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afa63fc0e3
During refactoring of kvm_irqchip_create(), the refactored code was returning
early from do_kvm_irqchip_create() function if the required essential
capabilities were not present in KVM. This was not translating to an early
return from kvm_irqchip_create() as was the case before refactoring.
This is because, do_kvm_irqchip_create() did not have a means to notify the
caller of the lack of required kvm capabilities. Fix this by making
do_notify_irqchip_create() return EOPNOTSUPP error when capabilities
are absent and then the caller can check the return code and return early.
Due to this regression during refactoring, all KVM guests on ppc64le hang
immediately during startup and this completely breaks all functionality on
that platform.
Fixes: 98884e0cc1 ("accel/kvm: add changes required to support KVM VM file descriptor change")
Message-ID: <20260413090010.60339-1-anisinha@redhat.com>
Reported-by: Misbah Anjum N <misanjum@linux.ibm.com>
Reported-by: Gautam Menghani <gautam@linux.ibm.com>
Tested-by: Misbah Anjum N <misanjum@linux.ibm.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Ani Sinha <anisinha@redhat.com>
Message-id: 20260414045911.63662-1-anisinha@redhat.com
Suggested-by: Fabiano Rosas <farosas@suse.de>
Suggested-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Tested-by: Misbah Anjum N <misanjum@linux.ibm.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Ani Sinha <anisinha@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>