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From: | Richard Henderson |
Subject: | Re: [PATCH 2/3] linux-user/arm: Implement __kernel_cmpxchg with host atomics |
Date: | Tue, 22 Mar 2022 17:41:35 -0700 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.5.0 |
On 3/22/22 13:08, Laurent Vivier wrote:
I have removed this patch and the following one from the branch because it hangs when executed in an armhf/bionic chroot the following example:cat > /tmp/hello.go <<EOF package main import "fmt" func main() { fmt.Println("Hello Google!") } EOF go run /tmp/hello.go
I don't see a hang. I see a SIGBUS, due to a silly typo here:
+static void arm_kernel_cmpxchg32_helper(CPUARMState *env) +{ + uint32_t oldval, newval, val, addr, cpsr, *host_addr; + + oldval = env->regs[0]; + newval = env->regs[1]; + addr = env->regs[2]; + + mmap_lock();+ host_addr = atomic_mmu_lookup(env, addr, 8);
s/8/4/. r~
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