cputlb: Remove dead function tlb_update_dirty()

Signed-off-by: Nliguang <lig.fnst@cn.fujitsu.com>
Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NAndreas Färber <afaerber@suse.de>

cputlb.c

@@ -169,21 +169,6 @@ static inline ram_addr_t qemu_ram_addr_from_host_nofail(void *ptr)
     return ram_addr;
 }
 
-static inline void tlb_update_dirty(CPUTLBEntry *tlb_entry)
-{
-    ram_addr_t ram_addr;
-    void *p;
-
-    if (tlb_is_dirty_ram(tlb_entry)) {
-        p = (void *)(uintptr_t)((tlb_entry->addr_write & TARGET_PAGE_MASK)
-            + tlb_entry->addend);
-        ram_addr = qemu_ram_addr_from_host_nofail(p);
-        if (!cpu_physical_memory_is_dirty(ram_addr)) {
-            tlb_entry->addr_write |= TLB_NOTDIRTY;
-        }
-    }
-}
-
 void cpu_tlb_reset_dirty_all(ram_addr_t start1, ram_addr_t length)
 {
     CPUState *cpu;