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SubjectRe: [PATCH 12/18] arm64: reserve x18 only with Shadow Call Stack
On Tue, Oct 22, 2019 at 05:00:10PM +0100, Mark Rutland wrote:
> If we wanted to, we could periodically grep for x18 to find any illicit
> usage.

Now we need objtool for arm64! :) (It seems CONFIG_HAVE_STACK_VALIDATION
is rather a narrow description for what objtool does now...)

Kees Cook

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