diff options
| -rw-r--r-- | exec-all.h | 2 | ||||
| -rw-r--r-- | exec.c | 17 | ||||
| -rw-r--r-- | linux-user/mmap.c | 6 |
3 files changed, 24 insertions, 1 deletions
diff --git a/exec-all.h b/exec-all.h index c1b7e1f263..9bda7f7354 100644 --- a/exec-all.h +++ b/exec-all.h @@ -96,6 +96,8 @@ void QEMU_NORETURN cpu_loop_exit(CPUArchState *env1); int page_unprotect(target_ulong address, uintptr_t pc, void *puc); void tb_invalidate_phys_page_range(tb_page_addr_t start, tb_page_addr_t end, int is_cpu_write_access); +void tb_invalidate_phys_range(tb_page_addr_t start, tb_page_addr_t end, + int is_cpu_write_access); #if !defined(CONFIG_USER_ONLY) /* cputlb.c */ void tlb_flush_page(CPUArchState *env, target_ulong addr); @@ -1075,6 +1075,23 @@ TranslationBlock *tb_gen_code(CPUArchState *env, return tb; } +/* + * invalidate all TBs which intersect with the target physical pages + * starting in range [start;end[. NOTE: start and end may refer to + * different physical pages. 'is_cpu_write_access' should be true if called + * from a real cpu write access: the virtual CPU will exit the current + * TB if code is modified inside this TB. + */ +void tb_invalidate_phys_range(tb_page_addr_t start, tb_page_addr_t end, + int is_cpu_write_access) +{ + while (start < end) { + tb_invalidate_phys_page_range(start, end, is_cpu_write_access); + start &= TARGET_PAGE_MASK; + start += TARGET_PAGE_SIZE; + } +} + /* invalidate all TBs which intersect with the target physical page starting in range [start;end[. NOTE: start and end must refer to the same physical page. 'is_cpu_write_access' should be true if called diff --git a/linux-user/mmap.c b/linux-user/mmap.c index 7125d1cd4b..d9468fea90 100644 --- a/linux-user/mmap.c +++ b/linux-user/mmap.c @@ -573,6 +573,7 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int prot, page_dump(stdout); printf("\n"); #endif + tb_invalidate_phys_range(start, start + len, 0); mmap_unlock(); return start; fail: @@ -675,8 +676,10 @@ int target_munmap(abi_ulong start, abi_ulong len) } } - if (ret == 0) + if (ret == 0) { page_set_flags(start, start + len, 0); + tb_invalidate_phys_range(start, start + len, 0); + } mmap_unlock(); return ret; } @@ -754,6 +757,7 @@ abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size, page_set_flags(old_addr, old_addr + old_size, 0); page_set_flags(new_addr, new_addr + new_size, prot | PAGE_VALID); } + tb_invalidate_phys_range(new_addr, new_addr + new_size, 0); mmap_unlock(); return new_addr; } |