This patch enables the ultravisor adapter interruption vitualization support. Changes in v3: - cache and test GISA descriptor only once in kvm_s390_gisa_enable() - modified some comments - removed some whitespace issues Changes in v2: - moved GISA disable into "put CPUs in PV mode" routine - moved GISA enable into "pull CPUs out of PV mode" routine [1] https://lore.kernel.org/lkml/ae7c65d8-f632-a7f4-926a-50b9660673a1@xxxxxxxxxxxxx/T/#mcb67699bf458ba7482f6b7529afe589d1dbb5930 [2] https://lore.kernel.org/kvm/20220208165310.3905815-1-mimu@xxxxxxxxxxxxx/T/#e0ecf74ad7fdccc5ed22007e783106d4ef7b849df Michael Mueller (1): KVM: s390: pv: make use of ultravisor AIV support arch/s390/include/asm/uv.h | 1 + arch/s390/kvm/interrupt.c | 56 ++++++++++++++++++++++++++++++++++---- arch/s390/kvm/kvm-s390.c | 11 ++++++-- arch/s390/kvm/kvm-s390.h | 11 ++++++++ 4 files changed, 70 insertions(+), 9 deletions(-) -- 2.32.0
