On 12.06.2020 17:56, Roger Pau Monne wrote: > When the IO APIC pin mapped to the ISA IRQ 0 has been configured to > use fixed delivery mode do not forcefully route interrupts to vCPU 0, > as the OS might have setup those interrupts to be injected to a > different vCPU, and injecting to vCPU 0 can cause the OS to miss such > interrupts or errors to happen due to unexpected vectors being > injected on vCPU 0. > > In order to fix remove such handling altogether for fixed destination > mode pins and just inject them according to the data setup in the > IO-APIC entry. > > Signed-off-by: Roger Pau Monné <roger....@citrix.com>
Technically Reviewed-by: Jan Beulich <jbeul...@suse.com> I wonder though why this was done in the first place - it very much feels like a workaround for certain guest behavior, and hence getting rid of it may mean a certain risk of regressions. Not a very good point in time to make risky changes ... Jan
