[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[PULL 8/8] target/xtensa: enable all coprocessors for linux-user
From: |
Laurent Vivier |
Subject: |
[PULL 8/8] target/xtensa: enable all coprocessors for linux-user |
Date: |
Mon, 26 Oct 2020 23:03:39 +0100 |
From: Max Filippov <jcmvbkbc@gmail.com>
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>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200829104758.22337-1-jcmvbkbc@gmail.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
---
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;
--
2.26.2
- [PULL 0/8] Linux user for 5.2 patches, Laurent Vivier, 2020/10/26
- [PULL 2/8] linux-user: Support f_flags in statfs64 when available., Laurent Vivier, 2020/10/26
- [PULL 4/8] linux-user: update mips/syscall-args-o32.c.inc to Linux 5.9-rc7, Laurent Vivier, 2020/10/26
- [PULL 1/8] Fix stack smashing when handling PR_GET_PDEATHSIG, Laurent Vivier, 2020/10/26
- [PULL 8/8] target/xtensa: enable all coprocessors for linux-user,
Laurent Vivier <=
- [PULL 5/8] linux-user: update syscall.tbl to Linux 5.9-rc7, Laurent Vivier, 2020/10/26
- [PULL 6/8] linux-user: remove _sysctl, Laurent Vivier, 2020/10/26
- [PULL 3/8] linux-user: update syscall_nr.h to Linux 5.9-rc7, Laurent Vivier, 2020/10/26
- [PULL 7/8] linux-user: correct errno returned from accept4() syscall, Laurent Vivier, 2020/10/26
- Re: [PULL 0/8] Linux user for 5.2 patches, Peter Maydell, 2020/10/28