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[PATCH] target/xtensa: enable all coprocessors for linux-user
From: |
Max Filippov |
Subject: |
[PATCH] target/xtensa: enable all coprocessors for linux-user |
Date: |
Sat, 29 Aug 2020 03:47:58 -0700 |
Linux userspace always sees coprocessors as enabled. CPENABLE register
and coprocessor exceptions are used internally by the kernel to manage
lazy coprocessor context switch. None of it is needed for linux-user.
Always enable all coprocessors for user emulation.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
---
target/xtensa/cpu.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/target/xtensa/cpu.c b/target/xtensa/cpu.c
index 6a033e778c95..88a32268a18b 100644
--- a/target/xtensa/cpu.c
+++ b/target/xtensa/cpu.c
@@ -93,6 +93,7 @@ static void xtensa_cpu_reset(DeviceState *dev)
!xtensa_abi_call0()) {
env->sregs[PS] |= PS_WOE;
}
+ env->sregs[CPENABLE] = 0xff;
#endif
env->sregs[VECBASE] = env->config->vecbase;
env->sregs[IBREAKENABLE] = 0;
--
2.20.1
- [PATCH] target/xtensa: enable all coprocessors for linux-user,
Max Filippov <=