Il 02/12/2013 17:42, Liu, Jinsong ha scritto:
> From 1a199d68265ffeb0234530f29d92a00a5edeff75 Mon Sep 17 00:00:00 2001
> From: Liu Jinsong <jinsong.liu@xxxxxxxxx>
> Date: Tue, 3 Dec 2013 05:08:19 +0800
> Subject: [PATCH 2/2] target-i386: Intel MPX
>
> Add some MPX related definiation, and hardcode sizes and offsets
> of xsave features 3 and 4.
>
> Signed-off-by: Liu Jinsong <jinsong.liu@xxxxxxxxx>
kvm_get/put_xsave support is still missing.
> ---
> target-i386/cpu.c | 4 ++++
> target-i386/cpu.h | 10 +++++++---
> 2 files changed, 11 insertions(+), 3 deletions(-)
>
> diff --git a/target-i386/cpu.c b/target-i386/cpu.c
> index 544b57f..52ca029 100644
> --- a/target-i386/cpu.c
> +++ b/target-i386/cpu.c
> @@ -336,6 +336,10 @@ typedef struct ExtSaveArea {
> static const ExtSaveArea ext_save_areas[] = {
> [2] = { .feature = FEAT_1_ECX, .bits = CPUID_EXT_AVX,
> .offset = 0x240, .size = 0x100 },
> + [3] = { .feature = FEAT_7_0_EBX, .bits = CPUID_7_0_EBX_MPX,
> + .offset = 0x3c0, .size = 0x40 },
> + [4] = { .feature = FEAT_7_0_EBX, .bits = CPUID_7_0_EBX_MPX,
> + .offset = 0x400, .size = 0x10 },
> };
>
> const char *get_register_name_32(unsigned int reg)
> diff --git a/target-i386/cpu.h b/target-i386/cpu.h
> index ea373e8..2975644 100644
> --- a/target-i386/cpu.h
> +++ b/target-i386/cpu.h
> @@ -380,9 +380,12 @@
>
> #define MSR_VM_HSAVE_PA 0xc0010117
>
> -#define XSTATE_FP 1
> -#define XSTATE_SSE 2
> -#define XSTATE_YMM 4
> +#define XSTATE_FP (1ULL << 0)
> +#define XSTATE_SSE (1ULL << 1)
> +#define XSTATE_YMM (1ULL << 2)
> +#define XSTATE_BNDREGS (1ULL << 3)
> +#define XSTATE_BNDCSR (1ULL << 4)
> +
>
> /* CPUID feature words */
> typedef enum FeatureWord {
> @@ -545,6 +548,7 @@ typedef uint32_t FeatureWordArray[FEATURE_WORDS];
> #define CPUID_7_0_EBX_ERMS (1 << 9)
> #define CPUID_7_0_EBX_INVPCID (1 << 10)
> #define CPUID_7_0_EBX_RTM (1 << 11)
> +#define CPUID_7_0_EBX_MPX (1 << 14)
> #define CPUID_7_0_EBX_RDSEED (1 << 18)
> #define CPUID_7_0_EBX_ADX (1 << 19)
> #define CPUID_7_0_EBX_SMAP (1 << 20)
>
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