What's in a name?

Posted Jul 26, 2024 16:03 UTC (Fri) by intelfx (subscriber, #130118)
Parent article: May the FOLL_FORCE not be with you

I'll bite. What does FOLL_ stand for, anyway?

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What's in a name?

Posted Jul 26, 2024 16:26 UTC (Fri) by abatters (✭ supporter ✭, #6932) [Link] (3 responses)

"Follow", as in the prefix of bitwise-or flag arguments passed to follow_page(), the kernel function that uses page tables to lookup a struct page * given a struct vma and a virtual address.

What's in a name?

Posted Jul 26, 2024 18:26 UTC (Fri) by nickodell (subscriber, #125165) [Link] (1 responses)

What does FORCE stand for? What check is being ignored?

What's in a name?

Posted Jul 26, 2024 19:36 UTC (Fri) by pbonzini (subscriber, #60935) [Link]

> That flag causes the write to succeed, regardless of whether the normal memory protections at the target address would allow writing

What's in a name?

Posted Jul 27, 2024 11:33 UTC (Sat) by intelfx (subscriber, #130118) [Link]

> follow_page()

Ah, so that’s what was under all those turtles!

Thanks.