buildroot/package/kvmtool/0002-x86-kvm-cpu.c-don-t-include-asm-msr-index.h.patch

From ce9abb649165aca728e4645ce09e7bb77e684b06 Mon Sep 17 00:00:00 2001
From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Date: Sat, 19 Aug 2017 16:35:59 +0200
Subject: [PATCH] x86/kvm-cpu.c: don't include <asm/msr-index.h>

Since kernel commit 25dc1d6cc3082aab293e5dad47623b550f7ddd2a ("x86:
stop exporting msr-index.h to userland"), <asm/msr-index.h> is no
longer exported to userspace. Therefore, any toolchain built with
kernel headers >= 4.12 will no longer have this header file, causing a
build failure in kvmtool.

As a replacement, this patch includes inside x86/kvm-cpu.c the
necessary MSR_* definitions.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Submitted-upstream: https://patchwork.kernel.org/patch/9910687/
---
 x86/kvm-cpu.c | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/x86/kvm-cpu.c b/x86/kvm-cpu.c
index 5cc4e1e..b02ff65 100644
--- a/x86/kvm-cpu.c
+++ b/x86/kvm-cpu.c
@@ -4,7 +4,6 @@
 #include "kvm/util.h"
 #include "kvm/kvm.h"
 
-#include <asm/msr-index.h>
 #include <asm/apicdef.h>
 #include <linux/err.h>
 #include <sys/ioctl.h>
@@ -136,6 +135,22 @@ static struct kvm_msrs *kvm_msrs__new(size_t nmsrs)
 	return vcpu;
 }
 
+#define MSR_IA32_SYSENTER_CS            0x00000174
+#define MSR_IA32_SYSENTER_ESP           0x00000175
+#define MSR_IA32_SYSENTER_EIP           0x00000176
+
+#define MSR_STAR                0xc0000081 /* legacy mode SYSCALL target */
+#define MSR_LSTAR               0xc0000082 /* long mode SYSCALL target */
+#define MSR_CSTAR               0xc0000083 /* compat mode SYSCALL target */
+#define MSR_SYSCALL_MASK        0xc0000084 /* EFLAGS mask for syscall */
+#define MSR_KERNEL_GS_BASE      0xc0000102 /* SwapGS GS shadow */
+
+#define MSR_IA32_TSC                    0x00000010
+#define MSR_IA32_MISC_ENABLE            0x000001a0
+
+#define MSR_IA32_MISC_ENABLE_FAST_STRING_BIT            0
+#define MSR_IA32_MISC_ENABLE_FAST_STRING                (1ULL << MSR_IA32_MISC_ENABLE_FAST_STRING_BIT)
+
 #define KVM_MSR_ENTRY(_index, _data)	\
 	(struct kvm_msr_entry) { .index = _index, .data = _data }
 
-- 
2.9.4