On Wed, Jul 14, 2021 at 09:40:15AM +0100, Russell King (Oracle) wrote:

On Tue, Jul 13, 2021 at 07:13:02PM +0100, Catalin Marinas wrote:

...

We could try to clarify E2.2.1 to simply state that naturally aligned LDRD/STRD are single-copy atomic without any subsequent statement on the translation table.

I think that clarification would be most helpful. Thanks.

Thanks for the suggestion and confirmation, Russell & Catalin.

If so, I will implement the weak functions for compat_auxtrace_mmap__{read_head|write_tail}; and write the arm/arm64 specific functions with using LDRD/STRD instructions.

For better patches organization, I will use a separate patch set for enabling the compat functions (in particular patches 10, 11/11) in the next spin.

Thanks, Leo