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| author | Stafford Horne <shorne@gmail.com> | 2022-06-15 08:43:56 +0900 |
|---|---|---|
| committer | Stafford Horne <shorne@gmail.com> | 2022-09-04 07:02:57 +0100 |
| commit | 6a0fc96ad2b16a264ead6b696bdb91a963450dbb (patch) | |
| tree | bc0788cebe1049a888fce15c29ba1c0cfdc57867 /target/openrisc/sys_helper.c | |
| parent | bbe6855ef80f61c6b00da22aa0cd550d79d8e381 (diff) | |
| download | qemu-6a0fc96ad2b16a264ead6b696bdb91a963450dbb.zip qemu-6a0fc96ad2b16a264ead6b696bdb91a963450dbb.tar.gz qemu-6a0fc96ad2b16a264ead6b696bdb91a963450dbb.tar.bz2 | |
target/openrisc: Enable MTTCG
This patch enables multithread TCG for OpenRISC. Since the or1k shared
syncrhonized timer can be updated from each vCPU via helpers we use a
mutex to synchronize updates.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Stafford Horne <shorne@gmail.com>
Diffstat (limited to 'target/openrisc/sys_helper.c')
| -rw-r--r-- | target/openrisc/sys_helper.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/target/openrisc/sys_helper.c b/target/openrisc/sys_helper.c index 4867423..da88ad9 100644 --- a/target/openrisc/sys_helper.c +++ b/target/openrisc/sys_helper.c @@ -145,6 +145,7 @@ void HELPER(mtspr)(CPUOpenRISCState *env, target_ulong spr, target_ulong rb) break; case TO_SPR(10, 0): /* TTMR */ { + qemu_mutex_lock_iothread(); if ((env->ttmr & TTMR_M) ^ (rb & TTMR_M)) { switch (rb & TTMR_M) { case TIMER_NONE: @@ -168,14 +169,16 @@ void HELPER(mtspr)(CPUOpenRISCState *env, target_ulong spr, target_ulong rb) env->ttmr = rb & ~TTMR_IP; cs->interrupt_request &= ~CPU_INTERRUPT_TIMER; } - cpu_openrisc_timer_update(cpu); + qemu_mutex_unlock_iothread(); } break; case TO_SPR(10, 1): /* TTCR */ + qemu_mutex_lock_iothread(); cpu_openrisc_count_set(cpu, rb); cpu_openrisc_timer_update(cpu); + qemu_mutex_unlock_iothread(); break; #endif @@ -303,7 +306,9 @@ target_ulong HELPER(mfspr)(CPUOpenRISCState *env, target_ulong rd, return env->ttmr; case TO_SPR(10, 1): /* TTCR */ + qemu_mutex_lock_iothread(); cpu_openrisc_count_update(cpu); + qemu_mutex_unlock_iothread(); return cpu_openrisc_count_get(cpu); #endif |