This patch set is continuous MMU enhancement, it is focused on TLB
search, especially on function helper_invtlb_page_asid() and function
helper_invtlb_page_asid_or_g(). The code is similiar with function
loongarch_tlb_search(), one common API loongarch_tlb_search_cb() is
added for these functions.

Also there is optimization with qemu TLB flush, invalidate_tlb_entry()
is used to flush one TLB entry rather than flush all TLB entries.
---
v3 ... v4:
  1. Change return value from bool type to pointer type with function
     loongarch_tlb_search_cb() in newly added patch 8.
  2. Modification with code view comments from Richard

v2 ... v3:
  1. Remove optimization to flush QEMU TLB with MMU_USER_IDX, now both
     MMU_KERNEL_IDX and MMU_USER_IDX bitmap is added.
  2. Add field RESERVE with register CSR_STLBPS, field RESERVE keeps
     zero when change register CSR_STLBPS.

v1 ... v2:
  1. Add bugfix patch with CSR_STLBPS page size set issue.
  2. Add tlb entry invalidation in function invalidate_tlb(), it can be
     used in both helper_invtlb_page_asid() and function
     helper_invtlb_page_asid_or_g().
---
Bibo Mao (13):
  target/loongarch: Use mmu idx bitmap method when flush TLB
  target/loongarch: Add parameter tlb pointer with fill_tlb_entry
  target/loongarch: Reduce TLB flush with helper_tlbwr
  target/loongarch: Update TLB index selection method
  target/loongarch: Fix page size set issue with CSR_STLBPS
  target/loongarch: Add tlb search callback in loongarch_tlb_search()
  target/loongarch: Add common API loongarch_tlb_search_cb()
  target/loongarch: Change return value type with
    loongarch_tlb_search_cb()
  target/loongarch: Use loongarch_tlb_search_cb in
    helper_invtlb_page_asid_or_g
  target/loongarch: Use loongarch_tlb_search_cb in
    helper_invtlb_page_asid
  target/loongarch: Invalid tlb entry in invalidate_tlb()
  target/loongarch: Only flush one TLB entry in
    helper_invtlb_page_asid_or_g()
  target/loongarch: Only flush one TLB entry in
    helper_invtlb_page_asid()

 target/loongarch/cpu-csr.h        |   1 +
 target/loongarch/tcg/csr_helper.c |   5 +-
 target/loongarch/tcg/tlb_helper.c | 205 ++++++++++++++++++------------
 3 files changed, 131 insertions(+), 80 deletions(-)


base-commit: baa79455fa92984ff0f4b9ae94bed66823177a27
-- 
2.39.3