Junjie Mao 211fcd4f40 HV: ioapic: number of interrupt pins should be max_rte + 1 ...

The 23:16 bits in the IOAPIC version register is the highest entry in the I/O
redirection table, which is 1 smaller than the number of interrupt input
pins. But currently we use these bits directly as the number of pins.

This patch abstracts the pin count calculation code and adds 1 to the max rte
entry number to get the right pin count.

Signed-off-by: Junjie Mao <junjie.mao@intel.com>

2018-07-09 09:26:41 +08:00

..

x86

HV: ioapic: number of interrupt pins should be max_rte + 1

2018-07-09 09:26:41 +08:00