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8213436: Obsolete UseMembar

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Reviewed-by: kvn, dholmes, mdoerr, adinn
This commit is contained in:
Mikael Vidstedt 2018-11-08 11:45:13 -08:00
parent 38a1e5ffbc
commit f69921f2fc
57 changed files with 43 additions and 655 deletions
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13
src/hotspot/os_cpu/linux_s390/os_linux_s390.cpp
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@ -477,19 +477,6 @@ JVM_handle_linux_signal(int sig,
return true;
}
}
// Check to see if we caught the safepoint code in the
// process of write protecting the memory serialization page.
// It write enables the page immediately after protecting it
// so we can just return to retry the write.
// Info->si_addr need not be the exact address, it is only
// guaranteed to be on the same page as the address that caused
// the SIGSEGV.
if ((sig == SIGSEGV) && !UseMembar &&
(os::get_memory_serialize_page() ==
(address)((uintptr_t)info->si_addr & ~(os::vm_page_size()-1)))) {
return true;
}
}
if (stub != NULL) {