[Bug libgcc/91053] __builtin___clear_cache can fail

[oth+gccbugs at google dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91053

--- Comment #2 from Orion Hodson  ---
For sure the goal wasn't to suggest that this was due to a privileged
operation.

[Bug libgcc/91053] __builtin___clear_cache can fail

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91053

--- Comment #1 from Andrew Pinski  ---
So was reading the code.  The only time a fault will happen when a page is not
mapped in.  This happens if the page was paged out (this is why it happens
under heavily pressure).  This is not about being privileged at all.