From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50741) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Vp5ag-0000H8-PS for qemu-devel@nongnu.org; Fri, 06 Dec 2013 19:17:55 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Vp5ab-0008F6-NK for qemu-devel@nongnu.org; Fri, 06 Dec 2013 19:17:50 -0500 Received: from mga01.intel.com ([192.55.52.88]:28548) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Vp5ab-0008Eq-HW for qemu-devel@nongnu.org; Fri, 06 Dec 2013 19:17:45 -0500 From: Qiaowei Ren Date: Sat, 7 Dec 2013 15:32:43 +0800 Message-Id: <1386401563-3609-1-git-send-email-qiaowei.ren@intel.com> Subject: [Qemu-devel] [PATCH v3 3/3] X86, mpx: Intel MPX xstate feature definition List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Paolo Bonzini , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , x86@kernel.org Cc: Liu Jinsong , kvm@vger.kernel.org, Xudong Hao , linux-kernel@vger.kernel.org, qemu-devel@nongnu.org, Qiaowei Ren This patch defines xstate feature and extends struct xsave_hdr_struct to support Intel MPX. Signed-off-by: Qiaowei Ren Signed-off-by: Xudong Hao Signed-off-by: Liu Jinsong --- arch/x86/include/asm/processor.h | 12 ++++++++++++ arch/x86/include/asm/xsave.h | 6 +++++- 2 files changed, 17 insertions(+), 1 deletions(-) diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index 987c75e..2fe2e75 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -370,6 +370,15 @@ struct ymmh_struct { u32 ymmh_space[64]; }; +struct bndregs_struct { + u64 bndregs[8]; +} __packed; + +struct bndcsr_struct { + u64 cfg_reg_u; + u64 status_reg; +} __packed; + struct xsave_hdr_struct { u64 xstate_bv; u64 reserved1[2]; @@ -380,6 +389,9 @@ struct xsave_struct { struct i387_fxsave_struct i387; struct xsave_hdr_struct xsave_hdr; struct ymmh_struct ymmh; + u8 lwp_area[128]; + struct bndregs_struct bndregs; + struct bndcsr_struct bndcsr; /* new processor state extensions will go here */ } __attribute__ ((packed, aligned (64))); diff --git a/arch/x86/include/asm/xsave.h b/arch/x86/include/asm/xsave.h index 0415cda..5cd9de3 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 +22,12 @@ #define XSAVE_YMM_SIZE 256 #define XSAVE_YMM_OFFSET (XSAVE_HDR_SIZE + XSAVE_HDR_OFFSET) +#define XSTATE_FLEXIBLE (XSTATE_FP | XSTATE_SSE | XSTATE_YMM) +#define XSTATE_EAGER (XSTATE_BNDREGS | XSTATE_BNDCSR) /* * These are the features that the OS can handle currently. */ -#define XCNTXT_MASK (XSTATE_FP | XSTATE_SSE | XSTATE_YMM) +#define XCNTXT_MASK (XSTATE_FLEXIBLE | XSTATE_EAGER) #ifdef CONFIG_X86_64 #define REX_PREFIX "0x48, " -- 1.7.1