x86/fpu: Move asm/xcr.h to asm/fpu/internal.h

Now that all FPU internals using drivers are converted to public APIs, move xcr.h's definitions into fpu/internal.h and remove xcr.h. Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org>
git-mirror · May 19, 2015 · befc61a · befc61a
1 parent 57dd083
commit befc61a
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Showing 5 changed files with 25 additions and 52 deletions.
diff --git a/arch/x86/include/asm/fpu/internal.h b/arch/x86/include/asm/fpu/internal.h
@@ -430,6 +430,31 @@ static inline void fpu_reset_state(struct fpu *fpu)
 		restore_init_xstate();
 }
 
+/*
+ * Definitions for the eXtended Control Register instructions
+ */
+
+#define XCR_XFEATURE_ENABLED_MASK	0x00000000
+
+static inline u64 xgetbv(u32 index)
+{
+	u32 eax, edx;
+
+	asm volatile(".byte 0x0f,0x01,0xd0" /* xgetbv */
+		     : "=a" (eax), "=d" (edx)
+		     : "c" (index));
+	return eax + ((u64)edx << 32);
+}
+
+static inline void xsetbv(u32 index, u64 value)
+{
+	u32 eax = value;
+	u32 edx = value >> 32;
+
+	asm volatile(".byte 0x0f,0x01,0xd1" /* xsetbv */
+		     : : "a" (eax), "d" (edx), "c" (index));
+}
+
 /*
  * FPU state switching for scheduling.
  *

diff --git a/arch/x86/include/asm/xcr.h b/arch/x86/include/asm/xcr.h
diff --git a/arch/x86/kernel/fpu/xstate.c b/arch/x86/kernel/fpu/xstate.c
@@ -9,7 +9,6 @@
 #include <asm/fpu/internal.h>
 #include <asm/sigframe.h>
 #include <asm/tlbflush.h>
-#include <asm/xcr.h>
 
 static const char *xfeature_names[] =
 {

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
@@ -41,7 +41,6 @@
 #include <asm/virtext.h>
 #include <asm/mce.h>
 #include <asm/fpu/internal.h>
-#include <asm/xcr.h>
 #include <asm/perf_event.h>
 #include <asm/debugreg.h>
 #include <asm/kexec.h>

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
@@ -61,7 +61,6 @@
 #include <asm/mce.h>
 #include <linux/kernel_stat.h>
 #include <asm/fpu/internal.h> /* Ugh! */
-#include <asm/xcr.h>
 #include <asm/pvclock.h>
 #include <asm/div64.h>