linux/arch/um
Eli Cooper a78ff11122 um: add extended processor state save/restore support
This patch extends save_fp_registers() and restore_fp_registers() to use
PTRACE_GETREGSET and PTRACE_SETREGSET with the XSTATE note type, adding
support for new processor state extensions between context switches.

When the new ptrace requests are unavailable, it falls back to the old
PTRACE_GETFPREGS and PTRACE_SETFPREGS methods, which have been renamed to
save_i387_registers() and restore_i387_registers().

Now these functions expect *fp_regs to have the space of an _xstate struct.
Thus, this also makes ptrace in UML responde to PTRACE_GETFPREGS/_SETFPREG
requests with a user_i387_struct (thus independent from HOST_FP_SIZE), and
by calling save_i387_registers() and restore_i387_registers() instead of
the extended save_fp_registers() and restore_fp_registers() functions.

Signed-off-by: Eli Cooper <elicooper@gmx.com>
2016-05-21 23:38:06 +02:00
..
configs arch/um: make it work with defconfig and x86_64 2013-11-17 11:31:48 +01:00
drivers fs/coredump: prevent fsuid=0 dumps into user-controlled directories 2016-03-22 15:36:02 -07:00
include um: add extended processor state save/restore support 2016-05-21 23:38:06 +02:00
kernel um: add extended processor state save/restore support 2016-05-21 23:38:06 +02:00
os-Linux um: extend fpstate to _xstate to support YMM registers 2016-05-21 23:37:40 +02:00
scripts
.gitignore
Kconfig.char um: remove used STDIO_CONSOLE Kconfig param 2013-11-17 11:32:27 +01:00
Kconfig.common um: Add seccomp support 2016-01-10 21:49:49 +01:00
Kconfig.debug
Kconfig.net arch/um: remove depends on CONFIG_EXPERIMENTAL 2013-01-11 11:38:04 -08:00
Kconfig.rest
Kconfig.um um: Add seccomp support 2016-01-10 21:49:49 +01:00
Makefile arch: um: fix error when linking vmlinux. 2015-12-08 22:25:13 +01:00
Makefile-os-Linux
Makefile-skas