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Diffstat (limited to 'arch/x86/include/asm/xsave.h')
-rw-r--r--arch/x86/include/asm/xsave.h14
1 files changed, 10 insertions, 4 deletions
diff --git a/arch/x86/include/asm/xsave.h b/arch/x86/include/asm/xsave.h
index 0415cdabb5a6..554738963b28 100644
--- a/arch/x86/include/asm/xsave.h
+++ b/arch/x86/include/asm/xsave.h
@@ -9,6 +9,8 @@
#define XSTATE_FP 0x1
#define XSTATE_SSE 0x2
#define XSTATE_YMM 0x4
+#define XSTATE_BNDREGS 0x8
+#define XSTATE_BNDCSR 0x10
#define XSTATE_FPSSE (XSTATE_FP | XSTATE_SSE)
@@ -20,10 +22,14 @@
#define XSAVE_YMM_SIZE 256
#define XSAVE_YMM_OFFSET (XSAVE_HDR_SIZE + XSAVE_HDR_OFFSET)
-/*
- * These are the features that the OS can handle currently.
- */
-#define XCNTXT_MASK (XSTATE_FP | XSTATE_SSE | XSTATE_YMM)
+/* Supported features which support lazy state saving */
+#define XSTATE_LAZY (XSTATE_FP | XSTATE_SSE | XSTATE_YMM)
+
+/* Supported features which require eager state saving */
+#define XSTATE_EAGER (XSTATE_BNDREGS | XSTATE_BNDCSR)
+
+/* All currently supported features */
+#define XCNTXT_MASK (XSTATE_LAZY | XSTATE_EAGER)
#ifdef CONFIG_X86_64
#define REX_PREFIX "0x48, "