On Sat, Apr 14, 2012 at 3:42 PM, Mark Kettenis <mark.kette...@xs4all.nl> wrote: >> > some software needs fully functional per-thread %gs base address, >> > hence the diff. limited testing shows no regressions. >> > INTR_RESTORE_SELECTORS changes include: >> > - %r11 is used to store curpcb instead of rdx that is used for >> > wrmsr and gets trashed (it's safe to use %r11 because it's >> > restored after INTR_RESTORE_SELECTORS gets called); >> > >> > - MSR_KERNELGSBASE needs to be updated instead of MSR_GSBASE >> > so that we don't lose kernel gs.base stored in MSR_GSBASE >> > and swapped by the swapgs. >> > >> > any objections? corrections? > > Ugh, I meant to ask, which software needs this? >
as i said openmcl (aka clozurecl aka ccl) needs it: http://trac.clozure.com/ccl/browser/release/1.8/source/lisp-kernel/thread_man ager.c#L881
