[src/trunk]: src/sys/arch/x86 Rename (the recently added) 'x86_xsave_size' to...

[dsl <dsl%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/0cfc40681f06
branches:  trunk
changeset: 793700:0cfc40681f06
user:      dsl <dsl%NetBSD.org@localhost>
date:      Sun Feb 23 22:38:40 2014 +0000

description:
Rename (the recently added) 'x86_xsave_size' to 'x86_fpu_save_size'
  and default to 512 (the size of the fxsave structure).

diffstat:

 sys/arch/x86/include/cpu.h     |  4 ++--
 sys/arch/x86/x86/identcpu.c    |  9 +++++----
 sys/arch/x86/x86/x86_machdep.c |  6 +++---
 3 files changed, 10 insertions(+), 9 deletions(-)

diffs (82 lines):

diff -r ca9dac66cb4b -r 0cfc40681f06 sys/arch/x86/include/cpu.h
--- a/sys/arch/x86/include/cpu.h        Sun Feb 23 22:36:43 2014 +0000
+++ b/sys/arch/x86/include/cpu.h        Sun Feb 23 22:38:40 2014 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: cpu.h,v 1.65 2014/02/23 12:56:40 dsl Exp $     */
+/*     $NetBSD: cpu.h,v 1.66 2014/02/23 22:38:40 dsl Exp $     */
 
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
@@ -387,7 +387,7 @@
 #define        FPU_SAVE_FXSAVE         1
 #define        FPU_SAVE_XSAVE          2
 #define        FPU_SAVE_XSAVEOPT       3
-extern unsigned int x86_xsave_size;
+extern unsigned int x86_fpu_save_size;
 extern uint64_t x86_xsave_features;
 
 extern void (*x86_cpu_idle)(void);
diff -r ca9dac66cb4b -r 0cfc40681f06 sys/arch/x86/x86/identcpu.c
--- a/sys/arch/x86/x86/identcpu.c       Sun Feb 23 22:36:43 2014 +0000
+++ b/sys/arch/x86/x86/identcpu.c       Sun Feb 23 22:38:40 2014 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: identcpu.c,v 1.41 2014/02/23 12:56:40 dsl Exp $        */
+/*     $NetBSD: identcpu.c,v 1.42 2014/02/23 22:38:40 dsl Exp $        */
 
 /*-
  * Copyright (c) 1999, 2000, 2001, 2006, 2007, 2008 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: identcpu.c,v 1.41 2014/02/23 12:56:40 dsl Exp $");
+__KERNEL_RCSID(0, "$NetBSD: identcpu.c,v 1.42 2014/02/23 22:38:40 dsl Exp $");
 
 #include "opt_xen.h"
 
@@ -61,7 +61,7 @@
 char cpu_brand_string[49];
 
 int x86_fpu_save = FPU_SAVE_FSAVE;
-unsigned int x86_xsave_size = 0;
+unsigned int x86_fpu_save_size = 512;
 uint64_t x86_xsave_features = 0;
 
 /*
@@ -756,7 +756,8 @@
        /* Get features and maximum size of the save area */
        x86_cpuid(0xd, descs);
        /* XXX these probably ought to be per-cpu */
-       x86_xsave_size = descs[2];
+       if (descs[2] > 512)
+           x86_fpu_save_size = descs[2];
        x86_xsave_features = (uint64_t)descs[3] << 32 | descs[0];
 }
 
diff -r ca9dac66cb4b -r 0cfc40681f06 sys/arch/x86/x86/x86_machdep.c
--- a/sys/arch/x86/x86/x86_machdep.c    Sun Feb 23 22:36:43 2014 +0000
+++ b/sys/arch/x86/x86/x86_machdep.c    Sun Feb 23 22:38:40 2014 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: x86_machdep.c,v 1.62 2014/02/23 12:56:40 dsl Exp $     */
+/*     $NetBSD: x86_machdep.c,v 1.63 2014/02/23 22:38:40 dsl Exp $     */
 
 /*-
  * Copyright (c) 2002, 2006, 2007 YAMAMOTO Takashi,
@@ -31,7 +31,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: x86_machdep.c,v 1.62 2014/02/23 12:56:40 dsl Exp $");
+__KERNEL_RCSID(0, "$NetBSD: x86_machdep.c,v 1.63 2014/02/23 22:38:40 dsl Exp $");
 
 #include "opt_modular.h"
 #include "opt_physmem.h"
@@ -1121,7 +1121,7 @@
        const_sysctl(clog, "sse2", i386_has_sse2, CPU_SSE2);
 
        const_sysctl(clog, "fpu_save", x86_fpu_save, CTL_CREATE);
-       const_sysctl(clog, "xsave_size", x86_xsave_size, CTL_CREATE);
+       const_sysctl(clog, "fpu_save_size", x86_fpu_save_size, CTL_CREATE);
        const_sysctl(clog, "xsave_features", x86_xsave_features, CTL_CREATE);
 
 #ifndef XEN