Florian Fainelli 0a98764567 um: Allow building and running on older hosts ... Commit a78ff11122 ("um: add extended processor state save/restore support") and b6024b21fe ("um: extend fpstate to _xstate to support YMM registers") forced the use of the x86 FP _xstate and PTRACE_GETREGSET/SETREGSET. On older hosts, we would neither be able to build UML nor run it anymore with these two commits applied because we don't have definitions for struct _xstate nor these two ptrace requests. We can determine at build time which fp context structure to check against, just like we can keep using the old i387 fp save/restore if PTRACE_GETRESET/SETREGSET are not defined. Fixes: a78ff11122 ("um: add extended processor state save/restore support") Fixes: b6024b21fe ("um: extend fpstate to _xstate to support YMM registers") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Richard Weinberger <richard@nod.at>		2017-07-05 23:31:28 +02:00
..
Makefile	um: take arch/um/sys-x86 to arch/x86/um	2011-11-02 14:15:05 +01:00
mcontext.c	um: take arch/um/sys-x86 to arch/x86/um	2011-11-02 14:15:05 +01:00
prctl.c	x86/arch_prctl/64: Rename do_arch_prctl() to do_arch_prctl_64()	2017-03-20 16:10:32 +01:00
registers.c	um: Allow building and running on older hosts	2017-07-05 23:31:28 +02:00
task_size.c	um: use %lx format specifiers for unsigned longs	2016-03-05 22:21:28 +01:00
tls.c	um: get rid of pointless include "..." where include <...> will do	2012-10-09 22:28:45 +02:00