RESERVED_VA;
+ * but if qemu_host_page_mask is unusually large, then
+ * test_page_addr may be lower.
*/
if (test_page_addr >= guest_base
&& test_page_addr < (guest_base + guest_size)) {