On Tue, May 22, 2018 at 04:06:41PM +0100, Marc Zyngier wrote:
> In order to avoid checking arm64_ssbd_callback_required on each
> kernel entry/exit even if no mitigation is required, let's
> add yet another alternative that by default jumps over the mitigation,
> and that gets nop'ed out if we're d
Hi Marc,
On 05/22/2018 04:06 PM, Marc Zyngier wrote:
In order to avoid checking arm64_ssbd_callback_required on each
kernel entry/exit even if no mitigation is required, let's
add yet another alternative that by default jumps over the mitigation,
and that gets nop'ed out if we're doing dynamic m
In order to avoid checking arm64_ssbd_callback_required on each
kernel entry/exit even if no mitigation is required, let's
add yet another alternative that by default jumps over the mitigation,
and that gets nop'ed out if we're doing dynamic mitigation.
Think of it as a poor man's static key...
S
