linux-kernel - [RFC PATCH 03/26] x86/paravirt: PVRTOP macros for PARAVIRT

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Date:   Tue,  7 Apr 2020 22:03:00 -0700
From:   Ankur Arora <ankur.a.arora@...cle.com>
To:     linux-kernel@...r.kernel.org, x86@...nel.org
Cc:     peterz@...radead.org, hpa@...or.com, jpoimboe@...hat.com,
        namit@...are.com, mhiramat@...nel.org, jgross@...e.com,
        bp@...en8.de, vkuznets@...hat.com, pbonzini@...hat.com,
        boris.ostrovsky@...cle.com, mihai.carabas@...cle.com,
        kvm@...r.kernel.org, xen-devel@...ts.xenproject.org,
        virtualization@...ts.linux-foundation.org,
        Ankur Arora <ankur.a.arora@...cle.com>
Subject: [RFC PATCH 03/26] x86/paravirt: PVRTOP macros for PARAVIRT_RUNTIME

Define PVRT* macros which can be used to put pv-ops in
.parainstructions.runtime.

Signed-off-by: Ankur Arora <ankur.a.arora@...cle.com>
---
 arch/x86/include/asm/paravirt_types.h | 49 +++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)

diff --git a/arch/x86/include/asm/paravirt_types.h b/arch/x86/include/asm/paravirt_types.h
index 00e4a062ca10..f1153f53c529 100644
--- a/arch/x86/include/asm/paravirt_types.h
+++ b/arch/x86/include/asm/paravirt_types.h
@@ -337,6 +337,12 @@ struct paravirt_patch_template {
 extern struct pv_info pv_info;
 extern struct paravirt_patch_template pv_ops;
 
+#ifdef CONFIG_PARAVIRT_RUNTIME
+#define PVRT_SUFFIX ".runtime"
+#else
+#define PVRT_SUFFIX ""
+#endif
+
 /* Sub-section for .parainstructions */
 #define PV_SUFFIX ""
 
@@ -693,6 +699,49 @@ int paravirt_disable_iospace(void);
 #define PVOP_VCALL4(op, arg1, arg2, arg3, arg4)				\
 	_PVOP_VCALL4(PV_SUFFIX, op, arg1, arg2, arg3, arg4)
 
+/*
+ * PVRTOP macros for .parainstructions.runtime
+ */
+#define PVRTOP_CALL0(rettype, op)					\
+	_PVOP_CALL0(PVRT_SUFFIX, rettype, op)
+#define PVRTOP_VCALL0(op)						\
+	_PVOP_VCALL0(PVRT_SUFFIX, op)
+
+#define PVRTOP_CALLEE0(rettype, op)					\
+	_PVOP_CALLEE0(PVRT_SUFFIX, rettype, op)
+#define PVRTOP_VCALLEE0(op)						\
+	_PVOP_VCALLEE0(PVRT_SUFFIX, op)
+
+#define PVRTOP_CALL1(rettype, op, arg1)					\
+	_PVOP_CALL1(PVRT_SUFFIX, rettype, op, arg1)
+#define PVRTOP_VCALL1(op, arg1)						\
+	_PVOP_VCALL1(PVRT_SUFFIX, op, arg1)
+
+#define PVRTOP_CALLEE1(rettype, op, arg1)				\
+	_PVOP_CALLEE1(PVRT_SUFFIX, rettype, op, arg1)
+#define PVRTOP_VCALLEE1(op, arg1)					\
+	_PVOP_VCALLEE1(PVRT_SUFFIX, op, arg1)
+
+#define PVRTOP_CALL2(rettype, op, arg1, arg2)				\
+	_PVOP_CALL2(PVRT_SUFFIX, rettype, op, arg1, arg2)
+#define PVRTOP_VCALL2(op, arg1, arg2)					\
+	_PVOP_VCALL2(PVRT_SUFFIX, op, arg1, arg2)
+
+#define PVRTOP_CALLEE2(rettype, op, arg1, arg2)				\
+	_PVOP_CALLEE2(PVRT_SUFFIX, rettype, op, arg1, arg2)
+#define PVRTOP_VCALLEE2(op, arg1, arg2)					\
+	_PVOP_VCALLEE2(PVRT_SUFFIX, op, arg1, arg2)
+
+#define PVRTOP_CALL3(rettype, op, arg1, arg2, arg3)			\
+	_PVOP_CALL3(PVRT_SUFFIX, rettype, op, arg1, arg2, arg3)
+#define PVRTOP_VCALL3(op, arg1, arg2, arg3)				\
+	_PVOP_VCALL3(PVRT_SUFFIX, op, arg1, arg2, arg3)
+
+#define PVRTOP_CALL4(rettype, op, arg1, arg2, arg3, arg4)		\
+	_PVOP_CALL4(PVRT_SUFFIX, rettype, op, arg1, arg2, arg3, arg4)
+#define PVRTOP_VCALL4(op, arg1, arg2, arg3, arg4)			\
+	_PVOP_VCALL4(PVRT_SUFFIX, op, arg1, arg2, arg3, arg4)
+
 /* Lazy mode for batching updates / context switch */
 enum paravirt_lazy_mode {
 	PARAVIRT_LAZY_NONE,
-- 
2.20.1