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[PATCH v4 02/41] accel/tcg: Move clear_helper_retaddr to cpu loop
From: |
Richard Henderson |
Subject: |
[PATCH v4 02/41] accel/tcg: Move clear_helper_retaddr to cpu loop |
Date: |
Wed, 6 Oct 2021 10:22:28 -0700 |
Currently there are only two places that require we reset this
value before exiting to the main loop, but that will change.
Reviewed-by: Warner Losh <imp@bsdimp.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
accel/tcg/cpu-exec.c | 3 ++-
accel/tcg/user-exec.c | 2 --
2 files changed, 2 insertions(+), 3 deletions(-)
diff --git a/accel/tcg/cpu-exec.c b/accel/tcg/cpu-exec.c
index 5fd1ed3422..410588d08a 100644
--- a/accel/tcg/cpu-exec.c
+++ b/accel/tcg/cpu-exec.c
@@ -451,6 +451,7 @@ void cpu_exec_step_atomic(CPUState *cpu)
* memory.
*/
#ifndef CONFIG_SOFTMMU
+ clear_helper_retaddr();
tcg_debug_assert(!have_mmap_lock());
#endif
if (qemu_mutex_iothread_locked()) {
@@ -460,7 +461,6 @@ void cpu_exec_step_atomic(CPUState *cpu)
qemu_plugin_disable_mem_helpers(cpu);
}
-
/*
* As we start the exclusive region before codegen we must still
* be in the region if we longjump out of either the codegen or
@@ -905,6 +905,7 @@ int cpu_exec(CPUState *cpu)
#endif
#ifndef CONFIG_SOFTMMU
+ clear_helper_retaddr();
tcg_debug_assert(!have_mmap_lock());
#endif
if (qemu_mutex_iothread_locked()) {
diff --git a/accel/tcg/user-exec.c b/accel/tcg/user-exec.c
index 9feec76fb6..6bb87faac9 100644
--- a/accel/tcg/user-exec.c
+++ b/accel/tcg/user-exec.c
@@ -175,7 +175,6 @@ static inline int handle_cpu_signal(uintptr_t pc, siginfo_t
*info,
* currently executing TB was modified and must be exited
* immediately. Clear helper_retaddr for next execution.
*/
- clear_helper_retaddr();
cpu_exit_tb_from_sighandler(cpu, old_set);
/* NORETURN */
@@ -193,7 +192,6 @@ static inline int handle_cpu_signal(uintptr_t pc, siginfo_t
*info,
* an exception. Undo signal and retaddr state prior to longjmp.
*/
sigprocmask(SIG_SETMASK, old_set, NULL);
- clear_helper_retaddr();
cc = CPU_GET_CLASS(cpu);
cc->tcg_ops->tlb_fill(cpu, address, 0, access_type,
--
2.25.1
- [PATCH v4 33/41] target/openrisc: Make openrisc_cpu_tlb_fill sysemu only, (continued)
- [PATCH v4 33/41] target/openrisc: Make openrisc_cpu_tlb_fill sysemu only, Richard Henderson, 2021/10/06
- [PATCH v4 34/41] target/ppc: Implement ppc_cpu_record_sigsegv, Richard Henderson, 2021/10/06
- [PATCH v4 24/41] target/cris: Make cris_cpu_tlb_fill sysemu only, Richard Henderson, 2021/10/06
- [PATCH v4 07/41] linux-user/host/x86: Populate host_signal.h, Richard Henderson, 2021/10/06
- [PATCH v4 09/41] linux-user/host/alpha: Populate host_signal.h, Richard Henderson, 2021/10/06
- [PATCH v4 37/41] target/s390x: Implement s390_cpu_record_sigsegv, Richard Henderson, 2021/10/06
- [PATCH v4 39/41] target/sparc: Make sparc_cpu_tlb_fill sysemu only, Richard Henderson, 2021/10/06
- [PATCH v4 11/41] linux-user/host/arm: Populate host_signal.h, Richard Henderson, 2021/10/06
- [PATCH v4 01/41] accel/tcg: Split out adjust_signal_pc, Richard Henderson, 2021/10/06
- [PATCH v4 08/41] linux-user/host/ppc: Populate host_signal.h, Richard Henderson, 2021/10/06
- [PATCH v4 02/41] accel/tcg: Move clear_helper_retaddr to cpu loop,
Richard Henderson <=
- [PATCH v4 22/41] target/arm: Use cpu_loop_exit_sigsegv for mte tag lookup, Richard Henderson, 2021/10/06
- [PATCH v4 25/41] target/hexagon: Remove hexagon_cpu_tlb_fill, Richard Henderson, 2021/10/06
- [PATCH v4 31/41] target/nios2: Implement nios2_cpu_record_sigsegv, Richard Henderson, 2021/10/06
- [PATCH v4 30/41] target/mips: Make mips_cpu_tlb_fill sysemu only, Richard Henderson, 2021/10/06
- [PATCH v4 32/41] linux-user/openrisc: Adjust signal for EXCP_RANGE, EXCP_FPE, Richard Henderson, 2021/10/06
- [PATCH v4 36/41] target/s390x: Use probe_access_flags in s390_probe_access, Richard Henderson, 2021/10/06
- [PATCH v4 35/41] target/riscv: Make riscv_cpu_tlb_fill sysemu only, Richard Henderson, 2021/10/06
- [PATCH v4 38/41] target/sh4: Make sh4_cpu_tlb_fill sysemu only, Richard Henderson, 2021/10/06