On Tue Feb 23, 2021 at 11:12 AM CST, Christophe Leroy wrote:
>
>
> Le 21/02/2021 à 02:23, Christopher M. Riedl a écrit :
> > Previously setup_sigcontext() performed a costly KUAP switch on every
> > uaccess operation. These repeated uaccess switches cause a significant
> > drop in signal handling p
Le 21/02/2021 à 02:23, Christopher M. Riedl a écrit :
Previously setup_sigcontext() performed a costly KUAP switch on every
uaccess operation. These repeated uaccess switches cause a significant
drop in signal handling performance.
Rewrite setup_sigcontext() to assume that a userspace write a
Previously setup_sigcontext() performed a costly KUAP switch on every
uaccess operation. These repeated uaccess switches cause a significant
drop in signal handling performance.
Rewrite setup_sigcontext() to assume that a userspace write access window
is open by replacing all uaccess functions wit
