13 Jun
2019
13 Jun
'19
12:28 p.m.
On Thu, Jun 13, 2019 at 12:37:32PM +0100, Dave P Martin wrote:
On Thu, Jun 13, 2019 at 11:15:34AM +0100, Vincenzo Frascino wrote:
On 12/06/2019 16:35, Catalin Marinas wrote:
On Wed, Jun 12, 2019 at 03:21:10PM +0100, Vincenzo Frascino wrote:
- PR_GET_TAGGED_ADDR_CTRL: can be used to check the status of the Tagged
Address ABI.
[...]
Is there a canonical way to detect whether this whole API/ABI is available? (i.e., try to call this prctl / check for an HWCAP bit, etc.)
The canonical way is a prctl() call. HWCAP doesn't make sense since it's not a hardware feature. If you really want a different way of detecting this (which I don't think it's worth), we can reinstate the AT_FLAGS bit.
--
Catalin