linux-kernel - [PATCH 4/4] asm-generic/hyperv: Add definitions for Get/SetVpRegister hypercalls

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Date:   Mon, 20 Apr 2020 10:38:38 -0700
From:   Michael Kelley <mikelley@...rosoft.com>
To:     kys@...rosoft.com, haiyangz@...rosoft.com, sthemmin@...rosoft.com,
        wei.liu@...nel.org, tglx@...utronix.de, mingo@...hat.com,
        bp@...en8.de, x86@...nel.org, hpa@...or.com, pbonzini@...hat.com,
        sean.j.christopherson@...el.com, vkuznets@...hat.com,
        wanpengli@...cent.com, jmattson@...gle.com, joro@...tes.org,
        kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-hyperv@...r.kernel.org
Cc:     mikelley@...rosoft.com
Subject: [PATCH 4/4] asm-generic/hyperv: Add definitions for Get/SetVpRegister hypercalls

Add definitions for GetVpRegister and SetVpRegister hypercalls, which
are implemented for both x86 and ARM64.

Signed-off-by: Michael Kelley <mikelley@...rosoft.com>
---
 include/asm-generic/hyperv-tlfs.h | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/include/asm-generic/hyperv-tlfs.h b/include/asm-generic/hyperv-tlfs.h
index 1f92ef92eb56..29b60f5b6323 100644
--- a/include/asm-generic/hyperv-tlfs.h
+++ b/include/asm-generic/hyperv-tlfs.h
@@ -141,6 +141,8 @@ struct ms_hyperv_tsc_page {
 #define HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE_EX	0x0013
 #define HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST_EX	0x0014
 #define HVCALL_SEND_IPI_EX			0x0015
+#define HVCALL_GET_VP_REGISTERS			0x0050
+#define HVCALL_SET_VP_REGISTERS			0x0051
 #define HVCALL_POST_MESSAGE			0x005c
 #define HVCALL_SIGNAL_EVENT			0x005d
 #define HVCALL_RETARGET_INTERRUPT		0x007e
@@ -439,4 +441,30 @@ struct hv_retarget_device_interrupt {
 	struct hv_device_interrupt_target int_target;
 } __packed __aligned(8);
 
+
+/* HvGetVPRegister hypercall */
+struct hv_get_vp_register_input {
+	u64 partitionid;
+	u32 vpindex;
+	u8  inputvtl;
+	u8  padding[3];
+	u32 name0;
+	u32 name1;
+} __packed;
+
+struct hv_get_vp_register_output {
+	union {
+		struct {
+			u32 a;
+			u32 b;
+			u32 c;
+			u32 d;
+		} as32 __packed;
+		struct {
+			u64 low;
+			u64 high;
+		} as64 __packed;
+	};
+};
+
 #endif
-- 
2.18.2