[PATCH 4/6] cputlb: used cached CPUClass in our hot-paths

[Cédric Le Goater]

From: Alex Bennée <alex.bennee@linaro.org>

Before: 35.912 s ±  0.168 s
  After: 35.565 s ±  0.087 s

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220811151413.3350684-5-alex.bennee@linaro.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
---
 accel/tcg/cputlb.c | 15 ++++++---------
 1 file changed, 6 insertions(+), 9 deletions(-)

diff --git a/accel/tcg/cputlb.c b/accel/tcg/cputlb.c
index 8fad2d9b83cd..193bfc1cfc14 100644
--- a/accel/tcg/cputlb.c
+++ b/accel/tcg/cputlb.c
@@ -1291,15 +1291,14 @@ void tlb_set_page(CPUState *cpu, target_ulong vaddr,
 static void tlb_fill(CPUState *cpu, target_ulong addr, int size,
                      MMUAccessType access_type, int mmu_idx, uintptr_t retaddr)
 {
-    CPUClass *cc = CPU_GET_CLASS(cpu);
     bool ok;
 
     /*
      * This is not a probe, so only valid return is success; failure
      * should result in exception + longjmp to the cpu loop.
      */
-    ok = cc->tcg_ops->tlb_fill(cpu, addr, size,
-                               access_type, mmu_idx, false, retaddr);
+    ok = cpu->cc->tcg_ops->tlb_fill(cpu, addr, size,
+                                    access_type, mmu_idx, false, retaddr);
     assert(ok);
 }
 
@@ -1307,9 +1306,8 @@ static inline void cpu_unaligned_access(CPUState *cpu, 
vaddr addr,
                                         MMUAccessType access_type,
                                         int mmu_idx, uintptr_t retaddr)
 {
-    CPUClass *cc = CPU_GET_CLASS(cpu);
-
-    cc->tcg_ops->do_unaligned_access(cpu, addr, access_type, mmu_idx, retaddr);
+    cpu->cc->tcg_ops->do_unaligned_access(cpu, addr, access_type,
+                                          mmu_idx, retaddr);
 }
 
 static inline void cpu_transaction_failed(CPUState *cpu, hwaddr physaddr,
@@ -1539,10 +1537,9 @@ static int probe_access_internal(CPUArchState *env, 
target_ulong addr,
     if (!tlb_hit_page(tlb_addr, page_addr)) {
         if (!victim_tlb_hit(env, mmu_idx, index, elt_ofs, page_addr)) {
             CPUState *cs = env_cpu(env);
-            CPUClass *cc = CPU_GET_CLASS(cs);
 
-            if (!cc->tcg_ops->tlb_fill(cs, addr, fault_size, access_type,
-                                       mmu_idx, nonfault, retaddr)) {
+            if (!cs->cc->tcg_ops->tlb_fill(cs, addr, fault_size, access_type,
+                                           mmu_idx, nonfault, retaddr)) {
                 /* Non-faulting page table read failed.  */
                 *phost = NULL;
                 return TLB_INVALID_MASK;
-- 
2.37.3