diff options
| -rw-r--r-- | cputlb.c | 97 | ||||
| -rw-r--r-- | include/exec/exec-all.h | 47 |
2 files changed, 144 insertions, 0 deletions
@@ -69,6 +69,47 @@ void tlb_flush(CPUState *cpu, int flush_global) tlb_flush_count++; } +static inline void v_tlb_flush_by_mmuidx(CPUState *cpu, va_list argp) +{ + CPUArchState *env = cpu->env_ptr; + +#if defined(DEBUG_TLB) + printf("tlb_flush_by_mmuidx:"); +#endif + /* must reset current TB so that interrupts cannot modify the + links while we are modifying them */ + cpu->current_tb = NULL; + + for (;;) { + int mmu_idx = va_arg(argp, int); + + if (mmu_idx < 0) { + break; + } + +#if defined(DEBUG_TLB) + printf(" %d", mmu_idx); +#endif + + memset(env->tlb_table[mmu_idx], -1, sizeof(env->tlb_table[0])); + memset(env->tlb_v_table[mmu_idx], -1, sizeof(env->tlb_v_table[0])); + } + +#if defined(DEBUG_TLB) + printf("\n"); +#endif + + memset(cpu->tb_jmp_cache, 0, sizeof(cpu->tb_jmp_cache)); +} + +void tlb_flush_by_mmuidx(CPUState *cpu, ...) +{ + va_list argp; + va_start(argp, cpu); + v_tlb_flush_by_mmuidx(cpu, argp); + va_end(argp); +} + static inline void tlb_flush_entry(CPUTLBEntry *tlb_entry, target_ulong addr) { if (addr == (tlb_entry->addr_read & @@ -121,6 +162,62 @@ void tlb_flush_page(CPUState *cpu, target_ulong addr) tb_flush_jmp_cache(cpu, addr); } +void tlb_flush_page_by_mmuidx(CPUState *cpu, target_ulong addr, ...) +{ + CPUArchState *env = cpu->env_ptr; + int i, k; + va_list argp; + + va_start(argp, addr); + +#if defined(DEBUG_TLB) + printf("tlb_flush_page_by_mmu_idx: " TARGET_FMT_lx, addr); +#endif + /* Check if we need to flush due to large pages. */ + if ((addr & env->tlb_flush_mask) == env->tlb_flush_addr) { +#if defined(DEBUG_TLB) + printf(" forced full flush (" + TARGET_FMT_lx "/" TARGET_FMT_lx ")\n", + env->tlb_flush_addr, env->tlb_flush_mask); +#endif + v_tlb_flush_by_mmuidx(cpu, argp); + va_end(argp); + return; + } + /* must reset current TB so that interrupts cannot modify the + links while we are modifying them */ + cpu->current_tb = NULL; + + addr &= TARGET_PAGE_MASK; + i = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1); + + for (;;) { + int mmu_idx = va_arg(argp, int); + + if (mmu_idx < 0) { + break; + } + +#if defined(DEBUG_TLB) + printf(" %d", mmu_idx); +#endif + + tlb_flush_entry(&env->tlb_table[mmu_idx][i], addr); + + /* check whether there are vltb entries that need to be flushed */ + for (k = 0; k < CPU_VTLB_SIZE; k++) { + tlb_flush_entry(&env->tlb_v_table[mmu_idx][k], addr); + } + } + va_end(argp); + +#if defined(DEBUG_TLB) + printf("\n"); +#endif + + tb_flush_jmp_cache(cpu, addr); +} + /* update the TLBs so that writes to code in the virtual page 'addr' can be detected */ void tlb_protect_code(ram_addr_t ram_addr) diff --git a/include/exec/exec-all.h b/include/exec/exec-all.h index 29775c012c..fbc6dcb90c 100644 --- a/include/exec/exec-all.h +++ b/include/exec/exec-all.h @@ -96,8 +96,46 @@ bool qemu_in_vcpu_thread(void); void cpu_reload_memory_map(CPUState *cpu); void tcg_cpu_address_space_init(CPUState *cpu, AddressSpace *as); /* cputlb.c */ +/** + * tlb_flush_page: + * @cpu: CPU whose TLB should be flushed + * @addr: virtual address of page to be flushed + * + * Flush one page from the TLB of the specified CPU, for all + * MMU indexes. + */ void tlb_flush_page(CPUState *cpu, target_ulong addr); +/** + * tlb_flush: + * @cpu: CPU whose TLB should be flushed + * @flush_global: ignored + * + * Flush the entire TLB for the specified CPU. + * The flush_global flag is in theory an indicator of whether the whole + * TLB should be flushed, or only those entries not marked global. + * In practice QEMU does not implement any global/not global flag for + * TLB entries, and the argument is ignored. + */ void tlb_flush(CPUState *cpu, int flush_global); +/** + * tlb_flush_page_by_mmuidx: + * @cpu: CPU whose TLB should be flushed + * @addr: virtual address of page to be flushed + * @...: list of MMU indexes to flush, terminated by a negative value + * + * Flush one page from the TLB of the specified CPU, for the specified + * MMU indexes. + */ +void tlb_flush_page_by_mmuidx(CPUState *cpu, target_ulong addr, ...); +/** + * tlb_flush_by_mmuidx: + * @cpu: CPU whose TLB should be flushed + * @...: list of MMU indexes to flush, terminated by a negative value + * + * Flush all entries from the TLB of the specified CPU, for the specified + * MMU indexes. + */ +void tlb_flush_by_mmuidx(CPUState *cpu, ...); void tlb_set_page(CPUState *cpu, target_ulong vaddr, hwaddr paddr, int prot, int mmu_idx, target_ulong size); @@ -115,6 +153,15 @@ static inline void tlb_flush_page(CPUState *cpu, target_ulong addr) static inline void tlb_flush(CPUState *cpu, int flush_global) { } + +static inline void tlb_flush_page_by_mmuidx(CPUState *cpu, + target_ulong addr, ...) +{ +} + +static inline void tlb_flush_by_mmuidx(CPUState *cpu, ...) +{ +} #endif #define CODE_GEN_ALIGN 16 /* must be >= of the size of a icache line */ |