RE: [PATCH] x86: fix early boot crash on gcc-10

From: David Laight
Date: Tue Mar 17 2020 - 12:35:53 EST


From: Borislav Petkov
> Sent: 17 March 2020 14:50
> On Tue, Mar 17, 2020 at 03:39:14PM +0100, Jakub Jelinek wrote:
> > That is because the option is called -fno-stack-protector, so one needs to
> > use __attribute__((optimize("no-stack-protector")))
>
> Ha, that works even! :-)
>
> And my guest boots.
>
> I guess we can do that then. Looks like the optimal solution to me.
>
> Also, I'm assuming older gccs will simply ignore unknown optimize
> options?


Unlikely since it rejected the misspelt one.

David

-
Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
Registration No: 1397386 (Wales)