Re: [tip: x86/asm] x86/asm: Make ASM_CALL_CONSTRAINT conditional on frame pointers
From: H. Peter Anvin
Date: Mon Mar 03 2025 - 21:05:33 EST
On March 3, 2025 4:57:49 PM PST, Andrew Cooper <andrew.cooper3@xxxxxxxxxx> wrote:
>> One more thing: if we remove ASM_CALL_CONSTRAINTS, we will not be able to use the redzone in future FRED only kernel builds.
>
>That's easy enough to fix with "|| CONFIG_FRED_EXCLUSIVE" in some
>theoretical future when it's a feasible config to use.
>
>~Andrew
Assuming it hasn't bitrotted...