On 05/23/2018 05:06 PM, Linus Torvalds wrote:
On Wed, May 23, 2018, 17:01 Andy Lutomirski <[email protected] <mailto:[email protected]>> wrote: I don’t know whether I’m missing something obvious, but can’t this be in C? Yes, but I thought Laura wanted to limit it to linker file tricks (this thread has gone on for so long that I've forgotten the details of why). Linus
So we have to update the kernel and every module and the easiest way to do that was the linker script. I was assuming I'd just use the same approach for the vDSO but you're right that there's no reason we can't apply a different technique. I notice there's already a vdso-note.S which adds LINUX_VERSION_CODE as a note. This doesn't include the extra version so it doesn't quite meet our needs. There's no reason why we can't throw something else in there for good measure. Thanks, Laura
