Ignore attempts to complete non-existent IRQs; this fixes a buffer overrun if the guest writes a bad value to the GICC_EOIR register. (This case is UNPREDICTABLE so ignoring it is a valid choice.) Note that doing nothing if the guest writes 1023 to this register is not in fact a change in behaviour: the old code would also always do nothing in this case but in a non-obvious way. (The buffer overrun was noted by Coverity, see bug 887883.) Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Andrzej Zaborowski <andrew.zaborowski@intel.com>
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Read the documentation in qemu-doc.html. Fabrice Bellard.
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