>>> On 23.01.18 at 16:07, <roger....@citrix.com> wrote: > When a MSI device with per-vector masking capabilities is detected or > added to Xen all the vectors are masked when initializing it. This > implies that the first time the interrupt is bound to a domain it's > masked. > > This however only applies to the first time the interrupt is bound > because neither the unbind nor the pirq unmap will mask the vector > again. In order to fix this re-mask the interrupt when unbinding it > from a guest. This makes sure that pairs of bind/unbind will always > get the same masking state. > > Note that no issues have been reported regarding this behavior because > QEMU always uses the newly introduced XEN_PT_GFLAGSSHIFT_UNMASKED when > binding interrupts, so it's always unmasked. > > Signed-off-by: Roger Pau Monné <roger....@citrix.com>
Reviewed-by: Jan Beulich <jbeul...@suse.com> _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
