6.828
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Published 20 hours ago •

houminz

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MIT 6.828 JOS lab

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sys_ipc_try_send: set return value for sys_ipc_recv

The function is here: https://github.com/SimpCosm/6.828/blob/6a0a24dce33484f545f7a883b9b99fc190f25c3f/lab4/code/kern/syscall.c#L314-L357 I think you need `e->env_tf.tf_regs.reg_eax = 0;`. This makes sure that the _sys_ipc_recv_ called by destination Env returns 0 on success IPC.

HeyiSun