On 8/24/2020 5:33 PM, Andy Lutomirski wrote:
On Mon, Aug 24, 2020 at 5:30 PM Yu-cheng Yu <[email protected]> wrote:

From: "H.J. Lu" <[email protected]>

When Indirect Branch Tracking (IBT) is enabled, vDSO functions may be
called indirectly, and must have ENDBR32 or ENDBR64 as the first
instruction.  The compiler must support -fcf-protection=branch so that it
can be used to compile vDSO.

Signed-off-by: H.J. Lu <[email protected]>
Signed-off-by: Yu-cheng Yu <[email protected]>
Acked-by: Andy Lutomirski <[email protected]>

I revoke my Ack.  Please don't repeat the list of object files.  Maybe
add the option to CFL?

I will update the patch.

Yu-cheng

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