On 12.12.2018 13:23, Martin Husemann wrote: > On Wed, Dec 12, 2018 at 01:19:40PM +0100, Kamil Rytarowski wrote: >> Upstream (dvyukov) suggested to evaluate whether to use pointers always >> in 64bit types (uint64_t), as this way programs will be easier to reuse >> in 32bit mode on 64-bit kernel mode. > > I fail to parse that - can you give an example of what you mean? > > Martin > kcov returns kernel pointers, 32-bit program executed by 64-bit kernel cannot store them in 32-bit integers. It would need to detect real kernel ABI (and bypass constrains of emulation that fakes it) and handle 32 and 64-bit integers. Switching to 64-bit integers only makes handling of kcov traces in all scenarios easier.
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