diff options
| author | Paolo Bonzini <pbonzini@redhat.com> | 2015-06-24 14:16:26 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-08-14 23:40:32 +0200 |
| commit | 414b15c909c88e4cf5f10e80d033b3aa90bcc9e1 (patch) | |
| tree | 04d817361a25bc06a6243d5cfcf693017fe4bc5c /include/exec | |
| parent | b4a4b8d0e0767c85946fd8fc404643bf5766351a (diff) | |
exec: drop cpu_can_do_io, just read cpu->can_do_io
After commit 626cf8f (icount: set can_do_io outside TB execution,
2014-12-08), can_do_io is set to 1 if not executing code. It is
no longer necessary to make this assumption in cpu_can_do_io.
It is also possible to remove the use_icount test, simply by
never setting cpu->can_do_io to 0 unless use_icount is true.
With these changes cpu_can_do_io boils down to a read of
cpu->can_do_io.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'include/exec')
| -rw-r--r-- | include/exec/exec-all.h | 21 |
1 files changed, 0 insertions, 21 deletions
diff --git a/include/exec/exec-all.h b/include/exec/exec-all.h index 84272253b3..29775c012c 100644 --- a/include/exec/exec-all.h +++ b/include/exec/exec-all.h @@ -346,27 +346,6 @@ extern int singlestep; /* cpu-exec.c */ extern volatile sig_atomic_t exit_request; -/** - * cpu_can_do_io: - * @cpu: The CPU for which to check IO. - * - * Deterministic execution requires that IO only be performed on the last - * instruction of a TB so that interrupts take effect immediately. - * - * Returns: %true if memory-mapped IO is safe, %false otherwise. - */ -static inline bool cpu_can_do_io(CPUState *cpu) -{ - if (!use_icount) { - return true; - } - /* If not executing code then assume we are ok. */ - if (cpu->current_tb == NULL) { - return true; - } - return cpu->can_do_io != 0; -} - #if !defined(CONFIG_USER_ONLY) void migration_bitmap_extend(ram_addr_t old, ram_addr_t new); #endif |