x86, AVX-512: Enable AVX-512 States Context Switch

This patch enables Opmask, ZMM_Hi256, and Hi16_ZMM AVX-512 states for
xstate context switch.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Link: http://lkml.kernel.org/r/1392931491-33237-2-git-send-email-fenghua.yu@intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: <stable@vger.kernel.org> # hw enabling

diff --git a/arch/x86/include/asm/xsave.h b/arch/x86/include/asm/xsave.h
index 5547389..6c1d741 100644 (file)
--- a/arch/x86/include/asm/xsave.h
+++ b/arch/x86/include/asm/xsave.h
@@ -6,11 +6,14 @@
 
 #define XSTATE_CPUID           0x0000000d
 
-#define XSTATE_FP      0x1
-#define XSTATE_SSE     0x2
-#define XSTATE_YMM     0x4
-#define XSTATE_BNDREGS 0x8
-#define XSTATE_BNDCSR  0x10
+#define XSTATE_FP              0x1
+#define XSTATE_SSE             0x2
+#define XSTATE_YMM             0x4
+#define XSTATE_BNDREGS         0x8
+#define XSTATE_BNDCSR          0x10
+#define XSTATE_OPMASK          0x20
+#define XSTATE_ZMM_Hi256       0x40
+#define XSTATE_Hi16_ZMM                0x80
 
 #define XSTATE_FPSSE   (XSTATE_FP | XSTATE_SSE)
 
@@ -23,7 +26,8 @@
 #define XSAVE_YMM_OFFSET    (XSAVE_HDR_SIZE + XSAVE_HDR_OFFSET)
 
 /* Supported features which support lazy state saving */
-#define XSTATE_LAZY    (XSTATE_FP | XSTATE_SSE | XSTATE_YMM)
+#define XSTATE_LAZY    (XSTATE_FP | XSTATE_SSE | XSTATE_YMM                  \
+                       | XSTATE_OPMASK | XSTATE_ZMM_Hi256 | XSTATE_Hi16_ZMM)
 
 /* Supported features which require eager state saving */
 #define XSTATE_EAGER   (XSTATE_BNDREGS | XSTATE_BNDCSR)