[aarch64-port-dev ] [Roland Westrelin] Re: Aarch64 port for ZGC, so far

[Per Liden]

On 04/15/2019 05:25 PM, Andrew Haley wrote:
> On 4/15/19 3:57 PM, Stuart Monteith wrote:
>>     If I understand this correctly, siginfo_t would contain the
>> faulting address with the tag wiped. The ucontext would still contain
>> the full 64-bit registers, unmolested. I've asked internally, but that
>> is how I've interpreted it.
> 
> That sounds sensible.

Also note that depending on what this oop is used for in the signal 
handler, you might not need the tag bits (they typically are only useful 
for ZGC). But if you really do need them, you can call 
ZAddress::good(oop) to slap the bits on again.

cheers,
Per