diff mbox series

[v3,2/5] x86/hyperv: Add VTL specific structs and hypercalls

Message ID 1679306618-31484-3-git-send-email-ssengar@linux.microsoft.com
State New
Headers
Series Hyper-V VTL support |

Commit Message

Saurabh Singh Sengar March 20, 2023, 10:03 a.m. UTC 
  Add structs and hypercalls required to enable VTL support on x86.

Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com>
---
 arch/x86/include/asm/hyperv-tlfs.h | 75 ++++++++++++++++++++++++++++++
 include/asm-generic/hyperv-tlfs.h  |  4 ++
 2 files changed, 79 insertions(+)

Comments

Michael Kelley (LINUX) March 26, 2023, 3:05 p.m. UTC | #1 
From: Saurabh Sengar <ssengar@linux.microsoft.com> Sent: Monday, March 20, 2023 3:04 AM
> 
> Add structs and hypercalls required to enable VTL support on x86.
> 
> Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com>
> ---
>  arch/x86/include/asm/hyperv-tlfs.h | 75 ++++++++++++++++++++++++++++++
>  include/asm-generic/hyperv-tlfs.h  |  4 ++
>  2 files changed, 79 insertions(+)
> 
> diff --git a/arch/x86/include/asm/hyperv-tlfs.h b/arch/x86/include/asm/hyperv-tlfs.h
> index 0b73a809e9e1..0b0b4e9a4318 100644
> --- a/arch/x86/include/asm/hyperv-tlfs.h
> +++ b/arch/x86/include/asm/hyperv-tlfs.h
> @@ -713,6 +713,81 @@ union hv_msi_entry {
>  	} __packed;
>  };
> 
> +struct hv_x64_segment_register {
> +	__u64 base;
> +	__u32 limit;
> +	__u16 selector;
> +	union {
> +		struct {
> +			__u16 segment_type : 4;
> +			__u16 non_system_segment : 1;
> +			__u16 descriptor_privilege_level : 2;
> +			__u16 present : 1;
> +			__u16 reserved : 4;
> +			__u16 available : 1;
> +			__u16 _long : 1;
> +			__u16 _default : 1;
> +			__u16 granularity : 1;
> +		} __packed;
> +		__u16 attributes;
> +	};
> +} __packed;
> +
> +struct hv_x64_table_register {
> +	__u16 pad[3];
> +	__u16 limit;
> +	__u64 base;
> +} __packed;
> +
> +struct hv_init_vp_context {
> +	u64 rip;
> +	u64 rsp;
> +	u64 rflags;
> +
> +	struct hv_x64_segment_register cs;
> +	struct hv_x64_segment_register ds;
> +	struct hv_x64_segment_register es;
> +	struct hv_x64_segment_register fs;
> +	struct hv_x64_segment_register gs;
> +	struct hv_x64_segment_register ss;
> +	struct hv_x64_segment_register tr;
> +	struct hv_x64_segment_register ldtr;
> +
> +	struct hv_x64_table_register idtr;
> +	struct hv_x64_table_register gdtr;
> +
> +	u64 efer;
> +	u64 cr0;
> +	u64 cr3;
> +	u64 cr4;
> +	u64 msr_cr_pat;
> +} __packed;
> +
> +union hv_input_vtl {
> +	u8 as_uint8;
> +	struct {
> +		u8 target_vtl: 4;
> +		u8 use_target_vtl: 1;
> +		u8 reserved_z: 3;
> +	};
> +} __packed;
> +
> +struct hv_enable_vp_vtl {
> +	u64				partition_id;
> +	u32				vp_index;
> +	union hv_input_vtl		target_vtl;
> +	u8				mbz0;
> +	u16				mbz1;
> +	struct hv_init_vp_context	vp_context;
> +} __packed;
> +
> +struct hv_get_vp_from_apic_id_in {
> +	u64 partition_id;
> +	union hv_input_vtl target_vtl;
> +	u8 res[7];
> +	u32 apic_ids[];
> +} __packed;
> +
>  #include <asm-generic/hyperv-tlfs.h>
> 
>  #endif
> diff --git a/include/asm-generic/hyperv-tlfs.h b/include/asm-generic/hyperv-tlfs.h
> index b870983596b9..87258341fd7c 100644
> --- a/include/asm-generic/hyperv-tlfs.h
> +++ b/include/asm-generic/hyperv-tlfs.h
> @@ -146,6 +146,7 @@ union hv_reference_tsc_msr {
>  /* Declare the various hypercall operations. */
>  #define HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE	0x0002
>  #define HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST	0x0003
> +#define HVCALL_ENABLE_VP_VTL			0x000f
>  #define HVCALL_NOTIFY_LONG_SPIN_WAIT		0x0008
>  #define HVCALL_SEND_IPI				0x000b
>  #define HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE_EX	0x0013
> @@ -165,6 +166,8 @@ union hv_reference_tsc_msr {
>  #define HVCALL_MAP_DEVICE_INTERRUPT		0x007c
>  #define HVCALL_UNMAP_DEVICE_INTERRUPT		0x007d
>  #define HVCALL_RETARGET_INTERRUPT		0x007e
> +#define HVCALL_START_VP				0x0099
> +#define HVCALL_GET_VP_ID_FROM_APIC_ID		0x009a
>  #define HVCALL_FLUSH_GUEST_PHYSICAL_ADDRESS_SPACE 0x00af
>  #define HVCALL_FLUSH_GUEST_PHYSICAL_ADDRESS_LIST 0x00b0
>  #define HVCALL_MODIFY_SPARSE_GPA_PAGE_HOST_VISIBILITY 0x00db
> @@ -218,6 +221,7 @@ enum HV_GENERIC_SET_FORMAT {
>  #define HV_STATUS_INVALID_PORT_ID		17
>  #define HV_STATUS_INVALID_CONNECTION_ID		18
>  #define HV_STATUS_INSUFFICIENT_BUFFERS		19
> +#define HV_STATUS_VTL_ALREADY_ENABLED		134
> 
>  /*
>   * The Hyper-V TimeRefCount register and the TSC
> --
> 2.34.1

Reviewed-by: Michael Kelley <mikelley@microsoft.com>
diff mbox series

Patch

diff --git a/arch/x86/include/asm/hyperv-tlfs.h b/arch/x86/include/asm/hyperv-tlfs.h
index 0b73a809e9e1..0b0b4e9a4318 100644
--- a/arch/x86/include/asm/hyperv-tlfs.h
+++ b/arch/x86/include/asm/hyperv-tlfs.h
@@ -713,6 +713,81 @@  union hv_msi_entry {
 	} __packed;
 };
 
+struct hv_x64_segment_register {
+	__u64 base;
+	__u32 limit;
+	__u16 selector;
+	union {
+		struct {
+			__u16 segment_type : 4;
+			__u16 non_system_segment : 1;
+			__u16 descriptor_privilege_level : 2;
+			__u16 present : 1;
+			__u16 reserved : 4;
+			__u16 available : 1;
+			__u16 _long : 1;
+			__u16 _default : 1;
+			__u16 granularity : 1;
+		} __packed;
+		__u16 attributes;
+	};
+} __packed;
+
+struct hv_x64_table_register {
+	__u16 pad[3];
+	__u16 limit;
+	__u64 base;
+} __packed;
+
+struct hv_init_vp_context {
+	u64 rip;
+	u64 rsp;
+	u64 rflags;
+
+	struct hv_x64_segment_register cs;
+	struct hv_x64_segment_register ds;
+	struct hv_x64_segment_register es;
+	struct hv_x64_segment_register fs;
+	struct hv_x64_segment_register gs;
+	struct hv_x64_segment_register ss;
+	struct hv_x64_segment_register tr;
+	struct hv_x64_segment_register ldtr;
+
+	struct hv_x64_table_register idtr;
+	struct hv_x64_table_register gdtr;
+
+	u64 efer;
+	u64 cr0;
+	u64 cr3;
+	u64 cr4;
+	u64 msr_cr_pat;
+} __packed;
+
+union hv_input_vtl {
+	u8 as_uint8;
+	struct {
+		u8 target_vtl: 4;
+		u8 use_target_vtl: 1;
+		u8 reserved_z: 3;
+	};
+} __packed;
+
+struct hv_enable_vp_vtl {
+	u64				partition_id;
+	u32				vp_index;
+	union hv_input_vtl		target_vtl;
+	u8				mbz0;
+	u16				mbz1;
+	struct hv_init_vp_context	vp_context;
+} __packed;
+
+struct hv_get_vp_from_apic_id_in {
+	u64 partition_id;
+	union hv_input_vtl target_vtl;
+	u8 res[7];
+	u32 apic_ids[];
+} __packed;
+
 #include <asm-generic/hyperv-tlfs.h>
 
 #endif
diff --git a/include/asm-generic/hyperv-tlfs.h b/include/asm-generic/hyperv-tlfs.h
index b870983596b9..87258341fd7c 100644
--- a/include/asm-generic/hyperv-tlfs.h
+++ b/include/asm-generic/hyperv-tlfs.h
@@ -146,6 +146,7 @@  union hv_reference_tsc_msr {
 /* Declare the various hypercall operations. */
 #define HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE	0x0002
 #define HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST	0x0003
+#define HVCALL_ENABLE_VP_VTL			0x000f
 #define HVCALL_NOTIFY_LONG_SPIN_WAIT		0x0008
 #define HVCALL_SEND_IPI				0x000b
 #define HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE_EX	0x0013
@@ -165,6 +166,8 @@  union hv_reference_tsc_msr {
 #define HVCALL_MAP_DEVICE_INTERRUPT		0x007c
 #define HVCALL_UNMAP_DEVICE_INTERRUPT		0x007d
 #define HVCALL_RETARGET_INTERRUPT		0x007e
+#define HVCALL_START_VP				0x0099
+#define HVCALL_GET_VP_ID_FROM_APIC_ID		0x009a
 #define HVCALL_FLUSH_GUEST_PHYSICAL_ADDRESS_SPACE 0x00af
 #define HVCALL_FLUSH_GUEST_PHYSICAL_ADDRESS_LIST 0x00b0
 #define HVCALL_MODIFY_SPARSE_GPA_PAGE_HOST_VISIBILITY 0x00db
@@ -218,6 +221,7 @@  enum HV_GENERIC_SET_FORMAT {
 #define HV_STATUS_INVALID_PORT_ID		17
 #define HV_STATUS_INVALID_CONNECTION_ID		18
 #define HV_STATUS_INSUFFICIENT_BUFFERS		19
+#define HV_STATUS_VTL_ALREADY_ENABLED		134
 
 /*
  * The Hyper-V TimeRefCount register and the TSC