Re: [RFC][PATCH] linux-2.6.4-pre1_vsyscall-gtod_B3-part3 (3/3)

Andrea Arcangeli
2004-03-04T03:15:24Z

On Wed, Mar 03, 2004 at 06:54:49PM -0800, john stultz wrote:
> On Wed, 2004-03-03 at 18:47, Andrea Arcangeli wrote:
> > And sysenter is at a fixed address in 2.6 x86 too (it doesn't even
> > change between different kernel compiles).
>
> Actually, the 4G patch pushes vsysenter down a page, and glibc seems to
> handle this properly.

this is nice for x86 indeed. This has never been a concern in x86-64
since there's no need to move the address space there.

so in short this means 64G machines using 4:4 will need two tries to get
to the root shell, every bother box will succeed at the first try ;).