linux-user should always enable AFP, otherwise our emulated binary might crash once it tries to make use of additional floating-point registers or instructions.
Cc: Peter Maydell <peter.mayd...@linaro.org> Cc: Alex Bennée <alex.ben...@linaro.org> Fixes: db0504154e ("s390x/tcg: check for AFP-register, BFP and DFP data exceptions") Reported-by: Alex Bennée <alex.ben...@linaro.org> Signed-off-by: David Hildenbrand <da...@redhat.com> --- target/s390x/cpu.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/target/s390x/cpu.c b/target/s390x/cpu.c index 8ed4823d6e..18ba7f85a5 100644 --- a/target/s390x/cpu.c +++ b/target/s390x/cpu.c @@ -145,6 +145,11 @@ static void s390_cpu_full_reset(CPUState *s) env->cregs[0] = CR0_RESET; env->cregs[14] = CR14_RESET; +#if defined(CONFIG_USER_ONLY) + /* user mode should always be allowed to use the full FPU */ + env->cregs[0] |= CR0_AFP; +#endif + /* architectured initial value for Breaking-Event-Address register */ env->gbea = 1; -- 2.17.1