KVM: x86: Fix xsave cpuid exposing bug

[deliverable/linux.git] / arch / x86 / include / asm / xsave.h

diff --git a/arch/x86/include/asm/xsave.h b/arch/x86/include/asm/xsave.h
index 554738963b28cf47dd76fa9947338bb1eae5a0d0..dcd047b629ec044655ff5963f00aa60134e655de 100644 (file)
--- a/arch/x86/include/asm/xsave.h
+++ b/arch/x86/include/asm/xsave.h
@@ -13,6 +13,8 @@
 #define XSTATE_BNDCSR  0x10
 
 #define XSTATE_FPSSE   (XSTATE_FP | XSTATE_SSE)
+/* Bit 63 of XCR0 is reserved for future expansion */
+#define XSTATE_EXTEND_MASK     (~(XSTATE_FPSSE | (1ULL << 63)))
 
 #define FXSAVE_SIZE    512