This patchset adds support for the new hcall H_RPT_INVALIDATE and replaces the nested tlb flush calls with this new hcall if support for the same exists. Changes in v8: ------------- - Used tlb_single_page_flush_ceiling in the process-scoped range flush routine to switch to full PID invalation if the number of pages is above the threshold - Moved iterating over page sizes into the actual routine that handles the eventual flushing thereby limiting the page size iteration only to range based flushing - Converted #if 0 section into a comment section to avoid checkpatch from complaining. - Used a threshold in the partition-scoped range flushing to switch to full LPID invalidation v7: https://lore.kernel.org/linuxppc-dev/20210505154642.178702-1-bharata@xxxxxxxxxxxxx/ Aneesh Kumar K.V (1): KVM: PPC: Book3S HV: Fix comments of H_RPT_INVALIDATE arguments Bharata B Rao (5): powerpc/book3s64/radix: Add H_RPT_INVALIDATE pgsize encodings to mmu_psize_def KVM: PPC: Book3S HV: Add support for H_RPT_INVALIDATE KVM: PPC: Book3S HV: Nested support in H_RPT_INVALIDATE KVM: PPC: Book3S HV: Add KVM_CAP_PPC_RPT_INVALIDATE capability KVM: PPC: Book3S HV: Use H_RPT_INVALIDATE in nested KVM Documentation/virt/kvm/api.rst | 18 ++ arch/powerpc/include/asm/book3s/64/mmu.h | 1 + .../include/asm/book3s/64/tlbflush-radix.h | 4 + arch/powerpc/include/asm/hvcall.h | 4 +- arch/powerpc/include/asm/kvm_book3s.h | 3 + arch/powerpc/include/asm/mmu_context.h | 9 + arch/powerpc/kvm/book3s_64_mmu_radix.c | 27 ++- arch/powerpc/kvm/book3s_hv.c | 89 +++++++++ arch/powerpc/kvm/book3s_hv_nested.c | 129 ++++++++++++- arch/powerpc/kvm/powerpc.c | 3 + arch/powerpc/mm/book3s64/radix_pgtable.c | 5 + arch/powerpc/mm/book3s64/radix_tlb.c | 176 +++++++++++++++++- include/uapi/linux/kvm.h | 1 + 13 files changed, 456 insertions(+), 13 deletions(-) -- 2.31.1
