RFR (XS): 8139558 [JVMCI] SPARC hits: guarantee(heap_end < allocation_end) failed: heap end too close to end of address space (might lead to erroneous TLAB allocations)

[Vladimir Kozlov]

Okay. I saw this fix in JVMCI refresh changes.

Thanks,
Vladimir

On 10/14/15 3:02 AM, Christian Thalinger wrote:
> https://bugs.openjdk.java.net/browse/JDK-8139558
>
> This assert can trigger trivially on SPARC so we have to disable it.
>
> diff -r 0ca52fb7d980 src/share/vm/jvmci/jvmciRuntime.cpp
> --- a/src/share/vm/jvmci/jvmciRuntime.cppTue Sep 29 17:01:37 2015 +0000
> +++ b/src/share/vm/jvmci/jvmciRuntime.cppTue Oct 13 09:02:29 2015 -1000
> @@ -778,9 +778,11 @@ JVM_ENTRY(void, JVM_RegisterJVMCINatives
>     }
>
>
>   #ifdef _LP64
> +#ifndef TARGET_ARCH_sparc
>     uintptr_t heap_end = (uintptr_t)
> Universe::heap()->reserved_region().end();
>     uintptr_t allocation_end = heap_end + ((uintptr_t)16) * 1024 * 1024
> * 1024;
>     guarantee(heap_end < allocation_end, "heap end too close to end of
> address space (might lead to erroneous TLAB allocations)");
> +#endif // TARGET_ARCH_sparc
>   #else
>     fatal("check TLAB allocation code for address space conflicts");
>   #endif
>