[llvm-bugs] [Bug 43912] New: implement -fpatchable-function-entry

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=43912

            Bug ID: 43912
           Summary: implement -fpatchable-function-entry
           Product: clang
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: C
          Assignee: unassignedclangbugs at nondot.org
          Reporter: ndesaulniers at google.com
                CC: blitzrakete at gmail.com, dgregor at apple.com,
                    erik.pilkington at gmail.com, isanbard at gmail.com,
                    llozano at chromium.org, llvm-bugs at lists.llvm.org,
                    richard-llvm at metafoo.co.uk, srhines at google.com
            Blocks: 4068

Looks like the Linux kernel makes use of the `-fpatchable-function-entry`
command line flag to support yet another form of runtime patching.

https://lkml.org/lkml/2019/10/29/811


Looks like a cfe-dev post about this back in Jan:
http://clang-developers.42468.n3.nabble.com/fpatchable-function-entry-flag-td4063441.html


Referenced Bugs:

https://bugs.llvm.org/show_bug.cgi?id=4068
[Bug 4068] [Meta] Compiling the Linux kernel with clang
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