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base-foc: warn if 'acknowledge_exception' fails

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Issue #2594
This commit is contained in:
Martin Stein 2017-11-29 13:15:52 +01:00 committed by Christian Helmuth
parent 8808b99cc5
commit 703a013b60
1 changed files with 9 additions and 1 deletions
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10
repos/base-foc/src/core/ipc_pager.cc
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@ -135,7 +135,15 @@ void Ipc_pager::acknowledge_exception()
{
memcpy(l4_utcb_exc(), &_regs, sizeof(l4_exc_regs_t));
l4_cap_idx_t dst = Fiasco::Capability::valid(_last.kcap) ? _last.kcap : L4_SYSF_REPLY;
l4_ipc_send(dst, l4_utcb(), l4_msgtag(0, L4_UTCB_EXCEPTION_REGS_SIZE, 0, 0), L4_IPC_SEND_TIMEOUT_0);
Fiasco::l4_msgtag_t const msg_tag =
l4_ipc_send(dst, l4_utcb(),
l4_msgtag(0, L4_UTCB_EXCEPTION_REGS_SIZE, 0, 0),
L4_IPC_SEND_TIMEOUT_0);
Fiasco::l4_umword_t const err = l4_ipc_error(msg_tag, l4_utcb());
if (err) {
warning("failed to acknowledge exception, l4_ipc_err=", err);
}
}